77-07-09 AVIONS MARCEL DASSAULT/BREGUET AVIATION (AMD/BA): Amendment 39-2867. Applies to Falcon 10 airplanes, certificated in all categories, equipped with Grumman tailpipe, P/N F10A5B10003-7, installed without back-up ring, P/N F10A5B10606-11.
Compliance is required as indicated, unless already accomplished.
To prevent the possible loss of the tailpipe, accomplish the following:
(a) For tailpipes having more than 750 hours time in service on the effective date of this AD, comply with paragraph (c) of this AD within 90 days or 150 hours time in service after the effective date of this AD, whichever occurs first.
(b) For tailpipes having 750 hours or less time in service on the effective date of this AD, comply with paragraph (c) of this AD prior to the accumulation of 900 hours total time in service.
(c) Replace tailpipe, P/N F10A5B10003-7, with a new part of the same part number, or with a serviceable part of improved design, P/N F10A5RDB20217-3, and in either case install with back-up ring P/N F10A5B10606-11.
(Falcon 10 Service Bulletin No. 0129, dated December 21, 1976, covers this subject.)
This amendment becomes effective April 18, 1977.