AD 86-26-03

AD Final Rules - DRS_86-26-03.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
86-26-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING Model 757 Series Airplanes
Subject:
Thrust Reverser Valves
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/12/1987
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Superseded AD: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Superseded By: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: 86-26-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5500

AD NUMBER:   86-26-03

SUBJECT HEADING:   BOEING Model 757 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective January 12, 1987.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
86-26-03 BOEING: Amendment 39-5500. Applies to Model 757 series airplanes equipped with Pratt and Whitney Aircraft PW2037 engines, as listed in Boeing Alert Service Bulletin 757- 78A0006, dated August 7, 1986, certificated in any category.

To minimize the potential for uncommanded deployment of a thrust reverser in flight, accomplish the following within 30 days after the effective date of this AD, unless previously accomplished:

A. Inspect and, if necessary, install a restrictor check valve on the control port of both thrust reverser isolation valves in accordance with Boeing Alert Service Bulletin 757- 78A0006, dated August 7, 1986, or later FAA-approved revision.

B. Modify the unlock and auto-restow proximity sensors' installation in accordance with Boeing Alert Service Bulletin 757-78A0006, dated August 7, 1986, or later FAA-approved revision.

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.

D. 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 inspections and/or modifications 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 the Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124-2207. These documents 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 12, 1987.

FOOTER: