Airworthiness directives › 2018-25-18
AD 2018-25-18 Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Models named: ATR42-200, -300, -320, -500, ATR72-101, -102, -201, -202, -211, -212. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to ATR-GIE Avions de Transport Régional Model ATR42-200, -300, -320, and -500 airplanes; and Model ATR72-101, -102, -201, -202, -211, -212, and -212A airplanes; certificated in any category; all manufacturer serial numbers.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For the purposes of this AD, an affected U-joint is any U-joint identified by part number (P/N) and serial number listed in the applicable service bulletin specified in paragraph (g)(1)(i), (g)(1)(ii), or (g)(1)(iii) of this AD. (i) For Model ATR42-200, -300, and -320 airplanes: Safran Landing Systems Service Bulletin 631-32-249, Revision 2, dated February 13, 2018. (ii) For Model ATR42-500 airplanes: Safran Landing Systems Service Bulletin 631-32-250, Revision 2, dated February 13, 2018. (iii) For Model ATR72-101, -102, -201, -202, -211, -212, and -212A airplanes: Safran Landing Systems Service Bulletin 631-32-251, Revision 2, dated February 13, 2018. (2) For the purposes of this AD, a serviceable part is an affected U-joint, as defined in paragraph (g)(1) of this AD, released to service by Safran Landing Systems, free of defect, with the letter “V” added on the part (on the identification plate, or in the vicinity of the P/N marking); or any other U-joint with chrome-plated faces that were never stripped or repaired; or any other U-joint with chrome-plated faces that were stripped and repaired as specified in the applicable component maintenance manual (CMM) identified in paragraph (g)(2)(i), (g)(2)(ii), or (g)(2)(iii). (i) For Model ATR42-200, -300, and -320 airplanes: Safran Landing Systems CMM 32-18-28, Rev. 10, or Safran Landing Systems CMM 32-18-30, Rev. 8, both dated June 2, 2017. (ii) For Model ATR42-500 airplanes: Safran Landing Systems CMM 32-18-45, Rev. 5, or Safran Landing Systems CMM 32-18-63, Rev. 6, both dated June 2, 2017. (iii) For Model ATR72-101, -102, -201, -202, -211, -212, and -212A airplanes: Safran Landing Systems CMM 32-18-34, Rev. 9, dated June 2, 2017.
Unsafe condition
This AD was prompted by reports of cracking in certain main landing gear (MLG) universal joints (U-joints). We are issuing this AD to address cracking in MLG U-joints, which could lead to MLG structural failure and subsequent collapse of the MLG, possibly resulting in damage to the airplane and injury to the occupants.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1