AD 67-33-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-6-1 | Airworthiness Directives; de Havilland Aircraft Type DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-100 | Airworthiness Directives; de Havilland Aircraft Type DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-200 | Airworthiness Directives; de Havilland Aircraft Type DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-300 | Airworthiness Directives; de Havilland Aircraft Type DHC-6 Series Airplanes |
Unsafe Condition
The noncompliance of the Grimes 41905-1 Anti-Collision Light causes a hazardous condition.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a placard stating 'AIRCRAFT LIMITED TO DAY VFR FLIGHT ONLY' within 50 hours' time in service after the effective date. The placard may be removed after replacing the light with Grimes G8400A-24 per de Havilland Modification No. 6/1116 or equivalent approved installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 50 hours' time in service after the effective date of this AD
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Affected Aircraft
de Havilland Aircraft Type DHC-6 Airplanes incorporating Grimes 41905-1 Anti-Collision Light
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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