Honeywell’s small heavy fuel engine (SHFE), in development since 2003, “will change the game for turboshaft engines in the future,” predicted Ron Rich, the company’s director of advanced aerospace technology.
Fuel control unit
Pilatus PC-12, South Bend, Ind., Dec. 14, 2004–The NTSB blamed the crash of PC-12 N922RG on the failure of the fuel control unit bellows, which resulted in a significant loss of engine power. The pilot made a forced landing on a roadway after, he said, the engine “abruptly and smoothly rolled back” shortly after takeoff from South Bend Regional Airport. The airplane’s wingtip hit two utility poles during rollout.
A leak in the fuel control unit pneumatic system caused the P&WC PT6 to fail in a Pilatus PC-12 on December 14, according to Pilatus (see AIN, January, page 46). The pilot was able to deadstick the turboprop single to a safe landing on a street in South Bend, Ind. Pilatus re-issued a service letter to remind PC-12 operators that there is a manual override procedure that enables full power to be restored if the fuel control unit fails.
Socata TBM 700B, Mobile, Ala., April 24, 2003–On approach to Mobile Downtown Airport, the pilot of TBM N705QD said he had a “runawayengine.” The ground controller cleared the airplane to land on Runway 18.