Summary
As part of an endorsement training exercise the captain operated the emergency electrical Bus to simulate an electrical fire. When the Bus was selected all electrical power was removed from the aircraft. Later examination found a broken wire in a relay box. It was found that the fault was not detected during previous maintenance test/checks because the test circuit goes to the earth side of the circuit, and the breakage occurred on the power side.
The operator is currently corresponding with the aircraft manufacturer to recommended a change to the maintenance manual procedural checks that will identify any similar faults during ground tests.
Occurrence summary
| Investigation number | 199502647 |
|---|---|
| Occurrence date | 04/07/1995 |
| Location | Cairns Aerodrome |
| State | Queensland |
| Report release date | 14/12/1995 |
| Report status | Final |
| Investigation type | Occurrence Investigation |
| Investigation status | Completed |
| Mode of transport | Aviation |
| Occurrence class | Incident |
Aircraft details
| Manufacturer | Embraer-Empresa Brasileira De Aeronautica |
|---|---|
| Model | EMB-110P2 |
| Registration | VH-FNR |
| Sector | Turboprop |
| Operation type | Air Transport Low Capacity |
| Departure point | Cairns QLD |
| Destination | Cairns QLD |
| Damage | Nil |