AD 80-18-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aerostar Aircraft Corporation | PA-60-601 (Aerostar 601) | Airworthiness Directives; PIPER (Ted Smith) Model 601 and 601P Series Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-601P (Aerostar 601P) | Airworthiness Directives; PIPER (Ted Smith) Model 601 and 601P Series Airplanes |
Unsafe Condition
Possible engine failure due to excessive lean fuel/air mixture.
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Required Actions
Index and mark left and right engine fuel pressure gauges with a yellow arc between 12 psi and 18 psi range. Incorporate provisions in the Airplane Flight Manual Operations Limitations Section, including adding '12-18 psi' to the Power Plant Instruments paragraph and a statement requiring fuel boost pump 'ON' when fuel pressure is less than 18 psi and engine operates above idle power.
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Compliance Time
Within 30 days from the effective date of this AD
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Affected Aircraft
Aerostar Aircraft Corporation PA-60-601 (Aerostar 601) and PA-60-601P (Aerostar 601P) series airplanes certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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