AD 93-11-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | AC | Rajay/Rotomaster | Textron Lycoming | Diaphragm fuel pumps | Airworthiness Directives; AC, Textron Lycoming, and Rajay/Rotomaster Fuel Pumps |
Unsafe Condition
Disruption of fuel flow to the engine can result in a loss of engine power.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service affected low and high pressure diaphragm fuel pumps and replace with serviceable pumps. Serviceable pumps must either never have been overhauled by AAI or have specific stamps indicating prior compliance with earlier ADs.
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Compliance Time
Required prior to further flight, unless accomplished previously.
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Affected Aircraft
AC, Textron Lycoming, and Rajay/Rotomaster-modified high and low pressure diaphragm fuel pumps overhauled by Aero Accessories Inc. (AAI) between specific dates and serial ranges, installed on Textron Lycoming piston engines and aircraft by Beechcraft, Bellanca, Cessna, Mooney, Piper, and Rockwell Commander (Models 112 and 114).
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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