AD 73-20-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Tarver Propellers, LLC | 220 | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
| aircraft | Tarver Propellers, LLC | F200 | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
| aircraft | Tarver Propellers, LLC | F200-H | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
Unsafe Condition
Propeller blade tipping may have loosening, loose rivets, or deteriorated wood under the tipping, or lack of a relief cut in the stainless steel tipping material within the first five and one-half inches inboard from the tip, leading to potential failure.
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Required Actions
Visually inspect the propeller blade tipping for evidence of loosening, loose rivets, or deteriorated wood. Measure the distance from the blade tipping outboard end to the first relief cut in the stainless steel tipping material inboard from the tip. Repair or replace blades with defective tipping; return blades with late style one piece tipping (no relief cut within 5.5 inches) to Univair for inspection and rework within 25 flight hours.
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Compliance Time
Required after receipt of this Airworthiness Directive and before further flight unless already accomplished.
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Affected Aircraft
UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 propellers, 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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