AD 75-20-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | B24R | Airworthiness Directives; BEECH Model B24R Airplanes. |
Unsafe Condition
Propeller governor failure due to Rust Ban Preservative Oil or insufficient total time in service (less than 25 hours).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Drain Rust Ban Preservative Oil and refill with SAE 30 or SAE 50 mineral oil or engine manufacturer's recommended oil. Remove and replace propeller governor with new or serviceable P/N A210490 if total time in service is less than 25 hours. Use FAR 21.197 to fly to a location where AD can be accomplished if propeller governor properly governs RPM during pre-flight runup.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to further flight
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Affected Aircraft
BEECH Model B24R airplanes with serial numbers MC-151 thru MC-302, MC-304, MC-307, MC-309, MC-310, MC-312 thru MC-315, MC-317, MC-324, MC-328, MC-333, MC-336, MC-344, MC-345, MC-347 thru MC-357, MC-359, and MC-361 thru MC-364.
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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