AD 80-25-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Columbia Helicopters, Inc. | 107-II | Airworthiness Directives; BOEING VERTOL (VERTOL) Model 107-II Helicopters |
Unsafe Condition
Fatigue failure of the main rotor tension-torsion strap assemblies Part No. 107R2003-1.
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Required Actions
Remove from service tension-torsion strap assemblies Part No. 107R2003-1 upon the accumulation of 27,800 hours in service and replace with an airworthy part meeting this AD's requirements.
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Compliance Time
27,800 hours in service
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Affected Aircraft
BOEING VERTOL (VERTOL) Model 107-II helicopters certificated in all categories.
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Federal Register Abstract
Tension-Torsion Strap Assemblies
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_80-25-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 80-25-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BOEING VERTOL (VERTOL) Model 107-II Helicopters Subject: Tension-Torsion Strap Assemblies Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/12/1980 Make: Columbia Helicopters, Inc. Model: 107-II Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 80-25-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3987 AD NUMBER: 80-25-08 SUBJECT HEADING: Airworthiness Directives; BOEING VERTOL (VERTOL) Model 107-II Helicopters ACTION: SUMMARY: DATES: Effective December 12, 1980. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 80-25-08 BOEING VERTOL (VERTOL): Amendment 39-3987. Applies to Vertol Model 107-II helicopters certificated in all categories. Compliance required as indicated. To prevent fatigue failure of the main rotor tension-torsion strap assemblies, remove from service tension-torsion strap assemblies Part No. 107R2003-1 upon the accumulation of 27,800 hours in service and replace with an airworthy part that meets the requirement of this AD. This amendment is effective December 12, 1980. FOOTER:
Document Text
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AD Final Rules - DRS_80-25-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 80-25-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BOEING VERTOL (VERTOL) Model 107-II Helicopters Subject: Tension-Torsion Strap Assemblies Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/12/1980 Make: Columbia Helicopters, Inc. Model: 107-II 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: 80-25-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3987 AD NUMBER: 80-25-08 SUBJECT HEADING: Airworthiness Directives; BOEING VERTOL (VERTOL) Model 107-II Helicopters ACTION: SUMMARY: DATES: Effective December 12, 1980. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 80-25-08 BOEING VERTOL (VERTOL): Amendment 39-3987. Applies to Vertol Model 107-II helicopters certificated in all categories. Compliance required as indicated. To prevent fatigue failure of the main rotor tension-torsion strap assemblies, remove from service tension-torsion strap assemblies Part No. 107R2003-1 upon the accumulation of 27,800 hours in service and replace with an airworthy part that meets the requirement of this AD. This amendment is effective December 12, 1980. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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