AD 88-22-10

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AD Number:
88-22-10
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BOEING Model 757 Series Airplanes
Subject:
Duct Leak Detection System
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/07/1988
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Superseded AD: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Superseded By: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: 88-22-10
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-6055

AD NUMBER:   88-22-10

SUBJECT HEADING:   Airworthiness Directives; BOEING Model 757 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective December 7, 1988.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
88-22-10 BOEING: Amendment 39-6055. Applies to Model 757 series airplanes, as listed in Boeing Service Bulletin 757-26-0016, dated May 5, 1988, certificated in any category.

Compliance required within the next 15 months after the effective date of this AD, unless previously accomplished.

To prevent depressurization due to loss of all bleed air inflow following crew action based on an erroneous duct leak indication, accomplish the following:

A. Modify the wing and body duct leak detection system in accordance with Boeing Service Bulletin 757-26-0016, dated May 5, 1988.

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.

NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments 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 for the accomplishment of the inspections required by 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 Being Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, 9010 East Marginal Way South, Seattle, Washington.

This amendment, 39-6055, becomes effective December 7, 1988.

FOOTER: