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| Date: | Monday 27 May 2024 |
| Time: | 14:05 |
| Type: |  Lockheed L-188A Electra |
| Owner/operator: | Air Spray |
| Registration: | C-FDTH |
| MSN: | 1038 |
| Engine model: | Allison 501D-13 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Location: | 23 nm W of Manning Aerodrome (CFX4), AB -
 Canada
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Fire fighting |
| Departure airport: | Manning Aerodrome (CFX4), AB |
| Manning Aerodrome (CFX4), AB | |
| Investigating agency: | TSB |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
An Air Spray Ltd. Lockheed L-188A was conducting aerial firefighting operations as ASB498 locally from Manning Aerodrome (CFX4), AB, on Alberta wildfire #PWF037, (23 NM W of CFX4). On the second flight of the day, while on short final for the second drop, the fire reached a
taller tree patch, which rapidly increased the intensity of the fire. This resulted in a rapid increase in fire activity and temperatures on the left side of the aircraft. The captain called for an increase in power. While power was being advanced, a temperature spike of 1040° F was noticed on the # 1 engine and was identified by the co-pilot. The flight crew observed the # 1 engine propeller speed drop and the captain called for an engine failure drill on the # 1 engine (Allison 501D-13). While securing the # 1 engine, the # 2 engine temperature spiked to 1040° F. The captain noticed the decreased performance, confirmed with power lever application and observed no change. The flight crew determined that the engine de-coupled and conducted the engine failure drill on the # 2 engine. Both engines were confirmed shutdown and propellers feathered.
Once at a safe altitude, the emergency checks were completed, and a 2-engine landing was briefed. An emergency was declared and the aircraft returned to CFX4 where the aircraft landed without further issue.
Sources:
TSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Jun-2024 17:23 | ASN | Added |
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