87-04-12 AIRBUS INDUSTRIE: Amendment 39-5536. Applies to Model A300 B2 and B4 series airplanes, serial numbers as listed in each applicable service bulletin, certificated in any category. To prevent propagation of cracks in fuselage frame 47, accomplish the following within the time period specified in each of the following paragraphs after the effective date of this AD, or prior to reaching the threshold number of landings indicated in each paragraph below, whichever occurs later, unless previously accomplished:
A. FOR B2 SERIES AIRPLANES:
1. Prior to the accumulation of 6,000 landings, or within the next 300 landings after the effective date of this AD, whichever occurs later, inspect fastener holes A and B of frame 47, lefthand and righthand, in accordance with the accomplishment instructions of Airbus Industrie (AI) Service Bulletin A300-53-194, Revision 2, dated July 8, 1985. Repair cracks in accordance with the service bulletin. If no cracks are found, cold work the holes and install interference fit fasteners in accordance with the service bulletin.
2. Reinspect in accordance with AI Service Bulletin A300-53-196, dated February 4, 1985, at intervals not to exceed 6,000 landings.
3. Accomplishment of the modifications described in AI Service Bulletin A300-53-198, Revision 1, dated November 12, 1985, constitutes terminating action for the inspection requirements of paragraphs A.1. and A.2., above.
B. FOR B2 SERIES AIRPLANES:
1. Prior to the accumulation of 5,000 landings, or within the next 300 landings after the effective date of this AD, whichever occurs later, inspect frame 47, lefthand and righthand, in accordance with the accomplishment instructions of AI Service Bulletin A300-53- 193, dated March 14, 1984.
2. If cracks are found, repair in accordance with the service bulletin.
3. If no cracks are found, further inspections are not required.
C. FOR B4 SERIES AIRPLANES:
1. Prior to the accumulation of 7,000 landings or within the next 1,000 landings after the effective date of this AD, whichever occurs later, inspect frame 47, lefthand and righthand, fastener holes in accordance with AI Service Bulletin A300-53-200, Revision 2, dated February 6, 1986.
2. If cracks are found, repair in accordance with the service bulletin.
3. If no cracks are found, reinspect at intervals not to exceed 2,000 landings.
4. Accomplishment of the inspection and modification described in AI Service Bulletin A300-53-199, Revision 2, dated February 6, 1986, constitutes terminating action for the inspection requirements of paragraphs C.1. and C.2., above.
D. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
E. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.
All persons affected by this directive, who have not already received the appropriate service documents from the manufacturer, may obtain copies upon request to Airbus Industrie, Airbus Support Division, Avenue Didier Daurat, 31700 Blagnac, France. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.
This Amendment becomes effective March 9, 1987.