AD 62-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hiller Aviation | UH-12A | Airworthiness Directives; Hiller Model UH-12A and UH-12B Helicopters |
| aircraft | Hiller Aviation | UH-12B | Airworthiness Directives; Hiller Model UH-12A and UH-12B Helicopters |
Unsafe Condition
Failure of the tail rotor drive slip joints can result in loss of power to the tail rotor.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace CR-10 or CR-10T type rollers of both fore and aft slip joints with the improved Torrington CR-10U type rollers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 150 hours' time in service after the effective date of this AD
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Affected Aircraft
Hiller Model UH-12A and UH-12B Helicopters, including Assembly Nos. 24500-9, -10, 24565, and 24544.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Tail Rotor
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_62-03-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 62-03-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Hiller Model UH-12A and UH-12B Helicopters Subject: Tail Rotor Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/30/1962 Make: Hiller Aviation Model: UH-12A | UH-12B Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 62-03-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 62-03-01 SUBJECT HEADING: Airworthiness Directives; Hiller Model UH-12A and UH-12B Helicopters ACTION: SUMMARY: DATES: Effective January 30, 1962. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 62-03-01 HILLER: Amdt. 395 Part 507 Federal Register January 30, 1962. Applies to All UH-12A and UH-12B Helicopters. Compliance required within the next 150 hours' time in service after the effective date of this AD. To preclude additional failures of the tail rotor drive slip joints which can result in loss of power to the tail rotor, replace CR-10 or CR-10T type rollers of both fore and aft slip joints UH-12A Assembly Nos. 24500-9 and -10 and UH-12B Assembly Nos. 24565 and 24544, with the improved Torrington CR-10U type rollers. (Hiller Service Bulletin No. 44, Revision A covers this same subject.) This supersedes AD 55-08-03. This directive effective January 30, 1962. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_62-03-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 62-03-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Hiller Model UH-12A and UH-12B Helicopters Subject: Tail Rotor Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/30/1962 Make: Hiller Aviation Model: UH-12A | UH-12B 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: 62-03-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 62-03-01 SUBJECT HEADING: Airworthiness Directives; Hiller Model UH-12A and UH-12B Helicopters ACTION: SUMMARY: DATES: Effective January 30, 1962. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 62-03-01 HILLER: Amdt. 395 Part 507 Federal Register January 30, 1962. Applies to All UH-12A and UH-12B Helicopters. Compliance required within the next 150 hours' time in service after the effective date of this AD. To preclude additional failures of the tail rotor drive slip joints which can result in loss of power to the tail rotor, replace CR-10 or CR-10T type rollers of both fore and aft slip joints UH-12A Assembly Nos. 24500-9 and -10 and UH-12B Assembly Nos. 24565 and 24544, with the improved Torrington CR-10U type rollers. (Hiller Service Bulletin No. 44, Revision A covers this same subject.) This supersedes AD 55-08-03. This directive effective January 30, 1962. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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