Casualties unknown

Student Pilot Loses Control of Hughes 269B During Unauthorized Hover Attempt (N101DN)

Rubidoux, CA, US

On April 26, 1987, a Hughes 269B (registration N101DN) was involved in an aviation accident near Rubidoux, CA. 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 2026-06-10Data APIEditorial standards

A student pilot, without rotorcraft rating, started a Hughes 269B and attempted a hover despite being told to wait. The helicopter climbed vertically and crashed after the pilot failed to release cyclic friction.

Incident Overview

A Hughes 269B helicopter was destroyed when it went out of control and collided with the ground during an unauthorized takeoff to a hover. The pilot, who had recently purchased the aircraft and was scheduled for his first flight lesson on the day of the accident, was not rated for rotorcraft. According to the certified flight instructor (CFI), the student was instructed to wait and not touch any controls.

Sequence of Events

While waiting for the CFI to arrive, the student pilot started the helicopter engine, ran it up to full rotor rpm, and then began to increase the collective pitch control. The helicopter climbed vertically to a high hover before the pilot lost control and it struck the ground.

Pilot Background

The pilot reported having approximately 500 hours of flight time but did not specify the type of aircraft or provide substantiation for this total. The CFI stated that the student pilot was explicitly told not to operate the aircraft before the lesson.

Contributing Factors

The pilot stated that he had not released the cyclic friction before becoming airborne, which may have limited control authority during the hover.

Investigation Findings

The investigation determined that the accident occurred when the non-rotorcraft-rated student pilot initiated an unauthorized takeoff and lost control of the helicopter. No probable cause was stated in the source material.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X30727. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.