AD 47-41-06

final rule

Airworthiness Directives; Bell Model 47B Series Airplanes

AD Number
47-41-06
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

Applicability

TypeManufacturerModelDetails
aircraft Scotts-Bell 47 Inc 47B Airworthiness Directives; Bell Model 47B Series Airplanes
aircraft Scotts-Bell 47 Inc 47B3 Airworthiness Directives; Bell Model 47B Series Airplanes

Unsafe Condition

The butt plate screws of the main rotor blade may work loose in service.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Stake the butt plate screws of the main rotor blade in accordance with Bell Service Bulletin 47C50 dated July 22, 1947.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

prior to next periodic inspection

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Scotts-Bell 47 Inc Model 47B | 47B3 through serial number 71

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Main Rotor Blade

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_47-41-06.html
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Details
AD Number:
47-41-06
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Bell Model 47B Series Airplanes
Subject:
Main Rotor Blade
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Scotts-Bell 47 Inc
Model:
47B | 47B3
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Superseded AD: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Superseded By: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: 47-41-06
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   47-41-06

SUBJECT HEADING:   Airworthiness Directives; Bell Model 47B Series Airplanes

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
47-41-06 BELL: (Was Mandatory Note 18 of AD-1H-2.) Applies to All Models of 47B Series, Through Serial Number 71.

Compliance required prior to next periodic inspection.

The butt plate screws of the main rotor blade should be staked in accordance with Bell Service Bulletin 47C50 dated July 22, 1947, to prevent them from working loose in service.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_47-41-06.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
47-41-06
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Bell Model 47B Series Airplanes
Subject:
Main Rotor Blade
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Scotts-Bell 47 Inc
Model:
47B | 47B3
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: 47-41-06
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   47-41-06

SUBJECT HEADING:   Airworthiness Directives; Bell Model 47B Series Airplanes

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
47-41-06 BELL: (Was Mandatory Note 18 of AD-1H-2.) Applies to All Models of 47B Series, Through Serial Number 71.

Compliance required prior to next periodic inspection.

The butt plate screws of the main rotor blade should be staked in accordance with Bell Service Bulletin 47C50 dated July 22, 1947, to prevent them from working loose in service.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.