AD 89-11-03

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AD Number:
89-11-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BOEING Model 737-300 and -400 Series Airplanes
Subject:
Lavatory Service System
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
06/05/1989
Make:
The Boeing Company
Model:
737-300 Series | 737-400 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Superseded AD: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Superseded By: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: 89-11-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-6223

AD NUMBER:   89-11-03

SUBJECT HEADING:   Airworthiness Directives; BOEING Model 737-300 and -400 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective June 5, 1989.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
89-11-03 BOEING: Amendment 39-6223.
Applicability: Model 737-300 and -400 series airplanes, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent the ingestion of "blue ice" into the engine and the potential loss of an engine, accomplish the following:

A. Within 200 hours time-in-service after the effective date of this AD:

1. Conduct a leak check of the forward lavatory service system, in accordance with Boeing Telex M-7272-89-2127 dated April 25, 1989, and repeat the check at intervals thereafter not to exceed 200 hours time-in-service; or

2. Drain the forward lavatory system, lock the lavatory(s), and placard the lavatory(s) inoperative.

B. Leaks discovered at any time must be repaired prior to further flight, or the forward lavatory system must be drained, and the lavatory(s) locked and placarded inoperative, prior to further flight.

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.

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 the inspections and/or modifications required by this AD.

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

This amendment (39-6223, AD 89-11-03) becomes effective on June 5, 1989.

FOOTER: