Airworthiness Directive · Amendment 39-18260 · Wings
Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes
This AD applies to all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G airplanes, certificated in any category.
We are adopting a new airworthiness directive (AD) for all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G airplanes. This AD requires replacing the center wing box (CWB) and certain outer wings. This AD was prompted by an evaluation by the design approval holder (DAH) indicating that the CWB and outer wings are subject to widespread fatigue damage (WFD). We are issuing this AD to prevent fatigue cracking of the outer wings and the lower surface of the CWB, which could result in reduced structural integrity of the airplane.
For airplanes with outer wings having serial numbers (S/Ns) 3946 through 4541 inclusive, or manufacturing end product (MEP) replacement outer wings 14Y series having part numbers (P/Ns) 388021-9/-10: At the later of the times specified in paragraphs (g)(1) and (g)(2) of this AD, except as specified in paragraph (i) of this AD, replace each outer wing with a replacement wing specified in paragraph (h) of this AD, in accordance with the Accomplishment Instructions of Lockheed Service Bulletin 382-57-96, dated December 16, 2013.
(1) Before the outer wing accumulates 30,000 total flight hours.
(2) Within 30 days or 50 flight hours after the effective date of this AD, whichever occurs later.
(1) Outer wings having S/Ns 3946 through 4541 inclusive, and MEP replacement outer wings 14Y series having P/Ns 388021-9/-10, are acceptable for the outer wing replacement required by paragraph (g) of this AD, provided that the replacement outer wing has accumulated less than 30,000 total flight hours. The replacement outer wing must be replaced before it accumulates 30,000 total flight hours, as required by paragraph (g) of this AD. Lockheed Service Bulletin 382-57-96, dated December 16, 2013, describes an option to salvage certain system components when replacing an outer wing. If salvaged components are used in a replacement wing, an operator may need to comply with the following:
(i) AD 2011-09-04, Amendment 39-16666 (76 FR 28626, May 18, 2011);
(ii) AD 2011-15-02, Amendment 39-16749 (76 FR 41647, July 15, 2011);
(iii) AD 2012-06-09, Amendment 39-16990 (77 FR 21404, April 10, 2012);
(iv) AD 2015-05-08, Amendment 39-18118 (80 FR 14805, March 20, 2015); and
(v) AD 2015-06-08, Amendment 39-18126 (80 FR 19013, April 9, 2015).
(2) Outer wings having S/Ns 4542 and subsequent, and MEP replacement outer wings except for 14Y series having P/Ns 388021-9/-10, that have accumulated less than 75,000 total flight hours, are acceptable for the outer wing replacement required by paragraph (g) of this AD.
For airplanes that have any outer wing with previous military usage: Within 30 days after the effective date of this AD, contact the Manager, Atlanta Aircraft Certification Office (ACO), FAA, to determine a compliance time for accomplishing the actions required by paragraph (g) of this AD, by using a method approved in accordance with the procedures specified in paragraph (n) of this AD.
At the applicable time specified in paragraphs (k)(1) and (k)(2) of this AD: Replace the CWB, as specified in paragraph (j)(1) or (j)(2) of this AD.
(1) Replace the CWB with a new CWB, in accordance with the Accomplishment Instructions of Lockheed Service Bulletin 382-57-94, dated December 3, 2013. Although a note in the Accomplishment Instructions of Lockheed Service Bulletin 382-57-94, dated December 3, 2013, instructs operators to contact Lockheed if any assistance is needed in accomplishing the actions specified in the service information, any deviation from the instructions provided in the service information must be approved in accordance with the procedures specified in paragraph (n) of this AD.
(2) Replace the CWB with a serviceable CWB using a method approved in accordance with the procedures specified in paragraph (n) of this AD.
Replace the CWB at the later of the times specified in paragraphs (k)(1) and (k)(2) of this AD.
(1) Before the CWB accumulates 50,000 total flight hours.
(2) Within 30 days or 50 flight hours after the effective date of this AD, whichever occurs later.
For airplanes identified in Lockheed Service Bulletin 382-57-90, dated November 5, 2010: Replacement of the CWB with a new CWB, in accordance with the Accomplishment Instructions of Lockheed Service Bulletin 382-57-90, dated November 5, 2010, is acceptable for compliance with the requirements of paragraph (j) of this AD.
Replacement of the CWB as required by paragraph (j) of this AD terminates the inspections required by AD 2011-09-04, Amendment 39-16666 (76 FR 28626, May 18, 2011), for that CWB.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
