Summary
The right engine failed on descent into Devonport. The engine was shut down and the aircraft landed without incident.
The engine was disassembled, and it was found that the gas generator second stage cooling plate had disintegrated. Extensive foreign object damage had affected the remaining components of the gas generator turbine.
Failure of the second stage cooling plate was a problem known to the manufacturer. A modified plate of improved durability had been introduced by SB72-352. The failed unit was of pre-modification status. As well as progressive introduction of the improved plates into the fleet when the engines are overhauled, the area is subject to regular borescope inspections.
Occurrence summary
| Investigation number | 199301240 |
|---|---|
| Occurrence date | 06/05/1993 |
| Location | Devonport |
| State | Tasmania |
| Report release date | 28/03/1994 |
| Report status | Final |
| Investigation type | Occurrence Investigation |
| Investigation status | Completed |
| Mode of transport | Aviation |
| Aviation occurrence category | Engine failure or malfunction |
| Occurrence class | Incident |
Aircraft details
| Manufacturer | Saab Aircraft Co. |
|---|---|
| Model | SF-340A |
| Registration | VH-KDI |
| Sector | Turboprop |
| Operation type | Air Transport Low Capacity |
| Departure point | Melbourne VIC |
| Destination | Devonport TAS |
| Damage | Nil |