Airworthiness directives › 99-04-24
AD 99-04-24 Airworthiness Directives; Aerospatiale Model ATR72 Series Airplanes
Models named: ATR72-102, -201, -202, -212 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model ATR72-102, -201, -202, and -212 series airplanes; as listed in Avions de Transport Regional Service Bulletin ATR72-57-1019, dated July 7, 1997; certificated in any category. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
Compliance
Required as indicated, unless accomplished previously. To prevent failure of anchor nuts on the upper surface of the wings, which could result in reduced structural integrity of the airplane, accomplish the following: (a) Within 6 months after the effective date of this AD, inspect the anchor nuts, having part number (P/N) NAS1473A5, located on the upper surface of the wing to detect damage, in accordance with Avions de Transport Regional Service Bulletin ATR72-57-1019, dated July 7, 1997, or Revision 1, dated May 12, 1998. (1) If no damage is detected, no further action is required by this AD. (2) If any damage is detected, and the damage is within the allowable limits specified in the Accomplishment Instructions of the service bulletin, prior to the accumulation of an additional 4,000 flight cycles following the inspection, replace the damaged nut having P/N NAS1473A5 with a new or serviceable nut, in accordance with the Accomplishment Instructions of the service bulletin. (3) If any damage is detected, and the damage is outside the allowable limits specified in the Accomplishment Instructions of the service bulletin, prior to further flight, repair in accordance with a method approved by the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate; or the Direction Generale de l'Aviation Civile (or its delegated agent). (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, International Branch, ANM-116. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, International Branch, ANM-116. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the International Branch, ANM-116. (c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The actions shall be done in accordance with Avions de Transport Regional Service Bulletin ATR72-57-1019, dated July 7, 1997, or Avions de Transport Regional Service Bulletin ATR72-57- 1019, Revision 1, dated May 12, 1998, which contains the following list of effective pages: ------------------------------------------------------------------------ Revision level shown Page No. on page Date shown on page ------------------------------------------------------------------------ 1-7, 10, 12, 13, 17......... 1................... May 12, 1998. 8, 9, 11, 14-16............. Original............ July 7, 1997. ------------------------------------------------------------------------ This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Note 3: The subject of this AD is addressed in French airworthiness directive 97-264-034(B), dated September 24, 1997. [[Page 8714]] (e) This amendment becomes effective on March 30, 1999. Issued in Renton, Washington, on February 12, 1999. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 99-4217 Filed 2-22-99; 8:45 am] BILLING CODE 4910-13-U
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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