AD 58-02-01

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AD Number:
58-02-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Bell Model 47J Helicopters
Subject:
Rotor Blade Bond Separation
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Scotts-Bell 47 Inc
Model:
47J
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Superseded AD: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Superseded By: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:
Updated RGL applicability to match AD applicability; CAR C-11-185
AIRWORTHINESS DIRECTIVES FINAL RULES: 58-02-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   58-02-01

SUBJECT HEADING:   Airworthiness Directives; Bell Model 47J Helicopters

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
58-02-01 BELL: Applies to All Model 47J Helicopters, Using Main Rotor Blade P/N 47- 110-401-7, -9 and -11.

Due to the possibility of a faulty bond between the butt plate laminates and the wood portion of the blade, causing a subsequent separation of the subject parts with possible catastrophic results, the following mandatory inspection is required:

1. Inspect butt plate laminates for indication of bond separation by grasping blade at tip and coning blade downward slightly after static stop is contacted, then coning blade upward to extent that tip is above level line of yoke. If separation is found no repair is allowed, remove blades and notify Bell Helicopter Corporation. Inspection required after each refueling until blades accumulate a total of 50 hours flight time and then daily thereafter.

2. Inspect on one-time basis butt plate laminates for bonding voids by tapping lightly completely around exposed surface of each laminate with a four or six inch wrench. Each laminate will have a different sound; however, an obvious variation in sound on an individual laminate tends to indicate a void. If void indicated, notify Bell Helicopter Corporation immediately.

This supersedes AD 58-01-02.

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