Airworthiness directives › 2004-12-17
AD 2004-12-17 Airworthiness Directives; Boeing Model 757-200 Series Airplanes
Models named: 757-200 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model 757-200 series airplanes, line numbers 1 through 95 inclusive; certificated in any category.
Compliance
Required as indicated, unless accomplished previously. To prevent fatigue cracks from propagating in the intercostals, which could lead to the loss of a door in flight and subsequent rapid decompression, accomplish the following: Service Bulletin References (a) The term “service bulletin,” as used in this AD, means the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-53-0086, dated March 14, 2002. Initial Inspection (b) Prior to the accumulation of 12,000 total flight cycles, or within 3,000 flight cycles after the effective date of this AD, whichever occurs later: Perform a detailed inspection for cracks of the intercostals that back up the door stops and hinges at door 2 left and door 2 right, per Part I of the service bulletin. No Crack Findings: Repetitive Inspections (c) If no crack is found during the inspection required by paragraph (b) of this AD, before further flight, do a dye penetrant or eddy current inspection for cracks of the intercostals that back up the door stops and hinges at door 2 left and door 2 right, per Part I of the service bulletin. Repeat thereafter at intervals not to exceed 3,000 flight cycles, until the preventative modification specified in paragraph (g) of this AD or the replacement specified in paragraph (h) of this AD has been accomplished. Crack Findings: Modification/Replacement (d) If, during the inspections required by paragraph (b) and/or (c) of this AD, any intercostal for door stop 1, 4, 5, 6, upper hinge, or lower hinge has cracks, but not beyond the aft edge of the bend relief radius: Before further flight, do the preventative modification specified in paragraph (g) of this AD or the replacement specified in paragraph (h) of this AD. (e) If, during the inspections required by paragraph (b) and/or (c) of this AD, any intercostal for door stop 2 or 3 has cracks: Before further flight, do the replacement specified in paragraph (h) of this AD. (f) If, during the inspections required by paragraph (b) and/or (c) of this AD, any intercostal has cracks that extend beyond the aft edge of the bend relief radius: Before further flight, do the replacement specified in paragraph (h) of this AD. Terminating Actions (g) Do the preventative modification on the intercostal per Part II of the service bulletin. Accomplishment of the preventative modification on an intercostal per Part II of the service bulletin constitutes terminating action for the repetitive inspection requirements of this AD for the modified intercostal only. (h) Replace the intercostal with a new improved intercostal per Part III of the service bulletin. Accomplishment of the replacement of an intercostal with a new, improved intercostal per Part III of the service bulletin constitutes terminating action for the repetitive inspection requirements of this AD for the replaced intercostal only. Alternative Methods of Compliance (i) In accordance with 14 CFR 39.19, the Manager, Seattle Aircraft Certification Office, FAA, is authorized to approve alternative methods of compliance for this AD. Incorporation by Reference (j) The actions shall be done in accordance with Boeing Special Attention Service Bulletin 757-53-0086, dated March 14, 2002. 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 Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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/code_of_federal_regulations/ibr_locations.html. Effective Date (k) This amendment becomes effective on July 27, 2004. Issued in Renton, Washington, on June 9, 2004. Kalene C. Yanamura, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 04-13699 Filed 6-21-04; 8:45 am] BILLING CODE 4910-13-P
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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