AD 77-24-03
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hiller Aviation | Siam Hiller Holdings, Inc. | UH-12C | Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters |
| aircraft | Hiller Aviation | Siam Hiller Holdings, Inc. | UH-12D | Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters |
| aircraft | Hiller Aviation | Siam Hiller Holdings, Inc. | UH-12L | Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters |
| aircraft | Hiller Aviation | Siam Hiller Holdings, Inc. | UH-12L4 | Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters |
| aircraft | Hiller Aviation | Siam Hiller Holdings, Inc. | UH-12E | Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters |
| aircraft | Hiller Aviation | Siam Hiller Holdings, Inc. | UH-12E-L | Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters |
Unsafe Condition
Hazardous engine power loss from inadvertent shutoff of the fuel control valve.
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Required Actions
Install a guard on the fuel shutoff valve handle in accordance with Hiller Service Bulletin No. 72-1 dated June 17, 1977, or later FAA approved revision. Equivalent methods may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.
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Compliance Time
within the next 100 hours time in service after the effective date of this AD
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Affected Aircraft
Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 helicopters with control levers P/N 72229 or 72210, all serial numbers up to No. 5024.
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Federal Register Abstract
Fuel Control Valve
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_77-24-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-24-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters Subject: Fuel Control Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/06/1978 Make: Hiller Aviation | Siam Hiller Holdings, Inc. Model: UH-12C | UH-12D | UH-12L | UH-12L4 | UH-12E | UH-12E-L 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: 77-24-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3088 AD NUMBER: 77-24-03 SUBJECT HEADING: Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters ACTION: SUMMARY: DATES: Effective January 6, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-24-03 HILLER HELICOPTERS: Amendment 39-3088. Applies to Hiller Model UH-12C, D, E (4 place), L, E-L, and L4's certificated in all categories incorporating control levers P/N 72229 or 72210. All aircraft serial numbers up to No. 5024 are included. S/N 5024 and subsequent will have the guard installed at the time of manufacture. (a) To prevent hazardous engine power loss from inadvertent shutoff of the fuel control valve, within the next 100 hours time in service after the effective date of this AD, install a guard on the fuel shutoff valve handle in accordance with the instructions described in Paragraph 2B in Hiller Service Bulletin No. 72-1 dated June 17, 1977, or later FAA approved revision. (b) Equivalent methods of fabrication and installation of a guard on the fuel shutoff valve handle may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region. (c) Special flight permits may be issued in accordance with FAR's 21.197 and 21.199 to operate helicopters to a base for accomplishment of the modification required by Paragraph (a) of this AD. This amendment becomes effective January 6, 1978. FOOTER:
Document Text
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AD Final Rules - DRS_77-24-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-24-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters Subject: Fuel Control Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/06/1978 Make: Hiller Aviation | Siam Hiller Holdings, Inc. Model: UH-12C | UH-12D | UH-12L | UH-12L4 | UH-12E | UH-12E-L 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: 77-24-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3088 AD NUMBER: 77-24-03 SUBJECT HEADING: Airworthiness Directives; Hiller Models UH-12C, UH-12D, UH-12E, UH-12L, UH-12E-L, and UH-12L4 Helicopters ACTION: SUMMARY: DATES: Effective January 6, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-24-03 HILLER HELICOPTERS: Amendment 39-3088. Applies to Hiller Model UH-12C, D, E (4 place), L, E-L, and L4's certificated in all categories incorporating control levers P/N 72229 or 72210. All aircraft serial numbers up to No. 5024 are included. S/N 5024 and subsequent will have the guard installed at the time of manufacture. (a) To prevent hazardous engine power loss from inadvertent shutoff of the fuel control valve, within the next 100 hours time in service after the effective date of this AD, install a guard on the fuel shutoff valve handle in accordance with the instructions described in Paragraph 2B in Hiller Service Bulletin No. 72-1 dated June 17, 1977, or later FAA approved revision. (b) Equivalent methods of fabrication and installation of a guard on the fuel shutoff valve handle may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region. (c) Special flight permits may be issued in accordance with FAR's 21.197 and 21.199 to operate helicopters to a base for accomplishment of the modification required by Paragraph (a) of this AD. This amendment becomes effective January 6, 1978. FOOTER:
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