Airworthiness Directive · Amendment 39-17075 · Hartzell Engine Technologies Turbochargers
Hartzell Engine Technologies Turbochargers
This emergency AD applies to the following Hartzell Engine Technologies (HET) turbochargers:
(1) Turbocharger HET part number (P/N) 406610-0005 or P/N 406610-9005 with serial numbers listed in Table 1 of HET Alert Service Bulletin No. 047, dated May 8, 2012.
(2) Turbochargers with P/N 406610-0005 or P/N 406610-9005 overhauled or repaired on or later than January 1, 2012, with turbocharger center housing P/N 409836-0005 and date code H-0112.
(3) Turbocharger center housings P/N 409836-0005 sold as piece parts which are in field/distributor inventory with date code H-0112.
These turbochargers are installed on, but not limited to, Cessna 206, 207, and 210 airplanes with Continental Motors, Inc TSIO-520-C, -G, -H, -M, and -R reciprocating engines installed.
We are adopting a new airworthiness directive (AD) for Cessna 206, 207, and 210 airplanes with Hartzell Engine Technologies (HET) turbochargers, part numbers (P/Ns) 406610-0005 and 406610-9005, installed. This emergency AD was sent previously to all known U.S. owners and operators of these airplanes. This AD requires removing the affected turbochargers from service before further flight. This AD was prompted by a report of an HET turbocharger causing an engine in-flight power rollback. We are issuing this AD to prevent turbocharger bearing seizure, failed turbocharger components, and damage to the airplane.
Before further flight, remove from service the turbochargers identified in paragraph (c) of this emergency AD, unless already done.
