AD 48-11-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47B | Airworthiness Directives; Bell Model 47B Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47B3 | Airworthiness Directives; Bell Model 47B Series Helicopters |
Unsafe Condition
The existing main rotor drag brace may fail due to insufficient strength, leading to loss of rotor control and possible separation of the main rotor blades.
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Required Actions
Install main rotor drag brace Bell P/N 47-110-146-2 in place of the existing part. Refer to Bell Service Bulletin 47C31 for compliance.
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Compliance Time
next 25-hour inspection
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Affected Aircraft
Scotts-Bell 47 Inc Model 47B and 47B3 helicopters
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Federal Register Abstract
Rotor Drag Brace
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_48-11-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-11-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Bell Model 47B Series Helicopters Subject: Rotor Drag Brace 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Date: Make: Scotts-Bell 47 Inc Model: 47B | 47B3 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 48-11-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-11-05 SUBJECT HEADING: Airworthiness Directives; Bell Model 47B Series Helicopters ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-11-05 BELL: Applies to Model 47B Series. Compliance required at next 25-hour inspection. To provide increased strength, install main rotor drag brace, Bell P/N 47-110-146-2, in place of the existing part. (Bell Service Bulletin 47C31 also covers this subject.) FOOTER:
Document Text
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AD Final Rules - DRS_48-11-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-11-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Bell Model 47B Series Helicopters Subject: Rotor Drag Brace 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: 48-11-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-11-05 SUBJECT HEADING: Airworthiness Directives; Bell Model 47B Series Helicopters ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-11-05 BELL: Applies to Model 47B Series. Compliance required at next 25-hour inspection. To provide increased strength, install main rotor drag brace, Bell P/N 47-110-146-2, in place of the existing part. (Bell Service Bulletin 47C31 also covers this subject.) 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.
Related Airworthiness Directives
2023-11-07
final ruleAirworthiness Directives; Various Helicopters
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