Casualties unknown

2007-07-28: Bell 206L-1 (N90AE) — Marks, MS

Marks, MS, US

On July 28, 2007, a Bell 206L-1 (registration N90AE) was involved in an aviation accident near Marks, MS. Investigators recorded the probable cause as: The loss of control and hard landing as result of the loss of tail rotor effectiveness. A contributing factor was the prevailing dark night conditions. 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
Aircraft registered N90AE
Aircraft registered N90AE. Photo: Pedro Aragão / CC BY-SA 3.0, via Wikimedia Commons

A commercial pilot reported a hard landing after a right turn and torque increase. The helicopter landed short of the helipad, collapsing landing gear. No mechanical issues were found.

Accident Sequence

The commercial pilot reported that the wind sock atop the hospital was limp prior to starting the engine. The helicopter was parked on a westerly heading when the patient was loaded. The pilot brought the helicopter to a hover, then executed a right hovering turn to the right for a planned departure on a northerly heading. He initiated a vertical takeoff on a northerly heading to clear obstacles. After reaching an altitude that allowed the rotor system to be slightly above the trees, the aircraft began a slow turn to the right. The pilot countered with left anti-torque pedal, and the torque increased to 101 percent. He then backed out on the amount of left pedal input. The pilot attempted to nurse the aircraft at the 100 percent torque indication to avoid an engine over-torque condition. He lowered the collective as he attempted to remain over the helipad and land. The rate of turn to the right decreased somewhat but was not totally arrested. The helicopter landed hard while on a left yaw on a grassy area approximately 20 feet short of the helipad. The landing gear collapsed, and the helicopter came to rest on its left side.

Investigation Findings

The investigation revealed that the helicopter was within weight and balance limits at the time of the mishap. The helicopter was recovered to a secured location for further investigation. Flight and engine control continuity was established. No mechanical discrepancies were found with the helicopter or the powerplant.

Pilot Experience

The 3,884-hour helicopter pilot reported having accumulated 83 hours in the last 90 days and 21.3 hours within the last 30 days. The pilot reported that he was familiar with the mission and had operated from the same heliport on previous occasions.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20070731X01064. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.