AD 75-24-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-6-1 | Airworthiness Directives; de Havilland Aircraft of Canada Model DHC-6 Airplanes |
| aircraft | Viking Air Limited | DHC-6-100 | Airworthiness Directives; de Havilland Aircraft of Canada Model DHC-6 Airplanes |
| aircraft | Viking Air Limited | DHC-6-200 | Airworthiness Directives; de Havilland Aircraft of Canada Model DHC-6 Airplanes |
| aircraft | Viking Air Limited | DHC-6-300 | Airworthiness Directives; de Havilland Aircraft of Canada Model DHC-6 Airplanes |
Unsafe Condition
Total loss of A.C. power in the airplane due to a fault occurring in an A.C. circuit caused by slow blow fuses.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for and replace all slow blow fuses with appropriate fast blow fuses in accordance with de Havilland DHC-6 Service Bulletin No. 6/263, Revision D, dated September 30, 1974, or an equivalent method approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 25 hours time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
de Havilland Aircraft of Canada Model DHC-6 airplanes serial nos. 290 through 427, excluding S/N 426, with flitertronic type PC 15 or PC 15A inverters.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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