Airworthiness directives › 2012-05-06
AD 2012-05-06 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
All 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.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
This maintenance program revision is retained from AD 95-20-04 R1, Amendment 39-9454 (60 FR 63414, December 11, 1995): For Model L-1011-385-1, L-1011-385-1-14, and L-1011-385-1-15 airplanes: Within 12 months after November 2, 1995 (the effective date of AD 95-20-04 R1, Amendment 39-9454 (60 FR 63414, December 11, 1995)), incorporate a revision into the maintenance inspection program which provides for inspection(s) of the structurally significant details (SSD) defined in Lockheed Document Number LG92ER0060, “L-1011-385 Series Supplemental Inspection Document,” revised January 1994. Doing the revision required by paragraph (h) of this AD terminates the requirement to revise the maintenance inspections program specified in this paragraph. Doing the inspections required by paragraph (i) of this AD terminates the corresponding inspection requirements of this paragraph. (1) The initial inspection for each SSD must be performed at the later of the times specified in paragraph (g)(1)(i) or (g)(1)(ii) of this AD. (i) Within one repeat interval measured from November 2, 1996 (12 months after November 2, 1995). (ii) Prior to the threshold specified in Lockheed Document Number LG92ER0060, “L-1011-385 Series Supplemental Inspection Document,” revised January 1994, for that SSD. (2) A 10 percent deviation from the repetitive interval specified in Lockheed Document Number LG92ER0060, “L-1011-385 Series Supplemental Inspection Document,” revised January 1994, for that SSD is acceptable to allow for planning and scheduling time. (3) If Lockheed Document Number LG92ER0060, “L-1011-385 Series Supplemental Inspection Document,” revised January 1994, specifies that inspection of any SSD be performed at every “C” check, those inspections must be performed at intervals not to exceed 5,000 hours time-in-service or 2,500 flight cycles, whichever occurs earlier. (4) If Lockheed Document Number LG92ER0060, “L-1011-385 Series Supplemental Inspection Document,” revised January 1994, specifies either the initial inspection or the repetitive inspection intervals for any SSD in terms of flight hours or flight cycles, the inspection shall be performed prior to the earlier of the terms (whichever occurs first on the airplane: either accumulated number of flight hours, or accumulated number of flight cycles). (5) The non-destructive inspection techniques referenced in Section VI., “Appendix,” of Lockheed Document Number LG92ER0060, “L-1011-385 Series Supplemental Inspection Document,” revised January 1994, provide acceptable methods for accomplishing the inspections required by paragraph (g) of this AD.
Unsafe condition
This AD was prompted by an evaluation by the manufacturer of usage and flight data that provided additional information about certain structurally significant details (SSDs) where fatigue damage is likely to occur. We are issuing this AD to prevent fatigue cracking that could compromise the structural integrity of these airplanes.
Affected ADs
This AD supersedes AD 95-20-04 R1, Amendment 39-9454 (60 FR 63414, December 11, 1995).
Read the original on the Federal Register →
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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