Casualties unknown

Partial Power Loss on Final Leads to Hard Landing in Field (N31961)

Chino, CA, US

On June 9, 1992, a Piper PA-32RT-300T (registration N31961) operated by Raymond T. Troll was involved in an aviation accident near Chino, CA. Investigators recorded the probable cause as: THE LOSS OF ENGINE POWER FOR UNDETERMINED REASONS. THE PILOT'S MISJUDING THE FLARE WAS A FACTOR. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

During a VFR final approach, a pilot reduced throttle to correct altitude and experienced a partial engine power loss. A forced landing was performed to a field, resulting in a hard touchdown. The cause of the power loss was not determined.

Incident Overview

A visual flight rules (VFR) final approach became critical when the pilot observed the airplane was 'a little high' and reduced the throttle to lose altitude. Immediately after this power reduction, the engine suffered a partial loss of power. The pilot initiated a forced landing to a field located east of the airport.

Sequence of Events

According to the pilot, the airplane was on a VFR final approach when he noticed the aircraft was slightly above the desired glidepath. To correct this, he reduced the throttle setting. Almost simultaneously, the engine experienced a partial loss of power. With insufficient power to reach the runway, the pilot chose to execute a forced landing to a nearby field. He reported that 'the ground (was) coming up fast (and he) put it down straight ahead.' During touchdown, the airplane landed hard.

Investigation

Investigators examined the aircraft and engine but were unable to determine the reason for the partial loss of engine power. The hard landing resulted in damage to the aircraft, though the extent of damage was not specified in the report. No other factors were identified that could have contributed to the power loss.

Frequently asked questions

What happened in the 9 Jun 1992 Piper PA-32RT-300T accident near Chino, CA?

During a VFR final approach, a pilot reduced throttle to correct altitude and experienced a partial engine power loss. A forced landing was performed to a field, resulting in a hard touchdown. The cause of the power loss was not determined.

What aircraft was involved and where did it happen?

The accident on 9 Jun 1992 involved a Piper PA-32RT-300T, registration N31961, operated by Raymond T. Troll, at Chino, CA.

What was the probable cause of the accident?

THE LOSS OF ENGINE POWER FOR UNDETERMINED REASONS. THE PILOT'S MISJUDING THE FLARE WAS A FACTOR.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X14901. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.