AD 80-08-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-7-1 | Airworthiness Directives; DeHavilland Model DHC-7 Airplanes |
| aircraft | Viking Air Limited | DHC-7-100 | Airworthiness Directives; DeHavilland Model DHC-7 Airplanes |
| aircraft | Viking Air Limited | DHC-7-101 | Airworthiness Directives; DeHavilland Model DHC-7 Airplanes |
| aircraft | Viking Air Limited | DHC-7-102 | Airworthiness Directives; DeHavilland Model DHC-7 Airplanes |
| aircraft | Viking Air Limited | DHC-7-103 | Airworthiness Directives; DeHavilland Model DHC-7 Airplanes |
Unsafe Condition
Failure of the main landing gear due to cracking in the upper drag strut.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the lower lug end of the upper drag strut assembly daily and prior to next flight. Conduct Eddy Current inspections within 200 hours in service or 250 landings, whichever comes first. Replace the upper drag strut assembly before further flight if cracks are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to next flight, daily thereafter, and within 200 hours in service or 250 landings, whichever occurs first, after the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
DeHavilland Model DHC-7 airplanes, Serial Numbers 1 thru 18.
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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