AD 2016-20-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aeronautics | SAAB 2000 | Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes |
Unsafe Condition
Blind fasteners installed in EMS upper fittings (frame NS204.7 and upper longerons) do not meet the type design, which specifies Hi-Lok fasteners and two solid rivets (monel). This could cause crack development and vibration in the engine mount structure, leading to failure of the engine-mount-to-airplane structural connection and detachment of an engine from the airplane when both sides of a nacelle are affected.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the type of fasteners installed on the upper longerons and upper fittings of the engine mounting structure (EMS). Inspect for discrepancies of certain fasteners, including gaps between the fastener head and structure, traces of movement, and deformation of the structure. Take corrective action if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Saab AB, Saab Aeronautics Model SAAB 2000 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
We are adopting a new airworthiness directive (AD) for all Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. This AD requires an inspection to identify the type of fasteners installed on the upper longerons and upper fittings of the engine mounting structure (EMS), an inspection for discrepancies of certain fasteners, and corrective action if necessary. This AD was prompted by the discovery of blind fasteners installed in EMS upper fittings that do not meet the type design. We are issuing this AD to detect and correct discrepancies of blind fasteners that could cause crack development and vibration in the engine mount structure, which could lead to failure of the affected engine-mount-to-airplane structural connection and resultant detachment of an engine from the airplane when both sides of a nacelle are affected.
Applicability Source Text
Show captured applicability text from the source AD
(c) Applicability
This AD applies to all Saab AB, Saab Aeronautics (formerly known
as Saab AB, Saab Aerosystems) Model SAAB 2000 airplanes,
certificated in any category.
Document Text
Show stored source text (verify against official source)
[Federal Register Volume 81, Number 188 (Wednesday, September 28, 2016)]
[Rules and Regulations]
[Pages 66513-66516]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2016-23081]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2016-9114; Directorate Identifier 2016-NM-146-AD;
Amendment 39-18671; AD 2016-20-05]
RIN 2120-AA64
Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly
Known as Saab AB, Saab Aerosystems) Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
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SUMMARY: We are adopting a new airworthiness directive (AD) for all
Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. This AD requires
an inspection to identify the type of fasteners installed on the upper
longerons and upper fittings of the engine mounting structure (EMS), an
inspection for discrepancies of certain fasteners, and corrective
action if necessary. This AD was prompted by the discovery of blind
fasteners installed in EMS upper fittings that do not meet the type
design. We are issuing this AD to detect and correct discrepancies of
blind fasteners that could cause crack development and vibration in the
engine mount structure, which could lead to failure of the affected
engine-mount-to-airplane structural connection and resultant detachment
of an engine from the airplane when both sides of a nacelle are
affected.
DATES: This AD becomes effective October 13, 2016.
The Director of the Federal Register approved the incorporation by
reference of a certain publications listed in this AD as of October 13,
2016.
We must receive comments on this AD by November 14, 2016.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
[[Page 66514]]
<bullet> Federal eRulemaking Portal: Go to <a href="http://www.regulations.gov">http://www.regulations.gov</a>. Follow the instructions for submitting comments.
<bullet> Fax: 202-493-2251.
<bullet> Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC 20590.
<bullet> Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
For service information identified in this final rule, contact Saab
AB, Saab Aeronautics, SE-581 88, Link[ouml]ping, Sweden; telephone +46
13 18 5591; fax +46 13 18 4874; email
<a href="/cdn-cgi/l/email-protection#4c3f2d2d2e7e7c7c7c6238292f243f393c3c233e380c3f2d2d2e2b3e23393c622f2321"><span class="__cf_email__" data-cfemail="ddaebcbcbfefedededf3a9b8beb5aea8adadb2afa99daebcbcbfbaafb2a8adf3beb2b0">[email protected]</span></a>; Internet <a href="http://www.saabgroup.com">http://www.saabgroup.com</a>.
You may view this referenced service information at the FAA, Transport
Airplane Directorate, 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-2016-9114.
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-2016-
9114; or in person at the Docket Operations office 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 street address for the Docket Operations office
(telephone 800-647-5527) is in the ADDRESSES section. Comments will be
available in the AD docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Shahram Daneshmandi, Aerospace
Engineer, International Branch, ANM-116, Transport Airplane
Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356;
telephone 425-227-1112; fax 425-227-1149.
SUPPLEMENTARY INFORMATION:
Discussion
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Union, has issued EASA
Airworthiness Directive 2016-0171, dated August 22, 2016 (referred to
after this as the Mandatory Continuing Airworthiness Information, or
``the MCAI''), to correct an unsafe condition for all Saab AB, Saab
Aeronautics Model SAAB 2000 airplanes. The MCAI states:
During inspections, blind fasteners were found installed in
engine mounting structure (EMS) upper fittings, frame NS204.7 and
upper longerons. The type design specifies that the fasteners at
this location must be Hi-Lok fasteners and two solid rivets (monel).
This condition, if not detected and corrected, could cause
cracks development, vibration in the engine mount structure, leading
to failure of the affected engine mount-to-aeroplane structural
connection, possibly resulting in detachment of an engine from the
aeroplane when affecting both sides of a nacelle.
To address this unsafe condition, SAAB issued Service Bulletin
(SB) 2000-54-035 (hereafter referred to as `the SB' in this [EASA]
AD) to provide inspection instructions.
For the reasons described above, this [EASA] AD requires a one-
time * * * [general] visual inspection of the affected areas to
determine which type(s) of fasteners are installed, and, depending
on findings, accomplishment of applicable corrective action(s)
[repair or additional actions as applicable]. This [EASA] AD also
requires reporting of all inspection results to SAAB.
This [EASA] AD is considered an interim action and further AD
action may follow.
Required actions include a detailed inspection for discrepancies,
including gaps between the fastener head and structure, traces of
movement, and deformation of the structure. You may examine the MCAI on
the Internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and
locating Docket No. FAA-2016-9114.
Related Service Information Under 1 CFR Part 51
We reviewed SAAB 2000 Service Bulletin 2000-54-035, Revision 01,
dated August 12, 2016. The service information describes procedures for
an inspection to identify the type of fasteners installed on the upper
longerons and upper fittings of the EMS, and a detailed inspection of
incorrect (blind) fasteners to detect discrepancies, and corrective
actions. 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.
FAA's Determination and Requirements of This AD
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to our bilateral agreement with the State of Design Authority, we have
been notified of the unsafe condition described in the MCAI and service
information referenced above. We are issuing this AD because we
evaluated all pertinent information and determined the unsafe condition
exists and is likely to exist or develop on other products of the same
type design.
FAA's Determination of the Effective Date
An unsafe condition exists that requires the immediate adoption of
this AD. The FAA has found that the risk to the flying public justifies
waiving notice and comment prior to adoption of this rule because
discrepancies of blind fasteners could cause crack development and
vibration in the engine mount structure, which could lead to failure of
the affected engine-mount-to-airplane structural connection and
resultant detachment of an engine from the airplane when both sides of
a nacelle are affected. Therefore, we determined that notice and
opportunity for public comment before issuing this AD are impracticable
and that good cause exists for making this amendment effective in fewer
than 30 days.
Comments Invited
This AD is a final rule that involves requirements affecting flight
safety, and we did not precede it by notice and opportunity for public
comment. We invite you to send any written relevant data, views, or
arguments about this AD. Send your comments to an address listed under
the ADDRESSES section. Include ``Docket No. FAA-2016-9114; Directorate
Identifier 2016-NM-146-AD'' at the beginning of your comments. We
specifically invite comments on the overall regulatory, economic,
environmental, and energy aspects of this AD. We will consider all
comments received by the closing date and may amend this AD based on
those comments.
We will post all comments we receive, without change, to <a href="http://www.regulations.gov">http://www.regulations.gov</a>, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this AD.
Costs of Compliance
We estimate that this AD affects 8 airplanes of U.S. registry.
We also estimate that it will take about 4 work-hours per product
to comply with the basic requirements of this AD. The average labor
rate is $85 per work-hour. Based on these figures, we estimate the cost
of this AD on U.S. operators to be $2,720, or $340 per product.
We have received no definitive data that would enable us to provide
cost
[[Page 66515]]
estimates for the on-condition actions specified in this AD.
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.
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 adding the following new airworthiness
directive (AD):
2016-20-05 Saab AB, Saab Aeronautics (Formerly Known as Saab AB,
Saab Aerosystems): Amendment 39-18671; Docket No. FAA-2016-9114;
Directorate Identifier 2016-NM-146-AD.
(a) Effective Date
This AD becomes effective October 13, 2016.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Saab AB, Saab Aeronautics (formerly known
as Saab AB, Saab Aerosystems) Model SAAB 2000 airplanes,
certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 54, Nacelles/
pylons.
(e) Reason
This AD was prompted by the discovery of blind fasteners
installed in engine mounting structure (EMS) upper fittings that do
not meet the type design. We are issuing this AD to detect and
correct discrepancies of blind fasteners that could cause crack
development and vibration in the engine mount structure, which could
lead to failure of the affected engine-mount-to-airplane structural
connection and resultant detachment of an engine from the airplane
when both sides of a nacelle are affected.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Fastener Identification
Within 30 days or 150 flight hours after the effective date of
this AD, whichever occurs first, do a general visual inspection of
the upper longerons and upper fittings of the EMS to identify the
type of fasteners installed, in accordance with the Accomplishment
Instructions of SAAB 2000 Service Bulletin 2000-54-035, Revision 01,
dated August 12, 2016.
(h) Inspection for Discrepancies
For any fastener other than the fasteners specified in SAAB 2000
Service Bulletin 2000-54-035, Revision 01, dated August 12, 2016,
found during the inspection required by paragraph (g) of this AD:
Before further flight, do a detailed inspection for discrepancies of
those fasteners, including gaps between the fastener heads and
structure, traces of movement, and deformation of the structure, in
accordance with the Accomplishment Instructions of SAAB 2000 Service
Bulletin 2000-54-035, Revision 01, dated August 12, 2016.
(i) Corrective Action
(1) If, during the inspection as required by paragraph (h) of
this AD, any gap between the fastener heads and structure, traces of
movement, or deformation of the structure is found: Before further
flight obtain repair instructions from the Manager, International
Branch, ANM-116, Transport Airplane Directorate, FAA; or the
European Aviation Safety Agency (EASA); or Saab AB, Saab
Aeronautics' EASA Design Organization Approval (DOA); and before
further flight accomplish those instructions accordingly.
(2) If all fasteners inspected as required by paragraph (h) of
this AD are firmly attached, and no deformation of the structure is
found: Within 30 days or 150 flight hours after the effective date
of the AD, whichever occurs first, obtain repair instructions from
the Manager, International Branch, ANM-116, Transport Airplane
Directorate, FAA; or EASA; or Saab AB, Saab Aeronautics' EASA DOA;
and at the applicable time required in the repair instructions,
accomplish the repair accordingly.
(j) Credit for Previous Actions
This paragraph provides credit for actions required by
paragraphs (g) and (h) of this AD, if those actions were performed
before the effective date of this AD using SAAB 2000 Service
Bulletin 2000-54-035, dated July 22, 2016.
(k) Other FAA AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
International Branch, ANM-116, 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 International
Branch, send it to ATTN: Shahram Daneshmandi, Aerospace Engineer,
International Branch, ANM-116, Transport Airplane Directorate, FAA,
1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1112;
fax 425-227-1149. Information may be emailed to: <a href="/cdn-cgi/l/email-protection#427b6f030c0f6f7373746f030f0d016f1007131707111611022423236c252d34"><span class="__cf_email__" data-cfemail="bd8490fcf3f0908c8c8b90fcf0f2fe90eff8ece8f8eee9eefddbdcdc93dad2cb">[email protected]</span></a>. 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.
(2) Contacting the Manufacturer: 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
Branch, ANM-116, Transport Airplane Directorate, FAA; or EASA; or
Saab AB, Saab Aeronautics' EASA DOA. If approved by the DOA, the
approval must include the DOA-authorized signature.
(l) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) EASA Airworthiness Directive 2016-0171, dated August 22,
2016, for related information. You may examine the MCAI on the
Internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating
Docket No. FAA-2016-9114.
(2) Service information identified in this AD that is not
incorporated by reference is
[[Page 66516]]
available at the addresses specified in paragraphs (m)(3) and (m)(4)
of this AD.
(m) 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.
(i) SAAB 2000 Service Bulletin 2000-54-035, Revision 01, dated
August 12, 2016.
(ii) Reserved.
(3) For service information identified in this AD, contact Saab
AB, Saab Aeronautics, SE-581 88, Link[ouml]ping, Sweden; telephone
+46 13 18 5591; fax +46 13 18 4874; email
<a href="/cdn-cgi/l/email-protection#473426262575777777693322242f34323737283533073426262520352832376924282a"><span class="__cf_email__" data-cfemail="b0c3d1d1d2828080809ec4d5d3d8c3c5c0c0dfc2c4f0c3d1d1d2d7c2dfc5c09ed3dfdd">[email protected]</span></a>; Internet <a href="http://www.saabgroup.com">http://www.saabgroup.com</a>.
(4) You may view this service information at the FAA, Transport
Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For
information on the availability of this material at the FAA, call
425-227-1221.
(5) 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 September 14, 2016.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2016-23081 Filed 9-27-16; 8:45 am]
BILLING CODE 4910-13-P
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Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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