82-27-11 R1 MCDONNELL DOUGLAS: Amendment 39-4530 as amended by Amendment 39-4660. Applies to McDonnell Douglas Model DC-10-10, -10F, -15, -30, and -30F series airplanes with operable galley lifts, certificated in all categories. Compliance required by January 30, 1984, unless already accomplished. To minimize the potential operational hazard to personnel associated with galley lift electrical interlock system malfunctions, accomplish the following: \n\n\tA.\tReplace the galley lift system electrical interlock switches with hermetically sealed switches as outlined in the Accomplishment Instructions of McDonnell Douglas DC-10 Service Bulletin 25-266, dated July 23, 1979, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tB.\tReplace the plunger type interlock switch actuators with leaf spring actuators, install structural protection for the interlock switches, and install additional warning placards as outlined in the Accomplishment Instructions of McDonnell Douglas DC-10 Service Bulletin 25-307, Revision 1, dated March 25, 1983, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tNOTE: Airplanes modified in accordance with Service Bulletin 25-307 dated May 5, 1982, require rework. \n\n\tC.\tAlternate means of compliance with this AD which provide an equivalent level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tD.\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. \n\n\tThe manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). \n\n\tAll persons affected by this directive who have not already received these documents fromthe manufacturer may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director, Publications and Training, C1-750 (54-60). These documents also may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California. \n\n\tAmendment 39-4530 became effective February 16, 1983. \n\n\tThis Amendment 39-4660 becomes effective June 15, 1983.