Casualties unknown

1982-11-21: Bell 47G-3B-1 (N73991) — Rrt Investments, Inc. — Tucson, AZ

Tucson, AZ, US

On November 21, 1982, a Bell 47G-3B-1 (registration N73991) operated by Rrt Investments, Inc. was involved in an aviation accident near Tucson, AZ. 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 1781061362Data APIEditorial standards

During a solo instructional flight, a pilot practicing helicopter landings flared too fast, causing the tail rotor to strike the ground. One blade separated, leading to severe vibration and detachment of the tail rotor gear box.

Incident Overview

A pilot on a solo instructional flight was practicing landings in a helicopter. The pilot reported that during one landing approach, the airspeed was too high. While flaring to reduce speed, the tail rotor contacted the ground, resulting in the separation of one tail rotor blade.

Sequence of Events

Following the blade separation, a severe vibration developed before the helicopter could be landed and the engine shut down. The vibration caused the tail rotor gear box to detach from the airframe. No other damage was reported to the aircraft.

Aircraft and Pilot Information

The pilot held a single engine land airplane certificate and was operating the helicopter under solo instructional privileges. The specific helicopter type and registration were not disclosed in the source.

Damage Assessment

The damage was limited to the tail rotor blade and gear box. The source notes that no other components were damaged.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20020917X04879. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.