81_FR_41330 81 FR 41208 - Airworthiness Directives; General Electric Company Turbofan Engines

81 FR 41208 - Airworthiness Directives; General Electric Company Turbofan Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 122 (June 24, 2016)

Page Range41208-41211
FR Document2016-14474

We are adopting a new airworthiness directive (AD) for all General Electric Company (GE) GE90-76B, GE90-77B, GE90-85B, GE90-90B, and GE90-94B turbofan engines. This AD was prompted by an uncontained failure of the high-pressure compressor (HPC) stage 8-10 spool, leading to an airplane fire. This AD requires eddy current inspection (ECI) or ultrasonic inspection (USI) of the HPC stage 8-10 spool and removing from service those parts that fail inspection. We are issuing this AD to prevent failure of the HPC stage 8-10 spool, uncontained rotor release, damage to the engine, and damage to the airplane.

Federal Register, Volume 81 Issue 122 (Friday, June 24, 2016) 
[Federal Register Volume 81, Number 122 (Friday, June 24, 2016)]
[Rules and Regulations]
[Pages 41208-41211]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-14474]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-7491; Directorate Identifier 2015-NE-39-AD; 
Amendment 39-18569; AD 2016-13-05]
RIN 2120-AA64


Airworthiness Directives; General Electric Company Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for all 
General Electric Company (GE) GE90-76B, GE90-77B, GE90-85B, GE90-90B, 
and GE90-94B turbofan engines. This AD was prompted by an uncontained 
failure of the high-pressure compressor (HPC) stage 8-10 spool, leading 
to an airplane fire. This AD requires eddy current inspection (ECI) or 
ultrasonic inspection (USI) of the HPC stage 8-10 spool and removing 
from service those parts that fail inspection. We are issuing this AD 
to prevent failure of the HPC stage 8-10 spool, uncontained rotor 
release, damage to the engine, and damage to the airplane.

DATES: This AD is effective July 29, 2016.

ADDRESSES: See the FOR FURTHER INFORMATION CONTACT section.

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-2015-
7491; 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 Document 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: 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: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to all GE GE90-76B, GE90-77B, 
GE90-85B, GE90-90B, and GE90-94B turbofan engines. The NPRM published 
in the Federal Register on January 13, 2016 (81 FR 1582). The NPRM was 
prompted by an uncontained failure of the HPC stage 8-10 spool, leading 
to an airplane fire. The NPRM proposed to require ECIs or USIs of the 
HPC stage 8-10 spool and removing from service those parts that fail 
inspection. We are issuing this AD to prevent failure of the HPC stage 
8-10 spool, uncontained rotor release, damage to the engine, and damage 
to the airplane.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the NPRM (81 
FR 1582, January 13, 2016) and the FAA's response to each comment.

Support for the NPRM (81 FR 1582, January 13, 2016)

    The Air Line Pilots Association expressed support for the NPRM (81 
FR 1582, January 13, 2016).

Request To Change Applicability

    British Airways, United Airlines, and The Boeing Company commented 
that HPC stage 8-10 spool, part numbers (P/Ns) 1844M90G01 and 
1844M90G02 are not required in the Applicability paragraph of this AD. 
They noted that the associated AD 2015-27-01, (81 FR 1291, January 12, 
2016) and the precipitating event involved only HPC stage 8-10 spool, 
P/N 1694M80G04.
    We disagree. HPC stage 8-10 spool P/Ns 1844M90G01 and 1844M90G02 
are susceptible to the same failure mode as HPC stage 8-10 spool, P/N 
1694M80G04. However, we

[[Page 41209]]

acknowledge that the one-time inspection is not needed for the majority 
of HPC stage 8-10 spool P/Ns 1844M90G01 and 1844M90G02. Therefore, we 
revised paragraph (e)(1) of this AD to apply to only specific serial 
numbers (S/Ns) of P/Ns 1844M90G01 and 1844M90G02 for the one-time 
inspection.

Request To Change Compliance Time

    British Airways requested that we clarify if a repetitive on-wing 
inspection is required. They reasoned that the service information 
lists the on-wing inspection as one time only.
    We disagree. Paragraph (e)(1) of this AD mandates that specific 
parts be inspected prior to a cycle limit. This initial inspection may 
be performed on wing using USI or at shop visit using ECI. Repetitive 
inspections prior to shop visit are not mandated, however we 
acknowledge that GE has commented that they should be performed. We did 
not change this AD.

Request To Change Terminating Action

    GE requested that we remove the repetitive shop visit inspection 
from the Compliance section of this AD and instead mandate that the 
airworthiness limitations section (ALS) of the engine manual include 
the repetitive inspections. They also requested that the Summary 
section and Related Information section of this AD be revised to 
reflect this change. They reasoned that this will allow a terminating 
action for this AD.
    We disagree. At this time we do not feel that a change to the ALS 
is appropriate as root cause has not been determined. We did not change 
this AD.

Request To Change Installation Prohibition

    GE requested that we clarify that the installation prohibition does 
not apply to new parts. They stated that new parts do not need to be 
inspected prior to installation. The inspections are only applicable to 
parts that have been used in service.
    We agree. We revised paragraph (f) of this AD to specify that 
inspections are only required for parts that have been used in service.

Request To Change Service Information

    GE and British Airways requested that we revise the Related Service 
Information paragraph of this AD to remove the reference to Engine 
Manual, Chapter 72-00-31, Special Procedure 007 and add a reference to 
GE GE90 SB 72-1146. They reasoned that the Special Procedure is 
considered an additional inspection technique and the other inspection 
procedures listed provide full detection capability of defects in the 
area of concern.
    We disagree. The service information is not incorporated by 
reference in this AD and was previously included for information 
purposes only. However, to preclude any confusion on this point, we 
removed all service information from the Related Information section of 
this AD.

Request To Change Applicability

    GE requested that we reduce the applicability for the initial 
inspection. GE has determined that an older manufacturing process may 
be a contributor to part failure and that all parts manufactured using 
this process should be inspected prior to shop visit.
    We agree. We revised the applicability of the initial inspection to 
include all HPC stage 8-10 spool, P/N 1694M80G04, and specific S/Ns of 
HPC stage 8-10 spool, P/Ns 1844M90G01 and 1844M90G02, that were 
manufactured using the older process.

Request To Change Compliance Time

    GE has requested that the initial USI compliance time be reduced 
and to add repetitive inspections every 500 cycles until shop visit ECI 
for the parts manufactured using the older manufacturing process noted 
above. GE has determined that the smallest detectable flaw using USI 
with the compressor blades installed is larger than what was used in 
the prior analysis.
    We partially agree. We agree that the USI inspection is not as 
capable as what was used in the prior analysis. We also agree that a 
reduced threshold for initial inspection is appropriate. So, we reduced 
the initial inspection threshold in paragraph (e)(1) of this AD from 
10,500 cycles to 9,000 cycles and removed USI as an option for the 
inspections in paragraph (e)(2) of this AD. We disagree with including 
the 500 cycle repetitive inspections; however, repetitive inspections 
would be a consideration for additional rulemaking.

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 previously. We have determined that 
these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM (81 FR 1582, January 13, 2016) for correcting the unsafe 
condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM (81 FR 1582, January 13, 2016).
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this AD.

Interim Action

    GE is determining the root cause for the unsafe condition 
identified in this AD. Once a root cause is identified, we will 
consider additional rulemaking.

Costs of Compliance

    We estimate that this AD affects 54 engines installed on airplanes 
of U.S. registry. We also estimate that it will take about 7 hours per 
engine to comply with this AD. The average labor rate is $85 per hour. 
We estimate one part will fail inspection at a cost of $780,000. Based 
on these figures, we estimate the total cost of this AD to U.S. 
operators to be $812,130.

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 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

[[Page 41210]]

    (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):

2016-13-05 General Electric Company: Amendment 39-18569; Docket No. 
FAA-2015-7491; Directorate Identifier 2015-NE-39-AD.

(a) Effective Date

    This AD is effective July 29, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to General Electric Company (GE) GE90-76B, GE90-
77B, GE90-85B, GE90-90B, and GE90-94B turbofan engines with a high-
pressure compressor (HPC) stage 8-10 spool, part numbers (P/Ns) 
1694M80G04, 1844M90G01, or 1844M90G02, installed.

(d) Unsafe Condition

    This AD was prompted by an uncontained failure of the HPC stage 
8-10 spool. We are issuing this AD to prevent failure of the HPC 
stage 8-10 spool, uncontained rotor release, damage to the engine, 
and damage to the airplane.

(e) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) For HPC stage 8-10 spool, P/N 1694M80G04, all serial numbers 
(S/Ns), or HPC stage 8-10 spool, P/N 1844M90G01 or 1844M90G02, with 
a S/N listed in Figure 1 to paragraph (e) of this AD; perform an 
eddy current inspection (ECI) or ultrasonic inspection (USI) of the 
stage 8 aft web upper face, after reaching 8,000 cycles since new 
(CSN), but, before exceeding 9,000 CSN, or within 500 cycles in 
service after the effective date of this AD, whichever occurs later.

                                                  Figure 1 to Paragraph (e)--HPC Stage 8-10 Spool S/Ns
--------------------------------------------------------------------------------------------------------------------------------------------------------
 
--------------------------------------------------------------------------------------------------------------------------------------------------------
           Part Nos.                                                                   Serial Nos.
--------------------------------------------------------------------------------------------------------------------------------------------------------
 
1844M90G01.....................  GWN005MF                 GWNBK753                GWNBS077                GWNBS497                GWNBS724
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                 GWN005MG                 GWNBK754                GWNBS078                GWNBS499                GWNBS794
                                 GWN0087M                 GWNBK841                GWNBS079                GWNBS500                GWNBS810
                                 GWN0087N                 GWNBK842                GWNBS080                GWNBS501                GWNBS811
                                 GWN00DGK                 GWNBK843                GWNBS081                GWNBS502                GWNBS812
                                 GWN00DGL                 GWNBK844                GWNBS157                GWNBS609                GWNBS813
                                 GWNBJ992                 GWNBK952                GWNBS158                GWNBS610                GWNBS814
                                 GWNBK667                 GWNBK953                GWNBS159                GWNBS611                GWNBS910
                                 GWNBK674                 GWNBK954                GWNBS160                GWNBS612                GWNBS911
                                 GWNBK675                 GWNBK955                GWNBS266                GWNBS613                GWNBS912
                                 GWNBK743                 GWNBK956                GWNBS267                GWNBS614                GWNBS914
                                 GWNBK744                 GWNBK957                GWNBS268                GWNBS721                GWNBS915
                                 GWNBK751                 GWNBK958                GWNBS269                GWNBS722                GWNBS982
                                 GWNBK752                 GWNBK959                GWNBS270                GWNBS723                GWNBS983
--------------------------------------------------------------------------------------------------------------------------------------------------------
1844M90G02.....................  GWN00C2T                 GWN01C5N                GWN02N8D                GWN03RTM                GWN04E21
                                 GWN00C2V                 GWN01GE2                GWN02T3R                GWN03RTP                GWN04GHT
                                 GWN00G2N                 GWN01GE3                GWN02WGM                GWN040RL                GWN04GHW
                                 GWN00G2P                 GWN01GE4                GWN0311K                GWN040RM                GWN04GJ0
                                 GWN00PFP                 GWN01GE6                GWN035PP                GWN040RN                GWN04JW6
                                 GWN00PFR                 GWN01WH1                GWN038TD                GWN040RP                GWN04JW7
                                 GWN00T2N                 GWN02688                GWN039TG                GWN04202                GWN04JW8
                                 GWN00YHV                 GWN02689                GWN03G2R                GWN0435W                GWN04L7K
                                 GWN0125G                 GWN0268A                GWN03G2W                GWN04360                GWN04L7L
                                 GWN0125H                 GWN02DP2                GWN03G30                GWN04361                GWN04MT7
                                 GWN0166K                 GWN02DP3                GWN03JPC                GWN04362                GWN04MT8
                                 GWN01C5K                 GWN02F9F                GWN03JPD                GWN04ATG                GWNBS984
                                 GWN01C5L                 GWN02F9G                GWN03N8P                GWN04ATH                ......................
                                 GWN01C5M                 GWN02L9T                GWN03N8R                GWN04E20                ......................
--------------------------------------------------------------------------------------------------------------------------------------------------------

    (2) For all HPC stage 8-10 spools, P/N 1694M80G04, 1844M90G01, 
or 1844M90G02, perform an ECI of the stage 8 aft web upper face of 
the HPC stage 8-10 spool at each shop visit.
    (3) Remove from service any HPC stage 8-10 spool that fails the 
inspection required by paragraphs (e)(1) or (e)(2) of this AD, and 
replace with a spool eligible for installation.

(f) Installation Prohibition

    After the effective date of this AD, do not re-install into any 
engine, any HPC stage 8-10 spool, P/Ns 1694M80G04, 1844M90G01, or 
1844M90G02, unless the spool has passed an ECI of the stage 8 aft 
web upper face as specified in paragraph (e)(1) or (e)(2) of this 
AD.

(g) Definition

    For the purpose of this AD, an engine shop visit is the 
induction of an engine into the shop for maintenance during which 
the compressor discharge pressure seal face is exposed.

(h) Alternative Methods of Compliance (AMOCs)

    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].

(i) Related Information

    For more information about this AD, contact John Frost, 
Aerospace Engineer, Engine Certification Office, FAA, 1200 District 
Avenue, Burlington, MA 01803;

[[Page 41211]]

phone: 781-238-7756; fax: 781-238-7199; email: [email protected].

(j) Material Incorporated by Reference

    None.

    Issued in Burlington, Massachusetts, on June 15, 2016.
Colleen M. D'Alessandro,
Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-14474 Filed 6-23-16; 8:45 am]
 BILLING CODE 4910-13-P

41208 Federal Register / Vol. 81, No. 122 / Friday, June 24, 2016 / Rules and Regulations tank vent is continuously exposed to (b) New production airplanes. No except Federal holidays. The AD docket flame. certificate holder may operate an contains this AD, the regulatory * * * * * airplane for which the State of evaluation, any comments received, and Manufacture issued the original other information. The address for the PART 121—OPERATING certificate of airworthiness or export Docket Office (phone: 800–647–5527) is REQUIREMENTS: DOMESTIC, FLAG, airworthiness approval after August 23, Document Management Facility, U.S. AND SUPPLEMENTAL OPERATIONS 2018 unless means, approved by the Department of Transportation, Docket Administrator, to prevent fuel tank Operations, M–30, West Building ■ 3. The authority citation for part 121 explosions caused by propagation of Ground Floor, Room W12–140, 1200 continues to read as follows: flames from outside the fuel tank vents New Jersey Avenue SE., Washington, Authority: 49 U.S.C. 106(f), 106(g), 40103, into the fuel tank vapor spaces are DC 20590. 40113, 40119, 41706, 42301 preceding note installed and operational. FOR FURTHER INFORMATION CONTACT: John added by Pub. L. 112–95, sec. 412, 126 Stat. Frost, Aerospace Engineer, Engine Issued under authority provided by 49 89, 44101, 44701–44702, 44705, 44709– Certification Office, FAA, 1200 District U.S.C. 106(f) and 44701(a) in Washington, 44711, 44713, 44716–44717, 44722, 44729, Avenue, Burlington, MA 01803; phone: DC, on June 7, 2016. 44732; 46105; Pub. L. 111–216, 124 Stat. 2348 (49 U.S.C. 44701 note); Pub. L. 112–95, Michael P. Huerta, 781–238–7756; fax: 781–238–7199; 126 Stat 62 (49 U.S.C. 44732 note). Administrator. email: john.frost@faa.gov. [FR Doc. 2016–14454 Filed 6–23–16; 8:45 am] SUPPLEMENTARY INFORMATION: ■ 4. Add § 121.1119 to subpart AA to read as follows: BILLING CODE 4910–13–P Discussion § 121.1119 Fuel tank vent explosion We issued a notice of proposed protection. rulemaking (NPRM) to amend 14 CFR DEPARTMENT OF TRANSPORTATION (a) Applicability. This section applies part 39 by adding an AD that would to transport category, turbine-powered Federal Aviation Administration apply to all GE GE90–76B, GE90–77B, airplanes with a type certificate issued GE90–85B, GE90–90B, and GE90–94B after January 1, 1958, that have: 14 CFR Part 39 turbofan engines. The NPRM published (1) A maximum type-certificated in the Federal Register on January 13, [Docket No. FAA–2015–7491; Directorate 2016 (81 FR 1582). The NPRM was passenger capacity of 30 or more; or Identifier 2015–NE–39–AD; Amendment 39– (2) A maximum payload capacity of prompted by an uncontained failure of 18569; AD 2016–13–05] 7,500 pounds or more. the HPC stage 8–10 spool, leading to an (b) New production airplanes. No RIN 2120–AA64 airplane fire. The NPRM proposed to certificate holder may operate an require ECIs or USIs of the HPC stage 8– airplane for which the State of Airworthiness Directives; General 10 spool and removing from service Manufacture issued the original Electric Company Turbofan Engines those parts that fail inspection. We are certificate of airworthiness or export AGENCY: Federal Aviation issuing this AD to prevent failure of the airworthiness approval after August 23, Administration (FAA), DOT. HPC stage 8–10 spool, uncontained 2018 unless means, approved by the ACTION: Final rule. rotor release, damage to the engine, and Administrator, to prevent fuel tank damage to the airplane. explosions caused by propagation of SUMMARY: We are adopting a new Comments flames from outside the fuel tank vents airworthiness directive (AD) for all into the fuel tank vapor spaces are General Electric Company (GE) GE90– We gave the public the opportunity to installed and operational. 76B, GE90–77B, GE90–85B, GE90–90B, participate in developing this AD. The and GE90–94B turbofan engines. This following presents the comments PART 129—OPERATIONS: FOREIGN AD was prompted by an uncontained received on the NPRM (81 FR 1582, AIR CARRIERS AND FOREIGN failure of the high-pressure compressor January 13, 2016) and the FAA’s OPERATORS OF U.S.-REGISTERED (HPC) stage 8–10 spool, leading to an response to each comment. AIRCRAFT ENGAGED IN COMMON airplane fire. This AD requires eddy Support for the NPRM (81 FR 1582, CARRIAGE current inspection (ECI) or ultrasonic January 13, 2016) inspection (USI) of the HPC stage 8–10 ■ 5. The authority citation for part 129 spool and removing from service those The Air Line Pilots Association continues to read as follows: parts that fail inspection. We are issuing expressed support for the NPRM (81 FR Authority: 49 U.S.C. 1372, 40113, 40119, this AD to prevent failure of the HPC 1582, January 13, 2016). 44101, 44701–44702, 44705, 44709–44711, stage 8–10 spool, uncontained rotor Request To Change Applicability 44713, 44716–44717, 44722, 44901–44904, release, damage to the engine, and 44906, 44912, 46105, Pub. L. 107–71 sec. British Airways, United Airlines, and damage to the airplane. The Boeing Company commented that 104. DATES: This AD is effective July 29, HPC stage 8–10 spool, part numbers (P/ ■ 6. Add § 129.119 to subpart B to read 2016. Ns) 1844M90G01 and 1844M90G02 are as follows: ADDRESSES: See the FOR FURTHER not required in the Applicability § 129.119 Fuel tank vent explosion INFORMATION CONTACT section. paragraph of this AD. They noted that protection. the associated AD 2015–27–01, (81 FR Examining the AD Docket 1291, January 12, 2016) and the (a) Applicability. This section applies sradovich on DSK3GDR082PROD with RULES to transport category, turbine-powered You may examine the AD docket on precipitating event involved only HPC airplanes with a type certificate issued the Internet at http:// stage 8–10 spool, P/N 1694M80G04. after January 1, 1958, that have: www.regulations.gov by searching for We disagree. HPC stage 8–10 spool P/ (1) A maximum type-certificated and locating Docket No. FAA–2015– Ns 1844M90G01 and 1844M90G02 are passenger capacity of 30 or more; or 7491; or in person at the Docket susceptible to the same failure mode as (2) A maximum payload capacity of Management Facility between 9 a.m. HPC stage 8–10 spool, P/N 7,500 pounds or more. and 5 p.m., Monday through Friday, 1694M80G04. However, we VerDate Sep<11>2014 16:19 Jun 23, 2016 Jkt 238001 PO 00000 Frm 00038 Fmt 4700 Sfmt 4700 E:\FR\FM\24JNR1.SGM 24JNR1

Federal Register / Vol. 81, No. 122 / Friday, June 24, 2016 / Rules and Regulations 41209 acknowledge that the one-time inspection procedures listed provide proposed in the NPRM (81 FR 1582, inspection is not needed for the majority full detection capability of defects in the January 13, 2016). of HPC stage 8–10 spool P/Ns area of concern. We also determined that these 1844M90G01 and 1844M90G02. We disagree. The service information changes will not increase the economic Therefore, we revised paragraph (e)(1) of is not incorporated by reference in this burden on any operator or increase the this AD to apply to only specific serial AD and was previously included for scope of this AD. numbers (S/Ns) of P/Ns 1844M90G01 information purposes only. However, to Interim Action and 1844M90G02 for the one-time preclude any confusion on this point, inspection. we removed all service information GE is determining the root cause for from the Related Information section of the unsafe condition identified in this Request To Change Compliance Time this AD. AD. Once a root cause is identified, we British Airways requested that we will consider additional rulemaking. clarify if a repetitive on-wing inspection Request To Change Applicability GE requested that we reduce the Costs of Compliance is required. They reasoned that the service information lists the on-wing applicability for the initial inspection. We estimate that this AD affects 54 inspection as one time only. GE has determined that an older engines installed on airplanes of U.S. We disagree. Paragraph (e)(1) of this manufacturing process may be a registry. We also estimate that it will AD mandates that specific parts be contributor to part failure and that all take about 7 hours per engine to comply inspected prior to a cycle limit. This parts manufactured using this process with this AD. The average labor rate is initial inspection may be performed on should be inspected prior to shop visit. $85 per hour. We estimate one part will wing using USI or at shop visit using We agree. We revised the applicability fail inspection at a cost of $780,000. ECI. Repetitive inspections prior to shop of the initial inspection to include all Based on these figures, we estimate the visit are not mandated, however we HPC stage 8–10 spool, P/N total cost of this AD to U.S. operators to acknowledge that GE has commented 1694M80G04, and specific S/Ns of HPC be $812,130. that they should be performed. We did stage 8–10 spool, P/Ns 1844M90G01 Authority for This Rulemaking not change this AD. and 1844M90G02, that were manufactured using the older process. Title 49 of the United States Code Request To Change Terminating Action specifies the FAA’s authority to issue GE requested that we remove the Request To Change Compliance Time rules on aviation safety. Subtitle I, repetitive shop visit inspection from the GE has requested that the initial USI section 106, describes the authority of Compliance section of this AD and compliance time be reduced and to add the FAA Administrator. Subtitle VII: instead mandate that the airworthiness repetitive inspections every 500 cycles Aviation Programs, describes in more limitations section (ALS) of the engine until shop visit ECI for the parts detail the scope of the Agency’s manual include the repetitive manufactured using the older authority. inspections. They also requested that manufacturing process noted above. GE We are issuing this rulemaking under the Summary section and Related has determined that the smallest the authority described in Subtitle VII, Information section of this AD be detectable flaw using USI with the Part A, Subpart III, Section 44701: revised to reflect this change. They compressor blades installed is larger ‘‘General requirements.’’ Under that reasoned that this will allow a than what was used in the prior section, Congress charges the FAA with terminating action for this AD. analysis. promoting safe flight of civil aircraft in We disagree. At this time we do not We partially agree. We agree that the air commerce by prescribing regulations feel that a change to the ALS is USI inspection is not as capable as what for practices, methods, and procedures appropriate as root cause has not been was used in the prior analysis. We also the Administrator finds necessary for determined. We did not change this AD. agree that a reduced threshold for initial safety in air commerce. This regulation inspection is appropriate. So, we is within the scope of that authority Request To Change Installation reduced the initial inspection threshold because it addresses an unsafe condition Prohibition in paragraph (e)(1) of this AD from that is likely to exist or develop on GE requested that we clarify that the 10,500 cycles to 9,000 cycles and products identified in this rulemaking installation prohibition does not apply removed USI as an option for the action. to new parts. They stated that new parts inspections in paragraph (e)(2) of this do not need to be inspected prior to Regulatory Findings AD. We disagree with including the 500 installation. The inspections are only cycle repetitive inspections; however, This AD will not have federalism applicable to parts that have been used repetitive inspections would be a implications under Executive Order in service. consideration for additional rulemaking. 13132. This AD will not have a We agree. We revised paragraph (f) of substantial direct effect on the States, on this AD to specify that inspections are Conclusion the relationship between the national only required for parts that have been We reviewed the relevant data, government and the States, or on the used in service. considered the comments received, and distribution of power and determined that air safety and the responsibilities among the various Request To Change Service Information public interest require adopting this AD levels of government. GE and British Airways requested that with the changes described previously. For the reasons discussed above, I we revise the Related Service We have determined that these minor certify that this AD: sradovich on DSK3GDR082PROD with RULES Information paragraph of this AD to changes: (1) Is not a ‘‘significant regulatory remove the reference to Engine Manual, • Are consistent with the intent that action’’ under Executive Order 12866, Chapter 72–00–31, Special Procedure was proposed in the NPRM (81 FR 1582, (2) Is not a ‘‘significant rule’’ under 007 and add a reference to GE GE90 SB January 13, 2016) for correcting the DOT Regulatory Policies and Procedures 72–1146. They reasoned that the Special unsafe condition; and (44 FR 11034, February 26, 1979), Procedure is considered an additional • Do not add any additional burden (3) Will not affect intrastate aviation inspection technique and the other upon the public than was already in Alaska, and VerDate Sep<11>2014 16:19 Jun 23, 2016 Jkt 238001 PO 00000 Frm 00039 Fmt 4700 Sfmt 4700 E:\FR\FM\24JNR1.SGM 24JNR1

41210 Federal Register / Vol. 81, No. 122 / Friday, June 24, 2016 / Rules and Regulations (4) Will not have a significant § 39.13 [Amended] (d) Unsafe Condition economic impact, positive or negative, This AD was prompted by an uncontained on a substantial number of small entities ■ 2. The FAA amends § 39.13 by adding failure of the HPC stage 8–10 spool. We are under the criteria of the Regulatory the following new airworthiness issuing this AD to prevent failure of the HPC Flexibility Act. directive (AD): stage 8–10 spool, uncontained rotor release, 2016–13–05 General Electric Company: damage to the engine, and damage to the List of Subjects in 14 CFR Part 39 Amendment 39–18569; Docket No. airplane. Air transportation, Aircraft, Aviation FAA–2015–7491; Directorate Identifier (e) Compliance safety, Incorporation by reference, 2015–NE–39–AD. Safety. Comply with this AD within the (a) Effective Date compliance times specified, unless already Adoption of the Amendment This AD is effective July 29, 2016. done. Accordingly, under the authority (1) For HPC stage 8–10 spool, P/N (b) Affected ADs 1694M80G04, all serial numbers (S/Ns), or delegated to me by the Administrator, None. HPC stage 8–10 spool, P/N 1844M90G01 or the FAA amends 14 CFR part 39 as 1844M90G02, with a S/N listed in Figure 1 follows: (c) Applicability to paragraph (e) of this AD; perform an eddy This AD applies to General Electric current inspection (ECI) or ultrasonic PART 39—AIRWORTHINESS Company (GE) GE90–76B, GE90–77B, GE90– inspection (USI) of the stage 8 aft web upper DIRECTIVES 85B, GE90–90B, and GE90–94B turbofan face, after reaching 8,000 cycles since new engines with a high-pressure compressor (CSN), but, before exceeding 9,000 CSN, or ■ 1. The authority citation for part 39 within 500 cycles in service after the (HPC) stage 8–10 spool, part numbers (P/Ns) continues to read as follows: 1694M80G04, 1844M90G01, or 1844M90G02, effective date of this AD, whichever occurs Authority: 49 U.S.C. 106(g), 40113, 44701. installed. later. FIGURE 1 TO PARAGRAPH (e)—HPC STAGE 8–10 SPOOL S/NS Part Nos. Serial Nos. 1844M90G01 ........................................................ GWN005MF GWNBK753 GWNBS077 GWNBS497 GWNBS724 GWN005MG GWNBK754 GWNBS078 GWNBS499 GWNBS794 GWN0087M GWNBK841 GWNBS079 GWNBS500 GWNBS810 GWN0087N GWNBK842 GWNBS080 GWNBS501 GWNBS811 GWN00DGK GWNBK843 GWNBS081 GWNBS502 GWNBS812 GWN00DGL GWNBK844 GWNBS157 GWNBS609 GWNBS813 GWNBJ992 GWNBK952 GWNBS158 GWNBS610 GWNBS814 GWNBK667 GWNBK953 GWNBS159 GWNBS611 GWNBS910 GWNBK674 GWNBK954 GWNBS160 GWNBS612 GWNBS911 GWNBK675 GWNBK955 GWNBS266 GWNBS613 GWNBS912 GWNBK743 GWNBK956 GWNBS267 GWNBS614 GWNBS914 GWNBK744 GWNBK957 GWNBS268 GWNBS721 GWNBS915 GWNBK751 GWNBK958 GWNBS269 GWNBS722 GWNBS982 GWNBK752 GWNBK959 GWNBS270 GWNBS723 GWNBS983 1844M90G02 ........................................................ GWN00C2T GWN01C5N GWN02N8D GWN03RTM GWN04E21 GWN00C2V GWN01GE2 GWN02T3R GWN03RTP GWN04GHT GWN00G2N GWN01GE3 GWN02WGM GWN040RL GWN04GHW GWN00G2P GWN01GE4 GWN0311K GWN040RM GWN04GJ0 GWN00PFP GWN01GE6 GWN035PP GWN040RN GWN04JW6 GWN00PFR GWN01WH1 GWN038TD GWN040RP GWN04JW7 GWN00T2N GWN02688 GWN039TG GWN04202 GWN04JW8 GWN00YHV GWN02689 GWN03G2R GWN0435W GWN04L7K GWN0125G GWN0268A GWN03G2W GWN04360 GWN04L7L GWN0125H GWN02DP2 GWN03G30 GWN04361 GWN04MT7 GWN0166K GWN02DP3 GWN03JPC GWN04362 GWN04MT8 GWN01C5K GWN02F9F GWN03JPD GWN04ATG GWNBS984 GWN01C5L GWN02F9G GWN03N8P GWN04ATH GWN01C5M GWN02L9T GWN03N8R GWN04E20 (2) For all HPC stage 8–10 spools, P/N or 1844M90G02, unless the spool has passed (h) Alternative Methods of Compliance 1694M80G04, 1844M90G01, or 1844M90G02, an ECI of the stage 8 aft web upper face as (AMOCs) perform an ECI of the stage 8 aft web upper specified in paragraph (e)(1) or (e)(2) of this The Manager, Engine Certification Office, face of the HPC stage 8–10 spool at each shop AD. FAA, may approve AMOCs for this AD. Use visit. (3) Remove from service any HPC stage 8– (g) Definition the procedures found in 14 CFR 39.19 to sradovich on DSK3GDR082PROD with RULES 10 spool that fails the inspection required by make your request. You may email your For the purpose of this AD, an engine shop request to: ANE-AD-AMOC@faa.gov. paragraphs (e)(1) or (e)(2) of this AD, and replace with a spool eligible for installation. visit is the induction of an engine into the shop for maintenance during which the (i) Related Information (f) Installation Prohibition compressor discharge pressure seal face is For more information about this AD, After the effective date of this AD, do not exposed. contact John Frost, Aerospace Engineer, re-install into any engine, any HPC stage 8– Engine Certification Office, FAA, 1200 10 spool, P/Ns 1694M80G04, 1844M90G01, District Avenue, Burlington, MA 01803; VerDate Sep<11>2014 18:10 Jun 23, 2016 Jkt 238001 PO 00000 Frm 00040 Fmt 4700 Sfmt 4700 E:\FR\FM\24JNR1.SGM 24JNR1

Federal Register / Vol. 81, No. 122 / Friday, June 24, 2016 / Rules and Regulations 41211 phone: 781–238–7756; fax: 781–238–7199; Order 7400.9Z at NARA, call 202–741– rulemaking effort by submitting written email: john.frost@faa.gov. 6030, or go to http://www.archives.gov/ comments on the proposal to the FAA. (j) Material Incorporated by Reference federal_register/code_of_federal- No comments were received. None. regulations/ibr_locations.html. Class D and E airspace designations FAA Order 7400.9, Airspace are published in paragraphs 5000, 6002, Issued in Burlington, Massachusetts, on Designations and Reporting Points, is 6004, and 6005, respectively, of FAA June 15, 2016. Order 7400.9Z dated August 6, 2015, published yearly and effective on Colleen M. D’Alessandro, and effective September 15, 2015, which September 15. Manager, Engine & Propeller Directorate, is incorporated by reference in 14 CFR Aircraft Certification Service. FOR FURTHER INFORMATION CONTACT: John Fornito, Operations Support Group, part 71.1. The Class D and E airspace [FR Doc. 2016–14474 Filed 6–23–16; 8:45 am] designations listed in this document Eastern Service Center, Federal Aviation BILLING CODE 4910–13–P Administration, P.O. Box 20636, will be published subsequently in the Atlanta, Georgia 30320; telephone (404) Order. DEPARTMENT OF TRANSPORTATION 305–6364. Availability and Summary of SUPPLEMENTARY INFORMATION: Documents for Incorporation by Federal Aviation Administration Reference Authority for This Rulemaking This document amends FAA Order 14 CFR Part 71 The FAA’s authority to issue rules 7400.9Z, Airspace Designations and regarding aviation safety is found in Reporting Points, dated August 6, 2015, [Docket No. FAA–2015–8304; Airspace Docket No. 15–AEA–15] Title 49 of the United States Code. and effective September 15, 2015. FAA Subtitle I, Section 106 describes the Order 7400.9Z is publicly available as Amendment of Class D and Class E authority of the FAA Administrator. listed in the ADDRESSES section of this Airspace; Charlottesville, VA Subtitle VII, Aviation Programs, document. FAA Order 7400.9Z lists describes in more detail the scope of the Class A, B, C, D, and E airspace areas, AGENCY: Federal Aviation agency’s authority. This rulemaking is Administration (FAA), DOT. air traffic service routes, and reporting promulgated under the authority points. ACTION: Final rule. described in Subtitle VII, Part, A, Subpart I, Section 40103. Under that The Rule SUMMARY: This action amends Class E section, the FAA is charged with This amendment to Title 14, Code of Airspace Designated as an Extension to prescribing regulations to assign the use Federal Regulations (14 CFR) part 71 a Class D at Charlottesville-Albemarle of airspace necessary to ensure the amends Class D airspace, Class E Airport, Charlottesville, VA, as the safety of aircraft and the efficient use of Surface Area Airspace, Class E Airspace Azalea Park Non-Directional Radio airspace. This regulation is within the Designated as an Extension to a Class D, Beacon (NDB) has been scope of that authority as it amends and Class E airspace extending upward decommissioned requiring airspace Class D and Class E airspace at from 700 feet above the surface at reconfiguration at the airport. Also, the Charlottesville-Albemarle Airport, Charlottesville-Albemarle Airport, Notice to Airmen (NOTAM) part time Charlottesville, VA. Charlottesville, VA. The Azalea Park status is removed from this airspace. This action also updates the geographic History NDB has been decommissioned coordinates of the above airport and the requiring airspace reconfiguration at the On March 28, 2016, the FAA airport. This action also updates the University of Virginia Medical Center published in the Federal Register a Heliport in Class D and E airspace listed geographic coordinates of the airport notice of proposed rulemaking (NPRM) and University of Virginia Medical in this final rule. This action enhances to amend Class D airspace, Class E the safety and management of Center Heliport, and eliminates the Surface Area Airspace, Class E Airspace NOTAM information that reads, ‘‘This Instrument Flight Rules (IFR) operations Designated as an Extension to a Class D, in the area. Class E airspace area is effective during and Class E airspace extending upward the specific dates and time established DATES: Effective 0901 UTC, September from 700 feet above the surface at in advance by Notice to Airmen. The 15, 2016. The Director of the Federal Charlottesville-Albemarle Airport, effective date and time will thereafter be Register approves this incorporation by Charlottesville, VA (81 FR 17118). The continuously published in the Airport/ reference action under Title 1, Code of Azalea Park NDB has been Facility Directory’’ from the regulatory Federal Regulations, part 51, subject to decommissioned requiring airspace text of the Class E airspace designated the annual revision of FAA Order reconfiguration at the airport. This as an extension to Class D at 7400.9 and publication of conforming action also to updates the geographic Charlottesville-Albemarle Airport, amendments. coordinates of the airport and Charlottesville, VA. ADDRESSES: FAA Order 7400.9Z, University of Virginia Medical Center Airspace Designations and Reporting Heliport, and eliminates the NOTAM Regulatory Notices and Analyses Points, and subsequent amendments can information that reads, ‘‘This Class E The FAA has determined that this be viewed online at http://www.faa.gov/ airspace area is effective during the regulation only involves an established air_traffic/publications/. For further specific dates and time established in body of technical regulations for which information, you can contact the advance by Notice to Airmen. The frequent and routine amendments are Airspace Policy Group, Federal Aviation effective date and time will thereafter be necessary to keep them operationally sradovich on DSK3GDR082PROD with RULES Administration, 800 Independence continuously published in the Airport/ current. It, therefore: (1) Is not a Avenue SW., Washington, DC, 20591; Facility Directory’’ from the regulatory ‘‘significant regulatory action’’ under telephone: 202–267–8783. The Order is text of the Class E airspace designated Executive Order 12866; (2) is not a also available for inspection at the as an extension to Class D at ‘‘significant rule’’ under DOT National Archives and Records Charlottesville-Albemarle Airport, Regulatory Policies and Procedures (44 Administration (NARA). For Charlottesville, VA. Interested parties FR 11034; February 26, 1979); and (3) information on the availability of FAA were invited to participate in this does not warrant preparation of a VerDate Sep<11>2014 16:19 Jun 23, 2016 Jkt 238001 PO 00000 Frm 00041 Fmt 4700 Sfmt 4700 E:\FR\FM\24JNR1.SGM 24JNR1


Document Created: 2016-06-24 00:53:06
Document Modified: 2016-06-24 00:53:06
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis AD is effective July 29, 2016.
ContactJohn 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 Citation81 FR 41208 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety
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