81 FR 21286 - Airworthiness Directives; General Electric Company Turbofan Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 81, Issue 69 (April 11, 2016)
Federal Aviation Administration
Federal Register Volume 81, Issue 69 (April 11, 2016)
| Page Range | 21286-21288 | |
| FR Document | 2016-08111 |
[Federal Register Volume 81, Number 69 (Monday, April 11, 2016)] [Proposed Rules] [Pages 21286-21288] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2016-08111] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2016-5307; Directorate Identifier 2016-NE-08-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 all General Electric Company (GE) GE90-76B, GE90-77B, GE90-85B, GE90-90B, and GE90-94B turbofan engines with high-pressure compressor (HPC) stage 8-10 spool, part numbers (P/Ns) 1694M80G04, 1844M90G01, or 1844M90G02, installed. This proposed AD was prompted by reports of cracks found on the seal teeth of the HPC stage 8-10 spool. This proposed AD would require eddy current inspections (ECIs) or fluorescent penetrant inspections (FPIs) of the HPC stage 8-10 spool seal teeth and removing from service those parts that fail inspection. We are proposing 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: We must receive comments on this proposed AD by June 10, 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 proposed AD, contact General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215, phone: 513-552-3272; email: [email protected]. You may [[Page 21287]] view this 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- 5307; 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: 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-2016-5307; Directorate Identifier 2016-NE-08-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 received reports of multiple cracks found on the seal teeth of HPC stage 8-10 spools during shop visits. The cracks initiated because of degraded surface properties caused by an alloy depletion zone (ADZ). The ADZ developed over time due to higher than predicted temperatures and reaction with the seal teeth bond coat. GE is developing a modification to address the unsafe condition. This condition, if not corrected, could result in failure of the HPC stage 8-10 spool, uncontained rotor release, damage to the engine, and damage to the airplane. Related Service Information We reviewed GE Service Bulletins SB 72-1141, Revision 0, dated December 2, 2015 and SB 72-1142, Revision 0, dated November 30, 2015. The service information describes procedures for inspecting the HPC stage 8-10 spool seal teeth. FAA's Determination We are proposing this NPRM 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 NPRM would require accomplishing an ECI or FPI of the seal teeth of the HPC stage 8-10 spool and removing from service those parts that fail inspection. Costs of Compliance We estimate that this proposed AD affects 54 engines installed on airplanes of U.S. registry. We also estimate that it will take about 1 hour per engine to comply with this AD. The average labor rate is $85 per hour. We estimate 14 parts will fail inspection at a pro-rated cost of $400,000 per part. Based on these figures, we estimate the total cost of the AD to U.S. operators to be $5,604,590. 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 to the extent that it justifies making a regulatory distinction, 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): General Electric Company: Docket No. FAA-2016-5307; Directorate Identifier 2016-NE-08-AD. (a) Comments Due Date We must receive comments by June 10, 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 reports of cracks found on the seal teeth of the [[Page 21288]] 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) Perform an eddy current inspection (ECI) or fluorescent penetrant inspection (FPI) of the seal teeth of the HPC stage 8-10 spool as follows: (i) For HPC stage 8-10 spools with fewer than 11,000 cycles since new (CSN) on the effective day of this AD, inspect at the next shop visit after reaching 6,000 CSN, not to exceed 12,500 CSN. (ii) For HPC stage 8-10 spools with 11,000 CSN or more on the effective day of this AD, inspect within the next 1,500 cycles in service. (iii) Thereafter, inspect the seal teeth of the HPC stage 8-10 spool at each shop visit. (2) Remove from service any HPC stage 8-10 spool that fails the ECI or FPI required by paragraph (e)(1) of this AD and replace with a part eligible for installation. (f) 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. (g) 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]. (h) 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) GE Service Bulletins SB 72-1141, Revision 0, dated December 2, 2015 and SB 72-1142, Revision 0, dated November 30, 2015 can be obtained from GE, using the contact information in paragraph (h)(3) of this AD. (3) For service information identified in this proposed AD, contact General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215, phone: 513-552-3272; email: [email protected]. (4) You may view this 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 April 5, 2016. Colleen M. D'Alessandro, Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2016-08111 Filed 4-8-16; 8:45 am] BILLING CODE 4910-13-P
![21286 Federal Register / Vol. 81, No. 69 / Monday, April 11, 2016 / Proposed Rules
§ 39.13 [Amended] 1040–00 installed, certificated in any (e) Required Actions
■ 2. The FAA amends § 39.13 by adding category. (1) Within the initial inspection times
the following new airworthiness (b) Unsafe Condition shown in Table 1 to paragraph (e) of this AD
directive (AD): This AD defines the unsafe condition as a or the next time maintenance of the
Airbus Helicopters: Docket No. FAA–2015– crack in a bi-directional cross-bar, which helicopter involves removing the main
3929; Directorate Identifier 2015–SW– could result in failure of a cross-bar and loss gearbox, whichever comes first; and
031–AD. of control of the helicopter. thereafter at intervals not to exceed the
(c) Comments Due Date compliance times shown in Table 1 to
(a) Applicability
paragraph (e) of this AD, inspect each cross-
This AD applies to Airbus Helicopters We must receive comments by June 10, bar for a crack. For purposes of this AD, a
Model EC130B4, EC130T2, AS350B, 2016
torque cycle is defined as one landing with
AS350B1, AS350B2, AS350B3, AS350BA,
AS350C, AS350D, AS350D1, AS355E, (d) Compliance or without stopping the rotor or one external
AS355F, AS355F1, AS355F2, AS355N, and You are responsible for performing each load-carrying operation; an external load-
AS355NP helicopters with a bi-directional action required by this AD within the carrying operation occurs each time a
suspension cross-bar (cross-bar) part number specified compliance time unless it has helicopter picks up an external load and
(P/N) 350A38–1040–20 or P/N 350A38– already been accomplished prior to that time. drops it off.
TABLE 1 TO PARAGRAPH (e)
Helicopter model Initial and recurrent inspection interval
AS350B, AS350BA, AS350B1, AS350B2, AS350C, AS350D, AS350D1 4,500 hours time-in-service (TIS) or 60,000 torque cycles, whichever
occurs first.
AS350B3, AS355E, AS355F, AS355F1, AS355F2, AS355N, or AS355 3,300 hours TIS or 60,000 torque cycles, whichever occurs first.
NP.
EC130B4.
EC130T2 ................................................................................................... 3,300 hours TIS or 40,000 torque cycles, whichever occurs first.
(2) If there is a crack, before further flight, (2) The subject of this AD is addressed in 8–10 spool, part numbers (P/Ns)
replace the cross-bar. European Aviation Safety Agency (EASA) AD 1694M80G04, 1844M90G01, or
No. 2015–0094, dated May 29, 2015. You 1844M90G02, installed. This proposed
(f) Special Flight Permit may view the EASA AD on the Internet at AD was prompted by reports of cracks
Special flight permits are prohibited. http://www.regulations.gov in the AD Docket.
found on the seal teeth of the HPC stage
(g) Alternative Methods of Compliance (i) Subject 8–10 spool. This proposed AD would
(AMOCs) Joint Aircraft Service Component (JASC) require eddy current inspections (ECIs)
(1) The Manager, Safety Management Code: 6300, Main Rotor Drive. or fluorescent penetrant inspections
Group, FAA, may approve AMOCs for this Issued in Fort Worth, Texas, on March 31, (FPIs) of the HPC stage 8–10 spool seal
AD. Send your proposal to: Robert Grant, 2016. teeth and removing from service those
Aviation Safety Engineer, Safety Management parts that fail inspection. We are
James A. Grigg,
Group, FAA, 10101 Hillwood Pkwy., Fort proposing this AD to prevent failure of
Worth, TX 76177; telephone (817) 222–5110; Acting Manager, Rotorcraft Directorate,
Aircraft Certification Service. the HPC stage 8–10 spool, uncontained
email 9-ASW-FTW-AMOC-Requests@faa.gov. rotor release, damage to the engine, and
(2) For operations conducted under a 14 [FR Doc. 2016–07986 Filed 4–8–16; 8:45 am]
damage to the airplane.
CFR part 119 operating certificate or under BILLING CODE 4910–13–P
14 CFR part 91, subpart K, we suggest that DATES: We must receive comments on
you notify your principal inspector, or this proposed AD by June 10, 2016.
lacking a principal inspector, the manager of DEPARTMENT OF TRANSPORTATION ADDRESSES: You may send comments,
the local flight standards district office or using the procedures found in 14 CFR
certificate holding district office before Federal Aviation Administration 11.43 and 11.45, by any of the following
operating any aircraft complying with this methods:
AD through an AMOC. 14 CFR Part 39 • Federal eRulemaking Portal: Go to
(h) Additional Information [Docket No. FAA–2016–5307; Directorate http://www.regulations.gov. Follow the
(1) Airbus Helicopters Alert Service Identifier 2016–NE–08–AD] instructions for submitting comments.
Bulletin No. EC130–05A021, No. EC130– • Fax: 202–493–2251.
05A022, No. AS350–05.00.84, and No.
RIN 2120–AA64 • Mail: U.S. Department of
AS355–05.00.73, all Revision 0 and all dated Transportation, Docket Operations, M–
Airworthiness Directives; General
May 21, 2015, which are not incorporated by 30, West Building Ground Floor, Room
reference, contain additional information
Electric Company Turbofan Engines
W12–140, 1200 New Jersey Avenue SE.,
about the subject of this proposed rule. For AGENCY: Federal Aviation Washington, DC 20590.
service information identified in this Administration (FAA), DOT. • Hand Delivery: Deliver to Mail
proposed rule, contact Airbus Helicopters, address above between 9 a.m. and 5
jstallworth on DSK7TPTVN1PROD with PROPOSALS
2701 N. Forum Drive, Grand Prairie, TX ACTION: Notice of proposed rulemaking
(NPRM). p.m., Monday through Friday, except
75052; telephone (972) 641–0000 or (800)
Federal holidays.
232–0323; fax (972) 641–3775; or at http://
www.airbushelicopters.com/techpub. You
SUMMARY: We propose to adopt a new For service information identified in
may review the referenced service airworthiness directive (AD) for all this proposed AD, contact General
information at the FAA, Office of the General Electric Company (GE) GE90– Electric Company, GE-Aviation, Room
Regional Counsel, Southwest Region, 10101 76B, GE90–77B, GE90–85B, GE90–90B, 285, 1 Neumann Way, Cincinnati, OH
Hillwood Pkwy., Room 6N–321, Fort Worth, and GE90–94B turbofan engines with 45215, phone: 513–552–3272; email:
TX 76177. high-pressure compressor (HPC) stage aviation.fleetsupport@ge.com. You may
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![Federal Register / Vol. 81, No. 69 / Monday, April 11, 2016 / Proposed Rules 21287
view this service information at the rotor release, damage to the engine, and proposed AD would not have a
FAA, Engine & Propeller Directorate, damage to the airplane. substantial direct effect on the States, on
1200 District Avenue, Burlington, MA. the relationship between the national
Related Service Information
For information on the availability of Government and the States, or on the
this material at the FAA, call 781–238– We reviewed GE Service Bulletins SB distribution of power and
7125. 72–1141, Revision 0, dated December 2, responsibilities among the various
2015 and SB 72–1142, Revision 0, dated levels of government.
Examining the AD Docket November 30, 2015. The service For the reasons discussed above, I
You may examine the AD docket on information describes procedures for certify this proposed regulation:
the Internet at http:// inspecting the HPC stage 8–10 spool (1) Is not a ‘‘significant regulatory
www.regulations.gov by searching for seal teeth. action’’ under Executive Order 12866,
and locating Docket No. FAA–2016– (2) Is not a ‘‘significant rule’’ under
5307; or in person at the Docket FAA’s Determination the DOT Regulatory Policies and
Management Facility between 9 a.m. We are proposing this NPRM because Procedures (44 FR 11034, February 26,
and 5 p.m., Monday through Friday, we evaluated all the relevant 1979),
except Federal holidays. The AD docket information and determined the unsafe (3) Will not affect intrastate aviation
contains this proposed AD, the condition described previously is likely in Alaska to the extent that it justifies
regulatory evaluation, any comments to exist or develop in other products of making a regulatory distinction, and
received, and other information. The the same type design. (4) Will not have a significant
street address for the Docket Office economic impact, positive or negative,
(phone: 800–647–5527) is in the Proposed AD Requirements on a substantial number of small entities
ADDRESSES section. Comments will be This NPRM would require under the criteria of the Regulatory
available in the AD docket shortly after accomplishing an ECI or FPI of the seal Flexibility Act.
receipt. teeth of the HPC stage 8–10 spool and
List of Subjects in 14 CFR Part 39
FOR FURTHER INFORMATION CONTACT: John removing from service those parts that
Frost, Aerospace Engineer, Engine fail inspection. Air transportation, Aircraft, Aviation
Certification Office, FAA, 1200 District safety, Incorporation by reference,
Costs of Compliance Safety.
Avenue, Burlington, MA 01803; phone:
781–238–7756; fax: 781–238–7199; We estimate that this proposed AD The Proposed Amendment
email: john.frost@faa.gov. affects 54 engines installed on airplanes
of U.S. registry. We also estimate that it Accordingly, under the authority
SUPPLEMENTARY INFORMATION:
will take about 1 hour per engine to delegated to me by the Administrator,
Comments Invited comply with this AD. The average labor the FAA proposes to amend 14 CFR part
We invite you to send any written rate is $85 per hour. We estimate 14 39 as follows:
relevant data, views, or arguments about parts will fail inspection at a pro-rated
cost of $400,000 per part. Based on PART 39—AIRWORTHINESS
this NPRM. Send your comments to an
these figures, we estimate the total cost DIRECTIVES
address listed under the ADDRESSES
section. Include ‘‘Docket No. FAA– of the AD to U.S. operators to be ■ 1. The authority citation for part 39
2016–5307; Directorate Identifier 2016– $5,604,590. continues to read as follows:
NE–08–AD’’ at the beginning of your Authority for This Rulemaking Authority: 49 U.S.C. 106(g), 40113, 44701.
comments. We specifically invite
comments on the overall regulatory, Title 49 of the United States Code § 39.13 [Amended]
economic, environmental, and energy specifies the FAA’s authority to issue ■ 2. The FAA amends § 39.13 by adding
aspects of this NPRM. We will consider rules on aviation safety. Subtitle I, the following new airworthiness
all comments received by the closing section 106, describes the authority of directive (AD):
date and may amend this NPRM the FAA Administrator. Subtitle VII:
because of those comments. Aviation Programs, describes in more General Electric Company: Docket No. FAA–
detail the scope of the Agency’s 2016–5307; Directorate Identifier 2016–
We will post all comments we
NE–08–AD.
receive, without change, to http:// authority.
www.regulations.gov, including any We are issuing this rulemaking under (a) Comments Due Date
personal information you provide. We the authority described in Subtitle VII, We must receive comments by June
will also post a report summarizing each Part A, Subpart III, Section 44701: 10, 2016
substantive verbal contact we receive ‘‘General requirements.’’ Under that
about this NPRM. section, Congress charges the FAA with (b) Affected ADs
promoting safe flight of civil aircraft in None.
Discussion air commerce by prescribing regulations
We received reports of multiple for practices, methods, and procedures (c) Applicability
cracks found on the seal teeth of HPC the Administrator finds necessary for This AD applies to General Electric
stage 8–10 spools during shop visits. safety in air commerce. This regulation Company (GE) GE90–76B, GE90–77B,
The cracks initiated because of degraded is within the scope of that authority GE90–85B, GE90–90B, and GE90–94B
surface properties caused by an alloy because it addresses an unsafe condition turbofan engines with a high-pressure
jstallworth on DSK7TPTVN1PROD with PROPOSALS
depletion zone (ADZ). The ADZ that is likely to exist or develop on compressor (HPC) stage 8–10 spool, part
developed over time due to higher than products identified in this rulemaking numbers (P/Ns) 1694M80G04,
predicted temperatures and reaction action. 1844M90G01, or 1844M90G02,
with the seal teeth bond coat. GE is installed.
developing a modification to address Regulatory Findings
the unsafe condition. This condition, if We determined that this proposed AD (d) Unsafe Condition
not corrected, could result in failure of would not have federalism implications This AD was prompted by reports of
the HPC stage 8–10 spool, uncontained under Executive Order 13132. This cracks found on the seal teeth of the
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![21288 Federal Register / Vol. 81, No. 69 / Monday, April 11, 2016 / Proposed Rules
HPC stage 8–10 spool. We are issuing (4) You may view this service Examining the AD Docket
this AD to prevent failure of the HPC information at the FAA, Engine & You may examine the AD docket on
stage 8–10 spool, uncontained rotor Propeller Directorate, 1200 District the Internet at http://
release, damage to the engine, and Avenue, Burlington, MA. For www.regulations.gov by searching for
damage to the airplane. information on the availability of this and locating Docket No. FAA–2015–
material at the FAA, call 781–238–7125. 3820 or in person at the Docket
(e) Compliance
Issued in Burlington, Massachusetts, on Operations Office between 9 a.m. and 5
Comply with this AD within the April 5, 2016. p.m., Monday through Friday, except
compliance times specified, unless Colleen M. D’Alessandro, Federal holidays. The AD docket
already done.
Manager, Engine & Propeller Directorate, contains this proposed AD, the
(1) Perform an eddy current
Aircraft Certification Service. economic evaluation, any comments
inspection (ECI) or fluorescent penetrant
[FR Doc. 2016–08111 Filed 4–8–16; 8:45 am] received, and other information. The
inspection (FPI) of the seal teeth of the
BILLING CODE 4910–13–P street address for the Docket Operations
HPC stage 8–10 spool as follows:
Office (telephone 800–647–5527) is in
(i) For HPC stage 8–10 spools with
the ADDRESSES section. Comments will
fewer than 11,000 cycles since new
DEPARTMENT OF TRANSPORTATION be available in the AD docket shortly
(CSN) on the effective day of this AD,
after receipt.
inspect at the next shop visit after Federal Aviation Administration For service information identified in
reaching 6,000 CSN, not to exceed
this proposed rule, contact Bell
12,500 CSN. 14 CFR Part 39 Helicopter Textron, Inc., P.O. Box 482,
(ii) For HPC stage 8–10 spools with
Fort Worth, TX 76101; telephone (817)
11,000 CSN or more on the effective day [Docket No. FAA–2015–3820; Directorate 280–3391; fax (817) 280–6466; or at
of this AD, inspect within the next 1,500 Identifier 2014–SW–024–AD]
http://www.bellcustomer.com/files/.
cycles in service.
RIN 2120–AA64 You may review the referenced service
(iii) Thereafter, inspect the seal teeth
information at the FAA, Office of the
of the HPC stage 8–10 spool at each
Airworthiness Directives; Various Regional Counsel, Southwest Region,
shop visit.
(2) Remove from service any HPC Restricted Category Helicopters 10101 Hillwood Pkwy., Room 6N–321,
stage 8–10 spool that fails the ECI or FPI Fort Worth, Texas 76177.
AGENCY: Federal Aviation
required by paragraph (e)(1) of this AD FOR FURTHER INFORMATION CONTACT:
Administration (FAA), DOT.
and replace with a part eligible for Charles Harrison, Project Manager, Fort
ACTION: Notice of proposed rulemaking Worth Aircraft Certification Office,
installation. (NPRM). 10101 Hillwood Pkwy., Fort Worth,
(f) Definition Texas 76177; telephone 817–222–5140;
SUMMARY: We propose to adopt a new
For the purpose of this AD, an engine airworthiness directive (AD) for various email Charles.C.Harrison@faa.gov.
shop visit is the induction of an engine restricted category helicopters. This SUPPLEMENTARY INFORMATION:
into the shop for maintenance during proposed AD would require cleaning Comments Invited
which the compressor discharge and visually inspecting certain main
pressure seal face is exposed. We invite you to participate in this
rotor (M/R) blades and, depending on
rulemaking by submitting written
(g) Alternative Methods of Compliance the outcome of the inspections,
comments, data, or views. We also
(AMOCs) repairing or replacing the M/R blades.
invite comments relating to the
This proposed AD is prompted by a
The Manager, Engine Certification economic, environmental, energy, or
report of an M/R blade with multiple
Office, FAA, may approve AMOCs for federalism impacts that might result
fatigue cracks around the blade
this AD. Use the procedures found in 14 from adopting the proposals in this
retention bolt hole. The proposed
CFR 39.19 to make your request. You document. The most helpful comments
actions are intended to detect a crack in
may email your request to: ANE-AD- reference a specific portion of the
the M/R blade, and prevent failure of
AMOC@faa.gov. proposal, explain the reason for any
the M/R blade and subsequent loss of
recommended change, and include
(h) Related Information helicopter control.
supporting data. To ensure the docket
(1) For more information about this DATES: We must receive comments on does not contain duplicate comments,
AD, contact John Frost, Aerospace this proposed AD by June 10, 2016. commenters should send only one copy
Engineer, Engine Certification Office, ADDRESSES: You may send comments by of written comments, or if comments are
FAA, 1200 District Avenue, Burlington, any of the following methods: filed electronically, commenters should
MA 01803; phone: 781–238–7756; fax: • Federal eRulemaking Docket: Go to submit only one time.
781–238–7199; email: john.frost@ http://www.regulations.gov. Follow the We will file in the docket all
faa.gov. online instructions for sending your comments that we receive, as well as a
(2) GE Service Bulletins SB 72–1141, comments electronically. report summarizing each substantive
Revision 0, dated December 2, 2015 and • Fax: 202–493–2251. public contact with FAA personnel
SB 72–1142, Revision 0, dated • Mail: Send comments to the U.S. concerning this proposed rulemaking.
November 30, 2015 can be obtained Department of Transportation, Docket Before acting on this proposal, we will
jstallworth on DSK7TPTVN1PROD with PROPOSALS
from GE, using the contact information Operations, M–30, West Building consider all comments we receive on or
in paragraph (h)(3) of this AD. Ground Floor, Room W12–140, 1200 before the closing date for comments.
(3) For service information identified New Jersey Avenue SE., Washington, We will consider comments filed after
in this proposed AD, contact General DC 20590–0001. the comment period has closed if it is
Electric Company, GE-Aviation, Room • Hand Delivery: Deliver to the possible to do so without incurring
285, 1 Neumann Way, Cincinnati, OH ‘‘Mail’’ address between 9 a.m. and 5 expense or delay. We may change this
45215, phone: 513–552–3272; email: p.m., Monday through Friday, except proposal in light of the comments we
aviation.fleetsupport@ge.com. Federal holidays. receive.
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Document Created: 2016-04-09 00:11:19
Document Modified: 2016-04-09 00:11:19
| 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 June 10, 2016. | |
| 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 21286 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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