AD 92-08-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-3 | Airworthiness Directives; DE HAVILLAND Model DHC-3 Otter Airplanes |
Unsafe Condition
Loss of control of the airplane caused by inadvertent engine shutoff.
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Required Actions
Visually inspect the PT6A-135/135A engine to ensure installation and correct assembly of fuel condition lever lock part number 20037-18 per Servo-Aero SB001. If not installed or assembled correctly, install the lock prior to further flight per SB001. Special flight permits may be obtained under FAR 21.197/21.199 to reach a location for compliance.
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Compliance Time
Within the next 100 hours time-in-service after May 18, 1992, unless already accomplished.
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Affected Aircraft
DE HAVILLAND Model DHC-3 Otter airplanes (all serial numbers) with Servo-Aero Engineering 20000 Series Kit on Pratt & Whitney PT6A-135/135A engine.
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
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