| AD Number | 80-25-08 | Status | Active |
| Effective Date | December 12, 1980 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-3987 |
| Product Type | ["Aircraft"] | Product Subtype | ["Rotorcraft"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Columbia Helicopters, Inc. |
| Model(s) | 107-II |
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.