DATE: November 21, 2012
New, rebuilt, or overhauled Lycoming TIO540AK1A engine models in Table 1 Lycoming engine models fieldoverhauled or repaired with model TAO411, P/N 410188019 turbocharger turbine wheel.
TIME OF COMPLIANCE
Before further flight.
This Service Bulletin is notification for mandatory compliance with HET’s Alert Service Bulletin No. 048 dated 11/16/2012, Turbocharger HET model TAO411, P/N 4101880019 Turbine Wheel Replacement.
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