AD 90-04-03

90-04-03 MCDONNELL DOUGLAS: Amendment 39-6506. Docket No. 88-NM-214-AD.

Applicability: McDonnell Douglas Model DC-10 series airplanes equipped with lavatories H and J, as listed in McDonnell Douglas Service Bulletin 25-357, dated September 5, 1989, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent fire resulting from an electrical short in the H and J lavatory overhead light assembly terminal caps, accomplish the following:

A. Within 60 days after the effective date of this AD, modify the overhead light assemblies in lavatories H and J, in accordance with the Accomplishment Instructions of McDonnell Douglas Service Bulletin 25-357, dated September 5, 1989.

B. Within 60 days after the effective date of this AD, inspect the insulation blankets and foam insulating material in the areas above lavatories H and J and in the areas outboard of lavatories H and J. Prior to further flight, replace any insulation blankets and/or foam insulating material which has been contaminated by passenger door drive chain lubricant.

C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment, and then send it to the officer indicated above.

D. 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 directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director of Publications, C1-LOO (54-60). These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California 90806-2425.

This amendment (39-6506, AD 90-04-03) becomes effective on March 19, 1990.