AD 47-32-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47B | Airworthiness Directives; Bell Model 47B and 47B3 Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47B3 | Airworthiness Directives; Bell Model 47B and 47B3 Helicopters |
Unsafe Condition
The aluminum alloy rivets in the tail rotor pitch adjustment rod assembly may fail, leading to loss of antitorque rotor control system strength.
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Required Actions
Replace the aluminum alloy rivets in the tail rotor pitch adjustment rod assembly with steel rivets at the next 100-hour teardown inspection.
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Compliance Time
next 100-hour teardown inspection
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Affected Aircraft
Scotts-Bell 47 Inc Model 47B and 47B3 helicopters
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Federal Register Abstract
Tail Rotor Rivet Replacement
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-32-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-32-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Bell Model 47B and 47B3 Helicopters Subject: Tail Rotor Rivet Replacement 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Date: Make: Scotts-Bell 47 Inc Model: 47B | 47B3 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-32-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-32-13 SUBJECT HEADING: Airworthiness Directives; Bell Model 47B and 47B3 Helicopters ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-32-13 BELL: (Was Mandatory Note 13 of AD-1H-1.) Applies to Models 47B and 47B3 Helicopters. Compliance required at the next 100-hour teardown inspection. Additional strength in the antitorque rotor control system has been found desirable as a result of service experience. This may be accomplished by replacing the aluminum alloy rivets in the tail rotor pitch adjustment rod assembly with steel rivets. (Bell Service Bulletin 47C44 dated June 16, 1947, also covers this same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_47-32-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-32-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Bell Model 47B and 47B3 Helicopters Subject: Tail Rotor Rivet Replacement 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: 47-32-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-32-13 SUBJECT HEADING: Airworthiness Directives; Bell Model 47B and 47B3 Helicopters ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-32-13 BELL: (Was Mandatory Note 13 of AD-1H-1.) Applies to Models 47B and 47B3 Helicopters. Compliance required at the next 100-hour teardown inspection. Additional strength in the antitorque rotor control system has been found desirable as a result of service experience. This may be accomplished by replacing the aluminum alloy rivets in the tail rotor pitch adjustment rod assembly with steel rivets. (Bell Service Bulletin 47C44 dated June 16, 1947, also covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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Unsafe Condition: Inspect Tail Rotor Blade & Abrasion Strip