AD 94-14-22
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-6-1 | Airworthiness Directives: de Havilland DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-100 | Airworthiness Directives: de Havilland DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-200 | Airworthiness Directives: de Havilland DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-300 | Airworthiness Directives: de Havilland DHC-6 Series Airplanes |
Unsafe Condition
Separation of the elevator control support from the airplane as a result of a cracked horizontal stabilizer center hinge bracket flange, which could result in reduced controllability.
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Required Actions
Inspect the horizontal stabilizer center hinge bracket for cracks using visual inspections with a strong light source and 10X magnifying glass (instead of dye penetrant inspections specified in Service Bulletin 6/512). Replace any cracked bracket before further flight.
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Compliance Time
Within the next 250 hours time-in-service (TIS), unless already accomplished, and thereafter at intervals not to exceed 1,200 hours TIS.
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Affected Aircraft
de Havilland DHC-6-1, DHC-6-100, DHC-6-200, and DHC-6-300 airplanes (all serial numbers).
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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