AD 74-25-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aerostar Aircraft Corporation | PA-60-600 (Aerostar 600) | Airworthiness Directives; Ted R Smith & Associates Models 600, 601, and 601P Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-601 (Aerostar 601) | Airworthiness Directives; Ted R Smith & Associates Models 600, 601, and 601P Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-601P (Aerostar 601P) | Airworthiness Directives; Ted R Smith & Associates Models 600, 601, and 601P Airplanes |
Unsafe Condition
Overloading of the remaining alternator system after failure of either dual alternator system could occur, potentially leading to electrical system failure.
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Required Actions
Amend the Airplane Flight Manual's Electrical System Load Limitations Section to limit continuous electrical load to 55 amps during IFR conditions, install a cockpit placard with the same limitation, and maintain this AD with the AFM until replaced by an approved revision. An approved alternate electrical warning system allows removal of these limitations.
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Compliance Time
within the next 30 days after the effective date of this AD, unless already accomplished
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Affected Aircraft
Aerostar Aircraft Corporation Models PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), and PA-60-601P (Aerostar 601P) with electrical attitude and directional gyros and 70 amp alternators installed by the manufacturer or via STC SA2336WE/SA2367WE
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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