AD 89-16-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 550 | Airworthiness Directives; Cessna Model 550 and 551 Series Airplanes |
| aircraft | Cessna Aircraft Company | 551 | Airworthiness Directives; Cessna Model 550 and 551 Series Airplanes |
Unsafe Condition
Failure of fuel flow transmitter electrical connector end fittings could result in total engine power loss or an engine compartment fire.
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Required Actions
Within 50 hours time-in-service after the effective date, inspect engines for Cessna P/N 9912031-6 or 9912031-5 fuel flow transmitters per SB550-73-2. If P/N 9912031-5 transmitters have two-piece fittings, replace them prior to further flight or within 6 months per SB550-73-1, Rev 1. Repetitive inspections at intervals not exceeding 25 hours are required if deferring replacement to 6 months.
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Compliance Time
Within the next 50 hours time-in-service after the effective date of this AD, and replacement must occur either prior to further flight or within 6 months after the effective date, with repetitive inspections every 25 hours time-in-service if deferred.
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Affected Aircraft
Cessna Model 550 and 551 series airplanes, Unit Numbers -0002 through -0207 and -0209.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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