AD 71-11-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-6-1 | Airworthiness Directives; de Havilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-100 | Airworthiness Directives; de Havilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-200 | Airworthiness Directives; de Havilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-300 | Airworthiness Directives; de Havilland Model DHC-6 Series Airplanes |
Unsafe Condition
The circuit wires in certain de Havilland DHC-6 series airplanes lack adequate protection, which could result in electrical circuit failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate specified DHC Modifications (Nos. 6/1369, 6/1370, 6/1371, 6/1372, 6/1389) as per Service Bulletin 6/245. Exclusions apply for specific serial numbers. Equivalent alterations may be used with FAA approval.
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Compliance Time
within the next 500 hours time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
de Havilland Model DHC-6-1, DHC-6-100, DHC-6-200, DHC-6-300 airplanes with serial numbers 1 through 289, excluding specific serial numbers 176, 221, 233, 268, and 286 as applicable per modification
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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