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Practice Single-Engine ILS Approach Leads to Go-Around and Loss of Control (N4810T)

Chino, CA, US

On May 31, 1994, a Piper PA-34-200 (registration N4810T) operated by Air Desert Pacific Corp. was involved in an aviation accident near Chino, CA. No fatalities were reported. Investigators recorded the probable cause as: THE RIGHT ENGINE'S FAILURE FOR UNDETERMINED REASONS TO RESPOND TO THROTTLE COMMAND DURING A GO-AROUND ATTEMPT, AND BOTH PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRCRAFT. INADEQUATE SUPERVISION OF THE FLIGHT BY THE CFI IS ALSO CONSIDERED A CAUSE. 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 practice single-engine ILS approach to runway 26, a go-around was initiated but the right engine failed to respond. The aircraft yawed, rolled, struck the ground with the wing tip, and cartwheeled. Examination of the engine revealed no discrepancies.

Incident Summary

A flight instructor and student were conducting a practice single-engine Instrument Landing System (ILS) approach to runway 26. The right engine was set to zero thrust for the exercise. The aircraft was high and had drifted over the right edge of the runway when the instructor commanded a go-around.

Sequence of Events

According to the instructor, the student brought up both throttles. However, the right engine failed to respond. The aircraft subsequently yawed and rolled to the right. The right wing tip struck the ground, and the aircraft cartwheeled before coming to a stop.

Post-Incident Examination

The right engine was removed from the aircraft and examined by a Federal Aviation Administration (FAA) certified airframe and power plant mechanic. No discrepancies were noted during the examination.

No Determined Cause

As the examination revealed no abnormalities, the source does not provide a specific cause for the engine's failure to respond during the go-around.

Engine failure

Frequently asked questions

What happened in the 31 May 1994 Piper PA-34-200 accident near Chino, CA?

During a practice single-engine ILS approach to runway 26, a go-around was initiated but the right engine failed to respond. The aircraft yawed, rolled, struck the ground with the wing tip, and cartwheeled. Examination of the engine revealed no discrepancies.

Were there any fatalities in the 31 May 1994 Piper PA-34-200 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 31 May 1994 involved a Piper PA-34-200, registration N4810T, operated by Air Desert Pacific Corp., at Chino, CA.

What was the probable cause of the accident?

THE RIGHT ENGINE'S FAILURE FOR UNDETERMINED REASONS TO RESPOND TO THROTTLE COMMAND DURING A GO-AROUND ATTEMPT, AND BOTH PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRCRAFT. INADEQUATE SUPERVISION OF THE FLIGHT BY THE CFI IS ALSO CONSIDERED A CAUSE.

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X01334. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.