Summary
Circumstances:
At approximately 15 feet above the ground after take-off from a confined area, the engine began to run roughly. The pilot's attention was distracted by the rough running, and he failed to see a large overhanging branch. The main rotor blades struck the branch and the pilot lost control of the helicopter which touched down heavily on its left hand side. The rough running had been caused by oil deposits on the spark plugs.
Significant Factors:
The following factors were considered relevant to the development of the accident:
- The pilot was operating from a confined area.
- Engine malfunction caused by oil deposits on the spark plugs.
- The pilot was distracted by the engine malfunction.
Occurrence summary
| Investigation number | 198900254 |
|---|---|
| Occurrence date | 30/10/1989 |
| Location | 100 km north-east of Kununurra |
| State | Western Australia |
| Report release date | 24/01/1990 |
| Report status | Final |
| Investigation type | Occurrence Investigation |
| Investigation status | Completed |
| Mode of transport | Aviation |
| Occurrence class | Accident |
| Highest injury level | None |
Aircraft details
| Manufacturer | Robinson Helicopter Co |
|---|---|
| Model | R22 |
| Registration | VH-UXM |
| Serial number | 422 |
| Sector | Helicopter |
| Operation type | Aerial Work |
| Departure point | 100 km NE Kununurra WA |
| Destination | Kununurra WA |
| Damage | Substantial |