80-25-08: Tension-Torsion Strap Assemblies

FAA order 80-25-08 is an airworthiness directive in force since December 12, 1980. The FAA's subject line: Tension-Torsion Strap Assemblies. It names Boeing-Vertol 107: about 7 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: other and general.

What it applies to as the FAA lists it

Kind of product: Aircraft
Makes: Columbia Helicopters, Inc.
Models: 107-II
On this site: Boeing-Vertol 107 7 registered

Dates and paperwork

In force since: December 12, 1980
Docket: Unknown
Status: Current
The FAA's document: Read the order on the FAA's site

The order itself the regulatory text, as published

Show the full text (494 characters)

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.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/80-25-08.json · aircraft systems.