Airworthiness Directive · Amendment 39-15629 · McDonnell Douglas Model DC-8-61, DC-8-61F, DC-8-63, DC-8-63F, DC-8-71F, and DC-8-73F Airplanes
McDonnell Douglas Model DC-8-61, DC-8-61F, DC-8-63, DC-8-63F, DC-8-71F, and DC-8-73F Airplanes
This AD applies to McDonnell Douglas Model DC-8-61, DC-8-61F, DC-8-63, DC-8-63F, DC-8-71F, and DC-8-73F airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin DC8-53A082, dated February 6, 2007.
We are adopting a new airworthiness directive (AD) for certain McDonnell Douglas Model DC-8-61, DC-8-61F, DC-8-63, DC-8-63F, DC-8-71F, and DC-8-73F airplanes. For certain airplanes, this AD requires non- destructive testing (NDT) to detect cracks of the door jamb corners of the forward and aft service doors, and doing applicable related investigative and corrective actions. For certain other airplanes, this AD requires inspecting and repairing if necessary or replacing previously repaired door jamb corners with an applicable repair. This AD results from reports of numerous cases of cracks in the skin at the door jamb corners of the forward and aft service doors. We are issuing this AD to detect and correct fatigue cracking of door jamb corners of the forward and aft service doors, which could adversely affect the structural integrity of 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.
At the applicable compliance time and repeat intervals listed in Tables 1 through 5 inclusive of paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin DC8-53A082, dated February 6, 2007; except where “the service bulletin” specifies a compliance time after the date on the service bulletin, this AD requires compliance within the specified compliance time after the effective date of this AD: Do the actions specified in paragraph (f)(1), (f)(2), or (f)(3) of this AD, as applicable.
(1) For airplanes identified as Group 1, Configurations 1 and 2, in the service bulletin: Do the testing and related investigative and corrective actions by accomplishing all the applicable actions specified in the Accomplishment Instructions of the service bulletin.
(2) For airplanes identified as Group 1, Configuration 3, in the service bulletin: Inspect and repair discrepancies in accordance with a method approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA.
(3) For airplanes identified as Group 1, Configuration 4, in the service bulletin: Do the actions specified in paragraph (f)(3)(i) or (f)(3)(ii) of this AD.
(i) Repair door jamb corners of the service door using a method approved in accordance with the procedures specified in paragraph (h) of this AD.
(ii) Replace the previously repaired door jamb corners with an applicable repair in accordance with the Accomplishment Instructions of the service bulletin.
Accomplishment of the applicable actions required by paragraph (f) of this AD constitutes compliance with certain requirements of AD 93-01-15, as it pertains to the affected areas of principal structural elements 53.08.039 and 53.08.040 of McDonnell Douglas Report No. L26-011, “DC-8 Supplemental Inspection Document (SID),” dated December 1985.
