AD 80-03-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-6-1 | Airworthiness Directives; DeHavilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-100 | Airworthiness Directives; DeHavilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-200 | Airworthiness Directives; DeHavilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-300 | Airworthiness Directives; DeHavilland Model DHC-6 Series Airplanes |
Unsafe Condition
Cracking in the flap control rod tubes could cause asymmetric failure of the flap system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect tube ends of rod assemblies with dye penetrant method using at least ten power glass. Replace cracked rods before further flight with inspected/serviceable, new, or modified rods. Repeat inspections at specified intervals and install sleeves as per Service Bulletin 6/388. Replace certain control rods within specified service hours or years. Report findings to FAA within 10 days.
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Compliance Time
within the next 20 hours in service or 30 days, whichever occurs first, after the effective date of this AD
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Affected Aircraft
DeHavilland Model DHC-6-1, DHC-6-100, DHC-6-200, DHC-6-300 airplanes with serial numbers 1 thru 657 and subsequent.
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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