AD 68-23-02

68-23-02 BOEING: Amendment 39-678. Applies to Model 707 and 720 Series aircraft listed in Boeing Service Bulletin 2399, Revision 8.

Compliance required as indicated unless already accomplished.

(1) Inspect the fin-body terminal fittings, P/N 5-84487, on all airplanes listed in the Airplanes Affected section of Boeing Service Bulletin No. 2399, Revision 8, or later FAA approved revision. Perform inspections in accordance with Accomplishment Instructions, Parts I and II, and perform preventative modifications in accordance with Part V of that Service Bulletin within the times listed in Inspection Schedules I, II, and III of that Service Bulletin. The repetitive inspection schedule in Inspection Schedule I can be disregarded if fittings with 3500- 7000 hours time in service are found by inspection to be uncracked and are reworked in accordance with Part IV of the Service Bulletin.

(2) Rework cracked fittings in accordance with Part III of Service Bulletin No. 2399, Revision 8, or later FAA-approved revision; or replace with a new part of the same part number; or install a new terminal fitting and bulkhead assembly in accordance with Boeing Service Bulletin No. 2422, or later FAA-approved revision, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region.

(3) Replace each fitting with a new part of the same part number within the times listed in Inspection Schedule III of Service Bulletin No. 2399, Revision 8, or later FAA-approved revision; or install a new terminal fitting and bulkhead assembly in accordance with Boeing Service Bulletin No. 2422 or after FAA-approved revision, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region.

This AD supersedes AD 66-16-01, Amendment 39-253, published in the Federal Register June 25, 1966, as amended by 39-295, as published in the Federal Register October 26, 1966.

This amendment becomes effective December 9, 1968.