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ADs updated daily at www.Tdata.com
LEONARDO S.P.A. (TYPE CERTIFICATE PREVIOUSLY HELD BY
FINMECCANICA S.P.A, AGUSTAWESTLAND S.P.A.):
Amendment 39-19661; Docket No. FAA-2018-0737; Product Identifier 2017-SW-096-AD.
(a) APPLICABILITY This AD applies to Model AW139 helicopters, serial numbers 31499, 31504, 31507, 31509, 31512, 31518, 31519, 31524, 31529, 31533, 31535 through 31564, 31567, 31569, 31570, 31589, 41363, 41368 through 41370, 41372 through 41375, 41378, 41381, and 41384, with a tunnel assembly part number (P/N) 3G7130A13431 installed, certificated in any category. (b) UNSAFE CONDITION This AD defines the unsafe condition as a crack in a tail rotor drive- shaft. This condition could result in failure of the tail rotor drive system and subsequent loss of control of the helicopter. (c) EFFECTIVE DATE This AD becomes effective July 30, 2019. (d) COMPLIANCE You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time. (e) REQUIRED ACTIONS (1) Within 30 hours time-in-service (TIS) and thereafter at intervals not to exceed 100 hours TIS, inspect the number 1 driveshaft tube shaft, P/N 3G6510A00832, for a scratch and indentation in the area depicted in Figure 1 of Leonardo Helicopters Bollettino Tecnico No. 139-465, Revision A, dated January 25, 2017 (BT 139-465). If there is a scratch or indentation, before further flight: (i) Repair the tube shaft in accordance with the Compliance Instructions, Part I, paragraphs 7.1 through 7.3, of BT 139-465. (ii) Measure the depth of the repaired areas as depicted in Figure 2 of BT 139-465. (A) If the depth of the reworked area is 0.2 mm (0.079 inch) or less, eddy -current inspect the driveshaft for a crack as described in the Compliance Instructions, Annex A, of BT 139-465. If there is a crack, before further flight, replace the driveshaft, alter the rear exhaust module, and alter and re-identify the tunnel assembly in accordance with the Compliance Instructions, Part II, paragraphs 7 through 12, of BT 139-465. (B) If the depth of the reworked area is more than 0.2 mm (0.079 inch), before further flight, replace the driveshaft, alter the rear exhaust module, and alter and re-identify the tunnel assembly in accordance with the Compliance Instructions, Part II, paragraphs 7 through 12, of BT 139-465. (2) Within 300 hours TIS, unless already accomplished as required by para- graph (e)(1)(ii) of this AD, alter the rear exhaust module and alter and re-identify the tunnel assembly in accordance with the Compliance Instructions, Part II, paragraphs 7 through 12, of BT 139-465. (f) SPECIAL FLIGHT PERMITS Special flight permits are prohibited. (g) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS) (1) The Manager, Safety Management Section, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: David Hatfield, Aviation Safety Engineer, Safety Management Section, Rotor- craft Standards Branch, FAA, 10101 Hillwood Pkwy, Fort Worth, TX 76177 telephone (817) 222-5110; email 9-ASW-FTW-AMOC-Requests@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC. (h) ADDITIONAL INFORMATION The subject of this AD is addressed in European Aviation Safety Agency (EASA) AD No. 2017-0011, dated January 25, 2017. You may view the EASA AD on the internet at http://www.regulations.gov in Docket No. FAA- 2018-0737. (i) SUBJECT Joint Aircraft Service Component (JASC) Code: 6510 Tail Rotor Drive- shaft. (j) MATERIAL INCORPORATED BY REFERENCE (1) The Director of the Federal Register approved the incorporation by reference 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) Leonardo Helicopters Bollettino Tecnico No. 139-465, Revision A, dated January 25, 2017. (ii) [Reserved] (3) For Leonardo S.p.A. Helicopters service information identified in this AD, contact Leonardo S.p.A. Helicopters, Matteo Ragazzi, Head of Air- worthiness, Viale G. Agusta 520, 21017 C. Costa di Samarate (Va) Italy telephone +39-0331-711756; fax +39-0331-229046; or at https://www. leonardocompany.com/en/home. (4) You may view this service information at FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call (817) 222-5110. (5) You may view this service information that is incorporated by reference 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 Fort Worth, Texas on June 13, 2019. James A Grigg, Acting Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service. FOR FURTHER INFORMATION CONTACT: David Hatfield, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hill- wood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; email david. email@example.com.
DEPARTMENT OF TRANSPORTATION