AD 86-04-03

86-04-03 MCDONNELL DOUGLAS: Amendment 39-5227. Applies to Model DC-10 and KC-10A (Military) series airplanes, certificated in any category, which are listed in McDonnell Douglas DC-10 Service Bulletin 32-155, Revision 2, dated July 28, 1983, and Service Bulletin 32-198 dated January 17, 1984. Compliance required as indicated, unless previously accomplished. To minimize the potential operational hazard associated with the latent failure of the monitoring circuit of the antiskid system, accomplish the following:

A. Within the next 3,000 flight hours after the effective date of this AD, and thereafter at intervals not to exceed 3,000 flight hours, accomplish a parking brake shut-off valve monitoring circuitry test in accordance with McDonnell Douglas DC-10 Maintenance Manual Section 32-45-05.

B. Modifications listed below in paragraphs C. and D. are optional and constitute terminating action for this AD when incorporated.

C. Install a parking brake valve fault isolation relay in accordance with McDonnell Douglas DC-10 Service Bulletin 32-155, Revision 2, dated July 28, 1983, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

D. Revise the antiskid control wiring in accordance with McDonnell Douglas DC-10 Service Bulletin 32-155, Revision 2, dated July 28, 1983, or Service Bulletin 32-198, dated January 17, 1984, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

E. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

F. Special 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.

All persons affected by this proposal who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to the 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 the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at 4344 Donald Douglas Drive, Long Beach, California.

This amendment becomes effective March 13, 1986.