AD 80-19-04

80-19-04 LOCKHEED CALIFORNIA: Amendment 39-3909. Applies to Model L-1011-385- 1, -385-1-15, -385-3 airplanes, serial numbers listed below:

193G-1179, 193K-1024, 193K-1032, 193N-1083, 193N-1093, 193N-1094, 193N-1011, 193N-1102, 193N-1106, 193N-1132, 193N-1145, 193N-1146, 193N-1178, 193N-1182, 193V-1157, 193V-1159, 193V-1164, 193V-1165, 193V-1168, 193V-1174, 193W-1166, 193W-1172.

Compliance required as indicated, unless already accomplished.

To prevent fatigue damage to fuselage structure adjacent to C-3 cargo door accomplish the following:

(a) Within 100 hours' time in service from the effective date of this AD, inspect the airplane structure adjacent to aft side of the C-3 cargo door for the presence of intercostals P/N 1551612-131 and 1551612-119 in accordance with paragraph 2.A and 2.B of Lockheed Alert Service Bulletin 093-53-A190 dated August 1, 1980.

(b) If intercostals are missing, conduct a visual daily inspection of the aircraft adjacent structurein accordance with paragraph 2.C and 2.D of Lockheed Alert Service Bulletin 093-53-A190 dated August 1, 1980 until intercostals are installed.

(c) If cracks are found during inspection per paragraph (b) above, repair in a manner approved by Chief, Aircraft Engineering Division, FAA Western Region.

(d) Install intercostals P/N 1551612-131 and -119 within the next 800 flights from the effective date of this AD in accordance with paragraph 2.A of Lockheed Service Bulletin 093-53- 190 dated August 8, 1980.

(e) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes unpressurized to a base for the accomplishment of repairs required by this AD.

(f) Alternative inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.

This amendment becomes effective September 15, 1980.