Casualties unknown

Helicopter Hard Landing During Pinnacle Approach Training Due to Wind Reversal (N5697D)

LA Verne, CA, US

On October 8, 1994, an Enstrom F-28C (registration N5697D) operated by Robert F. Beck was involved in an aviation accident near LA Verne, CA. Investigators recorded the probable cause as: an inadvertant entry into a settling with power condition and the flight instructor's inability to correct the situation due to an inadequate altitude above ground. 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 pinnacle approach training flight, a helicopter experienced a wind reversal and settling with power, leading to a hard landing. The instructor reported variable winds at the site.

Accident Overview

A certified flight instructor (CFI) was providing dual instruction in pinnacle approaches to a practice area plateau at 2,500 feet mean sea level (MSL). The first approach resulted in a go-around.

Sequence of Events

During the second approach, approximately halfway through, the sight picture steepened, prompting the CFI to assist on the controls to regain the proper angle. According to the CFI, within seconds it became apparent that the wind had reversed direction and was now behind the helicopter, which was settling with power. The CFI attempted a recovery but reported that there was not enough altitude to complete it, and the helicopter landed hard.

Weather Conditions

The CFI stated that winds at the accident site were variable in direction at 10 knots with gusts to 20 knots. No wind direction indicator was present at the accident site.

Frequently asked questions

What happened in the 8 Oct 1994 Enstrom F-28C accident near LA Verne, CA?

During a pinnacle approach training flight, a helicopter experienced a wind reversal and settling with power, leading to a hard landing. The instructor reported variable winds at the site.

What aircraft was involved and where did it happen?

The accident on 8 Oct 1994 involved an Enstrom F-28C, registration N5697D, operated by Robert F. Beck, at LA Verne, CA.

What was the probable cause of the accident?

an inadvertant entry into a settling with power condition and the flight instructor's inability to correct the situation due to an inadequate altitude above ground.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X02474. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.