AD 2000-10-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed | L-1011-385 | Airworthiness Directives; Lockheed Model L-1011-385 Series Airplanes |
Unsafe Condition
Fatigue cracks found in the fuselage skin where the skin thickness steps from 0.40 to 0.23 inch, which could result in reduced structural integrity of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform an ultrasonic inspection on the fuselage skin in the area of the stringerless sidewall window belts, at the radii on both the forward and aft sides of the machined cutout where the fuselage skin steps from 0.40 to 0.23 inch, to detect cracking in the base of the radii. Depending on the inspection results, perform low frequency eddy current (LFEC) inspections and repairs as specified in Lockheed Service Bulletin 093-53-279.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 600 flight cycles or 6 months after the effective date of this AD, whichever occurs first.
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Affected Aircraft
All Lockheed Model L-1011-385 series airplanes, as listed in Lockheed Service Bulletin 093-53-279, dated May 6, 1998; certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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