Airworthiness Directive · Amendment 39-15913 · Wings
Lockheed Model 382, 382B, 382E, 382F, and 382G Series Airplanes
This AD applies to all Lockheed Model 382, 382B, 382E, 382F, and 382G series airplanes, certificated in any category.
We are adopting a new airworthiness directive (AD) for all Lockheed Model 382, 382B, 382E, 382F, and 382G series airplanes. This AD requires an inspection to identify discrepant barrel nuts in the upper wing joint, engine truss, and rear beam pylon support; and replacement of any discrepant barrel nut with a new barrel nut, if necessary. This AD results from a report of severe cracking of multiple barrel nuts in the wing station (WS) 220 upper wing joint found during scheduled maintenance. We are issuing this AD to prevent cracking of the barrel nuts in the upper wing joint, engine truss, and rear beam pylon support, which could result in reduced structural integrity of the affected part and consequent detachment of the wing or engine from the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 30 days after the effective date of this AD: Do a general visual inspection to identify discrepant barrel nuts in the upper wing joint, engine truss, and rear beam pylon support, in accordance with the Accomplishment Instructions of Lockheed Alert Service Bulletin A382-57-91, Revision 1, dated March 25, 2009. Except as provided by paragraph (h) of this AD, if any discrepant barrel nut is found, before further flight, replace the barrel nut with a new barrel nut in accordance with the service bulletin.
Note 1: For the purposes of this AD, a general visual inspection is: “A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to ensure visual access to all surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked.”
If any discrepant barrel nut is found during the inspection required by this AD, and Lockheed Alert Service Bulletin A382-57-91, Revision 1, dated March 25, 2009, specifies contacting Lockheed for appropriate action: Before further flight, replace the discrepant barrel nut using 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.
(i) Actions done before the effective date of this AD in accordance with Lockheed Alert Service Bulletin A382-57-91, dated March 6, 2009, are acceptable for compliance with the corresponding requirements of this AD.
Although Lockheed Alert Service Bulletin A382-57-91, Revision 1, dated March 25, 2009, specifies to submit certain information to the manufacturer, this AD does not include that requirement.
As of the time specified in paragraph (k)(1) or (k)(2) of this AD, as applicable, no person may install, on any airplane, a barrel nut in the upper wing joint, engine truss, and rear beam pylon support unless the barrel nut has been modified in accordance with the Accomplishment Instructions of Lockheed Alert Service Bulletin A382-57-91, Revision 1, dated March 25, 2009.
(1) For unmarked barrel nuts with a deformed thread locking style: As of 30 days after the effective date of this AD.
(2) For all other discrepant barrel nuts: As of the effective date of this AD.
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.
