AD 74-17-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-2 Mk.I | Airworthiness Directives; de Havilland Model DHC-2 (Mk I) Beaver Airplane |
Unsafe Condition
Carbon monoxide entering the airplane cabin due to holes, cracks, flaking, or weld separations in the intensifier tube cabin heater system or heater jackets and exhaust pipe.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the intensifier tube and exhaust pipe or heater jackets for holes, cracks, flaking, or weld separations. Replace or repair any defective parts using AC 43.13-1 or FAA-approved methods. Repeat inspections every 110 hours in service.
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Compliance Time
within the next 110 hours in service after the last inspection pursuant to this directive and thereafter at intervals not to exceed 110 hours in service from a preceding inspection
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Affected Aircraft
de Havilland Model DHC-2 (Mk I) Beaver Airplane with intensifier tube cabin heater system or heater jackets
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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