AD 47-27-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Waco Aircraft Company, The | UKS-7 | Airworthiness Directives; WACO Model UKS-7, VKS-7, and VKS-7F Aircraft |
| aircraft | Waco Aircraft Company, The | VKS-7 (Army UC-72D) | Airworthiness Directives; WACO Model UKS-7, VKS-7, and VKS-7F Aircraft |
| aircraft | Waco Aircraft Company, The | VKS-7F | Airworthiness Directives; WACO Model UKS-7, VKS-7, and VKS-7F Aircraft |
Unsafe Condition
Damage to plywood tank support and wing spars caused by collection of moisture in the boxed area of the fuel tank.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the tank area in wings for damage to plywood tank support and wing spars. Remove fuel tanks and inspect plywood supports and spars; replace poor condition supports with new plywood. Repair or replace spars affected by moisture. Drill three 3/16 inch diameter drain holes in plywood supports for drainage.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than next periodic inspection
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
WACO Model UKS-7, VKS-7, and VKS-7F Aircraft
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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