81 FR 88145 - Airworthiness Directives; General Electric Company Turbofan Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 235 (December 7, 2016)

Page Range		88145-88147
FR Document		2016-28667

We propose to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) GE90 turbofan engines. This proposed AD was prompted by a report of an engine and airplane fire. This proposed AD would require replacing affected fuel/oil lube/servo coolers (``main heat exchangers'') with a part eligible for installation. We are proposing this AD to prevent failure of a main heat exchanger, which could result in an engine fire.

Federal Register, Volume 81 Issue 235 (Wednesday, December 7, 2016)

[Federal Register Volume 81, Number 235 (Wednesday, December 7, 2016)]
[Proposed Rules]
[Pages 88145-88147]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-28667]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-9167; Directorate Identifier 2016-NE-20-AD]
RIN 2120-AA64


Airworthiness Directives; General Electric Company Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain General Electric Company (GE) GE90 turbofan engines. This 
proposed AD was prompted by a report of an engine and airplane fire. 
This proposed AD would require replacing affected fuel/oil lube/servo 
coolers (``main heat exchangers'') with a part eligible for 
installation. We are proposing this AD to prevent failure of a main 
heat exchanger, which could result in an engine fire.

DATES: We must receive comments on this proposed AD by January 23, 
2017.

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 General 
Electric Company, GE-Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 
45215, phone: 513-552-3272; email: [email protected]. You 
may view this referenced service information at the FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA. For 
information on the availability of this material at the FAA, call 781-
238-7125.

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-
9167; or in person at the Docket Management Facility between 9 a.m.

[[Page 88146]]

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: John Frost, Aerospace Engineer, Engine 
Certification Office, FAA, 1200 District Avenue, Burlington, MA 01803; 
phone: 781-238-7756; fax: 781-238-7199; email: [email protected].

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this NPRM. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-FAA-2016-9167; 
Directorate Identifier 2016-NE-20-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this NPRM. We will 
consider all comments received by the closing date and may amend this 
NPRM 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 NPRM.

Discussion

    We propose to adopt an AD for certain GE GE90-76B, GE90-85B, GE90-
90B, GE90-94B, GE90-110B1, and GE90-115B turbofan engines with a main 
heat exchanger, part number (P/N) 1838M88P11 or 1838M88P13.
    This proposed AD is prompted by a report of an airplane fire caused 
by a failed main heat exchanger. The incident investigation determined 
the cause to be an internal main heat exchanger tube separation, which 
resulted in leakage of fuel into the oil system, causing oil sump 
flooding that overwhelmed the scavenge and venting system. This 
condition, if not corrected, could result in failure of a main heat 
exchanger, which could cause an engine fire. To correct this unsafe 
condition, we propose to require replacing the main heat exchanger with 
a part not affected by this proposed AD or with a part that is repaired 
in accordance with the manufacturer's service information.

Related Service Information Under 1 CFR Part 51

    We reviewed GE Service Bulletin (SB) GE90-100 SB 79-0034, Revision 
03, dated August 5, 2016, and SB GE90 SB 79-0058, Revision 02, dated 
August 5, 2016. This service information describes procedures to 
replace and repair a main heat exchanger. These documents are distinct 
since they apply to different engine models.
    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 replacing the affected main heat 
exchangers with a part eligible for installation.

Costs of Compliance

    We estimate that this proposed AD affects 185 engines installed on 
airplanes of U.S. registry. We estimate the following costs to comply 
with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
              Action                        Labor cost            Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Replace main heat exchanger.......  5 work-hours x $85 per             $7,000           $7,425       $1,373,625
                                     hour = $425.
----------------------------------------------------------------------------------------------------------------

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):


[[Page 88147]]


General Electric Company: Docket No. FAA-2016-9167; Directorate 
Identifier 2016-NE-20-AD.

(a) Comments Due Date

    We must receive comments by January 23, 2017.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to General Electric Company (GE) GE90-76B, GE90-
85B, GE90-90B, GE90-94B, GE90-110B1, and GE90-115B turbofan engines 
with a fuel/oil lube/servo cooler (``main heat exchanger'') part 
number (P/N) 1838M88P11 or 1838M88P13, with a serial number listed 
in paragraph 1.A of GE Service Bulletin (SB) GE90-100 SB 79-0034, 
Revision 03, dated August 05, 2016; or SB GE90 SB 79-0058, Revision 
02, dated August 05, 2016.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7921, Engine Oil 
Cooler.

(e) Unsafe Condition

    This AD was prompted by an engine and airplane fire. We are 
issuing this AD to prevent failure of a main heat exchanger, which 
could result in an engine fire.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions

    Within 12 months after the effective date of this AD, replace 
the main heat exchanger with a part eligible for installation.

(h) Definition

    For purposes of this AD, a part eligible for installation is a 
main heat exchanger with a P/N and serial number not listed in 
paragraph (c) of this AD or a main heat exchanger repaired in 
accordance with the Accomplishment Instructions, paragraphs 3.C.(2) 
through 3.C.(7), of GE SB GE90-100 SB 79-0034, dated December 3, 
2014; Revision 01, dated August 14, 2015; Revision 02, dated 
November 6, 2015; or Revision 03, dated August 5, 2016; or GE SB 
GE90 SB 79-0058, dated August 18, 2015; Revision 01, dated December 
10, 2015; or Revision 02, dated August 05, 2016.

(i) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Engine Certification Office, FAA, may approve 
AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make 
your request. You may email your request 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.

(j) Related Information

    (1) For more information about this AD, contact John Frost, 
Aerospace Engineer, Engine Certification Office, FAA, 1200 District 
Avenue, Burlington, MA 01803; phone: 781-238-7756; fax: 781-238-
7199; email: [email protected].
    (2) For service information identified in this AD, contact 
General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, 
Cincinnati, OH 45215, phone: 513-552-3272; email: 
[email protected].
    (3) You may view this referenced service information at the FAA, 
Engine & Propeller Directorate, 1200 District Avenue, Burlington, 
MA. For information on the availability of this material at the FAA, 
call 781-238-7125.

    Issued in Burlington, Massachusetts, on November 16, 2016.
Colleen M. D'Alessandro,
Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-28667 Filed 12-6-16; 8:45 am]
 BILLING CODE 4910-13-P

Federal Register / Vol. 81, No. 235 / Wednesday, December 7, 2016 / Proposed Rules 88145

responsibilities among the various (e) Required Actions DEPARTMENT OF TRANSPORTATION
levels of government. Within 100 hours time-in-service, remove
For the reasons discussed, I certify the pilot collective lever and visually inspect Federal Aviation Administration
this proposed regulation: the pilot collective lever wiring harness for
1. Is not a ‘‘significant regulatory proper installation of the heat-shrinkable 14 CFR Part 39
action’’ under Executive Order 12866; sleeve and transparent sleeve and for damage [Docket No. FAA–2016–9167; Directorate
2. Is not a ‘‘significant rule’’ under the in accordance with paragraph 3.B.2.1 and as Identifier 2016–NE–20–AD]
DOT Regulatory Policies and Procedures depicted in Figure 2 of Airbus Helicopters
(44 FR 11034, February 26, 1979); Alert Service Bulletin MBB–BK117 C–2– RIN 2120–AA64
3. Will not affect intrastate aviation in 88A–010, Revision 1, dated April 16, 2015
Alaska to the extent that it justifies Airworthiness Directives; General
(ASB).
making a regulatory distinction; and Electric Company Turbofan Engines
(1) If the heat-shrinkable sleeve and
4. Will not have a significant transparent sleeve are installed as depicted in AGENCY: Federal Aviation
economic impact, positive or negative, Figure 2 of the ASB and there is no damage, Administration (FAA), DOT.
on a substantial number of small entities install the collective lever in accordance with
under the criteria of the Regulatory ACTION: Notice of proposed rulemaking
paragraphs 3.B.2.3.a through 3.B.2.3.f of the (NPRM).
Flexibility Act. ASB.
We prepared an economic evaluation (2) If the heat-shrinkable sleeve or SUMMARY: We propose to adopt a new
of the estimated costs to comply with transparent sleeve is installed as depicted in airworthiness directive (AD) for certain
this proposed AD and placed it in the Figure 3, Detail B of the ASB, alter the heat- General Electric Company (GE) GE90
AD docket. shrinkable sleeve as depicted in Figure 3, turbofan engines. This proposed AD was
List of Subjects in 14 CFR Part 39 Detail C. prompted by a report of an engine and
(3) If the transparent sleeve is damaged as airplane fire. This proposed AD would
Air transportation, Aircraft, Aviation depicted in Figure 4, Detail D of the ASB,
safety, Incorporation by reference, require replacing affected fuel/oil lube/
replace the heat-shrinkable sleeve, servo coolers (‘‘main heat exchangers’’)
Safety. transparent sleeve, and identification sleeve. with a part eligible for installation. We
The Proposed Amendment Replace any wire that has a nick, scratch, cut, are proposing this AD to prevent failure
or is frayed. of a main heat exchanger, which could
Accordingly, under the authority
delegated to me by the Administrator, (f) Alternative Methods of Compliance result in an engine fire.
the FAA proposes to amend 14 CFR part (AMOCs) DATES: We must receive comments on
39 as follows: (1) The Manager, Safety Management this proposed AD by January 23, 2017.
Group, FAA, may approve AMOCs for this ADDRESSES: You may send comments,
PART 39—AIRWORTHINESS AD. Send your proposal to: George Schwab, using the procedures found in 14 CFR
DIRECTIVES Aviation Safety Engineer, Safety Management 11.43 and 11.45, by any of the following
■ 1. The authority citation for part 39 Group, Rotorcraft Directorate, FAA, 10101 methods:
continues to read as follows: Hillwood Pkwy, Fort Worth, TX 76177; • Federal eRulemaking Portal: Go to
telephone (817) 222–5110; email 9-ASW- http://www.regulations.gov. Follow the
Authority: 49 U.S.C. 106(g), 40113, 44701. FTW-AMOC-Requests@faa.gov. instructions for submitting comments.
§ 39.13 [Amended] (2) For operations conducted under a 14 • Fax: 202–493–2251.
■ 2. The FAA amends § 39.13 by adding CFR part 119 operating certificate or under • Mail: U.S. Department of
14 CFR part 91, subpart K, we suggest that Transportation, Docket Operations, M–
the following new airworthiness
you notify your principal inspector, or 30, West Building Ground Floor, Room
directive (AD):
lacking a principal inspector, the manager of W12–140, 1200 New Jersey Avenue SE.,
Airbus Helicopters Deutschland GmbH the local flight standards district office or
Helicopters: Docket No. FAA–2016–
Washington, DC 20590.
6436; Directorate Identifier 2015–SW–
certificate holding district office before • Hand Delivery: Deliver to Mail
operating any aircraft complying with this address above between 9 a.m. and 5
037–AD.
AD through an AMOC. p.m., Monday through Friday, except
(a) Applicability
(g) Additional Information Federal holidays.
This AD applies to Airbus Helicopters For service information identified in
Deutschland GmbH Model MBB–BK 117 C– The subject of this AD is addressed in
this NPRM, contact General Electric
2 helicopters, serial numbers 9004 through European Aviation Safety Agency (EASA) AD
9708, certificated in any category.
Company, GE-Aviation, Room 285, 1
No. 2015–0144, dated July 21, 2015. You may
view the EASA AD on the Internet at http://
Neumann Way, Cincinnati, OH 45215,
(b) Unsafe Condition phone: 513–552–3272; email:
www.regulations.gov in the AD Docket.
This AD defines the unsafe condition as an aviation.fleetsupport@ge.com. You may
incorrectly installed heat-shrinkable sleeve (h) Subject view this referenced service information
on the collective lever wiring harness. This at the FAA, Engine & Propeller
Joint Aircraft Service Component (JASC)
condition could result in chafing of the Directorate, 1200 District Avenue,
wiring and subsequent failure of the hoist Code: Wheel/Ski/Float/Emergency
cable cutter or emergency landing gear Equipment, 3246/2560. Burlington, MA. For information on the
availability of this material at the FAA,
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS

flotation systems. Issued in Fort Worth, Texas, on November
call 781–238–7125.
(c) Comments Due Date 21, 2016.
We must receive comments by February 6, Lance T. Gant, Examining the AD Docket
2017. Manager, Rotorcraft Directorate, Aircraft You may examine the AD docket on
(d) Compliance Certification Service. the Internet at http://
You are responsible for performing each [FR Doc. 2016–28670 Filed 12–6–16; 8:45 am] www.regulations.gov by searching for
action required by this AD within the BILLING CODE 4910–13–P and locating Docket No. FAA–2016–
specified compliance time unless it has 9167; or in person at the Docket
already been accomplished prior to that time. Management Facility between 9 a.m.

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88146 Federal Register / Vol. 81, No. 235 / Wednesday, December 7, 2016 / Proposed Rules

and 5 p.m., Monday through Friday, www.regulations.gov, including any dated August 5, 2016, and SB GE90 SB
except Federal holidays. The AD docket personal information you provide. We 79–0058, Revision 02, dated August 5,
contains this proposed AD, the will also post a report summarizing each 2016. This service information describes
regulatory evaluation, any comments substantive verbal contact we receive procedures to replace and repair a main
received, and other information. The about this NPRM. heat exchanger. These documents are
street address for the Docket Office Discussion distinct since they apply to different
(phone: 800–647–5527) is in the engine models.
ADDRESSES section. Comments will be We propose to adopt an AD for certain
available in the AD docket shortly after GE GE90–76B, GE90–85B, GE90–90B, This service information is reasonably
receipt. GE90–94B, GE90–110B1, and GE90– available because the interested parties
115B turbofan engines with a main heat have access to it through their normal
FOR FURTHER INFORMATION CONTACT: John
exchanger, part number (P/N) course of business or by the means
Frost, Aerospace Engineer, Engine
1838M88P11 or 1838M88P13. identified in the ADDRESSES section.
Certification Office, FAA, 1200 District This proposed AD is prompted by a
Avenue, Burlington, MA 01803; phone: report of an airplane fire caused by a FAA’s Determination
781–238–7756; fax: 781–238–7199; failed main heat exchanger. The
email: john.frost@faa.gov. We are proposing this AD because we
incident investigation determined the
SUPPLEMENTARY INFORMATION: evaluated all the relevant information
cause to be an internal main heat
and determined the unsafe condition
Comments Invited exchanger tube separation, which
resulted in leakage of fuel into the oil described previously is likely to exist or
We invite you to send any written system, causing oil sump flooding that develop in other products of the same
relevant data, views, or arguments about overwhelmed the scavenge and venting type design.
this NPRM. Send your comments to an system. This condition, if not corrected, Proposed AD Requirements
address listed under the ADDRESSES could result in failure of a main heat
section. Include ‘‘Docket No. FAA– exchanger, which could cause an engine This proposed AD would require
FAA–2016–9167; Directorate Identifier fire. To correct this unsafe condition, we replacing the affected main heat
2016–NE–20–AD’’ at the beginning of propose to require replacing the main exchangers with a part eligible for
your comments. We specifically invite heat exchanger with a part not affected installation.
comments on the overall regulatory, by this proposed AD or with a part that
economic, environmental, and energy is repaired in accordance with the Costs of Compliance
aspects of this NPRM. We will consider manufacturer’s service information.
all comments received by the closing We estimate that this proposed AD
date and may amend this NPRM Related Service Information Under 1 affects 185 engines installed on
because of those comments. CFR Part 51 airplanes of U.S. registry. We estimate
We will post all comments we We reviewed GE Service Bulletin (SB) the following costs to comply with this
receive, without change, to http:// GE90–100 SB 79–0034, Revision 03, proposed AD:

ESTIMATED COSTS
Cost per Cost on U.S.
Action Labor cost Parts cost product operators

Replace main heat exchanger ........................ 5 work-hours × $85 per hour = $425 ............. $7,000 $7,425 $1,373,625

Authority for This Rulemaking Regulatory Findings under the criteria of the Regulatory
Title 49 of the United States Code We determined that this proposed AD Flexibility Act.
specifies the FAA’s authority to issue would not have federalism implications List of Subjects in 14 CFR Part 39
rules on aviation safety. Subtitle I, under Executive Order 13132. This
Air transportation, Aircraft, Aviation
section 106, describes the authority of proposed AD would not have a
safety, Incorporation by reference,
the FAA Administrator. Subtitle VII: substantial direct effect on the States, on
Safety.
Aviation Programs, describes in more the relationship between the national
detail the scope of the Agency’s Government and the States, or on the The Proposed Amendment
authority. distribution of power and Accordingly, under the authority
We are issuing this rulemaking under responsibilities among the various delegated to me by the Administrator,
the authority described in Subtitle VII, levels of government. the FAA proposes to amend 14 CFR part
Part A, Subpart III, Section 44701: For the reasons discussed above, I 39 as follows:
‘‘General requirements.’’ Under that certify this proposed regulation:
section, Congress charges the FAA with (1) Is not a ‘‘significant regulatory PART 39—AIRWORTHINESS
promoting safe flight of civil aircraft in action’’ under Executive Order 12866, DIRECTIVES
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS

air commerce by prescribing regulations (2) Is not a ‘‘significant rule’’ under
for practices, methods, and procedures the DOT Regulatory Policies and ■ 1. The authority citation for part 39
the Administrator finds necessary for Procedures (44 FR 11034, February 26, continues to read as follows:
safety in air commerce. This regulation 1979), Authority: 49 U.S.C. 106(g), 40113, 44701.
is within the scope of that authority (3) Will not affect intrastate aviation
because it addresses an unsafe condition in Alaska, and § 39.13 [Amended]
that is likely to exist or develop on (4) Will not have a significant ■ 2. The FAA amends § 39.13 by adding
products identified in this rulemaking economic impact, positive or negative, the following new airworthiness
action. on a substantial number of small entities directive (AD):

VerDate Sep<11>2014 17:23 Dec 06, 2016 Jkt 241001 PO 00000 Frm 00011 Fmt 4702 Sfmt 4702 E:\FR\FM\07DEP1.SGM 07DEP1

Document Created: 2016-12-07 05:31:21
Document Modified: 2016-12-07 05:31:21

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 January 23, 2017.
Contact		John Frost, Aerospace Engineer, Engine Certification Office, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7756; fax: 781-238-7199; email: [email protected]
FR Citation		81 FR 88145
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

81 FR 88145 - Airworthiness Directives; General Electric Company Turbofan Engines

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 81, Issue 235 (December 7, 2016)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration