2017-11-06: Turbine/ Turboprop Engine

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: [[Page 26982]] 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) 2014-05-32, Amendment 39-17804 (79 FR 17856, March 31, 2014), and adding the following new AD: 2017-11-06 Pratt & Whitney: Amendment 39-18905; Docket No. FAA-2013- 0740; Directorate Identifier 2013-NE-24-AD. (a) Effective Date This AD is effective July 18, 2017. (b) Affected ADs This AD replaces AD 2014-05-32, Amendment 39-17804 (79 FR 17856, March 31, 2014). (c) Applicability This AD applies to all Pratt & Whitney (PW) PW2037, PW2037D, PW2037M, PW2040, PW2040D, PW2043, PW2143, PW2643, and F117-PW-100 turbofan engines.(d) Subject Joint Aircraft System Component (JASC) Code 72, Turbine/ Turboprop Engine. (e) Unsafe Condition This AD was prompted by a rupture of the diffuser-to-high- pressure turbine (HPT) case flange. We are issuing this AD to prevent failure of the diffuser-to-HPT case flange, which could lead to uncontained engine failure and damage to the airplane. (f) Compliance Unless already done, comply with this AD within the compliance times specified. (1) For diffuser case, part number (P/N) 1B7461, serial numbers (S/Ns) DGGUAK1306 and DGGUAK1308, and HPT case, P/N 1B2440, S/N DKLBCS1032: (i) Within 100 flight cycles or 30 days after May 5, 2014, whichever is later, eddy current inspect the diffuser case and the HPT case M-flange. Use PW Service Bulletin (SB) No. PW2000 72-763, Revision No. 1, dated August 30, 2013, to do the inspection. (ii) Reserved. (2) For all diffuser and HPT cases, at the next piece-part opportunity and every piece-part opportunity thereafter, perform a high sensitivity fluorescent-penetrant inspection (FPI) of the entire diffuser case rear flange (M-flange) and boltholes, and the entire HPT case forward flange (M-flange) and boltholes. (3) For diffuser cases that have not incorporated PW SB PW2000- 72-364 or have incorporated either PW SB PW2000-72-700 or PW2000 Series Engine Manual, Repair-28, Task 72-41-01-300-028 (M-flange replacement), perform initial and repetitive eddy current inspections (ECIs) of the M-flange of the diffuser case in accordance with paragraph (f)(4) of this AD. (4) Use, as applicable, either the Accomplishment Instructions, ``For Engines Installed on the Aircraft,'' paragraphs 3.(I) through 3.(J), or the Accomplishment Instructions, ``For Engines Removed from the Aircraft,'' paragraphs 3.(D) through 3.(E), of PW Alert Service Bulletin (ASB) No. PW2000 A72-765, Revision No. 2, dated August 12, 2016 to do the ECI as follows: (i) Perform an initial inspection within the following period, whichever occurs later: (A) Within 5,500 cycles since new or since M-flange replacement, or (B) Within 2,500 cycles since last piece-part FPI inspection, or (C) Within 1,000 cycles from the effective date of this AD. (ii) If no crack indications are found, re-inspect within 2,500 cycles since last ECI or last piece-part FPI inspection, whichever occurs later. (iii) If bolthole ID crack indications are found, measure the length and determine the re-inspect interval in accordance with: (A) Paragraphs 5.(C) through 5.(D) of PW ASB No. PW2000 A72-765, Revision No. 2, dated August 12, 2016 ``For Engines Installed on the Aircraft''; or (B) Paragraphs 4.(C) through 4.(D) of PW ASB No. PW2000 A72-765, Revision No. 2, dated August 12, 2016, ``For Engines Removed from the Aircraft.'' (iv) Remove from service diffuser cases with bolthole ID cracks exceeding 0.170 inches. (g) Definition For the purpose of this AD, piece-part opportunity is defined aswhen the part is completely disassembled. (h) Credit for Previous Actions (1) You may take credit for the diffuser case and HPT case inspections required by paragraphs (f)(1) and (3) of this AD if you performed: (i) An ECI of the diffuser case and the HPT case M-flange using the Accomplishment Instructions of PW SB No. PW2000 72-763, Revision No. 1, dated August 30, 2013, or an earlier version; or (ii) a high sensitivity FPI of the diffuser case and the HPT case at a piece-part opportunity after January 1, 2010. (2) You may take credit for only the diffuser case inspections required by paragraphs (f)(1) and (3) of this AD if you performed an ECI of the M-flange using the Accomplishment Instructions of PW SB No. PW2000 A72-765, Revision No. 1, dated July 13, 2016, or an earlier version. (i) 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 makeyour request. You may email your request to: ANE-AD-AMOC@faa.gov. (j) Related Information For more information about this AD, contact Brian Kierstead, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7772; fax: 781-238-7199; email: brian.kierstead@faa.gov. (k) 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. (i) Pratt & Whitney (PW) Service Bulletin No. PW2000 72-763, Revision No. 1, dated August 30, 2013. (ii) PW Alert Service Bulletin No. PW2000 A72-765, Revision No. 2, dated August 12, 2016. (3) For PW service information identified in this AD, contact Pratt & Whitney,400 Main St., East Hartford, CT 06118; phone: 860- 565-0140; fax: 860-565-5442; email: HELP24@pw.utc.com. (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. (5) 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.