AD 88-15-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-3 | Airworthiness Directives; DeHavilland Model DHC-3 Series Airplanes |
Unsafe Condition
Disengagement of the folding utility seat forward leg from the floor mounting rail could result in hazards to seat occupants from an inadequately restrained seat during a crash.
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Required Actions
Within 50 hours time-in-service after the effective date, and every 50 hours thereafter, attempt to move the lower end of each leg sideways into the open part of the keyhole slot using hand force. If the leg can be released, remove the seat from service until DeHavilland Modification No. 3/932 is incorporated. Repeat the check each time seats are moved from stowed to deployed position. Flightcrew members briefed on the procedure may perform the check, with required maintenance records kept as per applicable FARs. The checks are no longer required after installing Modification No. 3/932 per S/B 3/42 Rev A.
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Compliance Time
Within 50 hours time-in-service after the effective date of this AD, and at subsequent intervals of 50 hours TIS
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Affected Aircraft
DeHavilland Model DHC-3 (all serial numbers) airplanes certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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