AD 57-03-02

AD Final Rules - DRS_57-03-02.html
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AD Number:
57-03-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; DOUGLAS DC-7 Series and LOCKHEED Constellation Series
Subject:
Fuel Strainer Screen
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
The Boeing Company | Lockheed Aircraft Corporation
Model:
DC-7 | DC-7B | DC-7C | 1049-54 | 1049B-55 (Navy R7V-1) | 1049C-55 | 1049D-55 | 1049E-55 | 1049F-55 (...Show more
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Superseded AD: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Superseded By: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: 57-03-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   57-03-02

SUBJECT HEADING:   Airworthiness Directives; DOUGLAS DC-7 Series and LOCKHEED Constellation Series

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
57-03-02 DOUGLAS AND LOCKHEED: Applies to Lockheed Constellation Series Airplanes and Douglas DC-7 Series Airplanes With Wright Engines.

Compliance required not later than December 1, 1957.

Under certain cold weather operating conditions it is possible for the fuel inlet strainer and other parts in the engine master control to become clogged with ice as a result of entrained water in the fuel freezing on the screen. This has caused a loss of power on all engines simultaneously.

To relieve strainer icing, a screen having a bypass valve Bendix P/N 366204 should be installed in replacement of the screen not having a bypass valve. Bendix Service Bulletin No. 797 covers this subject. It should be noted that the incorporation of the screen with bypass will not positively prevent power loss from fuel ice; therefore, work is continuing to develop a means to protect other portions of the master control downstream of the inlet strainer. If necessary, a supplement to this note will be published when additional information becomes available.

FOOTER: