2017-17-10: Landing Gear

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) 2015-23-12, Amendment 39-18329 (80 FR 73096, November 24, 2015), and adding the following new AD: 2017-17-10 ATR-GIE Avions de Transport R gional: Amendment 39-19000; Docket No. FAA-2017-0516; Product Identifier 2016-NM-125- AD. (a) Effective Date This AD is effective September 29, 2017. (b) Affected ADs This AD replaces AD 2015-23-12, Amendment 39-18329 (80 FR 73096, November 24, 2015) (``AD 2015-23-12''). (c) Applicability This AD applies to ATR-GIE Avions de Transport R gional Model ATR42-200, -300, -320, and -500 airplanes; and ATR72-101, - 201, -102, -202, -211, -212, and -212A airplanes; certificated in any category; all certified models; all manufacturer serial numbers. (d) Subject Air Transport Association (ATA) of America Code 32, Landing Gear. (e) Reason This AD was prompted by a new occurrence of a cracked main landing gear (MLG) rear hinge pin. We are issuing this AD to detect and correct cracked rear hinge pins, which could lead to MLG structural failure, possibly resulting in collapse of the MLG and consequent injury to the occupants of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Hinge Pin Identification and Replacement for Model ATR72 Airplanes, With Terminating Action This paragraph restates the requirements of paragraph (g) of AD 2015-23-12, with terminating action. For Model ATR72 airplanes: Within 12 months after December 29, 2015 (the effective date of AD 2015-23-12), inspect forthe serial number of the left-hand (LH) and right-hand (RH) MLG rear hinge pins having part number (P/N) D61000. A review of airplane maintenance records is acceptable in lieu of this identification if the part number and serial number of the LH and RH MLG rear hinge pins can be conclusively determined from that review. If a rear hinge pin having P/N D61000 has a serial number listed in Messier-Bugatti-Dowty Service Bulletin 631-32-213, dated December 16, 2013; or Messier-Bugatti-Dowty Service Bulletin 631-32- 216, Revision 1, dated December 17, 2013; as applicable: Within 12 months after December 29, 2015, replace the pin with a serviceable part as identified in paragraph (h) of this AD, in accordance with the Accomplishment Instructions of Messier-Bugatti-Dowty Service Bulletin 631-32-213, dated December 16, 2013; or Messier-Bugatti- Dowty Service Bulletin 631-32-216, Revision 1, dated December 17, 2013; as applicable. Accomplishment of the actions required by paragraph (l) of this AD terminates the inspection required by this paragraph. Accomplishing the actions required by paragraph (m) or (o) of this AD terminates the actions required by this paragraph. (h) Retained Definition of Serviceable Hinge Pin for Model ATR72 Airplanes for Paragraph (g) of This AD, With No Changes This paragraph restates the definition in paragraph (h) of AD 2015-23-12, with no changes. For Model ATR72 airplanes: For purposes of paragraph (g) of this AD, a serviceable MLG rear hinge pin is a pin that is specified in paragraph (h)(1) or (h)(2) of this AD. (1) A hinge pin that is not identified in Messier-Bugatti-Dowty Service Bulletin 631-32-213, dated December 16, 2013; or Messier- Bugatti-Dowty Service Bulletin 631-32-216, Revision 1, dated December 17, 2013; as applicable. (2) A hinge pin that has been inspected and reconditioned, in accordance with the Accomplishment Instructions of Messier-Bugatti- Dowty Service Bulletin 631-32-213, dated December 16, 2013; or Messier-Bugatti-Dowty Service Bulletin 631-32-216, Revision 1, dated December 17, 2013; as applicable. [[Page 40482]] (i) Retained MLG Pin Identification and Replacement for Model ATR72 Airplanes, With Terminating Action This paragraph restates the requirements of paragraph (i) of AD 2015-23-12, with terminating action. For Model ATR72 airplanes: At the earlier of the times specified in paragraphs (i)(1) and (i)(2) of this AD, inspect all LH and RH MLG pins for a part number and serial number listed in Messier-Bugatti-Dowty Service Bulletin 631- 32-214, dated January 13, 2014; or Messier-Bugatti-Dowty Service Bulletin 631-32-219, dated March 3, 2014; as applicable. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number and serial number of the LH and RH MLG pin can be conclusively determined from that review. If any affected MLG pin is found: At the earlier of the compliance times specified in paragraphs (i)(1) and (i)(2) of thisAD, replace the MLG with a serviceable MLG as identified in paragraph (j) of this AD, using a method approved by the Manager, International Section, Transport Standards Branch, FAA; or the European Aviation Safety Agency (EASA); or ATR-GIE Avions de Transport R gional's EASA Design Organization Approval (DOA). Accomplishment of the actions required by paragraph (l) of this AD terminates the inspection for the part number and serial number of the LH and RH MLG rear hinge pins required by this paragraph. Accomplishment of the actions required by paragraph (m) or (o) of this AD terminates the actions required by this paragraph. (1) No later than the next MLG overhaul scheduled after December 29, 2015 (the effective date of AD 2015-23-12). (2) Within 20,000 flight cycles or 9 years, whichever occurs first, accumulated since installation of the MLG on an airplane since new or since last overhaul, as applicable. (j) Retained Definition of Serviceable MLG for Model ATR72 Airplanes for Paragraph (i) of This AD, With No Changes This paragraph restates the definition in paragraph (j) of AD 2015-23-12, with no changes. For Model ATR72 airplanes: For purposes of paragraph (i) of this AD, a serviceable MLG is one that incorporates pins specified in paragraph (j)(1) or (j)(2) of this AD. (1) Pins that are not identified in Messier-Bugatti-Dowty Service Bulletin 631-32-214, dated January 13, 2014; or Messier- Bugatti-Dowty Service Bulletin 631-32-219, dated March 3, 2014; as applicable. (2) Pins that have been inspected and reconditioned in accordance with the Accomplishment Instructions of Messier-Bugatti- Dowty Service Bulletin 631-32-214, dated January 13, 2014; or Messier-Bugatti-Dowty Service Bulletin 631-32-219, dated March 3, 2014; as applicable. (k) Retained MLG Pin Identification and Replacement for Model ATR42 Airplanes, With Terminating Action This paragraph restates the requirements of paragraph (k) of AD 2015-23-12, with terminating action. Accomplishment of the actions required by paragraph (l) of this AD terminates the actions required by paragraph (k)(1) of this AD. Accomplishment of the actions required by paragraph (m) or (o) of this AD terminates the actions required by paragraph (k)(2) of this AD. (1) For Model ATR42 airplanes: Within the compliance time identified in paragraph (k)(1)(i) or (k)(1)(ii) of this AD, whichever occurs first, inspect for any LH and RH MLG pins having a part number and serial number listed in Messier-Bugatti-Dowty Service Bulletin 631-32-215, dated January 13, 2014; or Messier- Bugatti-Dowty Service Bulletin 631-32-220, dated March 3, 2014; as applicable. A review of airplane maintenance records is acceptable in lieu of this identification if the part number and serial number of the LH and RH MLG pin can be conclusively determined from that review. (i) No later than the next MLG overhaul scheduled after December 29, 2015 (the effective date of AD 2015-23-12). (ii) Within 20,000 flight cycles or 9 years, whichever occurs first, accumulated since installation of the MLG on an airplane since new or since last overhaul, as applicable. (2) If the MLG pin having a part number and serial number listed in Messier-Bugatti-Dowty Service Bulletin 631-32-215, dated January 13, 2014; or Messier-Bugatti-Dowty Service Bulletin 631-32-220, dated March 3, 2014; as applicable; is found to be installed during the identification required by paragraph (k)(1) of this AD, within the compliance time identified in paragraph (k)(1) of this AD, replace the MLG with a serviceable MLG, using a method approved by the Manager, International Section, Transport Standards Branch, FAA; or the EASA; or ATR-GIE Avions de Transport R gional's EASA DOA. For the purposes of this paragraph, a serviceable MLG is a part that has pins identified in paragraph (k)(2)(i) or (k)(2)(ii) of this AD. (i) Pins that are not listed in Messier-Bugatti-Dowty Service Bulletin 631-32-215, dated January 13, 2014; or Messier-Bugatti- Dowty Service Bulletin 631-32-220, dated March 3, 2014; as applicable. (ii) Pins that have been inspected and reconditioned, in accordance with the Accomplishment Instructions of Messier-Bugatti- Dowty Service Bulletin 631-32-215, dated January 13, 2014; or Messier-Bugatti-Dowty Service Bulletin 631-32-220, dated March 3, 2014; as applicable. (l) New Requirement of This AD: Hinge Pin Identification Within the applicable compliance time specified in, and in accordance with the Accomplishment Instructions of, the applicable Messier-Bugatti-Dowty Service Bulletin specified in figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l) through (p) of this AD, as applicable to the airplane model and MLG hinge part number, identify the serial number (S/N) of the LH and RH MLG hinge pins. A review of airplane maintenance records is acceptable in lieu of this identification if the part number and serial number of the LH and RH MLGhinge pins can be conclusively determined from that review. Accomplishment of the actions required by this paragraph terminates the inspections required by paragraphs (g), (i), and (k)(1) of this AD. Figure 1 to Paragraphs (l) Through (p) of This AD--Model ATR72 Airplanes ------------------------------------------------------------------------ Applicable Messier- MLG hinge part Nos. Bugatti-Dowty Compliance time service bulletins ------------------------------------------------------------------------ D60955, D60968, D60999, Messier-Bugatti- A or B, whichever D61032, D61061. Dowty Service occurs first: Bulletin A: Not later than 631[dash]32-214, the next scheduled Revision 1, dated MLG overhaul after March 15, 2016, the effective date Messier-Bugatti- of this AD. Dowty Service B: Within 20,000 Bulletin flight cycles or 9 631[dash]32-219, years, whichever Revision 1, dated occurs first, March 15, 2016, or. accumulated since Messier-Bugatti- first installation Dowty Service of a MLG on an Bulletin airplane since new, 631[dash]32-233, or since last dated March 15, overhaul, as 2016.. applicable. D61000...................... Messier-Bugatti- Within 12 months Dowty Service after the effective Bulletin date of this AD. 631[dash]32-213, Revision 2, dated March 15, 2016, Messier-Bugatti- Dowty Service Bulletin 631[dash]32-216, Revision 3, dated March 15, 2016, or Messier-Bugatti- Dowty Service Bulletin 631[dash]32-232, Revision 1, dated March 15, 2016. ------------------------------------------------------------------------ [[Page 40483]] Figure 2 to Paragraphs (l) Through (p) of This AD--Model ATR42 Airplanes ---------------------------------------------------------------------------------------------------------------- Applicable Messier-Bugatti- MLG hinge part Nos. Airplane model(s) Dowty service bulletins Compliance time ---------------------------------------------------------------------------------------------------------------- D62054, D63823, D63825............ All.................. Messier-Bugatti-Dowty A or B, whichever occurs Service Bulletin first: 631[dash]32[dash]215, A: Not later than the Revision 1, dated March next scheduled MLG 15, 2016, overhaul after the effective date of this AD. Messier-Bugatti-Dowty B: Within 20,000 flight Service Bulletin cycles or 9 years, 631[dash]32[dash]220, whichever occurs first, Revision 1, dated March accumulated since first 15, 2016, or installation of a MLG on Messier-Bugatti-Dowty an airplane since new, Service Bulletinor since last overhaul, 631[dash]32[dash]235, as applicable. dated March 15, 2016.. D56800, D56800-1, D56809, D56841, ATR42-300............ Messier-Bugatti-Dowty A or B, whichever occurs D57261, D57401, D57407, D58807, Service Bulletin first: D62079. 631[dash]32[dash]215, A: Not later than the Revision 1, dated March next scheduled MLG 15, 2016, overhaul after the Messier-Bugatti-Dowty effective date of this Service Bulletin AD. 631[dash]32[dash]220, B: Within 20,000 flight Revision 1, dated March cycles or 9 years, 15, 2016, or. whichever occurs first, Messier-Bugatti-Dowty accumulated since first Service Bulletin installation of a MLG on 631[dash]32[dash]235, an airplane since new, dated March 15, 2016.. or since last overhaul, as applicable. D62055............................ All.................. Messier-Bugatti-Dowty Within 24 months after Service Bulletin the effective date of 631[dash]32[dash]224, this AD. dated March 15, 2016, Messier-Bugatti-Dowty Service Bulletin 631[dash]32[dash]231, dated March 15, 2016, or Messier-Bugatti-Dowty Service Bulletin 631-32- 234, dated March 15, 2016. ---------------------------------------------------------------------------------------------------------------- (m) New MLG Hinge Pin Replacement If, during the identification required by paragraph (l) of this AD, an MLG hinge pin with a serial number listed in the applicable Messier-Bugatti-Dowty Service Bulletin is found to be installed: Within the compliance time specified in figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l) through (p) of this AD, as applicable to airplane model and MLG hinge pin part number, replace eachaffected MLG hinge pin with a serviceable MLG hinge pin. The replacement must be done in accordance with the Accomplishment Instructions of the applicable Messier-Bugatti-Dowty Service Bulletin specified in figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l) through (p) of this AD, as applicable to the airplane model and MLG hinge part number, except as required by paragraph (o) of this AD. Accomplishment of the actions required by this paragraph terminates the actions required by paragraphs (g) and (i) of this AD. Accomplishment of the actions required by this paragraph terminates the replacement required by paragraph (k)(2) of this AD. (n) New Definition of Serviceable Hinge Pins for Paragraph (m) of This AD For the purpose of paragraph (m) of this AD, a serviceable MLG hinge pin is a pin that is specified in paragraph (n)(1) or (n)(2) of this AD. (1) A hinge pin that does not belong to the identified batch as listed in the applicable Messier-Bugatti-Dowty Service Bulletin specified in figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l) through (p) of this AD, as applicable to the airplane model and MLG hinge part number. (2) A hinge pin that can be identified, through the MLG maintenance records, as having been inspected and reconditioned in accordance with the Accomplishment Instructions of the applicable Messier-Bugatti-Dowty Service Bulletin specified in figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l) through (p) of this AD, as applicable to the airplane model and MLG hinge part number. (o) New MLG Hinge Pin Replacement Procedures If, during accomplishment of the MLG hinge pin replacement required by paragraph (m) of this AD, the applicable Messier- Bugatti-Dowty Service Bulletin specified in figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l) through (p) of this AD, does not specify the MLG hinge pin replacementprocedure, do the MLG hinge pin replacement using a method approved by the Manager, International Section, Transport Standards Branch, FAA; or the EASA; or ATR--GIE Avions de Transport R gional's EASA DOA. Do the MLG hinge pin replacement at the applicable compliance time specified in paragraph (m) of this AD. Accomplishment of the actions required by this paragraph terminates the hinge pin replacement required by paragraphs (g), (i), and (k)(2) of this AD. (p) New Parts Installation Limitation As of the effective date of this AD, no person may install on any airplane an MLG hinge pin having a part number identified in figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l) through (p) of this AD, and having a serial number defined in the applicable Messier-Bugatti-Dowty Service Bulletin specified in figure 1 to paragraphs (l) through (p) of this AD, or figure 2 to paragraphs (l) through (p) of this AD, as applicable to the airplane model and MLG hinge part number, unless the part can be conclusively identified, through the MLG maintenance records, as having been inspected and reconditioned in accordance with the Accomplishment Instructions of the applicable Messier-Bugatti-Dowty Service Bulletin. (q) Credit for Previous Actions (1) This paragraph restates the credit provided in paragraph (l) of AD 2015-23-12, with no changes. This paragraph provides credit for the actions required by paragraph (g) of this AD, if those actions were performed before December 29, 2015 (the effective date of AD 2105-23-12), using Messier-Bugatti-Dowty Service Bulletin 631- 32-216, dated October 30, 2013, which is not incorporated by reference in this AD. (2) This paragraph provides credit for the actions required by paragraphs (l) and (m) of this AD, if those actions were done before the effective date of this AD using the applicable service information specified in paragraph (q)(2)(i) through (q)(2)(x) of this AD. (i) Messier-Bugatti-Dowty Service Bulletin 631-32-213, December 16, 2013, which was incorporated by reference on December 29, 2015 (80 FR 73096, November 24, 2015). (ii) Messier-Bugatti-Dowty Service Bulletin 631-32-213, Revision 1, dated December 8, 2014, which is not incorporated by reference in this AD. (iii) Messier-Bugatti-Dowty Service Bulletin 631-32-214, dated January 13, 2014, which was incorporated by reference on December 29, 2015 (80 FR 73096, November 24, 2015). (iv) Messier-Bugatti-Dowty Service Bulletin 631-32-215, dated January 13, 2014, which was incorporated by reference on December 29, 2015 (80 FR 73096, November 24, 2015). (v) Messier-Bugatti-Dowty Service Bulletin 631-32-216, dated October 30, 2013, which is not incorporated by reference in this AD. (vi) Messier-Bugatti-Dowty Service Bulletin 631-32-216, Revision 1, dated December 17, 201, which was incorporated by reference on December 29, 2015 (80 FR 73096, November 24, 2015). (vii) Messier-Bugatti-Dowty ServiceBulletin 631-32-216, Revision 2, dated December 8, 2014, which is not incorporated by reference in this AD. [[Page 40484]] (viii) Messier-Bugatti-Dowty Service Bulletin 631-32-219, dated March 3, 2014, which was incorporated by reference on December 29, 2015 (80 FR 73096, November 24, 2015). (ix) Messier-Bugatti-Dowty Service Bulletin 631-32-220, dated March 3, 2014, which was incorporated by reference on December 29, 2015 (80 FR 73096, November 24, 2015). (x) Messier-Bugatti-Dowty Service Bulletin 631-32-232, dated December 8, 2014, which is not incorporated by reference in this AD. (r) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, International Section, Transport Standards Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector orlocal Flight Standards District Office, as appropriate. If sending information directly to the manager of the International Branch, send it to the attention of the person identified in paragraph (s)(2) of this AD. Information may be emailed to: [email protected]. (i) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (ii) AMOCs approved previously for AD 2015-23-12 are approved as AMOCs for the corresponding provisions of this AD. (2) Contacting the Manufacturer: As of the effective date of this AD, for any requirement in this AD to obtain corrective actions from a manufacturer, the action must be accomplished using a method approved by the Manager, International Section, Transport Standards Branch, FAA; or the EASA; or ATR--GIE Avions de Transport R gional's EASA DOA. If approved by the DOA, the approval mustinclude the DOA-authorized signature. (s) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) EASA Airworthiness Directive 2016-0135, dated July 8, 2016, for related information. This MCAI may be found in the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-0516. (2) For more information about this AD, contact Shahram Daneshmandi, Aerospace Engineer, International Section, Transport Standards Branch, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1112; fax 425-227-1149. (3) Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs (t)(5) and (t)(6) of this AD. (t) 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 part51. (2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise. (3) The following service information was approved for IBR on September 29, 2017. (i) Messier-Bugatti-Dowty Service Bulletin 631-32-213, Revision 2, dated March 15, 2016. (ii) Messier-Bugatti-Dowty Service Bulletin 631-32-214, Revision 1, dated March 15, 2016. (iii) Messier-Bugatti-Dowty Service Bulletin 631-32-215, Revision 1, dated March 15, 2016. (iv) Messier-Bugatti-Dowty Service Bulletin 631-32-216, Revision 3, dated March 15, 2016. (v) Messier-Bugatti-Dowty Service Bulletin 631-32-219, Revision 1, dated March 15, 2016. (vi) Messier-Bugatti-Dowty Service Bulletin 631-32-220, Revision 1, dated March 15, 2016. (vii) Messier-Bugatti-Dowty Service Bulletin 631-32-224, dated March 15, 2016. (viii) Messier-Bugatti-Dowty Service Bulletin 631-32-231, dated March 15, 2016. (ix) Messier-Bugatti-Dowty Service Bulletin 631-32-232, Revision 1, dated March 15, 2016. (x) Messier-Bugatti-Dowty Service Bulletin 631-32-233, dated March 15, 2016. (xi) Messier-Bugatti-Dowty Service Bulletin 631-32-234, dated March 15, 2016. (xii) Messier-Bugatti-Dowty Service Bulletin 631-32-235, dated March 15, 2016. (4) The following service information was approved for IBR on December 29, 2015 (80 FR 73096, November 24, 2015). (i) Messier-Bugatti-Dowty Service Bulletin 631-32-213, dated December 16, 2013. (ii) Messier-Bugatti-Dowty Service Bulletin 631-32-214, dated January 13, 2014. (iii) Messier-Bugatti-Dowty Service Bulletin 631-32-215, dated January 13, 2014. (iv) Messier-Bugatti-Dowty Service Bulletin 631-32-216, Revision 1, dated December 17, 2013. Pages 4, 5, and 8 of this service bulletin are the original issue and are dated October 30, 2013. (v) Messier-Bugatti-Dowty Service Bulletin 631-32-219, dated March 3, 2014. (vi) Messier-Bugatti-Dowty Service Bulletin 631-32-220, dated March 3, 2014.(5) For service information identified in this AD, contact ATR- GIE Avions de Transport R gional, 1, All e Pierre Nadot, 31712 Blagnac Cedex, France; telephone +33 (0) 5 62 21 62 21; fax +33 (0) 5 62 21 67 18; email [email protected]; Internet http://www.aerochain.com. (6) You may view this service information at the FAA, Transport Standards Branch, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. (7) 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.