AD 57-12-02

AD Final Rules - DRS_57-12-02.html
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AD Number:
57-12-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Bell Model 47H1 Helicopters
Subject:
Tail Boom Attach Fittings
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Scotts-Bell 47 Inc
Model:
47H-1
Product Type:
Aircraft
Product Subtype:
Rotorcraft
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 57-12-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   57-12-02

SUBJECT HEADING:   Airworthiness Directives; Bell Model 47H1 Helicopters

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
57-12-02 BELL: Applies to Model 47H1 Helicopters Serial Numbers 1349, 1351 Through 1360, 1362, 1363, 1365 Through 1371.

Compliance required as soon as possible but not later than August 1, 1957.

In order to prevent possible failure of the tail boom attach bolts the following inspection and rework should be accomplished.

1. Visually inspect the four (4) tail boom attach fittings 47-265-026-1 and -2 on the forward bulkhead to determine if all eight (8) bolt hole locations (2 in each fitting) have been spot faced. It is necessary to remove the baggage compartment floor section in order to make this inspection.

2. If it is found that any or all the bolt hole locations have not been spot faced, it is required that they be spot faced in accordance with the instructions given in Bell Mandatory Service Bulletin No. 116, dated November 9, 1956.

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