Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines, 64421-64423 [2013-25460]
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Federal Register / Vol. 78, No. 209 / Tuesday, October 29, 2013 / Proposed Rules
64421
TABLE 1 TO PARAGRAPH (e)—DIFFUSER AND HPT CASE P/NS AND SERIAL NUMBERS—Continued
Diffuser case part No. (P/N)
Diffuser case S/N
1B7461 ...........................................
1B7461 ...........................................
1B7477 ...........................................
1B7477 ...........................................
1B7477 ...........................................
1B7477 ...........................................
1B4091–001 ...................................
1B4091–002 ...................................
1B4091–005 ...................................
1B7461 ...........................................
1B7477 ...........................................
1B7407 ...........................................
1B7407 ...........................................
1B7477 ...........................................
1B7477 ...........................................
1B7407–001 ...................................
1B7407 ...........................................
DGGUAK1306 ..............................
DGGUAK1356 ..............................
DGGUAL1445 ...............................
DGGUAL1492 ...............................
DGGUAL1501 ...............................
DGGUAL1597 ...............................
RT6356 .........................................
ST2044 .........................................
PF3203 .........................................
DGGUAK1377 ..............................
DGGUAL1548 ...............................
DGGUAK0189 ..............................
DGUSAA0443 ...............................
DGGUAL1441 ...............................
DGGUAL1560 ...............................
DGUSAA0329 ...............................
DGUSAA0334 ...............................
(2) For all diffuser and HPT cases:
(i) At the next piece part exposure and
every piece part exposure thereafter, perform
a high sensitivity fluorescent-penetrant
inspection (FPI) of the entire diffuser case
rear flange (M-flange) and bolt holes.
(ii) At the next piece part exposure and
every piece part exposure thereafter, perform
a high sensitivity FPI of the entire HPT case
forward flange (M-flange) and bolt holes.
(f) Prohibition Statement
After the effective date of this AD, do not
install any engine with a diffuser or HPT case
with serial number listed in Table 1 to
paragraph (e) of this AD, onto any aircraft,
that was not inspected per paragraph (e) of
this AD.
mstockstill on DSK4VPTVN1PROD with PROPOSALS
(g) Credit for Previous Actions
If you performed an eddy current
inspection of the diffuser case and HPT case
M-flange using paragraphs 3.G. through 3.L.
in the ‘‘For Engines Installed on the Aircraft’’
section or paragraphs 3.B. through 3.G. in the
‘‘For Engines Removed from the Aircraft’’
section of the Accomplishment Instructions
of PW SB PW2000 72–763, dated March 22,
2013, you met the requirements of paragraph
(e)(1) of this AD.
(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.
HPT case P/N
1B2440
1B2440
1A9030
1A9030
1A9030
1A9030
1B2440
1A9030
1A9030
1B2440
1B2440
1B2440
1B2440
1B2440
1A9030
1B2440
1B2440
1B2440
1B2440
1B2440
1B2440
1B2440
1B2440
1B2440
1B2440
1B2440
1B2440
Issued in Burlington, Massachusetts, on
October 7, 2013.
Colleen M. D’Alessandro,
Assistant Directorate Manager, Engine &
Propeller Directorate, Aircraft Certification
Service.
[FR Doc. 2013–25459 Filed 10–28–13; 8:45 am]
(i) Related Information
(1) For more information about this AD,
contact Robert Morlath, Aerospace Engineer,
Engine Certification Office, FAA, Engine &
Propeller Directorate, 12 New England
VerDate Mar<15>2010
16:26 Oct 28, 2013
Jkt 232001
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Executive Park, Burlington, MA 01803;
phone: 781–238–7154; fax: 781–238–7199;
email: robert.c.morlath@faa.gov.
(2) Pratt & Whitney Engine Manual, part
number 1A6231, Chapter 72–41–00,
Inspection/Check-02, (Task 72–41–00–230–
002) and Chapter 72–52–00, Inspection/
Check-02 (Task 72–52–00–230–000), which
are not incorporated by reference in this AD,
can be obtained from Pratt & Whitney, using
the contact information in paragraph (i)(3) of
this AD.
(3) For service information identified in
this AD, contact Pratt & Whitney, United
Technologies Corporation, 400 Main St., East
Hartford, CT 06108; phone: 860–565–8770;
fax: 860–565–4503.
(4) You may view this service information
at the FAA, Engine & Propeller Directorate,
12 New England Executive Park, Burlington,
MA. For information on the availability of
this material at the FAA, call 781–238–7125.
BILLING CODE 4910–13–P
PO 00000
Frm 00014
Fmt 4702
Sfmt 4702
HPT case S/N
DKLBDB5153
DKLBDU3358
RM6353
PD3348
PD3280
ND5644
DKLBBP0225
DKLBBR3621
PD3290
WG6904
WV1807
WX2639
WZ4057
WX2664
RM6359
DKLBCM8956
DKLBCM0214
DKLBDB5069
DKLBB02548
DKLBDC7336
DKLBDU3372
WM6913
DKLBBF6606
DKLBBB2861
DKLBCT1660
DKLBB94641
DKLBBX8092
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2013–0766; Directorate
Identifier 2013–NE–26–AD]
RIN 2120–AA64
Airworthiness Directives; Pratt &
Whitney Canada Corp. Turboprop
Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
We propose to adopt a new
airworthiness directive (AD) for all Pratt
& Whitney Canada Corp. (P&WC) PT6A–
114 and PT6A–114A turboprop engines.
This proposed AD was prompted by
several incidents of compressor turbine
(CT) blade failure, including two
fatalities, resulting in power loss and inflight shutdown (IFSD) of the engine.
This proposed AD would require initial
and repetitive borescope inspections
(BSIs) of CT blades, and the removal
from service of blades that fail
inspection. We are proposing this AD to
prevent failure of CT blades, which
could lead to damage to the engine or
to the airplane.
DATES: We must receive comments on
this proposed AD by December 30,
2013.
SUMMARY:
E:\FR\FM\29OCP1.SGM
29OCP1
64422
Federal Register / Vol. 78, No. 209 / Tuesday, October 29, 2013 / Proposed Rules
You may send comments by
any of the following methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov and follow
the instructions for sending your
comments electronically.
• Mail: Docket Management Facility,
U.S. Department of Transportation, 1200
New Jersey Avenue SE., West Building
Ground Floor, Room W12–140,
Washington, DC 20590–0001.
• Hand Delivery: Deliver to Mail
address above between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
• Fax: 202–493–2251.
For service information identified in
this proposed AD, contact Pratt &
Whitney Canada Corp., 1000 MarieVictorin, Longueuil, Quebec, Canada,
J4G 1A1; phone: 800–268–8000; fax:
450–647–2888; Internet: www.pwc.ca.
You may view this service information
at the FAA, Engine & Propeller
Directorate, 12 New England Executive
Park, Burlington, MA. For information
on the availability of this material at the
FAA, call 781–238–7125.
ADDRESSES:
Examining the AD Docket
You may examine the AD docket on
the Internet at https://
www.regulations.gov; or in person at the
Docket Operations office between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket
contains this proposed AD, the
mandatory continuing airworthiness
information (MCAI), the regulatory
evaluation, any comments received, and
other information. The street address for
the Docket Operations office (phone:
800–647–5527) is the same as the Mail
address provided in the ADDRESSES
section. Comments will be available in
the AD docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT:
James Lawrence, Aerospace Engineer,
Engine Certification Office, FAA, Engine
& Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803;
phone: 781–238–7176; fax: 781–238–
7199; email: james.lawrence@faa.gov.
SUPPLEMENTARY INFORMATION:
mstockstill on DSK4VPTVN1PROD with PROPOSALS
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
this proposed AD. Send your comments
to an address listed under the
ADDRESSES section. Include ‘‘Docket No.
FAA–2013–0766; Directorate Identifier
2013–NE–26–AD’’ at the beginning of
your comments. We specifically invite
comments on the overall regulatory,
economic, environmental, and energy
aspects of this proposed AD. We will
consider all comments received by the
VerDate Mar<15>2010
16:26 Oct 28, 2013
Jkt 232001
closing date and may amend this
proposed AD based on those comments.
We will post all comments we
receive, without change, to https://
www.regulations.gov, including any
personal information you provide. We
will also post a report summarizing each
substantive verbal contact with FAA
personnel concerning this proposed AD.
Using the search function of the Web
site, anyone can find and read the
comments in any of our dockets,
including, if provided, the name of the
individual who sent the comment (or
signed the comment on behalf of an
association, business, labor union, etc.).
You may review the DOT’s complete
Privacy Act Statement in the Federal
Register published on April 11, 2000
(65 FR 19477–78).
Discussion
Transport Canada Civil Aviation,
which is the aviation authority for
Canada, has issued Canada AD CF–
2013–21, dated August 1, 2013, (referred
to hereinafter as ‘‘the MCAI’’), to correct
an unsafe condition for the specified
products. The MCAI states:
There have been a number of reported
incidents where compressor turbine (CT)
blade failures have caused power loss on
PT6A–114 & PT6A–114A engines, resulting
in in-flight shutdown (IFSD). Investigation by
engine manufacturer Pratt & Whitney Canada
(P&WC) has determined that when operated
at high power and high temperature settings,
the subject CT blades are prone to crack/
fracture as result of creep and/or sulfidation.
You may obtain further information by
examining the MCAI in the AD docket.
We are proposing this AD to prevent
failure of CT blades, which could lead
to damage to the engine or to the
airplane.
FAA’s Determination and Requirements
of This Proposed AD
This product has been approved by
the aviation authority of Canada and is
approved for operation in the United
States. Pursuant to our bilateral
agreement with Canada, they have
notified us of the unsafe condition
described in the MCAI and service
information referenced above. We are
proposing this AD because we evaluated
all information provided by Transport
Canada Civil Aviation and determined
the unsafe condition exists and is likely
to exist or develop on other products of
the same type design. This proposed AD
would require initial and repetitive BSI
of CT blades and the removal from
service of blades that fail the inspection.
Costs of Compliance
We estimate that this proposed AD
affects 300 engines installed on aircraft
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Frm 00015
Fmt 4702
Sfmt 4702
of U.S. registry. We also estimate that it
would take about 4 hours per engine to
comply with this proposed AD. The
average labor rate is $85 per hour. Based
on these figures, we estimate the cost of
this proposed AD on U.S. operators to
be $102,000.
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 proposed
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.
We prepared a regulatory evaluation
of the estimated costs to comply with
this proposed AD and placed it in the
AD docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
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Federal Register / Vol. 78, No. 209 / Tuesday, October 29, 2013 / Proposed Rules
The Proposed Amendment
(g) Definition
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
CT blades eligible for installation are:
(1) New CT blades, other than those listed
in paragraphs (g)(3) and (g)(4) of this AD;
(2) CT blades, other than those listed in
paragraphs (g)(3) and (g)(4) of this AD, that
have met the inspection requirements of
paragraphs (e)(1) and (e)(2) of this AD;
(3) CT blade, P/N 3072791–01, and Disk
Balance Assembly, P/N 3072801–01; and
(4) CT blade, P/N 3072791–02, and Disk
Balance Assembly, P/N 3072801–02.
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
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive (AD):
■
Pratt & Whitney Canada Corp.: Docket No.
FAA–2013–0766; Directorate Identifier
2013–NE–26–AD.
(a) Comments Due Date
We must receive comments by December
30, 2013.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Pratt & Whitney
Canada Corp. (P&WC) PT6A–114 and PT6A–
114A turboprop engines.
mstockstill on DSK4VPTVN1PROD with PROPOSALS
(d) Reason
This AD was prompted by several
incidents of compressor turbine (CT) blade
failure, including two fatalities, resulting in
power loss and in-flight shutdown (IFSD) of
the engine. We are issuing this AD to prevent
failure of CT blades, which could lead to
damage to the engine or to the airplane.
(e) Actions and Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(1) Within 150 operating hours after the
effective date of this AD, perform a borescope
inspection (BSI) of CT blades for engines
with 500 or more hours time since new (TSN)
that have not been previously inspected, or
more than 500 flight hours time since last
inspection (TSLI).
(2) Thereafter, repeat the inspection in
paragraph (e)(1) of this AD within every
additional 500 flight hours TSLI.
(3) During the next hot section inspection
(HSI) after the effective date of this AD,
replace the complete set of CT blades with
blades eligible for installation.
(4) If CT blades listed in paragraphs (g)(1)
or (g)(2) of this AD, are installed to comply
with paragraph (e)(3) of this AD, you must
still comply with the 500-hour TSLI
repetitive inspection requirement of
paragraph (e)(2) of this AD.
(f) Optional Terminating Action
Replacing all CT blades with new CT
blades, P/N 3072791–01, and Disk Balance
Assembly, P/N 3072801–01; or with new CT
blades, P/N 3072791–02, and Disk Balance
Assembly, P/N 3072801–02; is terminating
action for this AD.
VerDate Mar<15>2010
16:26 Oct 28, 2013
FEDERAL TRADE COMMISSION
(h) Credit for Previous Actions
[Amended]
Jkt 232001
If you performed P&WC Service Bulletin
(SB) No. PT6A–72–1669, Revision 9, dated
June 28, 2013, or earlier versions, you have
met the initial inspection requirements of
this AD. However, you must still comply
with the 500-hour TSLI repetitive inspection
requirement of paragraph (e)(2) of this AD.
(i) Alternative Methods of Compliance
(AMOCs)
The Manager, Engine Certification Office,
FAA, may approve AMOCs to this AD. Use
the procedures found in 14 CFR 39.19 to
make your request.
(j) Related Information
(1) For more information about this AD,
contact James Lawrence, Aerospace Engineer,
Engine Certification Office, FAA, Engine &
Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803;
phone: 781–238–7176; fax: 781–238–7199;
email: james.lawrence@faa.gov.
(2) Refer to Transport Canada Civil
Aviation AD CF–2013–21, dated August 1,
2013, for more information. You may
examine the AD on the Internet at https://
www.regulations.gov by searching for and
locating it in Docket No. FAA–2013–0766.
(3) For guidance on the initial and
repetitive BSIs mandated by this AD, refer to
P&WC SB No. PT6A–72–1669 and P&WC SB
No. PT6A–72–1727, which are not
incorporated by reference in this AD. The
SBs can be obtained from Pratt & Whitney
Canada Corp. using the contact information
in paragraph (j)(4) of this AD.
(4) For service information identified in
this AD, contact Pratt & Whitney Canada
Corp., 1000 Marie-Victorin, Longueuil,
Quebec, Canada, J4G 1A1; phone: 800–268–
8000; fax: 450–647–2888; Internet:
www.pwc.ca.
(5) You may view this service information
at the FAA, Engine & Propeller Directorate,
12 New England Executive Park, Burlington,
MA. For information on the availability of
this material at the FAA, call 781–238–7125.
Issued in Burlington, Massachusetts, on
October 7, 2013.
Colleen M. D’Alessandro,
Assistant Directorate Manager, Engine &
Propeller Directorate, Aircraft Certification
Service.
[FR Doc. 2013–25460 Filed 10–28–13; 8:45 am]
BILLING CODE 4910–13–P
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64423
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16 CFR Part 312
RIN 3084–AB20
Children’s Online Privacy Protection
Rule Applications for Approval of
Proposed Parental Consent Methods
by AssertID, Inc., Imperium LLC, and
iVeriFly, Inc.; Application for Approval
of Safe Harbor Program by kidSAFE
Seal Program
Federal Trade Commission
(FTC or Commission).
ACTION: Notice of extension of
Commission determination and public
comment deadlines.
AGENCY:
The FTC is extending the
deadlines for Commission
determination of applications for
approval of proposed parental consent
methods by AssertID, Inc. (‘‘AssertID’’),
Imperium LLC (‘‘Imperium’’), and
iVeriFly, Inc. (‘‘iVeriFly’’) pursuant to
the Children’s Online Privacy Protection
Rule. In addition, the FTC is extending
the deadline for filing public comments
concerning Imperium’s application for
approval of a parental consent method
and the proposed self-regulatory
guidelines submitted by the kidSAFE
Seal Program (‘‘kidSAFE’’), owned and
operated by Samet Privacy, LLC, under
the safe harbor provision of the
Children’s Online Privacy Protection
Rule.
SUMMARY:
Written comments must be
received by November 4, 2013.
ADDRESSES: Interested parties may file
comments online or on paper, by
following the instructions in the
Request for Comment part of the
SUPPLEMENTARY INFORMATION section
below. For comments concerning
Imperium, write ‘‘Imperium Application
for Parental Consent Method, Project
No. P–135419’’ on your comment and
file your comment online at https://
ftcpublic.commentworks.com/ftc/
pmcoppaimperiumapp, by following
the instructions on the web-based form.
For comments concerning kidSAFE,
write ‘‘kidSAFE Application for Safe
Harbor, Project No. P–135418’’ on your
comment, and file your comment online
at https://ftcpublic.commentworks.com/
ftc/coppakidsafeapp, by following the
instructions on the web-based form. If
you prefer to file your comment on
paper, mail or deliver your comment to
the following address: Federal Trade
Commission, Office of the Secretary,
Room H–113 (Annex E), 600
Pennsylvania Avenue NW., Washington,
DC 20580.
DATES:
E:\FR\FM\29OCP1.SGM
29OCP1
Agencies
[Federal Register Volume 78, Number 209 (Tuesday, October 29, 2013)]
[Proposed Rules]
[Pages 64421-64423]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-25460]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2013-0766; Directorate Identifier 2013-NE-26-AD]
RIN 2120-AA64
Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop
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
Pratt & Whitney Canada Corp. (P&WC) PT6A-114 and PT6A-114A turboprop
engines. This proposed AD was prompted by several incidents of
compressor turbine (CT) blade failure, including two fatalities,
resulting in power loss and in-flight shutdown (IFSD) of the engine.
This proposed AD would require initial and repetitive borescope
inspections (BSIs) of CT blades, and the removal from service of blades
that fail inspection. We are proposing this AD to prevent failure of CT
blades, which could lead to damage to the engine or to the airplane.
DATES: We must receive comments on this proposed AD by December 30,
2013.
[[Page 64422]]
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility, U.S. Department of
Transportation, 1200 New Jersey Avenue SE., West Building Ground Floor,
Room W12-140, Washington, DC 20590-0001.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Fax: 202-493-2251.
For service information identified in this proposed AD, contact
Pratt & Whitney Canada Corp., 1000 Marie-Victorin, Longueuil, Quebec,
Canada, J4G 1A1; phone: 800-268-8000; fax: 450-647-2888; Internet:
www.pwc.ca. You may view this service information at the FAA, Engine &
Propeller Directorate, 12 New England Executive Park, 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 https://www.regulations.gov; or in person at the Docket Operations office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this proposed AD, the mandatory
continuing airworthiness information (MCAI), the regulatory evaluation,
any comments received, and other information. The street address for
the Docket Operations office (phone: 800-647-5527) is the same as the
Mail address provided in the ADDRESSES section. Comments will be
available in the AD docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT: James Lawrence, Aerospace Engineer,
Engine Certification Office, FAA, Engine & Propeller Directorate, 12
New England Executive Park, Burlington, MA 01803; phone: 781-238-7176;
fax: 781-238-7199; email: james.lawrence@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2013-0766;
Directorate Identifier 2013-NE-26-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD based on those comments.
We will post all comments we receive, without change, to https://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact
with FAA personnel concerning this proposed AD. Using the search
function of the Web site, anyone can find and read the comments in any
of our dockets, including, if provided, the name of the individual who
sent the comment (or signed the comment on behalf of an association,
business, labor union, etc.). You may review the DOT's complete Privacy
Act Statement in the Federal Register published on April 11, 2000 (65
FR 19477-78).
Discussion
Transport Canada Civil Aviation, which is the aviation authority
for Canada, has issued Canada AD CF-2013-21, dated August 1, 2013,
(referred to hereinafter as ``the MCAI''), to correct an unsafe
condition for the specified products. The MCAI states:
There have been a number of reported incidents where compressor
turbine (CT) blade failures have caused power loss on PT6A-114 &
PT6A-114A engines, resulting in in-flight shutdown (IFSD).
Investigation by engine manufacturer Pratt & Whitney Canada (P&WC)
has determined that when operated at high power and high temperature
settings, the subject CT blades are prone to crack/fracture as
result of creep and/or sulfidation.
You may obtain further information by examining the MCAI in the AD
docket. We are proposing this AD to prevent failure of CT blades, which
could lead to damage to the engine or to the airplane.
FAA's Determination and Requirements of This Proposed AD
This product has been approved by the aviation authority of Canada
and is approved for operation in the United States. Pursuant to our
bilateral agreement with Canada, they have notified us of the unsafe
condition described in the MCAI and service information referenced
above. We are proposing this AD because we evaluated all information
provided by Transport Canada Civil Aviation and determined the unsafe
condition exists and is likely to exist or develop on other products of
the same type design. This proposed AD would require initial and
repetitive BSI of CT blades and the removal from service of blades that
fail the inspection.
Costs of Compliance
We estimate that this proposed AD affects 300 engines installed on
aircraft of U.S. registry. We also estimate that it would take about 4
hours per engine to comply with this proposed AD. The average labor
rate is $85 per hour. Based on these figures, we estimate the cost of
this proposed AD on U.S. operators to be $102,000.
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 proposed 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.
We prepared a regulatory evaluation of the estimated costs to
comply with this proposed AD and placed it in the AD docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
[[Page 64423]]
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):
Pratt & Whitney Canada Corp.: Docket No. FAA-2013-0766; Directorate
Identifier 2013-NE-26-AD.
(a) Comments Due Date
We must receive comments by December 30, 2013.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Pratt & Whitney Canada Corp. (P&WC) PT6A-
114 and PT6A-114A turboprop engines.
(d) Reason
This AD was prompted by several incidents of compressor turbine
(CT) blade failure, including two fatalities, resulting in power
loss and in-flight shutdown (IFSD) of the engine. We are issuing
this AD to prevent failure of CT blades, which could lead to damage
to the engine or to the airplane.
(e) Actions and Compliance
Comply with this AD within the compliance times specified,
unless already done.
(1) Within 150 operating hours after the effective date of this
AD, perform a borescope inspection (BSI) of CT blades for engines
with 500 or more hours time since new (TSN) that have not been
previously inspected, or more than 500 flight hours time since last
inspection (TSLI).
(2) Thereafter, repeat the inspection in paragraph (e)(1) of
this AD within every additional 500 flight hours TSLI.
(3) During the next hot section inspection (HSI) after the
effective date of this AD, replace the complete set of CT blades
with blades eligible for installation.
(4) If CT blades listed in paragraphs (g)(1) or (g)(2) of this
AD, are installed to comply with paragraph (e)(3) of this AD, you
must still comply with the 500-hour TSLI repetitive inspection
requirement of paragraph (e)(2) of this AD.
(f) Optional Terminating Action
Replacing all CT blades with new CT blades, P/N 3072791-01, and
Disk Balance Assembly, P/N 3072801-01; or with new CT blades, P/N
3072791-02, and Disk Balance Assembly, P/N 3072801-02; is
terminating action for this AD.
(g) Definition
CT blades eligible for installation are:
(1) New CT blades, other than those listed in paragraphs (g)(3)
and (g)(4) of this AD;
(2) CT blades, other than those listed in paragraphs (g)(3) and
(g)(4) of this AD, that have met the inspection requirements of
paragraphs (e)(1) and (e)(2) of this AD;
(3) CT blade, P/N 3072791-01, and Disk Balance Assembly, P/N
3072801-01; and
(4) CT blade, P/N 3072791-02, and Disk Balance Assembly, P/N
3072801-02.
(h) Credit for Previous Actions
If you performed P&WC Service Bulletin (SB) No. PT6A-72-1669,
Revision 9, dated June 28, 2013, or earlier versions, you have met
the initial inspection requirements of this AD. However, you must
still comply with the 500-hour TSLI repetitive inspection
requirement of paragraph (e)(2) of this AD.
(i) Alternative Methods of Compliance (AMOCs)
The Manager, Engine Certification Office, FAA, may approve AMOCs
to this AD. Use the procedures found in 14 CFR 39.19 to make your
request.
(j) Related Information
(1) For more information about this AD, contact James Lawrence,
Aerospace Engineer, Engine Certification Office, FAA, Engine &
Propeller Directorate, 12 New England Executive Park, Burlington, MA
01803; phone: 781-238-7176; fax: 781-238-7199; email:
james.lawrence@faa.gov.
(2) Refer to Transport Canada Civil Aviation AD CF-2013-21,
dated August 1, 2013, for more information. You may examine the AD
on the Internet at https://www.regulations.gov by searching for and
locating it in Docket No. FAA-2013-0766.
(3) For guidance on the initial and repetitive BSIs mandated by
this AD, refer to P&WC SB No. PT6A-72-1669 and P&WC SB No. PT6A-72-
1727, which are not incorporated by reference in this AD. The SBs
can be obtained from Pratt & Whitney Canada Corp. using the contact
information in paragraph (j)(4) of this AD.
(4) For service information identified in this AD, contact Pratt
& Whitney Canada Corp., 1000 Marie-Victorin, Longueuil, Quebec,
Canada, J4G 1A1; phone: 800-268-8000; fax: 450-647-2888; Internet:
www.pwc.ca.
(5) You may view this service information at the FAA, Engine &
Propeller Directorate, 12 New England Executive Park, Burlington,
MA. For information on the availability of this material at the FAA,
call 781-238-7125.
Issued in Burlington, Massachusetts, on October 7, 2013.
Colleen M. D'Alessandro,
Assistant Directorate Manager, Engine & Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 2013-25460 Filed 10-28-13; 8:45 am]
BILLING CODE 4910-13-P