AD 92-14-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-7-1 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-100 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-101 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-102 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-103 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
Unsafe Condition
Inadvertent deployment of the ground spoilers and loss of lift.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a functional check of the ground spoiler control system within 15 hours time-in-service or 7 days after April 25, 1983, whichever occurs first. Repeat checks at intervals not exceeding 15 hours time-in-service or 7 days. Incorporate specific modifications (7/2296 or 7/2294) within 6 months after the AD's effective date based on serial numbers and retrofit status.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 6 months after the effective date of this AD for modifications. Functional checks must be done within 15 hours time-in-service or 7 days after April 25, 1983, whichever occurs first, and repeated at intervals not exceeding 15 hours time-in-service or 7 days.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
De Havilland Model DHC-7 series airplanes as listed in Service Bulletin 7-27-46, Revision B, including serial numbers 1 through 93, with specific modifications and retrofit conditions.
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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