Originally Posted by
Octane
That some of the occupants were not strapped in is disturbing...
4.6.8. The four rear seats (positions D, E, F and G) were each fitted with a three-point harness
comprising a lap belt and single shoulder harness. The person in seat F, directly behind seat
B, was retained in his seat. The person to his right, in seat E, was thrown clear of the rolling
helicopter despite his seatbelt remaining buckled. Both lap belt connections for this
passenger were found to be nearly fully extended. This would have given a very loose fit
around the waist and, like the pilot, he most likely slipped up through his lap belt.
4.6.9. The seatbelts for seats D and G were found to be released and both persons had been
ejected from the helicopter as it rolled down the mountain. Although it was possible that the
buckles were deliberately released, it was more likely that something caught the buckles
while the helicopter was rolling down the slope and released the seatbelts. The lap belts for
seats D and G were found at or near full extension, which would have given a very loose fit
around the waist.
4.6.10. The seatbelt catch mechanism was a common design found in most passenger aircraft
around the world. To release the belt, the lever had to be pulled up nearly 70º. The lap belts
being extended would have made it easier for the passengers to locate and fasten them after
boarding. However, if a belt remains loose around the waist the chances of something
inadvertently catching the semi-guarded release lever increase. Therefore, after buckling up
the straps the two lap belts should be pulled as tight as possible to minimise movement in
the event of an accident. It also reduces the possibility of the buckle being inadvertently
released. Only after landing, and when about to depart the aircraft, should the buckle be
released.
4.6.11. On 20 November 2015 the operator issued a notice to all staff reminding them that seatbelts
were to be fitted “snug across the hips”.