ASN Wikibase Occurrence # 246242
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| Date: | Wednesday 23 December 2020 |
| Time: | 13:52 LT |
| Type: |  ATR 72-600 (72-212A) |
| Owner/operator: | PNG Air |
| Registration: | P2-ATB |
| MSN: | 1317 |
| Fatalities: | Fatalities: 0 / Occupants: 61 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | near Mount Hagen Airport, Western Highlands -
 Papua New Guinea
|
| Phase: | Approach |
| Nature: | Passenger - Scheduled |
| Departure airport: | Kiunga Airport (UNG/AYKI) |
| Mount Hagen-Kagamuga Airport (HGU/AYMH) | |
| Investigating agency: | AIC PNG |
| Confidence Rating: |  Accident investigation report completed and information captured |
An ATR 72-600 aircraft operated by PNG Air Limited was on approach to runway 30 at Kagamuga Airport, Mount Hagen, PNG when a fire warning from engine No. 2 was triggered.
As the aircraft turned onto the final approach path, the crew shut down Engine No.2. While establishing on final approach, the crew pulled the respective Fire Handle for Engine No.2 and subsequently discharged the extinguishing agent No.1 while passing 500 ft AGL. As the aircraft was passing through 100ft, the fire warning went off. About 25 seconds later the crew
discharged agent No. 2, completing the procedure.
The investigation determined that the aircraft did not sustain an Engine No.2 fire. The Operator’s post occurrence maintenance records and statements also confirmed that there were no defects identified by their engineers to indicate an engine fire. The engine was found to be serviceable, and the aircraft was released back to service.
The engine fire warning and alarm observed by the crew on the day was, instead, an undue alarm. The investigation confirmed that the false alarm activation was a result of the aircraft being on a steep descent, in the landing configuration with power at flight idle. These were the flight condition criteria specified by the Manufacturer as conducive to an engine fire warning. The nacelle ventilation reduced causing the nacelle temperature to increase. When the temperature increased and reached the engine fire warning specifications, the fire warning alarm was triggered
Accident investigation:
 |
|
Sources:
https://www.aic.gov.pg/news/718
https://www.flightradar24.com/data/aircraft/p2-atb#26631dce
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Dec-2020 19:36 | harro | Added |
| 25-Dec-2020 19:39 | harro | Updated [Aircraft type, Registration, Cn, Phase, Nature, Departure airport, Source, Narrative] |
| 25-Dec-2020 19:41 | harro | Updated [Location] |
| 26-Dec-2020 08:20 | harro | Updated [Departure airport] |
| 07-Jun-2022 18:51 | harro | Updated [Time, Total occupants, Damage, Narrative, Accident report] |
| 25-Jun-2023 11:05 | Ron Averes | Updated [[Time, Total occupants, Damage, Narrative, Accident report]] |
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