What happened
On 7 November 1999, a Robinson R22 Beta, registration G-BYTE, was conducting a private flight near Brecon, Powys. The pilot's objective was to photograph a protest march, but due to difficulty locating the group, the decision was made to land and seek information locally.
While attempting to land in a green area adjacent to a track, the pilot performed a hover to assess the terrain. As the aircraft settled toward the ground, the pilot noted a rearward and downward movement. In an attempt to regain altitude, the pilot applied power; however, the helicopter began to spin, triggering the low rotor warning light and horn. In an effort to maintain control, the pilot placed the aircraft back onto the ground, which resulted in the helicopter rolling onto its right side.
Following the impact, the passenger found themselves positioned above the pilot in a manner that prevented them from unfastening their seatbelt. Neither occupant could exit the aircraft until bystanders arrived to assist by cutting the passenger's seatbelt. Both individuals eventually escaped through the left-hand door.
The investigation
The investigation was based on the accident report submitted by the pilot. The examination focused on the sequence of the landing attempt and the physical state of the aircraft following the rollover. The investigation established that the aircraft sustained damage to the gearbox bearer frame, the windscreen, the door, and the main rotor. The crew consisted of one pilot and one passenger, with the pilot sustaining minor injuries and the passenger suffering no injuries.
Findings
- The primary cause of the accident was the selection of an unsuitable landing site characterized by uneven ground.
- The movement of the aircraft during the landing phase led to a loss of control and a subsequent roll.