Airworthiness directives › 2011-27-02
AD 2011-27-02 Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes
Models named: L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, and L-1011-385-3 airplanes, certificated in any category, serial numbers 1002 through 1250 inclusive.
Compliance
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Required actions
At the applicable time specified in paragraph (k) of this AD, do eddy current non-destructive inspections (NDI) and detailed inspections for cracking at the applicable zones specified in paragraph (g)(1) or (g)(2) of this AD, in accordance with the Accomplishment Instructions of Lockheed Service Bulletin 093-57-226, dated August 31, 2009. Repeat the inspections thereafter at the applicable interval specified in Table 1 of this AD. (1) For Model L-1011-385-1, L-1011-385-1-14, and L-1011-385-1-15 airplanes: Zones 1A through 1E, and Zone 1F. (2) For Model L-1011-385-3 airplanes: Zones 3A through 3E, and Zone 3F.
Unsafe condition
This AD results from a damage tolerance analysis conducted by the manufacturer indicating that fatigue cracking could occur in wing rear spar and upper surface zones. We are issuing this AD to detect and correct such fatigue cracking, which could result in cracking that grows large enough to reduce the wing strength below certificated requirements and possibly cause fracture of the rear spar, resulting in extensive damage to the wing and possible fuel leaks.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1