No fatalities

Training Flight Ends in Crash Landing After Engine Feathering Incident (G-ALMR)

Warton AFB, United KingdomTakeoff (climb)

On April 12, 1960, a De Havilland DH.104 Dove (registration G-ALMR) operated by English Electric Company was involved in an aviation accident near Warton AFB, United Kingdom during takeoff. No fatalities were reported. Investigators recorded the probable cause as: It was determined that the starboard propeller was found to be feathered. Later examination revealed no faults in either propeller feathering systems. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

During a proficiency check flight, an instructor feathered the left engine and raised flaps at 200 feet. The aircraft lost speed and height, leading to a crash landing in a field; both occupants unhurt.

Incident Overview

A local training flight involving an instructor and a pilot conducting a proficiency check ended in a crash landing after a loss of speed and altitude. The aircraft sustained substantial damage, but both occupants were uninjured.

Sequence of Events

After takeoff, while climbing to a height of 200 feet, the instructor reduced power on the left engine, feathered the propeller, and raised the flaps. Immediately thereafter, the airplane experienced a loss of speed and height. The instructor took over control and attempted an emergency landing in a field beyond the runway end. The aircraft crash landed in the field and came to rest.

Investigation Findings

Examination following the incident revealed that the starboard propeller was found to be feathered. Subsequent inspection of both propeller feathering systems found no faults.

Probable Cause

The official probable cause, as determined by investigators, is: "It was determined that the starboard propeller was found to be feathered. Later examination revealed no faults in either propeller feathering systems."