Incident Summary
A pilot with 22,894 hours of flight experience reported that after a "normal" takeoff, he reduced the throttle to cruise power, and the "engine started losing power." Subsequently, during a forced landing, the aircraft nosed over and came to rest in an inverted position.
Engine Examination Findings
An examination of the engine was conducted by a Pratt & Whitney representative. The inspection revealed dirt and water contamination in the P3 air filter, the low pressure fuel pump filter, and the fuel line between the fuel control unit (FCU) and the oil/fuel heat exchanger.
The 14 fuel nozzles were removed and flow checked. One nozzle met the manufacturer's specifications, one nozzle was completely obstructed, and the remaining 12 nozzles displayed "varying degrees of streaking."
Conclusion
The source does not state a probable cause for the power loss event.