No fatalities

1998-10-17: Beechcraft 99 Airliner (N299GL) — Alpine Air — Missoula, United States of America

Missoula, United States of AmericaLanding (descent or approach)

On October 17, 1998, a Beechcraft 99 Airliner (registration N299GL) operated by Alpine Air was involved in an aviation accident near Missoula, United States of America during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: The pilot-in-command's delayed remedial action in response to the co-pilot's improper landing flare, and the co-pilot's application of excessive (full nose-up) trim during the landing flare as taught in the operator's initial aircrew training program. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781204836Data APIEditorial standards
Aircraft registered N299GL
Aircraft registered N299GL. Photo: Aeroprints.com / CC BY-SA 3.0, via Wikimedia Commons

During a night visual approach, the co-pilot flared too high, causing the aircraft to float. The pilot-in-command took control, initiated a go-around, but delayed action and full nose-up trim made control difficult, leading to an unsuccessful go-around.

Incident Sequence

While flying a night visual approach, the co-pilot executed a landing flare that was too high above the runway. The aircraft subsequently floated down the runway, causing a decrease in airspeed. The pilot-in-command then took control of the aircraft. Perceiving that the aircraft was approaching a stall, the pilot-in-command initiated a go-around.

During the attempted go-around, the pilot-in-command found it necessary to keep both hands on the control wheel. This was because the aircraft had been trimmed to the full nose-up position during the landing flare. Even with both hands on the control wheel, the aircraft became very difficult to control. Although the co-pilot moved the throttles to maximum power and began retraction of the flaps, the pilot-in-command's remedial action had occurred too late to successfully execute the go-around.

Training Background

It was later discovered that during the operator's initial training, both crew members had been taught to apply full nose-up trim after crossing the runway threshold and reducing the power to idle. This action, which the operator eliminated from the landing sequence procedure after this accident, was inconsistent with the instructions in the Beech 99 Pilots Operating Manual.

Probable cause

The pilot-in-command's delayed remedial action in response to the co-pilot's improper landing flare, and the co-pilot's application of excessive (full nose-up) trim during the landing flare as taught in the operator's initial aircrew training program. Factors include the co-pilot's improper flare and his lack of total experience in this type of aircraft.