AD 91-01-05

91-01-05 BOEING: Amendment 39-6850. Docket No. 90-NM-155-AD.

Applicability: Boeing Model 757 series airplanes, as listed in Boeing Service Bulletin 757-25-0061, Revision 2, dated June 29, 1989, certificated in any category.

Compliance: Required within 60 days after the effective date of this AD, unless previously accomplished.

To reduce the potential for reduced passenger evacuation capability during an emergency, accomplish the following:

A. Modify the number 3 left and right emergency exit doors by replacing the door catch assembly support and performing an operational check, in accordance with Boeing Service Bulletin 757-25-0061, Revision 1, dated June 9, 1988, or Revision 2, dated June 29, 1989.

B. 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 (ACO), FAA, Transport Airplane Directorate.

NOTE: Therequest should be submitted directly to the Manager, Seattle ACO, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Seattle ACO.

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 Airplane Group, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington.

This amendment (39-6850, AD 91-01-05) becomes effective on January 31, 1991.