AD 51-26-01

AD Final Rules - DRS_51-26-01.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
51-26-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Bell Model 47B, 47B3, 47D, 47D1 Helicopters
Subject:
Tail Rotor Reinforcement
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Scotts-Bell 47 Inc
Model:
47B | 47B3 | 47D | 47D1
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Superseded AD: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Superseded By: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: 51-26-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   51-26-01

SUBJECT HEADING:   Airworthiness Directives; Bell Model 47B, 47B3, 47D, 47D1 Helicopters

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
51-26-01 BELL: Applies to All Models 47B, 47B3, 47D, 47D1 Helicopters.

A. Compliance required by October 15, 1951, unless Bell Service Instruction 67S1 has been accomplished already.

To provide additional strength to preclude the possibility of tail rotor failures, wrap each tail rotor blade across the junction of the stainless steel leading edge at the root end area of each blade with two strips of unidirectional fiberglass cloth, Bell P/N 47-642-020-14.

(Bell Service Bulletin No. 75 covers this same subject.)

B. Compliance required daily.

Inspect the tail rotor stainless steel leading edge for evidence of loosening or lifting. Carefully inspect the 3/32 radius, the flanges of leading edge at forward edge of reinforcement plates, and the entire root area for cracks. Replace blades immediately if any of these conditions exist.

(Bell Service Bulletin No. 75, revised October 11, 1951, covers this same subject.)

This supersedes AD 51-23-01.

FOOTER: