AD 74-26-06

74-26-06 LOCKHEED-CALIFORNIA: Amendment 39-2049 as amended by Amendment 39-2104. Applies to all L-1011-385-1 Series Airplanes certificated in all categories, incorporating Engine Shutoff Control Panel Assemblies, P/N 1520324 or P/N 1580810, all configurations.

Compliance required as indicated, unless already accomplished.

To provide protection in the event of an unknown incipient failure condition in the housing of the fire pull handle assembly, P/N 1520324 or P/N 1580810, accomplish the following:

(1) Within 600 hours time in service after the effective date of this AD, as amended,

(a) Modify the Control Panel Assembly, P/N 1520324 or P/N 1580810, in accordance with Part 2 of Lockheed Service Bulletin 093-26-010, dated November 21, 1974, revised February 11, 1975 or later FAA-approved revisions.

(b) Re-identify all modified Control Panel Assemblies in accordance with Part 3B of Lockheed Service Bulletin 093-26-010, dated November 21, 1974, revised February 11,1975, or later FAA-approved revisions.

(2) Equivalent repairs or modifications may be approved by the Chief, Aircraft Engineering Division, FAA Western Region, upon submission of adequate substantiating data.

Note: Those engine shutoff control panel assemblies marked as P/N 1604009 or P/N 1605009 are in compliance with this AD.

Amendment 39-2049 was effective December 23, 1974.

This amendment 39-2104 to AD 74-26-06 becomes effective March 4, 1975.