Airworthiness Directives; Pratt & Whitney Corp. (PW) JT9D-7R4H1 Turbofan Engines, 77107-77108 [2011-31342]
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77107
Rules and Regulations
Federal Register
Vol. 76, No. 238
Monday, December 12, 2011
This section of the FEDERAL REGISTER
contains regulatory documents having general
applicability and legal effect, most of which
are keyed to and codified in the Code of
Federal Regulations, which is published under
50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by
the Superintendent of Documents. Prices of
new books are listed in the first FEDERAL
REGISTER issue of each week.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
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:
Stephen K. Sheely, Aerospace Engineer,
Engine Certification Office, FAA, 12
New England Executive Park,
Burlington, MA 01803; phone: (781)
238–7750; fax: (781) 238–7199; email:
stephen.k.sheely@faa.gov.
[Docket No. FAA–2011–0731; Directorate
Identifier 2010–NE–39–AD; Amendment 39–
16886; AD 2011–25–10]
SUPPLEMENTARY INFORMATION:
RIN 2120–AA64
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would
apply to the specified products. That
NPRM published in the Federal
Register on July 13, 2011 (76 FR 41144).
That NPRM proposed to require:
• For HPC shafts that have more than
4,500 cycles-since-new (CSN) on the
effective date of this AD, removing the
HPC shaft from service within 500
cycles-in-service (CIS) after the effective
date of this AD or at the next shop visit
after the effective date of this AD,
whichever occurs first.
• For HPC shafts that have 4,500 or
fewer CSN on the effective date of this
AD, removing the HPC shaft from
service before exceeding 5,000 CSN.
Airworthiness Directives; Pratt &
Whitney Corp. (PW) JT9D–7R4H1
Turbofan Engines
AGENCY: Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
mstockstill on DSK4VPTVN1PROD with RULES
SUMMARY: We are adopting a new
airworthiness directive (AD) for all PW
JT9D–7R4H1 turbofan engines. This AD
was prompted by reports of cracks in
five high-pressure compressor (HPC)
shafts. This AD requires removing
certain HPC shafts before their certified
life limits and establishes a new, lower
life-limit for these parts. We are issuing
this AD to correct the unsafe condition
on these products.
DATES: This AD is effective January 17,
2012.
ADDRESSES: For service information
identified in this AD, contact Pratt &
Whitney, 400 Main St., East Hartford,
CT 06108; phone: (860) 565–1605. You
may review copies of the referenced
service information at the FAA, Engine
& Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803.
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 https://
www.regulations.gov; or in person at the
Docket Management Facility between
9 a.m. and 5 p.m., Monday through
Friday, except Federal holidays. The AD
VerDate Mar<15>2010
16:14 Dec 09, 2011
Jkt 226001
Discussion
Comments
We gave the public the opportunity to
participate in developing this AD. The
following presents the comment
received on the proposal and the FAA’s
response to this comment.
Request To Clarify Exemption for JT9D–
7R4E1 and JT9D–7R4E1H Engine
Models
One commenter, FedEx Express,
requested that the FAA clearly state the
exemption of JT9D–7R4E1 and –7R4E1H
engine models from this requirement.
We partially agree. We do not agree
that it is necessary to specifically
exempt the JT9D–7R4E1 and –7R4E1H
engine models because the Applicability
paragraph clearly states that this AD
applies only to the PW JT9D–7R4H1
turbofan engine model. All other models
(including the JT9D–7R4E1 and
PO 00000
Frm 00001
Fmt 4700
Sfmt 4700
–7R4E1H models) are automatically
excluded from the compliance
requirements. However, we do agree
that the installation prohibition
statement could be misinterpreted to go
beyond the scope of the AD
applicability. Therefore, we revised this
AD by adding ‘‘JT9D–7R4H1’’ to
paragraph (i)(2).
Conclusion
We reviewed the relevant data,
considered the comment received, and
determined that air safety and the
public interest require adopting the AD
with the changes described previously
and minor editorial changes. We have
determined that these minor changes:
• Are consistent with the intent that
was proposed in the NPRM (76 FR
41144, July 13, 2011) for correcting the
unsafe condition; and
• Do not add any additional burden
upon the public than was already
proposed in the NPRM (76 FR 41144,
July 13, 2011).
We also determined that these
changes will not increase the economic
burden on any operator or increase the
scope of the AD.
Costs of Compliance
We estimate that this AD does not
affect any engines installed on airplanes
of U.S. registry.
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.
E:\FR\FM\12DER1.SGM
12DER1
77108
Federal Register / Vol. 76, No. 238 / Monday, December 12, 2011 / Rules and Regulations
Regulatory Findings
(e) Compliance
DEPARTMENT OF TRANSPORTATION
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
(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.
Comply with this AD within the
compliance times specified, unless already
done.
Federal Aviation Administration
(f) Engines With an HPC Shaft, P/N 808071,
That Has More Than 4,500 Cycles-SinceNew (CSN)
For engines with an HPC shaft, P/N
808071, that has more than 4,500 CSN on the
effective date of this AD, remove the HPC
shaft from service within 500 cycles-inservice (CIS) after the effective date of the AD
or at piece-part exposure, whichever occurs
first.
(g) Engines With an HPC Shaft, P/N 808071,
That Has 4,500 or Fewer CSN
For engines with an HPC shaft, P/N
808071, that has 4,500 or fewer CSN on the
effective date of this AD, remove the HPC
shaft from service before exceeding 5,000
CSN.
(h) Engines With an HPC Shaft, P/N 808070,
Removal From Service
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
For engines with an HPC shaft, P/N
808070, remove the HPC shaft, P/N 808070,
from service before exceeding 1,200 CSN.
(i) Installation Prohibition
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
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
(1) After the effective date of this AD, do
not install or reinstall into any engine any
HPC shaft removed in accordance with
paragraphs (f), (g), or (h) of this AD.
(2) After the effective date of this AD, do
not install or reinstall into any JT9D–7R4H1
engine:
(i) Any HPC shaft, P/N 808071, that is at
piece-part exposure and exceeds the new
lower life limit of 5,000 CSN, or
(ii) Any HPC shaft, P/N 808070, that is at
piece-part exposure and exceeds the new
lower life limit of 1,200 CSN.
(j) Alternative Methods of Compliance
(AMOCs)
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive (AD):
2011–25–10 Pratt & Whitney Corp:
Amendment 39–16886; Docket No.
FAA–2011–0731; Directorate Identifier
2010–NE–39–AD.
The Manager, Engine Certification Office,
FAA, has the authority to approve AMOCs
for this AD, if requested using the procedures
found in 14 CFR 39.19.
(k) Related Information
■
(a) Effective Date
This AD is effective January 17, 2012.
mstockstill on DSK4VPTVN1PROD with RULES
(b) Affected ADs
None.
(c) Applicability
Pratt & Whitney Corp (PW) JT9D–7R4H1
turbofan engines with a high-pressure
compressor (HPC) shaft, part number (P/N)
808070 or 808071, installed.
(d) Unsafe Condition
This AD was prompted by reports of cracks
in five HPC shafts. We are issuing this AD
to correct the unsafe condition on these
products.
VerDate Mar<15>2010
16:14 Dec 09, 2011
Jkt 226001
For more information about this AD,
contact Stephen K. Sheely, Aerospace
Engineer, Engine Certification Office, FAA,
12 New England Executive Park, Burlington,
MA 01803; phone: (781) 238–7750; fax: (781)
238–7199; email: stephen.k.sheely@faa.gov.
(l) Material Incorporated by Reference
None.
Issued in Burlington, MA, on November
29, 2011.
Peter A. White,
Manager, Engine & Propeller Directorate,
Aircraft Certification Service.
[FR Doc. 2011–31342 Filed 12–9–11; 8:45 am]
BILLING CODE 4910–13–P
PO 00000
Frm 00002
Fmt 4700
Sfmt 4700
14 CFR Part 39
[Docket No. FAA–2010–0494; Directorate
Identifier 2010–NE–20–AD; Amendment 39–
16884; AD 2011–25–08]
RIN 2120–AA64
Airworthiness Directives; International
Aero Engines Turbofan Engines
AGENCY: Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
SUMMARY: We are adopting a new
airworthiness directive (AD) for
International Aero Engines (IAE)
V2500–A1, V2522–A5, V2524–A5,
V2525–D5, V2527–A5, V2527E–A5,
V2527M–A5, V2528–D5, V2530–A5,
and V2533–A5 turbofan engines. This
AD was prompted by three reports of
high-pressure turbine (HPT) case burnthrough events, numerous reports of
loss of stage 1 blade outer air seal
segments, and HPT case bulging. This
AD requires initial and repetitive 360
degree borescope inspections of HPT
stage 1 blade outer air seal segments for
evidence of certain distress conditions.
This AD also requires incorporation of
improved durability stage 1 blade outer
air seal segments at the next exposure to
the HPT module subassembly as
terminating action to the repetitive
inspections. We are issuing this AD to
prevent HPT case burn-through,
uncontrolled under-cowl engine fire,
and damage to the airplane.
DATES: This AD is effective January 17,
2012.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in the AD
as of January 17, 2012.
ADDRESSES: For service information
identified in this AD, contact
International Aero Engines AG, 628
Hebron Avenue, Suite 400, Glastonbury,
CT 06033; phone: (860) 368–3700; fax:
(860) 368–4600; email:
iaeinfo@iaev2500.com; Web site:
https://www.iaeworld.com. You may
review copies of the referenced service
information at the FAA, Engine &
Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803.
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 https://
www.regulations.gov; or in person at the
E:\FR\FM\12DER1.SGM
12DER1
Agencies
[Federal Register Volume 76, Number 238 (Monday, December 12, 2011)]
[Rules and Regulations]
[Pages 77107-77108]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-31342]
========================================================================
Rules and Regulations
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains regulatory documents
having general applicability and legal effect, most of which are keyed
to and codified in the Code of Federal Regulations, which is published
under 50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by the Superintendent of Documents.
Prices of new books are listed in the first FEDERAL REGISTER issue of each
week.
========================================================================
Federal Register / Vol. 76, No. 238 / Monday, December 12, 2011 /
Rules and Regulations
[[Page 77107]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2011-0731; Directorate Identifier 2010-NE-39-AD;
Amendment 39-16886; AD 2011-25-10]
RIN 2120-AA64
Airworthiness Directives; Pratt & Whitney Corp. (PW) JT9D-7R4H1
Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for all PW
JT9D-7R4H1 turbofan engines. This AD was prompted by reports of cracks
in five high-pressure compressor (HPC) shafts. This AD requires
removing certain HPC shafts before their certified life limits and
establishes a new, lower life-limit for these parts. We are issuing
this AD to correct the unsafe condition on these products.
DATES: This AD is effective January 17, 2012.
ADDRESSES: For service information identified in this AD, contact Pratt
& Whitney, 400 Main St., East Hartford, CT 06108; phone: (860) 565-
1605. You may review copies of the referenced service information at
the FAA, Engine & Propeller Directorate, 12 New England Executive Park,
Burlington, MA 01803. 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 https://www.regulations.gov; 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: Stephen K. Sheely, Aerospace Engineer,
Engine Certification Office, FAA, 12 New England Executive Park,
Burlington, MA 01803; phone: (781) 238-7750; fax: (781) 238-7199;
email: stephen.k.sheely@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
That NPRM published in the Federal Register on July 13, 2011 (76 FR
41144). That NPRM proposed to require:
For HPC shafts that have more than 4,500 cycles-since-new
(CSN) on the effective date of this AD, removing the HPC shaft from
service within 500 cycles-in-service (CIS) after the effective date of
this AD or at the next shop visit after the effective date of this AD,
whichever occurs first.
For HPC shafts that have 4,500 or fewer CSN on the
effective date of this AD, removing the HPC shaft from service before
exceeding 5,000 CSN.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comment received on the proposal
and the FAA's response to this comment.
Request To Clarify Exemption for JT9D-7R4E1 and JT9D-7R4E1H Engine
Models
One commenter, FedEx Express, requested that the FAA clearly state
the exemption of JT9D-7R4E1 and -7R4E1H engine models from this
requirement.
We partially agree. We do not agree that it is necessary to
specifically exempt the JT9D-7R4E1 and -7R4E1H engine models because
the Applicability paragraph clearly states that this AD applies only to
the PW JT9D-7R4H1 turbofan engine model. All other models (including
the JT9D-7R4E1 and -7R4E1H models) are automatically excluded from the
compliance requirements. However, we do agree that the installation
prohibition statement could be misinterpreted to go beyond the scope of
the AD applicability. Therefore, we revised this AD by adding ``JT9D-
7R4H1'' to paragraph (i)(2).
Conclusion
We reviewed the relevant data, considered the comment received, and
determined that air safety and the public interest require adopting the
AD with the changes described previously and minor editorial changes.
We have determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM (76 FR 41144, July 13, 2011) for correcting the unsafe condition;
and
Do not add any additional burden upon the public than was
already proposed in the NPRM (76 FR 41144, July 13, 2011).
We also determined that these changes will not increase the
economic burden on any operator or increase the scope of the AD.
Costs of Compliance
We estimate that this AD does not affect any engines installed on
airplanes of U.S. registry.
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.
[[Page 77108]]
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
(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):
2011-25-10 Pratt & Whitney Corp: Amendment 39-16886; Docket No. FAA-
2011-0731; Directorate Identifier 2010-NE-39-AD.
(a) Effective Date
This AD is effective January 17, 2012.
(b) Affected ADs
None.
(c) Applicability
Pratt & Whitney Corp (PW) JT9D-7R4H1 turbofan engines with a
high-pressure compressor (HPC) shaft, part number (P/N) 808070 or
808071, installed.
(d) Unsafe Condition
This AD was prompted by reports of cracks in five HPC shafts. We
are issuing this AD to correct the unsafe condition on these
products.
(e) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(f) Engines With an HPC Shaft, P/N 808071, That Has More Than 4,500
Cycles-Since-New (CSN)
For engines with an HPC shaft, P/N 808071, that has more than
4,500 CSN on the effective date of this AD, remove the HPC shaft
from service within 500 cycles-in-service (CIS) after the effective
date of the AD or at piece-part exposure, whichever occurs first.
(g) Engines With an HPC Shaft, P/N 808071, That Has 4,500 or Fewer CSN
For engines with an HPC shaft, P/N 808071, that has 4,500 or
fewer CSN on the effective date of this AD, remove the HPC shaft
from service before exceeding 5,000 CSN.
(h) Engines With an HPC Shaft, P/N 808070, Removal From Service
For engines with an HPC shaft, P/N 808070, remove the HPC shaft,
P/N 808070, from service before exceeding 1,200 CSN.
(i) Installation Prohibition
(1) After the effective date of this AD, do not install or
reinstall into any engine any HPC shaft removed in accordance with
paragraphs (f), (g), or (h) of this AD.
(2) After the effective date of this AD, do not install or
reinstall into any JT9D-7R4H1 engine:
(i) Any HPC shaft, P/N 808071, that is at piece-part exposure
and exceeds the new lower life limit of 5,000 CSN, or
(ii) Any HPC shaft, P/N 808070, that is at piece-part exposure
and exceeds the new lower life limit of 1,200 CSN.
(j) Alternative Methods of Compliance (AMOCs)
The Manager, Engine Certification Office, FAA, has the authority
to approve AMOCs for this AD, if requested using the procedures
found in 14 CFR 39.19.
(k) Related Information
For more information about this AD, contact Stephen K. Sheely,
Aerospace Engineer, Engine Certification Office, FAA, 12 New England
Executive Park, Burlington, MA 01803; phone: (781) 238-7750; fax:
(781) 238-7199; email: stephen.k.sheely@faa.gov.
(l) Material Incorporated by Reference
None.
Issued in Burlington, MA, on November 29, 2011.
Peter A. White,
Manager, Engine & Propeller Directorate, Aircraft Certification
Service.
[FR Doc. 2011-31342 Filed 12-9-11; 8:45 am]
BILLING CODE 4910-13-P