AD 90-10-07

90-10-07 BOEING: Amendment 39-6592. Docket No. 89-NM-102-AD.

Applicability: Model 767 series airplanes, line numbers 1 through 243, 257, 262, 263, 269, 273 through 275, 282, 285, 289, and 291, certificated in any category.

Compliance: Required within the next 24 months after the effective date of this AD, unless previously accomplished.

To prevent uncommanded extension of three flight spoilers on one wing, due to a failure of a spoiler wheel command unit, accomplish the following:

A. For Group 1 airplanes (as listed in the Boeing service bulletin): Replace both spoiler wheel command units in accordance with Boeing Service Bulletin 767-27-0085, Revision 1, dated November 30, 1989.

B. For Group 2 airplanes (as listed in the Boeing service bulletin): Replace the left side spoiler wheel command unit in accordance with Boeing Service Bulletin 767-27-0085, Revision 1, dated November 30, 1989.

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, Seattle 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 Manager, Seattle Aircraft Certification Office.

C. 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 Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, 9010 East Marginal WaySouth, Seattle, Washington.

This amendment (39-6592, AD 90-10-07) becomes effective on June 12, 1990.