AD 78-18-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aerostar Aircraft Corporation | PA-60-600 (Aerostar 600) | Airworthiness Directives; Piper Aerostar Model 600, 601 and 601P Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-601 (Aerostar 601) | Airworthiness Directives; Piper Aerostar Model 600, 601 and 601P Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-601P (Aerostar 601P) | Airworthiness Directives; Piper Aerostar Model 600, 601 and 601P Airplanes |
Unsafe Condition
Reversed readings of left and right wing tank fuel quantity indicators may occur due to improper wiring or selector indexing, leading to incorrect fuel quantity indication.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 hours time in service after the effective date, inspect fuel quantity indications by adding 10 gallons to one wing tank and verifying correct registration on the corresponding indicator. If incorrect, correct the fuel quantity indicating system malfunction prior to further flight. Revert to standard switch labelling after interim relabelling.
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Compliance Time
Within 10 hours time in service after the effective date of this AD
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Affected Aircraft
Piper Aerostar Model 600, 601 and 601P airplanes, serial numbers 150 through 520.
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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