Summary
The flight proceeded normally until on approach to Adelaide Airport, when the pilot found he could not extend the landing gear. The emergency system was also tried but still no gear down indication could be obtained.
A wheels up landing was then made on runway 30.
Later inspection of the gear system revealed that on the last gear up selection a gear motor over-run had occurred. This caused the gear to be jammed in the up position and for the emergency gear extension mechanism to be damaged. The reason for the gear motor over-run was a defect in the dynamic brake relay which prevented the motor operation from ceasing in the normal up position.
Significant Factors
The following factors were considered relevant to the development of the incident:
1. A dynamic brake relay was defective.
2. The emergency gear extension system became damaged as a result of the defective dynamic brake relay.
Occurrence summary
| Investigation number | 199300526 |
|---|---|
| Occurrence date | 16/03/1993 |
| Location | Adelaide Airport |
| State | South Australia |
| Report release date | 27/10/1994 |
| Report status | Final |
| Investigation type | Occurrence Investigation |
| Investigation status | Completed |
| Mode of transport | Aviation |
| Aviation occurrence category | Wheels up landing |
| Occurrence class | Accident |
Aircraft details
| Manufacturer | Beech Aircraft Corp |
|---|---|
| Model | 58 |
| Registration | VH-SMW |
| Sector | Piston |
| Operation type | Charter |
| Departure point | Port Lincoln SA |
| Destination | Adelaide SA |
| Damage | Substantial |