AD 2012-10-52
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna | 206 | Airworthiness Directives; Hartzell Engine Technologies Turbochargers |
Unsafe Condition
Incorrectly located oil passages in the turbocharger center housing, causing insufficient oil flow to the bearings, which could result in turbocharger bearing seizure, failure of the turbocharger turbine shaft or wheel, and damage to the airplane.
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Required Actions
Remove the affected Hartzell Engine Technologies turbochargers from service before further flight.
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Compliance Time
Before further flight
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Affected Aircraft
Cessna 206, 207, and 210 airplanes with Continental Motors, Inc TSIO-520-C, -G, -H, -M, and -R reciprocating engines installed, equipped with Hartzell Engine Technologies turbochargers part numbers 406610-0005 and 406610-9005, as listed in HET Alert Service Bulletin No. 047, or overhauled/repaired on or after January 1, 2012, with turbocharger center housing P/N 409836-0005 and date code H-0112.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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