AD 2015-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Various | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Numerous reports of unintended lateral oscillations during final approach, just before landing, which could result in loss of lateral control of the airplane, and consequent airplane damage or injury to flightcrew and passengers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install new relays and bracket assemblies, inspect to ensure new relays do not contact adjacent wire bundles, torque bracket assembly installation nuts and ground stud nuts, perform bond resistance tests between bracket assemblies and terminal lugs on ground studs, and conduct related investigative and corrective actions if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Not specified in the provided text.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
The Boeing Company Model 757-200, -200PF, -200CB, and -300 series 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 certain The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes. This AD was prompted by numerous reports of unintended lateral oscillations during final approach, just before landing. This AD requires, depending on airplane configuration, installing new relays and bracket assemblies, inspecting to ensure that the new relays do not contact adjacent wire bundles, torquing the bracket assembly installation nuts and ground stud nuts, doing bond resistance tests between the bracket assemblies and the terminal lugs on the ground studs, and related investigative and corrective actions if necessary. We are issuing this AD to reduce the chance of unintended lateral oscillations near touchdown, which could result in loss of lateral control of the airplane, and consequent airplane damage or injury to flightcrew and passengers.
Applicability Source Text
Show captured applicability text from the source AD
(c) Applicability
This AD applies to The Boeing Company Model 757-200, -200PF, -
200CB, and -300 series airplanes; certificated in any category; as
identified in Boeing Service Bulletin 757-27A0152, Revision 3, dated
October 28, 2013, as revised by Boeing Service Bulletin 757-27A0152,
Revision 4, dated August 26, 2014.
Document Text
Show stored source text (verify against official source)
[Federal Register Volume 80, Number 75 (Monday, April 20, 2015)]
[Rules and Regulations]
[Pages 21645-21649]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2015-08407]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2011-0475; Directorate Identifier 2010-NM-199-AD;
Amendment 39-18137; AD 2015-08-01]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for certain
The Boeing Company Model 757-200, -200PF, -200CB, and -300 series
airplanes. This AD was prompted by numerous reports of unintended
lateral oscillations during final approach, just before landing. This
AD requires, depending on airplane configuration, installing new relays
and bracket assemblies, inspecting to ensure that the new relays do not
contact adjacent wire bundles, torquing the bracket assembly
installation nuts and ground stud nuts, doing bond resistance tests
between the bracket assemblies and the terminal lugs on the ground
studs, and related investigative and corrective actions if necessary.
We are issuing this AD to reduce the chance of unintended lateral
oscillations near touchdown, which could result in loss of lateral
control of the airplane, and consequent airplane damage or injury to
flightcrew and passengers.
DATES: This AD is effective May 26, 2015.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of May 26, 2015.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management, P.
O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-5000,
extension 1; fax 206-766-5680; Internet <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>.
You may view this referenced service information at the FAA, Transport
Airplane Directorate, 1601 Lind Avenue SW.,
[[Page 21646]]
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 2011-
0475.
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-2011-
0475; 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 (phone: 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: Jeffrey Palmer, Aerospace Engineer,
Systems and Equipment Branch, ANM-130L, Los Angeles Aircraft
Certification Office (ACO), FAA, 3960 Paramount Boulevard, Lakewood, CA
90712-4137; phone: 562-627-5351; fax: 562-627-5210; email:
<a href="/cdn-cgi/l/email-protection#ed87888b8b9f8894c39ac39d8c8180889fad8b8c8cc38a829b"><span class="__cf_email__" data-cfemail="9df7f8fbfbeff8e4b3eab3edfcf1f0f8efddfbfcfcb3faf2eb">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a supplemental notice of proposed rulemaking (SNPRM) to
amend 14 CFR part 39 by adding an AD that would apply to certain The
Boeing Company Model 757-200, -200PF, -200CB, and -300 series
airplanes. The SNPRM published in the Federal Register on July 1, 2014
(79 FR 37239). We preceded the SNPRM with a notice of proposed
rulemaking (NPRM) that published in the Federal Register on May 24,
2011 (76 FR 30043). The NPRM proposed to require, for certain
airplanes, installing new relays adjacent to two of the spoiler control
modules. For certain other airplanes, the NPRM proposed to require
torquing the bracket assembly installation nuts and ground stud nuts,
and doing bond resistance tests between the bracket assemblies and the
terminal lugs on the ground studs. The NPRM was prompted by numerous
reports of unintended lateral oscillations during final approach, just
before landing. In addition to the actions proposed in the NPRM, the
SNPRM proposed to require installing three new relays on the opposite
side of the same relay bracket assembly; and for certain airplanes,
doing an additional inspection to ensure that the three new relays do
not contact adjacent wire bundles, and related investigative and
corrective actions if necessary. We are issuing this AD to reduce the
chance of unintended lateral oscillations near touchdown, which could
result in loss of lateral control of the airplane, and consequent
airplane damage or injury to flightcrew and passengers.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the SNPRM (79
FR 37239, July 1, 2014) and the FAA's response to each comment.
Support for the SNPRM (79 FR 37239, July 1, 2014)
American Airlines (AAL) stated that it agrees with the intent of
the SNPRM (79 FR 37239, July 1, 2014). Boeing stated that it agrees
with the NPRM (76 FR 30043, May 24, 2011). We infer that Boeing's
comment refers to the SNPRM.
Request To Withdraw the SNPRM (79 FR 37239, July 1, 2014)
United Airlines (United Engineering) requested data to justify the
release of a new AD. United Engineering stated that it has not received
any reports of pilot-induced oscillations since implementation of AD
2006-23-15, Amendment 39-14827 (71 FR 66657, November 16, 2006). United
Engineering stated that AD 2006-23-15 requires, among other actions,
installing a control wheel damper assembly and vortex generators
(vortilons) on the leading edge of the outboard main flap. United
Engineering also stated that the required work is extensive and that
the impact to operations and the cost of this modification is
considerable.
From these statements, we infer that United Engineering requested
we withdraw the SNPRM (79 FR 37239, July 1, 2014). We do not agree with
the commenter's request to withdraw the SNPRM. AD 2006-23-15, Amendment
39-14827 (71 FR 66657, November 16, 2006), was considered interim
action. To effectively manage the risk, the FAA determined an interim
action needed to be mandated to reduce the risk, while a solution that
fully addresses the unsafe condition was identified and could be
implemented.
The manufacturer has identified an additional modification that is
needed to correct the unsafe condition identified in AD 2006-23-15. We
have determined that this design change not only corrects the unsafe
condition by removing excessive airplane roll authority during landing,
but it will also improve safety by making the Model 757 handling
characteristics more consistent with the other Boeing airplane models.
Also, even though there have only been 12 reports of unintended lateral
oscillations near touchdown, the FAA considers it likely that there may
have been other events that have been unrecognized and/or unreported.
Finally, in developing the compliance time for this AD, we did
consider not only the safety implications of the identified unsafe
condition, but also the practical aspects of an orderly modification of
the fleet including the work required and the impact on operations. We
have determined that it is necessary to proceed with this AD action.
Request To Delay Final Rule Pending Revised Service Information
AAL requested that we delay this final rule until Boeing releases
Boeing Service Bulletin 757-27A0152, Revision 4. AAL noted that Boeing
intended to release Boeing Service Bulletin 757-27A0152, Revision 4,
which would address its concerns regarding certain procedures and
figures in Boeing Service Bulletin 757-27A0152, Revision 1, Dated June
30, 2010.
Since the issuance of the SNPRM (79 FR 37239, July 1, 2014), Boeing
has issued Service Bulletin 757-27A0152, Revision 4, dated August 26,
2014. We have revised this AD to incorporate Boeing Service Bulletin
757-27A0152, Revision 4, dated August 26, 2014, as an appropriate
source of service information for accomplishing the actions required by
this AD. This service bulletin includes a change to a footnote listed
in Figures 15, 16, 17, 19, and 21; this footnote addresses AAL's
concerns regarding certain procedures and figures in Boeing Service
Bulletin 757-27A0152, Revision 1, dated June 30, 2010. Boeing Service
Bulletin 757-27A0152, Revision 4, dated August 26, 2014, states that no
more work is necessary on airplanes changed in accordance with Boeing
Service Bulletin 757-27A0152, Revision 2, dated May 25, 2012; or Boeing
Service Bulletin 757-27A0152, Revision 3, dated October 28, 2013.
We have changed paragraphs (c) and (g) of this AD to reference
Boeing Service Bulletin 757-27A0152, Revision 3, dated October 28,
2013, as revised by Boeing Service Bulletin 757-27A0152, Revision 4,
dated August 26, 2014.
Effect of Winglets on AD
Aviation Partners Boeing stated that the installation of winglets
per Supplemental Type Certificate (STC)
[[Page 21647]]
ST01518SE (http://rgl.faa.gov/Regulatory_and_Guidance_Library/
rgstc.nsf/0/312bc296830a925c86257c85006d1b1f/$FILE/ST01518SE.pdf) does
not affect the accomplishment of the manufacturer's service
instructions. No change is necessary to this AD in this regard.
Related Service Information Under 1 CFR Part 51
We reviewed Boeing Service Bulletin 757-27A0152, Revision 3, dated
October 28, 2013, which describes procedures for installing new relays;
inspecting to ensure that the new relays do not contact adjacent wire
bundles, and related investigative and corrective actions if necessary;
torquing the bracket assembly installation nuts and ground stud nuts;
and doing bond resistance tests between the bracket assemblies and the
terminal lugs on the ground studs.
We have also reviewed Boeing Service Bulletin 757-27A0152, Revision
4, dated August 26, 2014, which provides some revised text in footnotes
of certain figures.
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 of this
AD.
Conclusion
We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
this AD with the changes described and minor editorial changes. We have
determined that these minor changes:
<bullet> Are consistent with the intent that was proposed in the
SNPRM (79 FR 37239, July 1, 2014) for correcting the unsafe condition;
and
<bullet> Do not add any additional burden upon the public than was
already proposed in the SNPRM (79 FR 37239, July 1, 2014).
We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this AD.
Costs of Compliance
We estimate that this AD affects 676 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Installation Group 1, 36 work-hours x $85 per $4,691 $7,751............. $372,048.
Configuration 1 (48 airplanes). hour = $3,060.
Installation Group 2, 33 work-hours x $85 per 4,610 7,415.............. 4,360,020.
Configuration 1 (588 airplanes). hour = $2,805.
Installation Group 3, 33 work-hours x $85 per 4,619 7,424.............. 89,088.
Configuration 1 (12 airplanes). hour = $2,805.
Installation Group 4, 33 work-hours x $85 per 4,610 7,415.............. 177,960.
Configuration 1 (24 airplanes). hour = $2,805.
Installation Group 5, 36 work-hours x $85 per 4,701 7,761.............. 31,044.
Configuration 1 (4 airplanes). hour = $3,060.
Torque Bracket Assembly and Bond 12 work-hours x $85 per 0 Up to $1,020....... Up to $689,520.
Tests Groups 1-5, Configuration hour = $1,020.
2 (Up to 676 airplanes).
General Visual Inspection Groups 7 work-hours x $85 per 0 Up to $595......... Up to $402,220.
1-5, Configuration 3 (Up to 676 hour = $595.
airplanes).
----------------------------------------------------------------------------------------------------------------
We estimate the following costs to do any necessary repairs that
would be required based on the results of the inspection. We have no
way of determining the number of aircraft that might need these
repairs:
On-Condition Costs
------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product
------------------------------------------------------------------------
Adjust Wire Bundle and Install 1 work-hour x $0 $85
Sleeve, Group 1-5, $85 per hour =
Configuration 1. $85.
Inspection, Repair, and 1 work-hour x 0 85
Installation Change, Group 1- $85 per hour =
5, Configuration 2. $85.
Inspection, Repair, 5 work-hours x 0 425
Installation Change, and $85 per hour =
Test, Group 1-5, $425.
Configuration 3.
------------------------------------------------------------------------
We have received no definitive data that would enable us to provide
cost estimates for the parts needed 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
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
[[Page 21648]]
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 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):
2015-08-01 The Boeing Company: Amendment 39-18137; Docket No. FAA-
2011-0475; Directorate Identifier 2010-NM-199-AD.
(a) Effective Date
This AD is effective May 26, 2015.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company Model 757-200, -200PF, -
200CB, and -300 series airplanes; certificated in any category; as
identified in Boeing Service Bulletin 757-27A0152, Revision 3, dated
October 28, 2013, as revised by Boeing Service Bulletin 757-27A0152,
Revision 4, dated August 26, 2014.
(d) Subject
Air Transport Association (ATA) of America Code 27, Flight
Controls.
(e) Unsafe Condition
This AD was prompted by numerous reports of unintended lateral
oscillations during the final approach, just before landing. We are
issuing this AD to reduce the chance of unintended lateral
oscillations near touchdown, which could result in loss of lateral
control of the airplane, and consequent airplane damage or injury to
flightcrew and passengers.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Installation and Inspection
Within 60 months after the effective date of this AD, do the
applicable actions specified in paragraph (g)(1), (g)(2), or (g)(3)
of this AD.
(1) For Configuration 1 airplanes defined in Boeing Service
Bulletin 757-27A0152, Revision 3, dated October 28, 2013, as revised
by Boeing Service Bulletin 757-27A0152, Revision 4, dated August 26,
2014: Install three bracket assemblies and three new relays, and
make changes to the wire bundles, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 757-27A0152,
Revision 3, dated October 28, 2013, as revised by Boeing Service
Bulletin 757-27A0152, Revision 4, dated August 26, 2014.
(2) For Configuration 2 airplanes defined in Boeing Service
Bulletin 757-27A0152, Revision 3, dated October 28, 2013, as revised
by Boeing Service Bulletin 757-27A0152, Revision 4, dated August 26,
2014: Torque the bracket assembly nuts and ground stud nuts, do bond
resistance tests to verify that bonding requirements are met, do a
general visual inspection to ensure that the three new relays do not
touch the adjacent wire bundles, and do all applicable related
investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 757-27A0152,
Revision 3, dated October 28, 2013, as revised by Boeing Service
Bulletin 757-27A0152, Revision 4, dated August 26, 2014. Do all
applicable related investigative and corrective actions before
further flight.
(3) For Configuration 3 airplanes defined in Boeing Service
Bulletin 757-27A0152, Revision 3, dated October 28, 2013, as revised
by Boeing Service Bulletin 757-27A0152, Revision 4, dated August 26,
2014: Do a general visual inspection to ensure that the three new
relays do not touch the adjacent wire bundles, and do all applicable
related investigative and corrective actions, in accordance with the
Accomplishment Instructions of Boeing Service Bulletin 757-27A0152,
Revision 3, dated October 28, 2013, as revised by Boeing Service
Bulletin 757-27A0152, Revision 4, dated August 26, 2014. Do all
applicable related investigative and corrective actions before
further flight.
(h) Credit for Previous Actions
This paragraph provides credit for actions required by paragraph
(g) of this AD, if those actions were performed before the effective
date of this AD using Boeing Service Bulletin 757-27A0152, Revision
2, dated May 25, 2012 (which is not incorporated by reference in
this AD); or Boeing Service Bulletin 757-27A0152, Revision 3, dated
October 28, 2013.
(i) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Los Angeles Aircraft Certification Office
(ACO), 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 ACO, send it to the
attention of the person identified in paragraph (j)(1) of this AD.
Information may be emailed to: <a href="/cdn-cgi/l/email-protection#f0c9ddb1bebdddbcb1b1b3bfddb1bdbfb3dda295818595838483b0969191de979f86"><span class="__cf_email__" data-cfemail="d3eafe929d9efe9f9292909cfe929e9c90fe81b6a2a6b6a0a7a093b5b2b2fdb4bca5">[email protected]</span></a>.
(2) 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.
(3) An AMOC that provides an acceptable level of safety may be
used for any repair required by this AD if it is approved by the
Boeing Commercial Airplanes Organization Designation Authorization
(ODA) that has been authorized by the Manager, Los Angeles ACO, to
make those findings. For a repair method to be approved, the repair
must meet the certification basis of the airplane and the approval
must specifically refer to this AD.
(j) Related Information
(1) For more information about this AD, contact Jeffrey Palmer,
Aerospace Engineer, Systems and Equipment Branch, ANM-130L, Los
Angeles Aircraft Certification Office (ACO), FAA, 3960 Paramount
Boulevard, Lakewood, CA 90712-4137; phone: 562-627-5351; fax: 562-
627-5210; email: <a href="/cdn-cgi/l/email-protection#82e8e7e4e4f0e7fbacf5acf2e3eeefe7f0c2e4e3e3ace5edf4"><span class="__cf_email__" data-cfemail="deb4bbb8b8acbba7f0a9f0aebfb2b3bbac9eb8bfbff0b9b1a8">[email protected]</span></a>.
(2) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (k)(3) and (k)(4) of this AD.
(k) 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 the AD specifies otherwise.
(i) Boeing Service Bulletin 757-27A0152, Revision 3, dated
October 28, 2013.
(ii) Boeing Service Bulletin 757-27A0152, Revision 4, dated
August 26, 2014.
(3) For Boeing service information identified in this AD,
contact Boeing Commercial Airplanes, Attention: Data & Services
Management, P. O. Box 3707, MC 2H-65, Seattle, WA 98124-2207;
telephone 206-544-5000, extension 1; fax 206-766-5680; Internet
<a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>.
(4) You may view this service information at 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>.
[[Page 21649]]
Issued in Renton, Washington, on April 3, 2015.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2015-08407 Filed 4-17-15; 08:45 am]
BILLING CODE 4910-13-P
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.