AD 48-02-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| 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
Failure of the tail rotor drive shaft bearing hangers could result in loss of tail rotor control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Reinforce the tail rotor drive shaft bearing hangers by riveting reinforcement plates (Bell P/N 47-267-001-152, -153, -154, -155, -156, and -157) with AN 470-AD3-4 rivets.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before next 25 hours of operation
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Scotts-Bell 47 Inc Model 47B | 47B3, serial numbers through 78.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Tail Rotor Drive Shaft
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_48-02-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-02-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Bell Model 47B Series Airplanes Subject: Tail Rotor Drive Shaft 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Date: Make: Scotts-Bell 47 Inc Model: 47B | 47B3 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 48-02-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-02-01 SUBJECT HEADING: Airworthiness Directives; Bell Model 47B Series Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-02-01 BELL: Applies to All 47B Series, Through Serial Number 78. Compliance required before next 25 hours of operation. Reinforce the tail rotor drive shaft bearing hangers by riveting reinforcement plates, Bell P/N 47-267-001-152, -153, -154, -155, -156, and -157, to the appropriate hangers with AN 470- AD3-4 rivets. (Bell Service Bulletin 47C56 dated September 10, 1947, also covers this subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_48-02-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-02-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Bell Model 47B Series Airplanes Subject: Tail Rotor Drive Shaft 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: 48-02-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-02-01 SUBJECT HEADING: Airworthiness Directives; Bell Model 47B Series Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-02-01 BELL: Applies to All 47B Series, Through Serial Number 78. Compliance required before next 25 hours of operation. Reinforce the tail rotor drive shaft bearing hangers by riveting reinforcement plates, Bell P/N 47-267-001-152, -153, -154, -155, -156, and -157, to the appropriate hangers with AN 470- AD3-4 rivets. (Bell Service Bulletin 47C56 dated September 10, 1947, also covers this subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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