AD 87-01-01

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AD Number:
87-01-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING Model 757 Series Airplanes
Subject:
Auxiliary Power Unit Starter Motor
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/20/1987
Make:
The Boeing Company
Model:
757-200 Series | 757-200CB Series | 757-200PF Series | 757-300 Series
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 87-01-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5493

AD NUMBER:   87-01-01

SUBJECT HEADING:   BOEING Model 757 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective January 20, 1987.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
87-01-01 BOEING: Amendment 39-5493. Applies to the Model 757 series airplanes specified in Boeing Alert Service Bulletin 757-24A0032, dated May 16, 1986, certificated in any category. To minimize the fire hazard associated with overheating of the transformer rectifier unit of the auxiliary power unit starter motor, accomplish the following within 7 months after the effective date of this AD, unless previously accomplished:

A. Replace the 50-ampere circuit breaker used for the auxiliary power unit starter transformer rectifier unit with a 35-ampere circuit breaker in accordance with Boeing Service Bulletin 757-24A0032, dated May 16, 1986, or later FAA-approved revision.

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, FAA, Northwest Mountain Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the modification required by this AD.

All persons affected by this directive who have not already received copies of the appropriate service document from the manufacturer may obtain copies upon request to the Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124-2207. This document may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.

This amendment becomes effective January 20, 1987.

FOOTER: