AD 84-18-03 R1
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | California Department of Forestry | International Helicopters, Inc. | Richards Heavylift Helo, Inc. | Rotorcraft Development Corporation | San Joaquin Helicopters | Tamarack Helicopters, Inc. | UH-1F | Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.) Model UH-1 Series Helicopters |
| aircraft | California Department of Forestry | International Helicopters, Inc. | Richards Heavylift Helo, Inc. | Rotorcraft Development Corporation | San Joaquin Helicopters | Tamarack Helicopters, Inc. | UH-1B | Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.) Model UH-1 Series Helicopters |
| aircraft | California Department of Forestry | International Helicopters, Inc. | Richards Heavylift Helo, Inc. | Rotorcraft Development Corporation | San Joaquin Helicopters | Tamarack Helicopters, Inc. | UH-1A | Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.) Model UH-1 Series Helicopters |
| aircraft | California Department of Forestry | International Helicopters, Inc. | Richards Heavylift Helo, Inc. | Rotorcraft Development Corporation | San Joaquin Helicopters | Tamarack Helicopters, Inc. | UH-1E | Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.) Model UH-1 Series Helicopters |
| aircraft | California Department of Forestry | International Helicopters, Inc. | Richards Heavylift Helo, Inc. | Rotorcraft Development Corporation | San Joaquin Helicopters | Tamarack Helicopters, Inc. | UH-1L | Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.) Model UH-1 Series Helicopters |
Unsafe Condition
Improperly repaired or cracked main rotor pitch change link clevis (P/N 204-011-136-1) could fail, leading to possible loss of control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect exposed surfaces of the clevis with a 5-power magnifying glass for replating (golden/silver color in pits) and threaded area for cracks. Remove clevis before further flight if replated or cracked. Use magnetic particle inspection if cracks are found. Install serviceable clevis per military manual.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 10 hours time in service after September 6, 1984, for Garlick Helicopters, Hawkins and Powers Aviation, Inc., and Wilco Aviation UH-1 series helicopters; within 10 hours time in service after February 22, 1985, for California Department of Forestry, Pilot Personnel International, Inc., and International Helicopter, Inc., UH-1 series helicopters
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Garlick Helicopters, Hawkins and Powers Aviation, Inc., Wilco Aviation, California Department of Forestry, Pilot Personnel International, Inc., and International Helicopter, Inc. (Bell Helicopter Textron, Inc.) Model UH-1 series helicopters certificated in the restricted category
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Clevis Inspection
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_84-18-03_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-18-03 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, C...Show more Subject: Clevis Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/22/1985 Make: California Department of Forestry | International Helicopters, Inc. | Richards Heavylift Helo, Inc. ...Show more Model: UH-1F | UH-1B | UH-1A | UH-1E | UH-1L 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: 84-18-03 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4997 AD NUMBER: 84-18-03 R1 SUBJECT HEADING: Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.) Model UH-1 Series Helicopters ACTION: SUMMARY: DATES: Effective February 22, 1985. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-18-03 R1 GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.): Amendment 39-4899 as amended by Amendment 39-4997. Applies to Model UH-1 series helicopters certificated in the restricted category. Compliance is required within 10 hours time in service, unless already accomplished, after September 6, 1984, for Garlick Helicopters, Hawkins and Powers Aviation, Inc., and Wilco Aviation UH-1 series helicopters. Compliance is required within 10 hours time in service, unless already accomplished, after the effective date of this amendment for California Department of Forestry, Pilot Personnel International, Inc., and International Helicopter, Inc., UH-1 series helicopters. To detect any improperly repaired or cracked main rotor pitch change link clevis and to prevent possible failure of a clevis, accomplish the following one-time inspection of each clevis, P/N 204-011-136-1 (FSN 5340-00-839-3934). (a) Visually inspect the exposed surfaces of the clevis using a 5-power or higher magnifying glass. If any surface with pits has a golden or silver color within a pit, the clevis has been replated and must be removed before further flight. (b) Visually inspect the exposed threaded area of the clevis shank, above the jam nut, for crack indications. If a crack indication is found, the part must be removed and additionally inspected for cracks using magnetic particle or equivalent inspection method. (c) If a clevis has been replated or has a crack, the clevis must be removed before further flight. Install a serviceable clevis as prescribed in the appropriate military model maintenance or overhaul manual. (d) Compliance with UH-1 series aircraft military message dated July 13, 1984, from Commander AVSCOM satisfies this AD. Amendment 39-4899 became effective September 6, 1984. This Amendment 39-4997 becomes effective on February 22, 1985. FOOTER:
Document Text
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AD Final Rules - DRS_84-18-03_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-18-03 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, C...Show more Subject: Clevis Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/22/1985 Make: California Department of Forestry | International Helicopters, Inc. | Richards Heavylift Helo, Inc. ...Show more Model: UH-1F | UH-1B | UH-1A | UH-1E | UH-1L 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: 84-18-03 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4997 AD NUMBER: 84-18-03 R1 SUBJECT HEADING: Airworthiness Directives; GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.) Model UH-1 Series Helicopters ACTION: SUMMARY: DATES: Effective February 22, 1985. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-18-03 R1 GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC., WILCO AVIATION, CALIFORNIA DEPARTMENT OF FORESTRY, PILOT PERSONNEL INTERNATIONAL, INC., AND INTERNATIONAL HELICOPTER, INC. (BELL HELICOPTER TEXTRON, INC.): Amendment 39-4899 as amended by Amendment 39-4997. Applies to Model UH-1 series helicopters certificated in the restricted category. Compliance is required within 10 hours time in service, unless already accomplished, after September 6, 1984, for Garlick Helicopters, Hawkins and Powers Aviation, Inc., and Wilco Aviation UH-1 series helicopters. Compliance is required within 10 hours time in service, unless already accomplished, after the effective date of this amendment for California Department of Forestry, Pilot Personnel International, Inc., and International Helicopter, Inc., UH-1 series helicopters. To detect any improperly repaired or cracked main rotor pitch change link clevis and to prevent possible failure of a clevis, accomplish the following one-time inspection of each clevis, P/N 204-011-136-1 (FSN 5340-00-839-3934). (a) Visually inspect the exposed surfaces of the clevis using a 5-power or higher magnifying glass. If any surface with pits has a golden or silver color within a pit, the clevis has been replated and must be removed before further flight. (b) Visually inspect the exposed threaded area of the clevis shank, above the jam nut, for crack indications. If a crack indication is found, the part must be removed and additionally inspected for cracks using magnetic particle or equivalent inspection method. (c) If a clevis has been replated or has a crack, the clevis must be removed before further flight. Install a serviceable clevis as prescribed in the appropriate military model maintenance or overhaul manual. (d) Compliance with UH-1 series aircraft military message dated July 13, 1984, from Commander AVSCOM satisfies this AD. Amendment 39-4899 became effective September 6, 1984. This Amendment 39-4997 becomes effective on February 22, 1985. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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