Airworthiness Directive · Amendment 39-16903 · Wings
Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes
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.
We are adopting a new airworthiness directive (AD) for certain 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. This AD was prompted by results from a damage tolerance analysis conducted by the manufacturer indicating that fatigue cracking could occur in wing rear spar and upper surface zones. This AD requires repetitive inspections for cracking of the wing rear spar and upper surface zones, and repair if necessary. 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.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
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.
Except as specified in paragraph (j) of this AD, if any cracking is detected during any inspection required by paragraph (g) of this AD: Before further flight, remove the fastener(s) at the suspect area, as defined in Lockheed Service Bulletin 093-57-226, dated August 31, 2009; and do a secondary eddy current inspection to detect cracking of fastener holes with suspected crack indications; in accordance with the Accomplishment Instructions of Lockheed Service Bulletin 093-57-226, dated August 31, 2009.
Except as specified in paragraph (j) of this AD, if a crack finding is confirmed by the inspection required by paragraph (h) of this AD and the cracking is within the allowable repair limits specified in Lockheed Martin Repair Drawing LCC-7622-369, Revision March 30, 1995: Before further flight, repair the cracking, in accordance with Lockheed Martin Repair Drawing LCC-7622-369, Revision March 30, 1995. If a crack finding confirmed by the inspection required by paragraph (h) of this AD is not within the allowable repair limits specified in Lockheed Martin Repair Drawing LCC-7622-369, Revision March 30, 1995: Before further flight, repair the cracking, in accordance with a method approved by the Manager, Atlanta Aircraft Certification Office (ACO), FAA. For a repair method to be approved by the Manager, Atlanta ACO, as required by this paragraph, the Manager's approval letter must specifically refer to this AD.
If any cracking is found during any inspection required by this AD, and Lockheed Service Bulletin 093-57-226, dated August 31, 2009; or Lockheed Martin Repair Drawing LCC-7622-369, Revision March 30, 1995; specifies contacting Lockheed for appropriate action: Before further flight, repair the cracking in accordance with a method approved by the Manager, Atlanta ACO, FAA. For a repair method to be approved by the Manager, Atlanta ACO, as required by this paragraph, the Manager's approval letter must specifically refer to this AD.
Do the inspections required by paragraph (g) of this AD at the applicable time specified in table 1 of this AD.
| Airplane models and zones | Compliance time (whichever occurs later) | Repetitive interval (not to exceed) | |
| L-1011-385-1 having accumulated fewer than 7,000 flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zones 1A through 1E; (Non-destructive Inspection (NDI)) | Within 7,000 flight cycles or 10 years after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215, whichever occurs first. | Within 1,000 flight cycles after the effective date of this AD | 1,100 flight cycles. |
| L-1011-385-1 having accumulated fewer than 7,000 flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zone 1F; (Detailed Inspection) | Within 7,000 flight cycles or 10 years after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215, whichever occurs first. | Within 90 flight cycles or 30 days after the effective date of this AD, whichever occurs later | 90 flight cycles. |
| L-1011-385-1 having accumulated 7,000 flight cycles or more flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zones 1A through 1E; (NDI) | Within 1,000 flight cycles or 12 months after the effective date of this AD, whichever occurs first | N/A | 1,100 flight cycles. |
| L-1011-385-1 having accumulated 7,000 flight cycles or more after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zone 1F; (Detailed Inspection) | Within 90 flight cycles after the effective date of this AD | Within 30 days after the effective date of this AD | 90 flight cycles. |
| L-1011-385-1-14 having accumulated fewer than 6,900 flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zones 1A through 1E; (NDI) | Within 6,900 flight cycles or 10 years after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215, whichever occurs first | Within 1,000 flight cycles after the effective date of this AD | 900 flight cycles. |
| L-1011-385-1-14 having accumulated fewer than 6,900 flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zone 1F; (Detailed Inspection) | Within 6,900 flight cycles or 10 years after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215, whichever occurs first | Within 90 flight cycles or 30 days after the effective date of this AD, whichever occurs later | 90 flight cycles. |
| L-1011-385-1-14 having accumulated 6,900 or more flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zones 1A through 1E; (NDI) | Within 1,000 flight cycles or 12 months after the effective date of this AD, whichever occurs first | N/A | 900 flight cycles. |
| L-1011-385-1-14 having accumulated 6,900 or more flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zone 1F; (Detailed Inspection) | Within 90 flight cycles after the effective date of this AD | Within 30 days after the effective date of this AD | 90 flight cycles. |
| L-1011-385-1-15 having accumulated fewer than 5,600 flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zones 1A through 1E; (NDI) | Within 5,600 flight cycles or 10 years after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215, whichever occurs first | Within 1,000 flight cycles after the effective date of this AD | 500 flight cycles. |
| L-1011-385-1-15 having accumulated fewer than 5,600 flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zone 1F; (Detailed Inspection) | Within 5,600 flight cycles or 10 years after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215, whichever occurs first | Within 60 flight cycles or 30 days after the effective date of this AD, whichever occurs later | 60 flight cycles. |
| L-1011-385-1-15 having accumulated 5,600 or more flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zones 1A through 1E; (NDI) | Within 1,000 flight cycles or 12 months after the effective date of this AD, whichever occurs first | N/A | 500 flight cycles. |
| L-1011-385-1-15 having accumulated 5,600 or more flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zone 1F; (Detailed Inspection) | Within 60 flight cycles after the effective date of this AD | Within 30 days after the effective date of this AD | 60 flight cycles. |
| L-1011-385-3 having accumulated fewer than 8,400 flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zones 1A through 1E; (NDI) | Within 8,400 flight cycles or 10 years after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215, whichever occurs first | Within 1,000 flight cycles after the effective date of this AD | 1,200 flight cycles. |
| L-1011-385-3 having accumulated fewer than 8,400 flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zone 1F; (Detailed Inspection) | Within 90 flight cycles or 30 days after the effective date of this AD, whichever occurs later | Within 85 flight cycles or 30 days after the effective date of this AD, whichever occurs later | 85 flight cycles. |
| L-1011-385-3 having accumulated 8,400 or more flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zones 1A through 1E; (NDI) | Within 1,000 flight cycles or 12 months after the effective date of this AD, whichever occurs first | N/A | 1,200 flight cycles. |
| L-1011-385-3 having accumulated 8,400 or more flight cycles after the accomplishment of Lockheed Martin Service Bulletin 093-57-184, 093-57-196, or 093-57-215; as of the effective date of this AD; Zone 1F; (Detailed Inspection) | Within 85 flight cycles after the effective date of this AD | Within 30 days after the effective date of this AD | 85 flight cycles. |
