AD 2017-17-10
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-200 | Airworthiness Directives; ATR-GIE Avions de Transport R gional Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-300 | Airworthiness Directives; ATR-GIE Avions de Transport R gional Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-320 | Airworthiness Directives; ATR-GIE Avions de Transport R gional Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-500 | Airworthiness Directives; ATR-GIE Avions de Transport R gional Airplanes |
Unsafe Condition
Cracked main landing gear (MLG) rear hinge pins, specifically part number D61000 and D62055, due to non-detected thermal abuse during production grinding process, which could lead to MLG structural failure and consequent collapse, possibly resulting in damage to the airplane and injury to occupants.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Identify the serial number and part number of the MLG rear hinge pins. Replace pins or the MLG if necessary. Replace certain additional MLG hinge pins as specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 12 months of the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All ATR-GIE Avions de Transport Régional Model ATR42 and ATR72 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
We are superseding Airworthiness Directive (AD) 2015-23-12, which applied to all ATR-GIE Avions de Transport R[eacute]gional Model ATR42 and ATR72 airplanes. AD 2015-23-12 required identifying the serial number and part number of the main landing gear (MLG) rear hinge pins, and replacing pins or the MLG if necessary. This AD retains the requirements of AD 2015-23-12, requires replacing certain additional MLG hinge pins, and reduces certain compliance times. This AD was prompted by a new occurrence of a cracked MLG rear hinge pin. We are issuing this AD to address the unsafe condition on these products.
Applicability Source Text
Show captured applicability text from the source AD
(c) Applicability
This AD applies to ATR-GIE Avions de Transport R[eacute]gional
Model ATR42-200, -300, -320, and -500 airplanes; and ATR72-101, -
201, -102, -202, -211, -212, and -212A airplanes; certificated in
any category; all certified models; all manufacturer serial numbers.
Document Text
Show stored source text (verify against official source)
[Federal Register Volume 82, Number 164 (Friday, August 25, 2017)]
[Rules and Regulations]
[Pages 40479-40484]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2017-17398]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2017-0516; Product Identifier 2016-NM-125-AD; Amendment
39-19000; AD 2017-17-10]
RIN 2120-AA64
Airworthiness Directives; ATR-GIE Avions de Transport
R[eacute]gional Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are superseding Airworthiness Directive (AD) 2015-23-12,
which applied to all ATR-GIE Avions de Transport R[eacute]gional Model
ATR42 and ATR72 airplanes. AD 2015-23-12 required identifying the
serial number and part number of the main landing gear (MLG) rear hinge
pins, and replacing pins or the MLG if necessary. This AD retains the
requirements of AD 2015-23-12, requires replacing certain additional
MLG hinge pins, and reduces certain compliance times. This AD was
prompted by a new occurrence of a cracked MLG rear hinge pin. We are
issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective September 29, 2017.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of September 29,
2017.
[[Page 40480]]
The Director of the Federal Register approved the incorporation by
reference of certain other publications listed in this AD as of
December 29, 2015 (80 FR 73096, November 24, 2015).
ADDRESSES: For service information identified in this final rule,
contact ATR-GIE Avions de Transport R[eacute]gional, 1, All[eacute]e
Pierre Nadot, 31712 Blagnac Cedex, France; telephone +33 (0) 5 62 21 62
21; fax +33 (0) 5 62 21 67 18; email <a href="/cdn-cgi/l/email-protection#71121e1f05181f0414155f101803061e030519181f140202311005035f1703"><span class="__cf_email__" data-cfemail="a0c3cfced4c9ced5c5c48ec1c9d2d7cfd2d4c8c9cec5d3d3e0c1d4d28ec6d2">[email protected]</span></a>;
Internet <a href="http://www.aerochain.com">http://www.aerochain.com</a>. You may view this referenced service
information at the FAA, Transport Standards Branch, 1601 Lind Avenue
SW., Renton, WA. For information on the availability of this material
at the FAA, call 425-227-1221. It is also available on the Internet at
<a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating Docket No.
FAA-2017-0516.
Examining the AD Docket
You may examine the AD docket on the Internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating Docket No. FAA-2017-
0516; or in person at the Docket Management Facility between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays. The AD docket
contains this AD, the regulatory evaluation, any comments received, and
other information. The address for the Docket Office (telephone 800-
647-5527) is Docket Management Facility, U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Shahram Daneshmandi, Aerospace
Engineer, International Section, Transport Standards Branch, FAA, 1601
Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1112; fax
425-227-1149.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2015-23-12, Amendment 39-18329 (80 FR 73096,
November 24, 2015) (``AD 2015-23-12''). AD 2015-23-12 applied to all
ATR-GIE Avions de Transport R[eacute]gional Model ATR42 and ATR72
airplanes. The NPRM published in the Federal Register on May 31, 2017
(82 FR 24906). The NPRM was prompted by a new occurrence of a cracked
MLG rear hinge pin. The NPRM proposed to continue to require
identifying the serial number and part number of the MLG rear hinge
pins, and replacing pins or the MLG if necessary. The NPRM also
proposed to require replacing certain additional MLG hinge pins, and
reducing certain compliance times. We are issuing this AD to detect and
correct cracked rear hinge pins, which could lead to MLG structural
failure, possibly resulting in collapse of the MLG and consequent
injury to the occupants of the airplane.
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Union, has issued EASA
Airworthiness Directive 2016-0135, dated July 8, 2016 (referred to
after this as the Mandatory Continuing Airworthiness Information, or
``the MCAI''), to correct an unsafe condition for all ATR-GIE Avions de
Transport R[eacute]gional Model ATR42 and ATR72 airplanes. The MCAI
states:
Prompted by cases of rupture of main landing gear (MLG) rear
hinge pin part number (P/N) D61000 encountered in service in 1994
and 1996, DGAC [Direction G[eacute]n[eacute]rale de l'Aviation
Civile] France issued AD 96-131-064 (B) for ATR42 aeroplanes and AD
96-096-029 (B) for ATR72 aeroplanes to require inspection and,
depending on findings, corrective action. Since those [French] ADs
were issued, new occurrences of cracked rear hinge pin P/N [part
number] D61000 were reported on ATR72 MLG. The result of subsequent
investigation revealed that the affected pins were subjected to a
non-detected thermal abuse done in production during grinding
process. Analysis also showed that other MLG pin P/N's could be
affected by the same production issue.
This condition, if not detected and corrected, could lead to
structural failure and consequent collapse of the MLG, possibly
resulting in damage to the aeroplane and injury to the occupants.
To address this potential unsafe condition, EASA issued AD 2014-
0074 [which corresponds to FAA AD 2015-23-12] to require inspection
and, depending on findings, replacement of affected pins.
After EASA AD 2014-0074 was issued, a new occurrence was
reported of a cracked MLG hinge pin P/N D62055 installed on the MLG
Side Brace of an ATR42 aeroplane. This new occurrence was also
identified as related to a non-detected thermal abuse done in
production during grinding process.
Prompted by this new occurrence, Messier Bugatti Dowty (MBD)
updated the list of MLG hinge pins affected by this unsafe condition
by adding serial numbers (S/N), which were previously not considered
by EASA AD 2014-0074. In addition, it was determined that the
compliance time for replacement of pins with P/N D62055 must be
reduced. The six affected MBD Service Bulletins (SB) were revised
accordingly, and six new ones were also published to address this
issue.
For the reasons described above, this [EASA] AD retains the
requirements of EASA AD 2014-0074, which is superseded, but
addresses an expanded MLG hinge pin population with appropriate
compliance time(s).
You may examine the MCAI in the AD docket on the Internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating Docket No. FAA-2017-
0516.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM or on the determination of
the cost to the public.
Conclusion
We reviewed the available data and determined that air safety and
the public interest require adopting this AD as proposed except for
minor editorial changes. We have determined that these minor changes:
<bullet> Are consistent with the intent that was proposed in the
NPRM for correcting the unsafe condition; and
<bullet> Do not add any additional burden upon the public than was
already proposed in the NPRM.
Related Service Information Under 1 CFR Part 51
Messier-Bugatti-Dowty has issued the following service information,
which describes procedures for inspecting and replacing the MLG hinge
pin. These documents are distinct since they apply to different
airplane models and different MLG hinge pin part numbers.
<bullet> Service Bulletin 631-32-213, Revision 2, dated March 15,
2016.
<bullet> Service Bulletin 631-32-214, Revision 1, dated March 15,
2016.
<bullet> Service Bulletin 631-32-215, Revision 1, dated March 15,
2016.
<bullet> Service Bulletin 631-32-216, Revision 3, dated March 15,
2016.
<bullet> Service Bulletin 631-32-219, Revision 1, dated March 15,
2016.
<bullet> Service Bulletin 631-32-220, Revision 1, dated March 15,
2016.
<bullet> Service Bulletin 631-32-224, dated March 15, 2016.
<bullet> Service Bulletin 631-32-231, dated March 15, 2016.
<bullet> Service Bulletin 631-32-232, Revision 1, dated March 15,
2016.
<bullet> Service Bulletin 631-32-233, dated March 15, 2016.
<bullet> Service Bulletin 631-32-234, dated March 15, 2016.
<bullet> Service Bulletin 631-32-235, dated March 15, 2016.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.
Costs of Compliance
We estimate that this AD will affect 63 airplanes of U.S. registry.
[[Page 40481]]
The actions required by AD 2015-23-12, and retained in this AD take
about 8 work-hours per product, at an average labor rate of $85 per
work-hour. Required parts will cost about $16,000 per product. Based on
these figures, the estimated cost of the actions that are required by
AD 2015-23-12 is $16,680 per product.
We also estimate that it will take about 8 work-hours per product
to comply with the basic requirements of this AD. The average labor
rate is $85 per work-hour. Required parts will cost about $16,000 per
product. Based on these figures, we estimate the cost of this AD on
U.S. operators to be $1,050,840, or $16,680 per product.
According to the manufacturer, some of the costs of this AD may be
covered under warranty, thereby reducing the cost impact on affected
individuals. We do not control warranty coverage for affected
individuals. As a result, we have included all costs in our cost
estimate.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. ``Subtitle VII: Aviation
Programs,'' describes in more detail the scope of the Agency's
authority.
We are issuing this rulemaking under the authority described in
``Subtitle VII, Part A, Subpart III, Section 44701: General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to transport category airplanes to
the Director of the System Oversight Division.
Regulatory Findings
We determined that this AD will not have federalism implications
under Executive Order 13132. This AD will not have a substantial direct
effect on the States, on the relationship between the national
government and the States, or on the distribution of power and
responsibilities among the various levels of government.
For the reasons discussed above, I certify that this AD:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979);
3. Will not affect intrastate aviation in Alaska; and
4. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD)
2015-23-12, Amendment 39-18329 (80 FR 73096, November 24, 2015), and
adding the following new AD:
2017-17-10 ATR-GIE Avions de Transport R[eacute]gional: Amendment
39-19000; Docket No. FAA-2017-0516; Product Identifier 2016-NM-125-
AD.
(a) Effective Date
This AD is effective September 29, 2017.
(b) Affected ADs
This AD replaces AD 2015-23-12, Amendment 39-18329 (80 FR 73096,
November 24, 2015) (``AD 2015-23-12'').
(c) Applicability
This AD applies to ATR-GIE Avions de Transport R[eacute]gional
Model ATR42-200, -300, -320, and -500 airplanes; and ATR72-101, -
201, -102, -202, -211, -212, and -212A airplanes; certificated in
any category; all certified models; all manufacturer serial numbers.
(d) Subject
Air Transport Association (ATA) of America Code 32, Landing
Gear.
(e) Reason
This AD was prompted by a new occurrence of a cracked main
landing gear (MLG) rear hinge pin. We are issuing this AD to detect
and correct cracked rear hinge pins, which could lead to MLG
structural failure, possibly resulting in collapse of the MLG and
consequent injury to the occupants of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Retained Hinge Pin Identification and Replacement for Model ATR72
Airplanes, With Terminating Action
This paragraph restates the requirements of paragraph (g) of AD
2015-23-12, with terminating action. For Model ATR72 airplanes:
Within 12 months after December 29, 2015 (the effective date of AD
2015-23-12), inspect for the serial number of the left-hand (LH) and
right-hand (RH) MLG rear hinge pins having part number (P/N) D61000.
A review of airplane maintenance records is acceptable in lieu of
this identification if the part number and serial number of the LH
and RH MLG rear hinge pins can be conclusively determined from that
review. If a rear hinge pin having P/N D61000 has a serial number
listed in Messier-Bugatti-Dowty Service Bulletin 631-32-213, dated
December 16, 2013; or Messier-Bugatti-Dowty Service Bulletin 631-32-
216, Revision 1, dated December 17, 2013; as applicable: Within 12
months after December 29, 2015, replace the pin with a serviceable
part as identified in paragraph (h) of this AD, in accordance with
the Accomplishment Instructions of Messier-Bugatti-Dowty Service
Bulletin 631-32-213, dated December 16, 2013; or Messier-Bugatti-
Dowty Service Bulletin 631-32-216, Revision 1, dated December 17,
2013; as applicable. Accomplishment of the actions required by
paragraph (l) of this AD terminates the inspection required by this
paragraph. Accomplishing the actions required by paragraph (m) or
(o) of this AD terminates the actions required by this paragraph.
(h) Retained Definition of Serviceable Hinge Pin for Model ATR72
Airplanes for Paragraph (g) of This AD, With No Changes
This paragraph restates the definition in paragraph (h) of AD
2015-23-12, with no changes. For Model ATR72 airplanes: For purposes
of paragraph (g) of this AD, a serviceable MLG rear hinge pin is a
pin that is specified in paragraph (h)(1) or (h)(2) of this AD.
(1) A hinge pin that is not identified in Messier-Bugatti-Dowty
Service Bulletin 631-32-213, dated December 16, 2013; or Messier-
Bugatti-Dowty Service Bulletin 631-32-216, Revision 1, dated
December 17, 2013; as applicable.
(2) A hinge pin that has been inspected and reconditioned, in
accordance with the Accomplishment Instructions of Messier-Bugatti-
Dowty Service Bulletin 631-32-213, dated December 16, 2013; or
Messier-Bugatti-Dowty Service Bulletin 631-32-216, Revision 1, dated
December 17, 2013; as applicable.
[[Page 40482]]
(i) Retained MLG Pin Identification and Replacement for Model ATR72
Airplanes, With Terminating Action
This paragraph restates the requirements of paragraph (i) of AD
2015-23-12, with terminating action. For Model ATR72 airplanes: At
the earlier of the times specified in paragraphs (i)(1) and (i)(2)
of this AD, inspect all LH and RH MLG pins for a part number and
serial number listed in Messier-Bugatti-Dowty Service Bulletin 631-
32-214, dated January 13, 2014; or Messier-Bugatti-Dowty Service
Bulletin 631-32-219, dated March 3, 2014; as applicable. A review of
airplane maintenance records is acceptable in lieu of this
inspection if the part number and serial number of the LH and RH MLG
pin can be conclusively determined from that review. If any affected
MLG pin is found: At the earlier of the compliance times specified
in paragraphs (i)(1) and (i)(2) of this AD, replace the MLG with a
serviceable MLG as identified in paragraph (j) of this AD, using a
method approved by the Manager, International Section, Transport
Standards Branch, FAA; or the European Aviation Safety Agency
(EASA); or ATR-GIE Avions de Transport R[eacute]gional's EASA Design
Organization Approval (DOA). Accomplishment of the actions required
by paragraph (l) of this AD terminates the inspection for the part
number and serial number of the LH and RH MLG rear hinge pins
required by this paragraph. Accomplishment of the actions required
by paragraph (m) or (o) of this AD terminates the actions required
by this paragraph.
(1) No later than the next MLG overhaul scheduled after December
29, 2015 (the effective date of AD 2015-23-12).
(2) Within 20,000 flight cycles or 9 years, whichever occurs
first, accumulated since installation of the MLG on an airplane
since new or since last overhaul, as applicable.
(j) Retained Definition of Serviceable MLG for Model ATR72 Airplanes
for Paragraph (i) of This AD, With No Changes
This paragraph restates the definition in paragraph (j) of AD
2015-23-12, with no changes. For Model ATR72 airplanes: For purposes
of paragraph (i) of this AD, a serviceable MLG is one that
incorporates pins specified in paragraph (j)(1) or (j)(2) of this
AD.
(1) Pins that are not identified in Messier-Bugatti-Dowty
Service Bulletin 631-32-214, dated January 13, 2014; or Messier-
Bugatti-Dowty Service Bulletin 631-32-219, dated March 3, 2014; as
applicable.
(2) Pins that have been inspected and reconditioned in
accordance with the Accomplishment Instructions of Messier-Bugatti-
Dowty Service Bulletin 631-32-214, dated January 13, 2014; or
Messier-Bugatti-Dowty Service Bulletin 631-32-219, dated March 3,
2014; as applicable.
(k) Retained MLG Pin Identification and Replacement for Model ATR42
Airplanes, With Terminating Action
This paragraph restates the requirements of paragraph (k) of AD
2015-23-12, with terminating action. Accomplishment of the actions
required by paragraph (l) of this AD terminates the actions required
by paragraph (k)(1) of this AD. Accomplishment of the actions
required by paragraph (m) or (o) of this AD terminates the actions
required by paragraph (k)(2) of this AD.
(1) For Model ATR42 airplanes: Within the compliance time
identified in paragraph (k)(1)(i) or (k)(1)(ii) of this AD,
whichever occurs first, inspect for any LH and RH MLG pins having a
part number and serial number listed in Messier-Bugatti-Dowty
Service Bulletin 631-32-215, dated January 13, 2014; or Messier-
Bugatti-Dowty Service Bulletin 631-32-220, dated March 3, 2014; as
applicable. A review of airplane maintenance records is acceptable
in lieu of this identification if the part number and serial number
of the LH and RH MLG pin can be conclusively determined from that
review.
(i) No later than the next MLG overhaul scheduled after December
29, 2015 (the effective date of AD 2015-23-12).
(ii) Within 20,000 flight cycles or 9 years, whichever occurs
first, accumulated since installation of the MLG on an airplane
since new or since last overhaul, as applicable.
(2) If the MLG pin having a part number and serial number listed
in Messier-Bugatti-Dowty Service Bulletin 631-32-215, dated January
13, 2014; or Messier-Bugatti-Dowty Service Bulletin 631-32-220,
dated March 3, 2014; as applicable; is found to be installed during
the identification required by paragraph (k)(1) of this AD, within
the compliance time identified in paragraph (k)(1) of this AD,
replace the MLG with a serviceable MLG, using a method approved by
the Manager, International Section, Transport Standards Branch, FAA;
or the EASA; or ATR-GIE Avions de Transport R[eacute]gional's EASA
DOA. For the purposes of this paragraph, a serviceable MLG is a part
that has pins identified in paragraph (k)(2)(i) or (k)(2)(ii) of
this AD.
(i) Pins that are not listed in Messier-Bugatti-Dowty Service
Bulletin 631-32-215, dated January 13, 2014; or Messier-Bugatti-
Dowty Service Bulletin 631-32-220, dated March 3, 2014; as
applicable.
(ii) Pins that have been inspected and reconditioned, in
accordance with the Accomplishment Instructions of Messier-Bugatti-
Dowty Service Bulletin 631-32-215, dated January 13, 2014; or
Messier-Bugatti-Dowty Service Bulletin 631-32-220, dated March 3,
2014; as applicable.
(l) New Requirement of This AD: Hinge Pin Identification
Within the applicable compliance time specified in, and in
accordance with the Accomplishment Instructions of, the applicable
Messier-Bugatti-Dowty Service Bulletin specified in figure 1 to
paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l)
through (p) of this AD, as applicable to the airplane model and MLG
hinge part number, identify the serial number (S/N) of the LH and RH
MLG hinge pins. A review of airplane maintenance records is
acceptable in lieu of this identification if the part number and
serial number of the LH and RH MLG hinge pins can be conclusively
determined from that review. Accomplishment of the actions required
by this paragraph terminates the inspections required by paragraphs
(g), (i), and (k)(1) of this AD.
Figure 1 to Paragraphs (l) Through (p) of This AD--Model ATR72 Airplanes
------------------------------------------------------------------------
Applicable Messier-
MLG hinge part Nos. Bugatti-Dowty Compliance time
service bulletins
------------------------------------------------------------------------
D60955, D60968, D60999, Messier-Bugatti- A or B, whichever
D61032, D61061. Dowty Service occurs first:
Bulletin A: Not later than
631[dash]32-214, the next scheduled
Revision 1, dated MLG overhaul after
March 15, 2016, the effective date
Messier-Bugatti- of this AD.
Dowty Service B: Within 20,000
Bulletin flight cycles or 9
631[dash]32-219, years, whichever
Revision 1, dated occurs first,
March 15, 2016, or. accumulated since
Messier-Bugatti- first installation
Dowty Service of a MLG on an
Bulletin airplane since new,
631[dash]32-233, or since last
dated March 15, overhaul, as
2016.. applicable.
D61000...................... Messier-Bugatti- Within 12 months
Dowty Service after the effective
Bulletin date of this AD.
631[dash]32-213,
Revision 2, dated
March 15, 2016,
Messier-Bugatti-
Dowty Service
Bulletin
631[dash]32-216,
Revision 3, dated
March 15, 2016, or
Messier-Bugatti-
Dowty Service
Bulletin
631[dash]32-232,
Revision 1, dated
March 15, 2016.
------------------------------------------------------------------------
[[Page 40483]]
Figure 2 to Paragraphs (l) Through (p) of This AD--Model ATR42 Airplanes
----------------------------------------------------------------------------------------------------------------
Applicable Messier-Bugatti-
MLG hinge part Nos. Airplane model(s) Dowty service bulletins Compliance time
----------------------------------------------------------------------------------------------------------------
D62054, D63823, D63825............ All.................. Messier-Bugatti-Dowty A or B, whichever occurs
Service Bulletin first:
631[dash]32[dash]215, A: Not later than the
Revision 1, dated March next scheduled MLG
15, 2016, overhaul after the
effective date of this
AD.
Messier-Bugatti-Dowty B: Within 20,000 flight
Service Bulletin cycles or 9 years,
631[dash]32[dash]220, whichever occurs first,
Revision 1, dated March accumulated since first
15, 2016, or installation of a MLG on
Messier-Bugatti-Dowty an airplane since new,
Service Bulletin or since last overhaul,
631[dash]32[dash]235, as applicable.
dated March 15, 2016..
D56800, D56800-1, D56809, D56841, ATR42-300............ Messier-Bugatti-Dowty A or B, whichever occurs
D57261, D57401, D57407, D58807, Service Bulletin first:
D62079. 631[dash]32[dash]215, A: Not later than the
Revision 1, dated March next scheduled MLG
15, 2016, overhaul after the
Messier-Bugatti-Dowty effective date of this
Service Bulletin AD.
631[dash]32[dash]220, B: Within 20,000 flight
Revision 1, dated March cycles or 9 years,
15, 2016, or. whichever occurs first,
Messier-Bugatti-Dowty accumulated since first
Service Bulletin installation of a MLG on
631[dash]32[dash]235, an airplane since new,
dated March 15, 2016.. or since last overhaul,
as applicable.
D62055............................ All.................. Messier-Bugatti-Dowty Within 24 months after
Service Bulletin the effective date of
631[dash]32[dash]224, this AD.
dated March 15, 2016,
Messier-Bugatti-Dowty
Service Bulletin
631[dash]32[dash]231,
dated March 15, 2016, or
Messier-Bugatti-Dowty
Service Bulletin 631-32-
234, dated March 15,
2016.
----------------------------------------------------------------------------------------------------------------
(m) New MLG Hinge Pin Replacement
If, during the identification required by paragraph (l) of this
AD, an MLG hinge pin with a serial number listed in the applicable
Messier-Bugatti-Dowty Service Bulletin is found to be installed:
Within the compliance time specified in figure 1 to paragraphs (l)
through (p) of this AD, or figure 2 to paragraphs (l) through (p) of
this AD, as applicable to airplane model and MLG hinge pin part
number, replace each affected MLG hinge pin with a serviceable MLG
hinge pin. The replacement must be done in accordance with the
Accomplishment Instructions of the applicable Messier-Bugatti-Dowty
Service Bulletin specified in figure 1 to paragraphs (l) through (p)
of this AD, or figure 2 to paragraphs (l) through (p) of this AD, as
applicable to the airplane model and MLG hinge part number, except
as required by paragraph (o) of this AD. Accomplishment of the
actions required by this paragraph terminates the actions required
by paragraphs (g) and (i) of this AD. Accomplishment of the actions
required by this paragraph terminates the replacement required by
paragraph (k)(2) of this AD.
(n) New Definition of Serviceable Hinge Pins for Paragraph (m) of This
AD
For the purpose of paragraph (m) of this AD, a serviceable MLG
hinge pin is a pin that is specified in paragraph (n)(1) or (n)(2)
of this AD.
(1) A hinge pin that does not belong to the identified batch as
listed in the applicable Messier-Bugatti-Dowty Service Bulletin
specified in figure 1 to paragraphs (l) through (p) of this AD, or
figure 2 to paragraphs (l) through (p) of this AD, as applicable to
the airplane model and MLG hinge part number.
(2) A hinge pin that can be identified, through the MLG
maintenance records, as having been inspected and reconditioned in
accordance with the Accomplishment Instructions of the applicable
Messier-Bugatti-Dowty Service Bulletin specified in figure 1 to
paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l)
through (p) of this AD, as applicable to the airplane model and MLG
hinge part number.
(o) New MLG Hinge Pin Replacement Procedures
If, during accomplishment of the MLG hinge pin replacement
required by paragraph (m) of this AD, the applicable Messier-
Bugatti-Dowty Service Bulletin specified in figure 1 to paragraphs
(l) through (p) of this AD, or figure 2 to paragraphs (l) through
(p) of this AD, does not specify the MLG hinge pin replacement
procedure, do the MLG hinge pin replacement using a method approved
by the Manager, International Section, Transport Standards Branch,
FAA; or the EASA; or ATR--GIE Avions de Transport R[eacute]gional's
EASA DOA. Do the MLG hinge pin replacement at the applicable
compliance time specified in paragraph (m) of this AD.
Accomplishment of the actions required by this paragraph terminates
the hinge pin replacement required by paragraphs (g), (i), and
(k)(2) of this AD.
(p) New Parts Installation Limitation
As of the effective date of this AD, no person may install on
any airplane an MLG hinge pin having a part number identified in
figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to
paragraphs (l) through (p) of this AD, and having a serial number
defined in the applicable Messier-Bugatti-Dowty Service Bulletin
specified in figure 1 to paragraphs (l) through (p) of this AD, or
figure 2 to paragraphs (l) through (p) of this AD, as applicable to
the airplane model and MLG hinge part number, unless the part can be
conclusively identified, through the MLG maintenance records, as
having been inspected and reconditioned in accordance with the
Accomplishment Instructions of the applicable Messier-Bugatti-Dowty
Service Bulletin.
(q) Credit for Previous Actions
(1) This paragraph restates the credit provided in paragraph (l)
of AD 2015-23-12, with no changes. This paragraph provides credit
for the actions required by paragraph (g) of this AD, if those
actions were performed before December 29, 2015 (the effective date
of AD 2105-23-12), using Messier-Bugatti-Dowty Service Bulletin 631-
32-216, dated October 30, 2013, which is not incorporated by
reference in this AD.
(2) This paragraph provides credit for the actions required by
paragraphs (l) and (m) of this AD, if those actions were done before
the effective date of this AD using the applicable service
information specified in paragraph (q)(2)(i) through (q)(2)(x) of
this AD.
(i) Messier-Bugatti-Dowty Service Bulletin 631-32-213, December
16, 2013, which was incorporated by reference on December 29, 2015
(80 FR 73096, November 24, 2015).
(ii) Messier-Bugatti-Dowty Service Bulletin 631-32-213, Revision
1, dated December 8, 2014, which is not incorporated by reference in
this AD.
(iii) Messier-Bugatti-Dowty Service Bulletin 631-32-214, dated
January 13, 2014, which was incorporated by reference on December
29, 2015 (80 FR 73096, November 24, 2015).
(iv) Messier-Bugatti-Dowty Service Bulletin 631-32-215, dated
January 13, 2014, which was incorporated by reference on December
29, 2015 (80 FR 73096, November 24, 2015).
(v) Messier-Bugatti-Dowty Service Bulletin 631-32-216, dated
October 30, 2013, which is not incorporated by reference in this AD.
(vi) Messier-Bugatti-Dowty Service Bulletin 631-32-216, Revision
1, dated December 17, 201, which was incorporated by reference on
December 29, 2015 (80 FR 73096, November 24, 2015).
(vii) Messier-Bugatti-Dowty Service Bulletin 631-32-216,
Revision 2, dated December 8, 2014, which is not incorporated by
reference in this AD.
[[Page 40484]]
(viii) Messier-Bugatti-Dowty Service Bulletin 631-32-219, dated
March 3, 2014, which was incorporated by reference on December 29,
2015 (80 FR 73096, November 24, 2015).
(ix) Messier-Bugatti-Dowty Service Bulletin 631-32-220, dated
March 3, 2014, which was incorporated by reference on December 29,
2015 (80 FR 73096, November 24, 2015).
(x) Messier-Bugatti-Dowty Service Bulletin 631-32-232, dated
December 8, 2014, which is not incorporated by reference in this AD.
(r) Other FAA AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
International Section, Transport Standards Branch, FAA, has the
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or local Flight
Standards District Office, as appropriate. If sending information
directly to the manager of the International Branch, send it to the
attention of the person identified in paragraph (s)(2) of this AD.
Information may be emailed to: <a href="/cdn-cgi/l/email-protection#4a73670b0407677b7b7c670b07050967180f1b1f0f191e190a2c2b2b642d253c"><span class="__cf_email__" data-cfemail="3a03177b7477170b0b0c177b77757917687f6b6f7f696e697a5c5b5b145d554c">[email protected]</span></a>.
(i) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
(ii) AMOCs approved previously for AD 2015-23-12 are approved as
AMOCs for the corresponding provisions of this AD.
(2) Contacting the Manufacturer: As of the effective date of
this AD, for any requirement in this AD to obtain corrective actions
from a manufacturer, the action must be accomplished using a method
approved by the Manager, International Section, Transport Standards
Branch, FAA; or the EASA; or ATR--GIE Avions de Transport
R[eacute]gional's EASA DOA. If approved by the DOA, the approval
must include the DOA-authorized signature.
(s) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) EASA Airworthiness Directive 2016-0135, dated July 8, 2016,
for related information. This MCAI may be found in the AD docket on
the Internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and
locating Docket No. FAA-2017-0516.
(2) For more information about this AD, contact Shahram
Daneshmandi, Aerospace Engineer, International Section, Transport
Standards Branch, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356;
telephone 425-227-1112; fax 425-227-1149.
(3) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (t)(5) and (t)(6) of this AD.
(t) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(3) The following service information was approved for IBR on
September 29, 2017.
(i) Messier-Bugatti-Dowty Service Bulletin 631-32-213, Revision
2, dated March 15, 2016.
(ii) Messier-Bugatti-Dowty Service Bulletin 631-32-214, Revision
1, dated March 15, 2016.
(iii) Messier-Bugatti-Dowty Service Bulletin 631-32-215,
Revision 1, dated March 15, 2016.
(iv) Messier-Bugatti-Dowty Service Bulletin 631-32-216, Revision
3, dated March 15, 2016.
(v) Messier-Bugatti-Dowty Service Bulletin 631-32-219, Revision
1, dated March 15, 2016.
(vi) Messier-Bugatti-Dowty Service Bulletin 631-32-220, Revision
1, dated March 15, 2016.
(vii) Messier-Bugatti-Dowty Service Bulletin 631-32-224, dated
March 15, 2016.
(viii) Messier-Bugatti-Dowty Service Bulletin 631-32-231, dated
March 15, 2016.
(ix) Messier-Bugatti-Dowty Service Bulletin 631-32-232, Revision
1, dated March 15, 2016.
(x) Messier-Bugatti-Dowty Service Bulletin 631-32-233, dated
March 15, 2016.
(xi) Messier-Bugatti-Dowty Service Bulletin 631-32-234, dated
March 15, 2016.
(xii) Messier-Bugatti-Dowty Service Bulletin 631-32-235, dated
March 15, 2016.
(4) The following service information was approved for IBR on
December 29, 2015 (80 FR 73096, November 24, 2015).
(i) Messier-Bugatti-Dowty Service Bulletin 631-32-213, dated
December 16, 2013.
(ii) Messier-Bugatti-Dowty Service Bulletin 631-32-214, dated
January 13, 2014.
(iii) Messier-Bugatti-Dowty Service Bulletin 631-32-215, dated
January 13, 2014.
(iv) Messier-Bugatti-Dowty Service Bulletin 631-32-216, Revision
1, dated December 17, 2013. Pages 4, 5, and 8 of this service
bulletin are the original issue and are dated October 30, 2013.
(v) Messier-Bugatti-Dowty Service Bulletin 631-32-219, dated
March 3, 2014.
(vi) Messier-Bugatti-Dowty Service Bulletin 631-32-220, dated
March 3, 2014.
(5) For service information identified in this AD, contact ATR-
GIE Avions de Transport R[eacute]gional, 1, All[eacute]e Pierre
Nadot, 31712 Blagnac Cedex, France; telephone +33 (0) 5 62 21 62 21;
fax +33 (0) 5 62 21 67 18; email <a href="/cdn-cgi/l/email-protection#72111d1c061b1c0717165c131b00051d00061a1b1c170101321306005c1400"><span class="__cf_email__" data-cfemail="56353938223f3823333278373f24213924223e3f3833252516372224783024">[email protected]</span></a>;
Internet <a href="http://www.aerochain.com">http://www.aerochain.com</a>.
(6) You may view this service information at the FAA, Transport
Standards Branch, 1601 Lind Avenue SW., Renton, WA. For information
on the availability of this material at the FAA, call 425-227-1221.
(7) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, call 202-741-6030, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">http://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued in Renton, Washington, on August 8, 2017.
Dionne Palermo,
Acting Director, System Oversight Division, Aircraft Certification
Service.
[FR Doc. 2017-17398 Filed 8-24-17; 8:45 am]
BILLING CODE 4910-13-P
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Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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