AD 59-10-08

AD Final Rules - DRS_59-10-08.html
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AD Number:
59-10-08
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Piper Models PA-18, PA-18A, PA-20 and PA-22 Aircraft
Subject:
Gas Tank Cap Vent
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
06/25/1959
Effective Date:
07/15/1959
Make:
Piper Aircraft Inc.
Model:
PA-18 | PA-18A | PA-20 | PA-22
Product Type:
Aircraft
Product Subtype:
Small Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
AIR-700: Compliance & Airworthiness Division
Office of Primary Responsibility:
AIR-720: Operational Safety Branch
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 59-10-08
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   59-10-08

SUBJECT HEADING:  
Airworthiness Directives; Piper Models PA-18, PA-18A, PA-20 and PA-22 Aircraft

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
59-10-08 PIPER: Applies to Models PA-18, PA-18A, PA-20 and PA-22, Aircraft.

Compliance required not later than July 15, 1959, for Models PA-18, PA-18A, and PA- 22, and not later than November 30, 1959, for the Model PA-20.

Recent occurrences have revealed improper compliance with AD 56-26-02 (Canceled March 24, 1958). Therefore, the tank vents drilled into the gas tank cap must be checked as follows: Insert a 0.030-inch diameter wire into the holes at the bottom of the cap. If the holes are properly drilled the wire can be inserted over 3/4 inch until it hits the inside top of the cap. If the holes are not properly drilled the wire will hit the baffle and only enter approximately 1/4 inch. Also, if the cap has one hole drilled and is marked with an "X" adjacent to the hole, and the cap rattles when shaken, a loose internal rivet is indicated. If either of the latter conditions exist, the following must be accomplished:

Rework the fuel tank caps by drilling two additional 0.067 holes 1/4 inch from the existing center hole. Drill through bottom part of cap and baffle only. Check these newly drilled holes with the 0.030-inch diameter wire as outlined above.

(This airworthiness directive supplements Piper Service Bulletin No. 148A dated May 29, 1957. The drawings included in this bulletin may be referred to as a guide in reworking the fuel tank caps.)

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