Casualties unknown

2007-08-13: Robinson R-22 BETA II (N453SH) — Silver State Helicopters — Tucson, AZ

Tucson, AZ, US

On August 13, 2007, a Robinson R-22 BETA II (registration N453SH) operated by Silver State Helicopters was involved in an aviation accident near Tucson, AZ. Investigators recorded the probable cause as: The student pilot's failure to maintain rotor RPM during landing approach, and the delayed remedial action by the flight instructor. A contributing factor was the high density altitude weather condition. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

During a cross-country training flight, the helicopter experienced a yaw and low rotor RPM while attempting an off-airport landing, resulting in main rotor contact with terrain and tail boom separation.

Accident Overview

A helicopter conducting a cross-country training flight with a flight instructor and a student sustained damage during a landing attempt at an off-airport site. The landing zone was at an elevation of 4,500 feet mean sea level (msl), with a reported density altitude of 7,300 feet msl.

Pilot Statements

The flight instructor reported that the student was performing the off-airport landing when the helicopter began to yaw to the right. The left pedal was ineffective in countering the yaw. The instructor then took control of the aircraft and observed that the main rotor RPM was low. He lowered the collective slightly and added throttle, but the left pedal still did not turn the helicopter into the wind. He lowered the collective again, allowed the helicopter to settle, and then pulled collective to cushion the landing.

Aircraft Damage

During the landing, the main rotor contacted the terrain and mesquite shrub. The aircraft came to rest on its left side, facing the direction from which it arrived. The tail boom separated from the fuselage.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20070831X01278. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.