AD 66-13-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Columbia Helicopters, Inc. | 107-II | Airworthiness Directives; VERTOL Model 107-II Helicopters |
Unsafe Condition
Simultaneous engine false fire warnings caused by electrical wiring system malfunction.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace wafer test switch P/N 1-1917-1N5 with switch P/N 1-1919-2N5, revise wiring arrangement per Vertol Service Bulletins 107-219 and 107-219A, and functionally test the engine fire detection system as described in Vertol 107-2 Maintenance Manual, Chapter 16.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 130 hours' time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
VERTOL Model 107-II Helicopters
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.