AD 85-03-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 552 | Airworthiness Directives; CESSNA Model 552 and 650 Series Airplanes |
| aircraft | Cessna Aircraft Company | 650 | Airworthiness Directives; CESSNA Model 552 and 650 Series Airplanes |
Unsafe Condition
Short-to-ground of the nickel cadmium battery which could result in an electrical fire.
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Required Actions
Inspect the aircraft battery to determine if a SAFT type 40976, P/N 18585, is installed. If installed on Model 650 airplanes, modify the battery per Cessna Service Letter SL650-24-03 and SAFT Service Bulletin 0005. For Model 552 airplanes, modify per SAFT Service Bulletin 0005. Reinspect insulators every 100 flight hours until approved batteries are installed.
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Compliance Time
Prior to further flight
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Affected Aircraft
Cessna Model 552 series (serial numbers 552-0001, 552-0003 through 552-0006 and 552-0008) and Model 650 series (serial numbers 650-0001 through 650-0072)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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