AD 81-12-02

81-12-02 LOCKHEED: Amendment 39-4127. Applies to Model 382 series airplanes, Serial Numbers 3946 and 4101 through 4871 except 4834, 4839, 4850, and 4853, certificated in all categories.

Compliance required during the next "B" or "C" inspection/check, whichever occurs first after the effective date of this AD, unless already accomplished. To prevent possible failure of the longerons, accomplish the following:

a. Inspect the center fuselage upper longeron splice bolts, immediately aft of fuselage station 597.00, along buttock line 20.00, on each side of the airplane, for correct installation, and determine the condition category of the airplane in accordance with Lockheed-Georgia Company Service Bulletin No. A382-53-29, Revision 1, dated April 24, 1981, or later FAA approved revision.

b. If an out-of-tolerance condition is found to exist, accomplish one of the following:

1. Based on the condition category, placard the airplane in accordance with Lockheed-GeorgiaCompany Service Bulletin No. A382-53-29, Revision 1, dated April 24, 1981, or later FAA approved revision, and incorporate Airplane Flight Manual (AFM) Supplement No. 382-11, dated February 18, 1981. The AFM Supplement may be obtained from the Lockheed- Georgia Company, Marietta, Georgia 30063. If repairs are accomplished in accordance with b.2., placards and AFM Supplement may be discarded.

2. Repair the airplane in accordance with Lockheed-Georgia Company Service Bulletin No. A382-53-29, Revision 1, dated April 24, 1981, or later FAA approved revision, or an alternate method of compliance, approved by the Chief, Engineering and Manufacturing Branch, Southern Region.

c. An alternate method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Southern Region.

d. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

This amendment becomes effective June 5, 1981.