Airworthiness Directive · Amendment 39-22590 · Powerplant
Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes
This AD applies to the airplanes identified in paragraphs (c)(1) and (2) of this AD.
(1) All Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G airplanes, certificated in any category.
(2) All airplanes specified in paragraphs (c)(2)(i) through (xi) of this AD, type certificated in the restricted category.
(i) LeSEA Model C-130A airplanes (transferred from Central Air Services, Inc.), Type Certificate Data Sheet (TCDS) A34SO, Revision 1.
(ii) T.B.M., Inc., Model C-130A airplanes, TCDS A39CE, Revision 3.
(iii) Western International Aviation, Inc., Model C-130A airplanes, TCDS A33NM.
(iv) USDA Forest Service Model C-130A airplanes, TCDS A15NM, Revision 4.
(v) Snow Aviation International, Inc., Model C-130A airplanes, TCDS TQ3CH, Revision 1.
(vi) International Air Response (transferred from Rogers Helicopters, Inc., and Heavylift Helicopters Inc.) Model C-130A airplanes, TCDS A31NM, Revision 3.
(vii) Heavylift Helicopters, Inc., Model C-130B airplanes, TCDS A35NM, Revision 1.
(viii) Hawkins & Powers Aviation, Inc., Model HP-C-130A airplanes, TCDS A30NM, Revision 1.
(ix) Coulson Aviation (USA), Inc., Model EC-130Q and C-130H airplanes, TCDS T00019LA, Revision 4.
(x) Lockheed-Georgia Company Model 282-44A-05 (C-130B) airplanes, TCDS A5SO.
(xi) Surplus Model C-130A airplanes.
The FAA is superseding Airworthiness Directive (AD) 96-12-20, which applied to certain Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G airplanes. AD 96-12-20 required visual inspections to detect loose, missing, or deformed fasteners in the upper truss mounts of certain engines, visual inspections to detect cracking in the associated lugs, repetitive ultrasonic inspections to detect cracking of the upper lugs, and replacement of damaged or cracked parts. AD 96-12-20 also provided for an optional terminating action for the repetitive inspections. This AD was prompted by reports of fatigue cracking of the lugs of the upper truss mount, and by reports of cracks found prior to the initial inspection times required by AD 96-12-20 and the determination that the terminating action is no longer valid. This AD requires one-time inspections for cracked or severed engine truss mount upper lugs of the outboard engines, and replacement of the engine truss mount if necessary. This AD also revises the applicability to include all Model 382, 382B, 382E, 382F, and 382G airplanes, and all Model EC-130Q, C-130H, HP-C-130A, C-130A, and C-130B (including Model 282- 44A-05) airplanes. The FAA is issuing this AD to address the unsafe condition on these products.
Within 35 days after the effective date of this AD, do the inspections specified in paragraphs (g)(1) and (2) of this AD, using a method approved in accordance with the procedures specified in paragraph (i) of this AD. If any cracked or severed engine truss mount upper lug is found, the engine truss mount must be replaced before further flight, using a method approved in accordance with the procedures specified in paragraph (i) of this AD.
(1) Do a one-time detailed visual inspection for cracking of the No. 1 and No. 4 engine truss mount upper lugs, lower surfaces, at outer wing station (OWS) 162 and OWS 197; and for severed engine truss mount upper lugs; at a total of four locations: two locations per engine mount, one mount assembly at each OWS.
(2) Do a one-time borescope inspection for cracking of the No. 1 and No. 4 engine truss mount upper lug side surfaces, inboard and outboard, at OWS 162 and OWS 197; and for severed engine truss mount upper lugs; at a total of eight locations: two locations per engine truss mount lug, two lugs per engine, one mount assembly at each OWS.
Note 1 to paragraph (g): Guidance for accomplishing the inspections and replacement can be found in Lockheed Martin Aeronautics Company Alert Service Bulletin A382-57-103, dated October 19, 2023.
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.
