AD 97-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 188A | Lockheed Models L-188A and L-188C Series Airplanes |
| aircraft | Lockheed Martin Corporation | 188C | Lockheed Models L-188A and L-188C Series Airplanes |
Unsafe Condition
Positioning of power levers below the flight idle stop during flight may lead to loss of airplane controllability or engine overspeed with consequent loss of engine power.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the Airplane Flight Manual (AFM) Limitations Section to prohibit power levers below flight idle stop during flight and state consequences. This may be done by inserting a copy of this AD or the applicable 1996 AFM revision into the AFM.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date of this AD (October 27, 1997).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Models L-188A and L-188C series airplanes, certificated in any category.
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.