80 FR 24791 - Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 80, Issue 84 (May 1, 2015)
Federal Aviation Administration
Federal Register Volume 80, Issue 84 (May 1, 2015)
| Page Range | 24791-24793 | |
| FR Document | 2015-10075 |
[Federal Register Volume 80, Number 84 (Friday, May 1, 2015)] [Rules and Regulations] [Pages 24791-24793] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2015-10075] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2013-0766; Directorate Identifier 2013-NE-26-AD; Amendment 39-18149; AD 2014-17-08R1] RIN 2120-AA64 Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. ----------------------------------------------------------------------- SUMMARY: We are revising airworthiness directive (AD) 2014-17-08 for all Pratt & Whitney Canada Corp. (P&WC) PT6A-114 and PT6A-114A turboprop engines. AD 2014-17-08 required initial and repetitive borescope inspections (BSIs) of compressor turbine (CT) blades, and the removal from service of blades that fail inspection. This new AD adds an additional single crystal CT blade, reduces the affected population, and corrects the Credit for Previous Action paragraph. This AD was prompted by P&WC development of an additional single crystal CT blade that corrects the unsafe condition. We are issuing this AD to prevent failure of CT blades, which could result in damage to the engine and damage to the airplane. DATES: This AD is effective June 5, 2015. The Director of the Federal Register approved the incorporation by reference of a certain other publications listed in this AD as of October 8, 2014 (79 FR 52172, September 3, 2014). ADDRESSES: 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. 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. Certain service information is also available on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2013-0766. 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-2013- 0766; 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: Barbara Caufield, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7146; fax: 781-238-7199; email: [email protected]. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to revise AD 2014-17-08, Amendment 39-17961 (79 FR 52172, September 3, 2014), (``AD 2014-17-08''). AD 2014-17-08 applied to all P&WC PT6A-114 and PT6A-114A turboprop engines. The NPRM published in the Federal Register on December 1, 2014 (79 FR 71031). The NPRM was prompted by P&WC development of an additional single crystal CT blade that corrects the unsafe condition. The addition of this new part number (P/N) reduces the affected population. The NPRM proposed to retain all the requirements of AD 2014-17-08. The NPRM also proposed to add [[Page 24792]] the additional single crystal CT blade that corrects the unsafe condition, reduce the affected population, and correct the Credit for Previous Action paragraph. We are issuing this AD to prevent failure of CT blades, which could result in 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 (79 FR 71031, December 1, 2014) and the FAA's response to each comment. Request To Clarify Disposition of Removed CT Blades Hawkins Aero Engineering, Inc. and another commenter requested that we state more clearly whether pre-SB (service bulletin) PT6A-72-1669 CT blades removed as a result of this AD can be reinstalled in the same engine, the same model engine, or a different model engine. We disagree. Paragraph (e)(1)(iii)(B) of this AD clearly states that to re-install removed pre-SB PT6A-72-1669 CT blades, the blades must pass a two-blade metallurgical inspection to determine airworthiness in accordance with paragraph 3.B., Accomplishment Instructions, of P&WC Service Bulletin (SB) No. PT6A-72-1669, Revision 9, dated June 28, 2013. We did not change this AD. Request To Not Mandate Installation of Single Crystal CT Blades One commenter requested that we not mandate the installation of single crystal CT blades because two of the P/Ns cited as replacement blades have experienced low-time failures, indicating a design or manufacturing flaw. We disagree. While there have been some failures of single crystal CT blades on a different engine model, that failure mode is well understood and does not affect the engines that are the subject of this AD. For the engines that are subject to this AD, single crystal blades provide a significant improvement in durability and a significant reduction in CT blade failures overall. We did not change this AD. Request To Reference Two Additional SBs One commenter requested that we reference P&WC SBs No. PT6A-72-1727 and No. PT6A-72-1749 in addition to P&WC SB No. PT6A-72-1669 because each one of these SBs references one of the three single crystal CT blades that can be installed as terminating action to this AD. P&WC SB No. PT6A-72-1669 alone only references one of the three blades listed as terminating action in paragraph (e)(2) of this AD. We agree. We added references to the two additional SBs in paragraph (h)(2) of this AD. Request To Include Alternative Method of Compliance (AMOC) for Inspections Hawkins Aero Engineering, Inc. requested that we include in the AD an AMOC to allow a visual inspection, accomplished by splitting the engine at the C-flange, as an alternative method to the required periodic borescope inspection of pre-SB PT6A-72-1669 CT blades. The commenter states that this suggested visual method would provide easier detection of cracks. We disagree. This AD contains the required method for resolving the unsafe condition. If an operator can accomplish required actions in a better way, or a way that better suits the operator's business processes, and the alternative method provides an acceptable level of safety, then the operator can apply for an AMOC to use that method to address the unsafe condition in accordance with paragraph (g)(2) of this AD. We did not change this AD. Request That We Address Failures in Additional Blades Hawkins Aero Engineering, Inc. requested that we address single crystal CT blade failures either in this or in another AD because there have been several low-time single crystal CT blade failures in several different PT6 engine models, some of which are single engine installations. We disagree. Low-time failures that occurred on engine models not affected by this AD are due to a failure mode that is well understood. That failure mode does not occur in the engine models that are the subject of this AD. We did not change this AD. 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 (79 FR 71031, December 1, 2014) for correcting the unsafe condition; and Do not add any additional burden upon the public than was already proposed in NPRM (79 FR 71031, December 1, 2014). We also determined that these changes will not increase the economic burden on any operator or increase the scope of this AD. Costs of Compliance We estimate that this AD affects 300 engines installed on airplanes of U.S. registry. We also estimate that it would take about 4 hours per engine to perform the required inspection and 8 hours to replace the blades. The average labor rate is $85 per hour. Required parts cost about $59,334 per engine. Based on these figures, we estimate the cost of this AD on U.S. operators to be $18,106,200. 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 have determined that 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 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. [[Page 24793]] 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 removing Airworthiness Directive (AD) 2014-17-08, Amendment 39-17961 (79 FR 52172, September 3, 2014), and adding the following new AD: 2014-17-08R1 Pratt & Whitney Canada Corp.: Amendment 39-18149; Docket No. FAA-2013-0766; Directorate Identifier 2013-NE-26-AD. (a) Effective Date This AD is effective June 5, 2015. (b) Affected ADs This AD replaces AD 2014-17-08, Amendment 39-17961 (79 FR 52172, September 3, 2014). (c) Applicability This AD applies to all Pratt & Whitney Canada Corp. (P&WC) PT6A- 114 and PT6A-114A turboprop engines. (d) Unsafe Condition This AD was prompted by several incidents of compressor turbine (CT) blade failure, causing power loss, and engine failure. We are issuing this AD to prevent failure of CT blades, which could lead to 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 engines installed with CT blades other than P&WC single crystal CT blades, part numbers (P/Ns) 3072791-01, 3072791-02, or 3079351-01, do the following: (i) Until removed, per the requirements of this AD, borescope inspect the CT blade leading and trailing edges, within the following intervals, whichever occurs later: (A) 150 operating hours after October 8, 2014; or (B) 500 operating hours since new; or (C) 500 operating hours since last borescope inspection (BSI) of the CT blades; or (D) Before next flight after the effective date of this AD. (ii) Thereafter, repeat the inspection required by paragraph (e)(1)(i) of this AD every 500 flight hours time since last inspection. (iii) At the next hot section inspection (HSI) after the effective date of this AD, and each HSI thereafter, replace the complete set of CT blades with any of the following: (A) New CT blades; (B) CT blades that have passed a two-blade metallurgical inspection. Use paragraph 3.B., Accomplishment Instructions, of P&WC Service Bulletin (SB) No. PT6A-72-1669, Revision 9, dated June 28, 2013, to do the inspection; or (C) P&WC single crystal CT blades, P/N 3072791-01, 3072791-02, or 3079351-01. (2) Replacement of the complete set of CT blades with single crystal CT blades, P/N 3072791-01, 3072791-02, or 3079351-01 is terminating action for the requirements of paragraph (e)(1) of this AD. (3) By October 8, 2017, replace the complete set of CT blades with P&WC single crystal CT blades, P/N 3072791-01, 3072791-02, or 3079351-01. (f) Credit for Previous Action Performance of the metallurgical examination specified in paragraph (e)(1)(iii)(B) of this AD on CT blades other than P&WC single crystal CT blades, P/N 3072791-01, 3072791-02, or 3079351-01, before the effective date of this AD fulfills the initial inspection requirements of paragraph (e)(1)(i) of this AD. However, you must still comply with the repetitive BSI requirement of paragraph (e)(1)(ii) of this AD until you complete the mandatory terminating action of paragraph (e)(3) of this AD. (g) Alternative Methods of Compliance (AMOCs) (1) AMOCs previously approved for AD 2014-17-08, Amendment 39- 17961 (79 FR 52172, September 3, 2014) are approved for this AD. (2) 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 Barbara Caufield, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7146; fax: 781-238-7199; email: [email protected]. (2) P&WC SB No. PT6A-72-1727, dated August 23, 2013, and SB No. PT6A-72-1749, dated September 23, 2014, which are not incorporated by reference in this AD, can be obtained from P&WC using the contact information in paragraph (i)(4) of this AD. (i) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (3) The following service information was approved for IBR on October 8, 2014 (79 FR 52172, September 3, 2014). (i) Pratt & Whitney Canada Service Bulletin No. PT6A-72-1669, Revision 9, dated June 28, 2013. (ii) Reserved. (4) For P&WC 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 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. (6) You may view this service information at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html. Issued in Burlington, Massachusetts, on April 17, 2015. Thomas A. Boudreau, Acting Directorate Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2015-10075 Filed 4-30-15; 8:45 am] BILLING CODE 4910-13-P
![Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Rules and Regulations 24791
the airplane, in accordance with step 2) in 2015. The date appears only on the first page of a certain other publications listed in
‘‘DESIRED ACTION’’ of Boeing Multi of this document. this AD as of October 8, 2014 (79 FR
Operator Message MOM–MOM–15–0248– (3) For service information identified in 52172, September 3, 2014).
01B, dated April 19, 2015; or Boeing Multi this AD, contact Boeing Commercial
Operator Message MOM–MOM–15–0248– Airplanes, Attention: Data & Services ADDRESSES: For service information
01B(R1), dated April 20, 2015. The main and Management, P.O. Box 3707, MC 2H–65, identified in this AD, contact Pratt &
auxiliary power unit (APU) batteries do not Seattle, WA 98124–2207; telephone 206– Whitney Canada Corp., 1000 Marie-
need to be disconnected when performing 544–5000, extension 1; fax 206–766–5680; Victorin, Longueuil, Quebec, Canada,
the electrical power deactivation. Repeat the Internet https://www.myboeingfleet.com. J4G 1A1; phone: 800–268–8000; fax:
electrical power deactivation thereafter at (4) You may view this service information 450–647–2888; Internet: www.pwc.ca.
intervals not to exceed 120 days. at the FAA, Transport Airplane Directorate,
1601 Lind Avenue SW., Renton, WA. For You may view this service information
(1) Within 120 days after the last electrical
power deactivation in accordance with step information on the availability of this at the FAA, Engine & Propeller
2) in ‘‘DESIRED ACTION’’ of Boeing Multi material at the FAA, call 425–227–1221. Directorate, 12 New England Executive
Operator Message MOM–MOM–15–0248– (5) You may view this service information Park, Burlington, MA. For information
01B, dated April 19, 2015; or Boeing Multi that is incorporated by reference at the on the availability of this material at the
Operator Message MOM–MOM–15–0248– National Archives and Records FAA, call 781–238–7125. Certain
01B(R1), dated April 20, 2015. Administration (NARA). For information on service information is also available on
(2) Within 120 days after the date of the availability of this material at NARA, call
202–741–6030, or go to http://
the Internet at http://
issuance of the original certificate of www.regulations.gov by searching for
airworthiness or the date of issuance of the www.archives.gov/federal-register/cfr/ibr-
original export certificate of airworthiness. locations.html. and locating Docket No. FAA–2013–
(3) Within 7 days after the effective date of 0766.
Issued in Renton, Washington, on April 23,
this AD. 2015. Examining the AD Docket
(h) Special Flight Permit Jeffrey E. Duven, You may examine the AD docket on
Special flight permits, as described in Manager, Transport Airplane Directorate, the Internet at http://
Section 21.197 and Section 21.199 of the Aircraft Certification Service.
www.regulations.gov by searching for
Federal Aviation Regulations (14 CFR 21.197 [FR Doc. 2015–10066 Filed 4–30–15; 8:45 am] and locating Docket No. FAA–2013–
and 21.199), are not allowed. BILLING CODE 4910–13–P 0766; or in person at the Docket
(i) Alternative Methods of Compliance Management Facility between 9 a.m.
(AMOCs) and 5 p.m., Monday through Friday,
(1) The Manager, Seattle Aircraft
DEPARTMENT OF TRANSPORTATION except Federal holidays. The AD docket
Certification Office (ACO), FAA, has the
Federal Aviation Administration contains this AD, the regulatory
authority to approve AMOCs for this AD, if evaluation, any comments received, and
requested using the procedures found in 14 other information. The address for the
CFR 39.19. In accordance with 14 CFR 39.19, 14 CFR Part 39
Docket Office (phone: 800–647–5527) is
send your request to your principal inspector [Docket No. FAA–2013–0766; Directorate
or local Flight Standards District Office, as
Document Management Facility, U.S.
Identifier 2013–NE–26–AD; Amendment 39– Department of Transportation, Docket
appropriate. If sending information directly 18149; AD 2014–17–08R1]
to the manager of the ACO, send it to the Operations, M–30, West Building
attention of the person identified in RIN 2120–AA64 Ground Floor, Room W12–140, 1200
paragraph (j) of this AD. Information may be New Jersey Avenue SE., Washington,
emailed to: 9-ANM-Seattle-ACO-AMOC- Airworthiness Directives; Pratt & DC 20590.
Requests@faa.gov. Whitney Canada Corp. Turboprop FOR FURTHER INFORMATION CONTACT:
(2) Before using any approved AMOC, Engines
notify your appropriate principal inspector, Barbara Caufield, Aerospace Engineer,
or lacking a principal inspector, the manager AGENCY: Federal Aviation Engine Certification Office, FAA, Engine
of the local flight standards district office/ Administration (FAA), DOT. & Propeller Directorate, 12 New England
certificate holding district office. ACTION: Final rule. Executive Park, Burlington, MA 01803;
(j) Related Information
phone: 781–238–7146; fax: 781–238–
SUMMARY: We are revising airworthiness 7199; email: barbara.caufield@faa.gov.
For more information about this AD, directive (AD) 2014–17–08 for all Pratt
contact Kelly McGuckin, Aerospace SUPPLEMENTARY INFORMATION:
Engineer, Systems and Equipment Branch,
& Whitney Canada Corp. (P&WC) PT6A–
114 and PT6A–114A turboprop engines. Discussion
ANM–130S, FAA, Seattle Aircraft
Certification Office (ACO), 1601 Lind Avenue AD 2014–17–08 required initial and We issued a notice of proposed
SW., Renton, WA 98057–3356; phone: 425– repetitive borescope inspections (BSIs) rulemaking (NPRM) to amend 14 CFR
917–6490; fax: 425–917–6590; email: of compressor turbine (CT) blades, and part 39 to revise AD 2014–17–08,
Kelly.McGuckin@faa.gov. the removal from service of blades that Amendment 39–17961 (79 FR 52172,
(k) Material Incorporated by Reference fail inspection. This new AD adds an September 3, 2014), (‘‘AD 2014–17–
(1) The Director of the Federal Register
additional single crystal CT blade, 08’’). AD 2014–17–08 applied to all
approved the incorporation by reference reduces the affected population, and P&WC PT6A–114 and PT6A–114A
(IBR) of the service information listed in this corrects the Credit for Previous Action turboprop engines. The NPRM
paragraph under 5 U.S.C. 552(a) and 1 CFR paragraph. This AD was prompted by published in the Federal Register on
part 51. P&WC development of an additional December 1, 2014 (79 FR 71031). The
(2) You must use this service information single crystal CT blade that corrects the NPRM was prompted by P&WC
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as applicable to do the actions required by unsafe condition. We are issuing this development of an additional single
this AD, unless the AD specifies otherwise. AD to prevent failure of CT blades, crystal CT blade that corrects the unsafe
(i) Boeing Multi Operator Message MOM–
MOM–15–0248–01B, dated April 19, 2015.
which could result in damage to the condition. The addition of this new part
The date appears only on the first page of this engine and damage to the airplane. number (P/N) reduces the affected
document. DATES: This AD is effective June 5, 2015. population. The NPRM proposed to
(ii) Boeing Multi Operator Message MOM– The Director of the Federal Register retain all the requirements of AD 2014–
MOM–15–0248–01B(R1), dated April 20, approved the incorporation by reference 17–08. The NPRM also proposed to add
VerDate Sep<11>2014 15:47 Apr 30, 2015 Jkt 235001 PO 00000 Frm 00013 Fmt 4700 Sfmt 4700 E:\FR\FM\01MYR1.SGM 01MYR1](https://thefederalregister.org/doc/80_FR_24875/page/1.svg)
![Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Rules and Regulations 24793
List of Subjects in 14 CFR Part 39 every 500 flight hours time since last (3) The following service information was
inspection. approved for IBR on October 8, 2014 (79 FR
Air transportation, Aircraft, Aviation (iii) At the next hot section inspection 52172, September 3, 2014).
safety, Incorporation by reference, (HSI) after the effective date of this AD, and (i) Pratt & Whitney Canada Service Bulletin
Safety. each HSI thereafter, replace the complete set No. PT6A–72–1669, Revision 9, dated June
of CT blades with any of the following: 28, 2013.
Adoption of the Amendment (ii) Reserved.
(A) New CT blades;
Accordingly, under the authority (B) CT blades that have passed a two-blade (4) For P&WC service information
delegated to me by the Administrator, metallurgical inspection. Use paragraph 3.B., identified in this AD, contact Pratt & Whitney
Accomplishment Instructions, of P&WC Canada Corp., 1000 Marie-Victorin,
the FAA amends 14 CFR part 39 as Longueuil, Quebec, Canada, J4G 1A1; phone:
follows: Service Bulletin (SB) No. PT6A–72–1669,
Revision 9, dated June 28, 2013, to do the 800–268–8000; fax: 450–647–2888; Internet:
www.pwc.ca.
PART 39—AIRWORTHINESS inspection; or
(5) You may view this service information
DIRECTIVES (C) P&WC single crystal CT blades, P/N
at FAA, Engine & Propeller Directorate, 12
3072791–01, 3072791–02, or 3079351–01.
New England Executive Park, Burlington,
■ 1. The authority citation for part 39 (2) Replacement of the complete set of CT MA. For information on the availability of
continues to read as follows: blades with single crystal CT blades, P/N this material at the FAA, call 781–238–7125.
3072791–01, 3072791–02, or 3079351–01 is (6) You may view this service information
Authority: 49 U.S.C. 106(g), 40113, 44701. terminating action for the requirements of at the National Archives and Records
paragraph (e)(1) of this AD. Administration (NARA). For information on
§ 39.13 [Amended]
(3) By October 8, 2017, replace the the availability of this material at NARA, call
■ 2. The FAA amends § 39.13 by complete set of CT blades with P&WC single 202–741–6030, or go to: http://
removing Airworthiness Directive (AD) crystal CT blades, P/N 3072791–01, www.archives.gov/federal-register/cfr/ibr-
2014–17–08, Amendment 39–17961 (79 3072791–02, or 3079351–01. locations.html.
FR 52172, September 3, 2014), and (f) Credit for Previous Action Issued in Burlington, Massachusetts, on
adding the following new AD: April 17, 2015.
Performance of the metallurgical
2014–17–08R1 Pratt & Whitney Canada examination specified in paragraph Thomas A. Boudreau,
Corp.: Amendment 39–18149; Docket (e)(1)(iii)(B) of this AD on CT blades other Acting Directorate Manager, Engine &
No. FAA–2013–0766; Directorate than P&WC single crystal CT blades, P/N Propeller Directorate, Aircraft Certification
Identifier 2013–NE–26–AD. 3072791–01, 3072791–02, or 3079351–01, Service.
(a) Effective Date before the effective date of this AD fulfills the [FR Doc. 2015–10075 Filed 4–30–15; 8:45 am]
initial inspection requirements of paragraph BILLING CODE 4910–13–P
This AD is effective June 5, 2015. (e)(1)(i) of this AD. However, you must still
(b) Affected ADs comply with the repetitive BSI requirement
of paragraph (e)(1)(ii) of this AD until you DEPARTMENT OF TRANSPORTATION
This AD replaces AD 2014–17–08,
Amendment 39–17961 (79 FR 52172, complete the mandatory terminating action
September 3, 2014). of paragraph (e)(3) of this AD. Federal Aviation Administration
(c) Applicability (g) Alternative Methods of Compliance
(AMOCs) 14 CFR Part 71
This AD applies to all Pratt & Whitney
Canada Corp. (P&WC) PT6A–114 and PT6A– (1) AMOCs previously approved for AD [Docket No. FAA–2015–0794; Airspace
114A turboprop engines. 2014–17–08, Amendment 39–17961 (79 FR Docket No. 15–ASO–5]
52172, September 3, 2014) are approved for
(d) Unsafe Condition this AD. Proposed Amendment of Class E
This AD was prompted by several (2) The Manager, Engine Certification Airspace; Jupiter, FL
incidents of compressor turbine (CT) blade Office, FAA, may approve AMOCs for this
failure, causing power loss, and engine AD. Use the procedures found in 14 CFR AGENCY: Federal Aviation
failure. We are issuing this AD to prevent 39.19 to make your request. You may email Administration (FAA), DOT.
failure of CT blades, which could lead to your request to: ANE-AD-AMOC@faa.gov. ACTION: Final rule; technical
damage to the engine and damage to the (h) Related Information amendment.
airplane.
(1) For more information about this AD, SUMMARY: This action amends Class D
(e) Compliance contact Barbara Caufield, Aerospace Airspace at Jupiter, FL, by removing
Comply with this AD within the Engineer, Engine Certification Office, FAA,
reference to Restricted Area R–2936 in
compliance times specified, unless already Engine & Propeller Directorate, 12 New
done. England Executive Park, Burlington, MA the regulatory text of the Class D
(1) For engines installed with CT blades 01803; phone: 781–238–7146; fax: 781–238– airspace area as the restricted area is no
other than P&WC single crystal CT blades, 7199; email: barbara.caufield@faa.gov. longer needed. This action also updates
part numbers (P/Ns) 3072791–01, 3072791– (2) P&WC SB No. PT6A–72–1727, dated the geographic coordinates of the
02, or 3079351–01, do the following: August 23, 2013, and SB No. PT6A–72–1749, airport.
(i) Until removed, per the requirements of dated September 23, 2014, which are not
DATES: Effective 0901 UTC, June 25,
this AD, borescope inspect the CT blade incorporated by reference in this AD, can be
leading and trailing edges, within the obtained from P&WC using the contact
2015. The Director of the Federal
following intervals, whichever occurs later: information in paragraph (i)(4) of this AD. Register approves this incorporation by
(A) 150 operating hours after October 8, reference action under title 1, Code of
2014; or (i) Material Incorporated by Reference Federal Regulations, part 51, subject to
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(B) 500 operating hours since new; or (1) The Director of the Federal Register the annual revision of FAA Order
(C) 500 operating hours since last approved the incorporation by reference 7400.9 and publication of conforming
borescope inspection (BSI) of the CT blades; (IBR) of the service information listed in this amendments.
or paragraph under 5 U.S.C. 552(a) and 1 CFR
(D) Before next flight after the effective part 51. ADDRESSES: FAA Order 7400.9Y,
date of this AD. (2) You must use this service information Airspace Designations and Reporting
(ii) Thereafter, repeat the inspection as applicable to do the actions required by Points, and subsequent amendments can
required by paragraph (e)(1)(i) of this AD this AD, unless the AD specifies otherwise. be viewed online at http://www.faa.gov/
VerDate Sep<11>2014 15:47 Apr 30, 2015 Jkt 235001 PO 00000 Frm 00015 Fmt 4700 Sfmt 4700 E:\FR\FM\01MYR1.SGM 01MYR1](https://thefederalregister.org/doc/80_FR_24875/page/3.svg)
Document Created: 2018-02-21 10:20:30
Document Modified: 2018-02-21 10:20:30
| 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 | Rules and Regulations | |
| Action | Final rule. | |
| Dates | This AD is effective June 5, 2015. | |
| Contact | Barbara Caufield, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7146; fax: 781-238-7199; email: [email protected] | |
| FR Citation | 80 FR 24791 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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