Aviation safety investigations & reports
Bell 47-G5, VH-AEO, 42 km NNW of Strathmore Station QLD, 27 May 1985
Investigation number:
198503512
198503512
Status: Completed

Summary
While flying at a slow forward speed approximately 15 feet above the trees, the helicopter suddenly yawed to the right. As the pilot was unable to correct the yaw he attempted to manoeuvre the helicopter to a clear area. The helicopter impacted the ground in a level attitude, heading rearward and rotating. Investigation revealed that all the teeth were missing from the forward short shaft rear coupling, which had failed due to lack of lubrication, and resulted in a loss of tail rotor propulsion. The coupling, which was covered by a rubber dust boot, had not received adequate daily inspections to ensure that it contained sufficient grease and was free of excessive play.
General details
Date: | 27 May 1985 | Investigation status: | Completed | ||
Time: | 1020 | ||||
Location: | 42 km NNW of Strathmore Station | ||||
State: | Queensland | ||||
Release date: | 20 August 1985 | Occurrence category: | Accident | ||
Report status: | Final | Highest injury level: | None |
Aircraft details
Aircraft manufacturer | Bell Helicopter Co | |
---|---|---|
Aircraft model | 47 | |
Aircraft registration | VH-AEO | |
Type of operation | Aerial Work | |
Sector | Helicopter | |
Damage to aircraft | Substantial | |
Departure point | 148 km East of Normanton QLD | |
Departure time | 1020 | |
Destination | 148 km East of Normanton QLD |