Airworthiness Directive · Amendment 39-19129 · Ice and rain protection
ATR-GIE Avions de Transport Régional Airplanes
This AD applies to ATR—GIE Avions de Transport Régional airplanes, certificated in any category, identified in paragraphs (c)(1) through (c)(6) of this AD.
Note 1 to the introductory text of paragraph (c) of this AD: In EASA AD 2013-0032, dated February 18, 2013, airplanes specified in paragraphs (c)(1) and (c)(2) of this AD are identified as Group 1 airplanes and airplanes specified in paragraphs (c)(3) through (c)(6) of this AD are identified as Group 2 airplanes.
(1) Model ATR42-500 airplanes: Manufacturer serial numbers (MSNs) 645, 653, 657, 659, 661, 663, and 665.
(2) Model ATR72-212A airplanes: MSNs 778, 994, 995, 996, 998, 999, 1000, and 1020.
(3) Model ATR42-300 airplanes: MSNs 348 and 415.
(4) Model ATR42-500 airplanes: MSNs 497, 501, and 514.
(5) Model ATR72-202 airplanes: MSNs 192, 411, 496, 508, and 509.
(6) Model ATR72-212A airplanes: MSNs 468, 568, 595, 662, 796, 920, 926, 950, 1024, 1025, 1028, 1029, 1031, 1032, 1033, 1034, 1035, 1036, 1037, 1039, and 1040.
We are adopting a new airworthiness directive (AD) for certain ATR-GIE Avions de Transport R[eacute]gional Model ATR42-300 and -500 airplanes and Model ATR72-202 and -212A airplanes. This AD requires identifying the serial number of the dual distributor valve (DDV), and replacement of affected DDVs. This AD was prompted by an investigation performed on a failed DDV that revealed a nonconformity of crimping on an internal valve. We are issuing this AD to address the unsafe condition on these products.
Within 6 months after the effective date of this AD, identify the serial number of the DDV as specified in paragraph (g)(1) or (g)(2) of this AD, as applicable. A review of airplane delivery or maintenance records is acceptable to make the identification as required by this paragraph, provided those records can be relied upon for that purpose, and the serial number of the DDV can be conclusively identified from that review.
(1) For airplanes identified in paragraphs (c)(1) and (c)(2) of this AD, identify the serial number of the engine DDV part number(P/N) B03AA1060, in accordance with the Accomplishment Instructions of ATR Service Bulletin ATR42-30-0081, Revision 02, dated March 26, 2013; or ATR72-30-1050, Revision 03, dated March 26, 2013; as applicable to airplane model.
(2) For airplanes identified in paragraphs (c)(3), (c)(4), (c)(5), and (c)(6) of this AD, identify the serial number of the wing and/or stabilizer DDV, P/N B03AA1031 or B03AA1040, in accordance with the Accomplishment Instructions of ATR Service Bulletin ATR42-30-0080, Revision 02, dated March 26, 2013; or ATR72-30-1049, Revision 03, dated March 26, 2013; as applicable to airplane model.
For purposes of this AD, a serviceable DDV is any DDV having a serial number listed in figure 1 to paragraphs (h) and (i) of this AD with a suffix “R” added to the serial number.
If, during the part identification required by paragraph (g) of this AD, any DDV identified in figure 1 to paragraphs (h) and (i) of this AD is found: At the applicable time specified in figure 2 to the introductory text of paragraph (i) of this AD, depending on the location and the number of DDV affected, and on whether the airplane is operated in icing conditions or under Extended Operations (ETOPS) rules, replace any affected DDV(s) with a new or serviceable DDV, in accordance with the Accomplishment Instructions of the applicable service information specified in paragraphs (i)(1) through (i)(4) of this AD.
(1) For airplanes identified in paragraphs (c)(3) and (c)(4) of this AD: ATR Service Bulletin ATR42-30-0080, Revision 02, dated March 26, 2013.
(2) For airplanes identified in paragraph (c)(1) of this AD: ATR Service Bulletin ATR42-30-0081, Revision 02, dated March 26, 2013.
(3) For airplanes identified in paragraphs (c)(5) and (c)(6) of this AD: ATR Service Bulletin ATR72-30-1049, Revision 03, dated March 26, 2013.
(4) For airplanes identified in paragraph (c)(2) of this AD: ATR Service Bulletin ATR72-30-1050, Revision 03, dated March 26, 2013.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
