81 FR 14402 - Airworthiness Directives; The Boeing Company Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 81, Issue 52 (March 17, 2016)
Federal Aviation Administration
Federal Register Volume 81, Issue 52 (March 17, 2016)
| Page Range | 14402-14404 | |
| FR Document | 2016-05831 |
[Federal Register Volume 81, Number 52 (Thursday, March 17, 2016)] [Proposed Rules] [Pages 14402-14404] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2016-05831] ======================================================================== Proposed Rules Federal Register ________________________________________________________________________ This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. ======================================================================== Federal Register / Vol. 81, No. 52 / Thursday, March 17, 2016 / Proposed Rules [[Page 14402]] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2016-4225; Directorate Identifier 2015-NM-139-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to adopt a new airworthiness directive (AD) for The Boeing Company Model 777-200 and -300 series airplanes equipped with Rolls-Royce Model Trent 800 engines. This proposed AD was prompted by reports of damage to the upper bifurcation forward fire seal and seal deflector, and localized damage to the insulation blanket installed just aft of the fire seal. This proposed AD would require installing serviceable thrust reverser (T/R) halves on the left and right engines. We are proposing this AD to prevent a breach in the engine firewall due to a failed upper bifurcation forward fire seal. A breach could delay or prevent the fire detection and suppression system from functioning properly, and could result in an increased risk of a fire, prolonged burning, and breach of the fire zone; and could allow fire to reach unprotected areas of the engine, the strut, and wing after engine shutdown. Also, fan air bypassing the fire seal could cause localized damage to the T/R insulation blanket installed just aft of the fire seal, which could allow limited thermal degradation of the thrust reverser inner wall. This could aggravate existing damage and cause the thrust reverser's inner wall to fail. DATES: We must receive comments on this proposed AD by May 2, 2016. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods:Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. Fax: 202-493-2251. 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. Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this NPRM, 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 https://www.myboeingfleet.com. 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 http://www.regulations.gov by searching for and locating Docket No. FAA-2016-4225. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2016- 4225; 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 proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (phone: 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Kevin Nguyen, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917- 6501; fax: 425-917-6590; email: [email protected]. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2016-4225; Directorate Identifier 2015-NM-139-AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD because of those comments. We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion We received reports of damage to the upper bifurcation forward fire seal and seal deflector. The damage included cracking, wear, and missing material on the fire seal; and cracking and wear on the seal deflector. There was also a report of localized damage to the insulation blanket installed just aft of the damaged fire seal. Boeing has determined that a design deficiency is the most probable root cause for the damage to the upper bifurcation forward fire seal and seal deflector. A combination of factors including operational pressure differential and seal deflections that the system is subjected to during high thrust operation were not accounted for in the design. This design deficiency allows the upper bifurcation forward fire seal to allow air to bypass the sealing interface at the unsupported section, which, over time, damages the upper bifurcation forward fire seal and seal deflector. The T/R firewall seal is an integral part of the fire suppression system for the engine core compartment. A damaged upper bifurcation forward fire seal and seal deflector can result in a breach of the engine firewall and allow airflow into the engine fire zone, which can decrease the effectiveness of the engine fire detection and suppression systems due to excess fan air entering the core compartment fire zone. A breach in the engine firewall could [[Page 14403]] delay or prevent the fire detection and suppression system from functioning properly, and could result in an increased risk of a fire, prolonged burning, and potential breach of the fire zone. A breach of the fire wall could allow fire to reach unprotected areas of the engine, strut, and wing after engine shutdown. Also, engine fan air bypassing the seal could cause localized damage to the T/R insulation blanket installed just aft of the fire seal, which could allow limited thermal degradation of the thrust reverser inner wall. This could aggravate existing damage and cause the thrust reverser's inner wall to fail. Related Service Information Under 1 CFR Part 51 We reviewed Boeing Special Attention Service Bulletin 777-78-0101, Revision 1, dated October 30, 2015. The service information describes procedures for installing serviceable left and right T/R halves on the left and right engines. 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 We are proposing this AD because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Proposed AD Requirements This proposed AD would require accomplishing the actions specified in the service information described previously. Differences Between This Proposed AD and the Service Information The service information specifies the compliance time as 1,875 days. For this proposed AD, we specified a compliance time of 60 months. Other Relevant Rulemaking We have issued additional proposed rulemaking related to the T/Rs for Model 777-200 and -300 series airplanes equipped with Rolls-Royce Model RB211-Trent 800 engines. We issued a supplemental NPRM (SNPRM), Docket No. FAA-2011-0027, Directorate Identifier 2010-NM-127-AD, that published in the Federal Register on September 25, 2015 (80 FR 57744). The SNPRM proposes to require repetitive inspections requirements for T/R halves having a thermal protective system installed. The SNPRM also proposes to require installation of serviceable T/R halves. The SNPRM also proposes to revise the maintenance or inspection program by incorporating new airworthiness limitations. Costs of Compliance We estimate that this proposed AD affects 55 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: Estimated Costs ---------------------------------------------------------------------------------------------------------------- Cost on U.S. Action Labor cost Parts cost Cost per product operators ---------------------------------------------------------------------------------------------------------------- Install serviceable T/R halves Up to 91 work- Up to $7,338......... Up to $15,073 Up to $829,015. hours x $85 per per airplane. hour = $7,735. ---------------------------------------------------------------------------------------------------------------- According to the manufacturer, some of the costs of this proposed 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. Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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 this proposed regulation: (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. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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): The Boeing Company: Docket No. FAA-2016-4225; Directorate Identifier 2015-NM-139-AD. (a) Comments Due Date We must receive comments by May 2, 2016. (b) Affected ADs None. [[Page 14404]] (c) Applicability This AD applies to The Boeing Company Model 777-200 and -300 series airplanes equipped with Rolls-Royce Model Trent 800 engines. (d) Subject Air Transport Association (ATA) of America Code 78, Engine Exhaust. (e) Unsafe Condition This AD was prompted by reports of damage to the upper bifurcation forward fire seal and seal deflector, and localized damage to the insulation blanket installed just aft of the fire seal. We are issuing this AD to prevent a breach in the engine firewall due to a failed upper bifurcation forward fire seal. A breach could delay or prevent the fire detection and suppression system from functioning properly, and could result in an increased risk of a fire, prolonged burning, and breach of the fire zone; and could allow fire to reach unprotected areas of the engine, the strut, and wing after engine shutdown. Also, fan air bypassing the seal could cause localized damage to the thrust reverser (T/R) insulation blanket installed just aft of the fire seal, which could allow limited thermal degradation of the thrust reverser inner wall. This could aggravate existing damage and cause the thrust reverser's inner wall to fail. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Installation of Serviceable T/R Halves on Each Engine Within 60 months after the effective date of this AD: Install serviceable left and right T/R halves on the left and right engines, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-78-0101, Revision 1, dated October 30, 2015. A serviceable T/R half is defined in the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-78- 0101, Revision 1, dated October 30, 2015. (h) Alternative Methods of Compliance (AMOCs) (1) The Manager, Seattle 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 (i) of this AD. Information may be emailed to: [email protected]. (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, modification, or alteration required by this AD if it is approved by the Boeing Commercial Airplanes Organization Designation Authorization (ODA) that has been authorized by the Manager, Seattle ACO, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane and the approval must specifically refer to this AD. (4) For service information that contains steps that are labeled as Required for Compliance (RC), the provisions of paragraphs (h)(4)(i) and (h)(4)(ii) apply. (i) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. An AMOC is required for any deviations to RC steps, including substeps and identified figures. (ii) Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. (i) Related Information (1) For more information about this AD, contact Kevin Nguyen, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6501; fax: 425-917-6590; email: [email protected]. (2) 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 https://www.myboeingfleet.com. 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. Issued in Renton, Washington, on March 9, 2016. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2016-05831 Filed 3-16-16; 8:45 am] BILLING CODE 4910-13-P
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Proposed Rules Federal Register
Vol. 81, No. 52
Thursday, March 17, 2016
This section of the FEDERAL REGISTER 11.43 and 11.45, by any of the following Comments Invited
contains notices to the public of the proposed methods: We invite you to send any written
issuance of rules and regulations. The
• Federal eRulemaking Portal: Go to relevant data, views, or arguments about
purpose of these notices is to give interested
persons an opportunity to participate in the http://www.regulations.gov. Follow the this proposal. Send your comments to
rule making prior to the adoption of the final instructions for submitting comments. an address listed under the ADDRESSES
rules. • Fax: 202–493–2251. section. Include ‘‘Docket No. FAA–
• Mail: U.S. Department of 2016–4225; Directorate Identifier 2015–
Transportation, Docket Operations, M– NM–139–AD’’ at the beginning of your
DEPARTMENT OF TRANSPORTATION 30, West Building Ground Floor, Room comments. We specifically invite
W12–140, 1200 New Jersey Avenue SE., comments on the overall regulatory,
Federal Aviation Administration economic, environmental, and energy
Washington, DC 20590.
aspects of this proposed AD. We will
14 CFR Part 39 • Hand Delivery: Deliver to Mail
consider all comments received by the
address above between 9 a.m. and 5
[Docket No. FAA–2016–4225; Directorate closing date and may amend this
p.m., Monday through Friday, except
Identifier 2015–NM–139–AD] proposed AD because of those
Federal holidays.
RIN 2120–AA64
comments.
For service information identified in We will post all comments we
Airworthiness Directives; The Boeing this NPRM, contact Boeing Commercial receive, without change, to http://
Company Airplanes Airplanes, Attention: Data & Services www.regulations.gov, including any
Management, P.O. Box 3707, MC 2H–65, personal information you provide. We
AGENCY: Federal Aviation Seattle, WA 98124–2207; telephone will also post a report summarizing each
Administration (FAA), DOT. 206–544–5000, extension 1; fax 206– substantive verbal contact we receive
ACTION: Notice of proposed rulemaking 766–5680; Internet https:// about this proposed AD.
(NPRM). www.myboeingfleet.com. You may view
this referenced service information at Discussion
SUMMARY: We propose to adopt a new the FAA, Transport Airplane We received reports of damage to the
airworthiness directive (AD) for The Directorate, 1601 Lind Avenue SW., upper bifurcation forward fire seal and
Boeing Company Model 777–200 and Renton, WA. For information on the seal deflector. The damage included
–300 series airplanes equipped with availability of this material at the FAA, cracking, wear, and missing material on
Rolls-Royce Model Trent 800 engines. call 425–227–1221. It is also available the fire seal; and cracking and wear on
This proposed AD was prompted by on the Internet at http:// the seal deflector. There was also a
reports of damage to the upper www.regulations.gov by searching for report of localized damage to the
bifurcation forward fire seal and seal and locating Docket No. FAA–2016– insulation blanket installed just aft of
deflector, and localized damage to the 4225. the damaged fire seal. Boeing has
insulation blanket installed just aft of determined that a design deficiency is
the fire seal. This proposed AD would Examining the AD Docket
the most probable root cause for the
require installing serviceable thrust You may examine the AD docket on damage to the upper bifurcation forward
reverser (T/R) halves on the left and the Internet at http:// fire seal and seal deflector. A
right engines. We are proposing this AD www.regulations.gov by searching for combination of factors including
to prevent a breach in the engine and locating Docket No. FAA–2016– operational pressure differential and
firewall due to a failed upper 4225; or in person at the Docket seal deflections that the system is
bifurcation forward fire seal. A breach Management Facility between 9 a.m. subjected to during high thrust
could delay or prevent the fire detection and 5 p.m., Monday through Friday, operation were not accounted for in the
and suppression system from except Federal holidays. The AD docket design. This design deficiency allows
functioning properly, and could result contains this proposed AD, the the upper bifurcation forward fire seal
in an increased risk of a fire, prolonged regulatory evaluation, any comments to allow air to bypass the sealing
burning, and breach of the fire zone; and received, and other information. The interface at the unsupported section,
could allow fire to reach unprotected street address for the Docket Office which, over time, damages the upper
areas of the engine, the strut, and wing (phone: 800–647–5527) is in the bifurcation forward fire seal and seal
after engine shutdown. Also, fan air ADDRESSES section. Comments will be deflector.
bypassing the fire seal could cause available in the AD docket shortly after The T/R firewall seal is an integral
localized damage to the T/R insulation receipt. part of the fire suppression system for
blanket installed just aft of the fire seal, the engine core compartment. A
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS
which could allow limited thermal FOR FURTHER INFORMATION CONTACT:
damaged upper bifurcation forward fire
degradation of the thrust reverser inner Kevin Nguyen, Aerospace Engineer, seal and seal deflector can result in a
wall. This could aggravate existing Propulsion Branch, ANM–140S, FAA, breach of the engine firewall and allow
damage and cause the thrust reverser’s Seattle Aircraft Certification Office airflow into the engine fire zone, which
inner wall to fail. (ACO), 1601 Lind Avenue SW., Renton, can decrease the effectiveness of the
DATES: We must receive comments on WA 98057–3356; phone: 425–917–6501; engine fire detection and suppression
this proposed AD by May 2, 2016. fax: 425–917–6590; email: systems due to excess fan air entering
ADDRESSES: You may send comments,
kevin.nguyen@faa.gov. the core compartment fire zone. A
using the procedures found in 14 CFR SUPPLEMENTARY INFORMATION: breach in the engine firewall could
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![Federal Register / Vol. 81, No. 52 / Thursday, March 17, 2016 / Proposed Rules 14403
delay or prevent the fire detection and right engines. This service information Other Relevant Rulemaking
suppression system from functioning is reasonably available because the
We have issued additional proposed
properly, and could result in an interested parties have access to it
rulemaking related to the T/Rs for
increased risk of a fire, prolonged through their normal course of business
Model 777–200 and –300 series
burning, and potential breach of the fire or by the means identified in the
airplanes equipped with Rolls-Royce
zone. A breach of the fire wall could ADDRESSES section.
Model RB211–Trent 800 engines. We
allow fire to reach unprotected areas of FAA’s Determination issued a supplemental NPRM (SNPRM),
the engine, strut, and wing after engine Docket No. FAA–2011–0027, Directorate
shutdown. Also, engine fan air We are proposing this AD because we
evaluated all the relevant information Identifier 2010–NM–127–AD, that
bypassing the seal could cause localized published in the Federal Register on
damage to the T/R insulation blanket and determined the unsafe condition
described previously is likely to exist or September 25, 2015 (80 FR 57744). The
installed just aft of the fire seal, which SNPRM proposes to require repetitive
could allow limited thermal degradation develop in other products of the same
type design. inspections requirements for T/R halves
of the thrust reverser inner wall. This having a thermal protective system
could aggravate existing damage and Proposed AD Requirements installed. The SNPRM also proposes to
cause the thrust reverser’s inner wall to require installation of serviceable T/R
This proposed AD would require
fail. halves. The SNPRM also proposes to
accomplishing the actions specified in
Related Service Information Under 1 the service information described revise the maintenance or inspection
CFR Part 51 previously. program by incorporating new
airworthiness limitations.
We reviewed Boeing Special Differences Between This Proposed AD
and the Service Information Costs of Compliance
Attention Service Bulletin 777–78–
0101, Revision 1, dated October 30, The service information specifies the We estimate that this proposed AD
2015. The service information describes compliance time as 1,875 days. For this affects 55 airplanes of U.S. registry.
procedures for installing serviceable left proposed AD, we specified a We estimate the following costs to
and right T/R halves on the left and compliance time of 60 months. comply with this proposed AD:
ESTIMATED COSTS
Cost on
Action Labor cost Parts cost Cost per product U.S. operators
Install serviceable T/R halves ...... Up to 91 work-hours × $85 per Up to $7,338 .... Up to $15,073 per airplane .......... Up to $829,015.
hour = $7,735.
According to the manufacturer, some products identified in this rulemaking List of Subjects in 14 CFR Part 39
of the costs of this proposed AD may be action.
covered under warranty, thereby Air transportation, Aircraft, Aviation
Regulatory Findings safety, Incorporation by reference,
reducing the cost impact on affected
individuals. We do not control warranty Safety.
We determined that this proposed AD
coverage for affected individuals. As a would not have federalism implications The Proposed Amendment
result, we have included all costs in our under Executive Order 13132. This
cost estimate. Accordingly, under the authority
proposed AD would not have a delegated to me by the Administrator,
Authority for This Rulemaking substantial direct effect on the States, on the FAA proposes to amend 14 CFR part
the relationship between the national 39 as follows:
Title 49 of the United States Code Government and the States, or on the
specifies the FAA’s authority to issue distribution of power and PART 39—AIRWORTHINESS
rules on aviation safety. Subtitle I, responsibilities among the various DIRECTIVES
section 106, describes the authority of levels of government.
the FAA Administrator. Subtitle VII: For the reasons discussed above, I ■ 1. The authority citation for part 39
Aviation Programs, describes in more certify this proposed regulation: continues to read as follows:
detail the scope of the Agency’s Authority: 49 U.S.C. 106(g), 40113, 44701.
authority. (1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866, § 39.13 [Amended]
We are issuing this rulemaking under
the authority described in Subtitle VII, (2) Is not a ‘‘significant rule’’ under ■ 2. The FAA amends § 39.13 by adding
Part A, Subpart III, Section 44701: the DOT Regulatory Policies and the following new airworthiness
‘‘General requirements.’’ Under that Procedures (44 FR 11034, February 26, directive (AD):
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS
section, Congress charges the FAA with 1979),
The Boeing Company: Docket No. FAA–
promoting safe flight of civil aircraft in (3) Will not affect intrastate aviation 2016–4225; Directorate Identifier 2015–
air commerce by prescribing regulations in Alaska, and NM–139–AD.
for practices, methods, and procedures (4) Will not have a significant (a) Comments Due Date
the Administrator finds necessary for economic impact, positive or negative, We must receive comments by May 2,
safety in air commerce. This regulation on a substantial number of small entities 2016.
is within the scope of that authority under the criteria of the Regulatory
because it addresses an unsafe condition (b) Affected ADs
Flexibility Act.
that is likely to exist or develop on None.
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(c) Applicability Commercial Airplanes Organization SUMMARY: We propose to supersede
This AD applies to The Boeing Company Designation Authorization (ODA) that has Airworthiness Directive (AD) 2003–25–
Model 777–200 and -300 series airplanes been authorized by the Manager, Seattle 07 for certain Airbus Model A319 and
equipped with Rolls-Royce Model Trent 800 ACO, to make those findings. To be
A320 series airplanes; and AD 2005–13–
engines. approved, the repair method, modification
deviation, or alteration deviation must meet 39 for certain Airbus Model A321 series
(d) Subject the certification basis of the airplane and the airplanes. AD 2003–25–07 currently
Air Transport Association (ATA) of approval must specifically refer to this AD. requires a revision to the airplane flight
America Code 78, Engine Exhaust. (4) For service information that contains manual (AFM) and replacement of both
steps that are labeled as Required for elevator aileron computers (ELACs)
(e) Unsafe Condition Compliance (RC), the provisions of having L80 standards with new ELACs
This AD was prompted by reports of paragraphs (h)(4)(i) and (h)(4)(ii) apply. having L81 standards. AD 2005–13–39
damage to the upper bifurcation forward fire (i) The steps labeled as RC, including
currently requires a revision to the
seal and seal deflector, and localized damage substeps under an RC step and any figures
identified in an RC step, must be done to AFM, replacement of existing ELACs
to the insulation blanket installed just aft of with ELACs having either L83 or L91
the fire seal. We are issuing this AD to comply with the AD. An AMOC is required
prevent a breach in the engine firewall due for any deviations to RC steps, including standards, as applicable; and a
to a failed upper bifurcation forward fire seal. substeps and identified figures. concurrent action. Since we issued AD
A breach could delay or prevent the fire (ii) Steps not labeled as RC may be 2003–25–07 and AD 2005–13–39, we
detection and suppression system from deviated from using accepted methods in have determined that new ELAC
functioning properly, and could result in an accordance with the operator’s maintenance standards must be incorporated. The
increased risk of a fire, prolonged burning, or inspection program without obtaining
ELAC standards have been upgraded to
and breach of the fire zone; and could allow approval of an AMOC, provided the RC steps,
including substeps and identified figures, can version L97+, which implements
fire to reach unprotected areas of the engine, enhanced angle-of-attack (AOA)
the strut, and wing after engine shutdown. still be done as specified, and the airplane
can be put back in an airworthy condition. monitoring to better detect AOA
Also, fan air bypassing the seal could cause
localized damage to the thrust reverser (T/R)
blockage, including multiple AOA
(i) Related Information
insulation blanket installed just aft of the fire blockages. This proposed AD would
(1) For more information about this AD, require replacing existing ELACs with
seal, which could allow limited thermal
contact Kevin Nguyen, Aerospace Engineer, new ELACs having L97+ standards or
degradation of the thrust reverser inner wall.
Propulsion Branch, ANM–140S, FAA, Seattle
This could aggravate existing damage and
Aircraft Certification Office (ACO), 1601 Lind
revising the software in an existing
cause the thrust reverser’s inner wall to fail. ELAC to the L97+ standards, as
Avenue SW., Renton, WA 98057–3356;
(f) Compliance phone: 425–917–6501; fax: 425–917–6590; applicable, which would terminate the
email: kevin.nguyen@faa.gov. requirements of AD 2003–25–07 and AD
Comply with this AD within the
compliance times specified, unless already (2) For service information identified in 2005–13–39. This proposed AD would
done. this AD, contact Boeing Commercial also add Airbus Model A318 series
Airplanes, Attention: Data & Services airplanes to the applicability. We are
(g) Installation of Serviceable T/R Halves on Management, P.O. Box 3707, MC 2H–65, proposing this AD to prevent
Each Engine Seattle, WA 98124–2207; telephone 206– inadvertent activation of the AOA
Within 60 months after the effective date 544–5000, extension 1; fax 206–766–5680;
Internet https://www.myboeingfleet.com. You
protections. Inadvertent activation of
of this AD: Install serviceable left and right the AOA protections could result in a
T/R halves on the left and right engines, in may view this referenced service information
at the FAA, Transport Airplane Directorate, continuous nose down pitch rate that
accordance with the Accomplishment
Instructions of Boeing Special Attention 1601 Lind Avenue SW., Renton, WA. For could result in reduced controllability
Service Bulletin 777–78–0101, Revision 1, information on the availability of this of the airplane.
dated October 30, 2015. A serviceable T/R material at the FAA, call 425–227–1221. DATES: We must receive comments on
half is defined in the Accomplishment
Issued in Renton, Washington, on March 9,
this proposed AD by May 2, 2016.
Instructions of Boeing Special Attention ADDRESSES: You may send comments by
Service Bulletin 777–78–0101, Revision 1, 2016.
Michael Kaszycki, any of the following methods:
dated October 30, 2015.
Acting Manager, Transport Airplane • Federal eRulemaking Portal: Go to
(h) Alternative Methods of Compliance http://www.regulations.gov. Follow the
Directorate, Aircraft Certification Service.
(AMOCs) instructions for submitting comments.
[FR Doc. 2016–05831 Filed 3–16–16; 8:45 am]
(1) The Manager, Seattle Aircraft • Fax: 202–493–2251.
Certification Office (ACO), FAA, has the BILLING CODE 4910–13–P
• Mail: U.S. Department of
authority to approve AMOCs for this AD, if Transportation, Docket Operations, M–
requested using the procedures found in 14 30, West Building Ground Floor, Room
CFR 39.19. In accordance with 14 CFR 39.19, DEPARTMENT OF TRANSPORTATION
W12–140, 1200 New Jersey Avenue SE.,
send your request to your principal inspector
Federal Aviation Administration Washington, DC 20590.
or local Flight Standards District Office, as
appropriate. If sending information directly • Hand Delivery: U.S. Department of
to the manager of the ACO, send it to the 14 CFR Part 39 Transportation, Docket Operations, M–
attention of the person identified in 30, West Building Ground Floor, Room
[Docket No. FAA–2016–4226; Directorate W12–140, 1200 New Jersey Avenue SE.,
paragraph (i) of this AD. Information may be
Identifier 2015–NM–095–AD]
emailed to: 9-ANM-Seattle-ACO-AMOC- Washington, DC, between 9 a.m. and 5
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS
Requests@faa.gov. RIN 2120–AA64 p.m., Monday through Friday, except
(2) Before using any approved AMOC, Federal holidays.
notify your appropriate principal inspector, Airworthiness Directives; Airbus For service information identified in
or lacking a principal inspector, the manager Airplanes this NPRM, contact Airbus,
of the local flight standards district office/
certificate holding district office. AGENCY: Federal Aviation Airworthiness Office—EIAS, 1 Rond
(3) An AMOC that provides an acceptable Administration (FAA), DOT. Point Maurice Bellonte, 31707 Blagnac
level of safety may be used for any repair, Cedex, France; telephone +33 5 61 93 36
ACTION: Notice of proposed rulemaking
modification, or alteration required by this 96; fax +33 5 61 93 44 51; email
(NPRM).
AD if it is approved by the Boeing account.airworth-eas@airbus.com;
VerDate Sep<11>2014 16:06 Mar 16, 2016 Jkt 238001 PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 E:\FR\FM\17MRP1.SGM 17MRP1](https://thefederalregister.org/doc/81_FR_14454/page/3.svg)
Document Created: 2016-03-17 00:58:32
Document Modified: 2016-03-17 00:58:32
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Proposed Rules | |
| Action | Notice of proposed rulemaking (NPRM). | |
| Dates | We must receive comments on this proposed AD by May 2, 2016. | |
| Contact | Kevin Nguyen, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917- 6501; fax: 425-917-6590; email: [email protected] | |
| FR Citation | 81 FR 14402 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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