ASN Wikibase Occurrence # 183947
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| Date: | Thursday 10 December 2015 |
| Time: | 21:05 LT |
| Type: |  Canadair CL-600-2D24 Regional Jet CRJ-900LR |
| Owner/operator: | Eurowings, opf Lufthansa Regional |
| Registration: | D-ACNP |
| MSN: | 15259 |
| Fatalities: | Fatalities: 0 / Occupants: 48 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Genève-Cointrin Airport (GVA/LSGG) -
 Switzerland
|
| Phase: | Initial climb |
| Nature: | Passenger - Scheduled |
| Departure airport: | Genève-Cointrin Airport (GVA/LSGG) |
| Düsseldorf Airport (DUS/EDDL) | |
| Investigating agency: | STSB |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
The aircraft was taxiing for takeoff on a scheduled flight to Dusseldorf (EDDL) when a stale smell was noticed in the
cockpit. After takeoff, the smell persisted throughout the climb and was also noticed in the cabin. The first officer donned his oxygen mask as he began to feel hampered in his work. A Pan Pan urgency call was made and the flight returned for a landing in Geneva, about 35 minutes after takeoff.
Conclusions
After various examinations, it seems likely that the marked soiling of the filter cartridges with dust is related to the unusual smell that has spread in the cockpit and cabin. It is therefore likely that due to the reduced air flow through the filters, the recirculation fan bearings overheated and emitted an irritating odour.
The fact that during the flight of the incident, the MDC did not record a status message and that the flight crew did not report such a message suggests that the recirculation fan motor thermal switch was not activated. The reason why an automatic deactivation of the fan re-circulation(s) by their respective thermal switch could not be established.
The flight crew's decision to stop the flight and return to Geneva was made for safety reasons.
Several crew members experienced a deterioration in their health and abilities.
Therefore, it is difficult to understand why a flight crew member did not use his oxygen mask when available. As regards reactions to toxic substances, it should be stressed that they do not have the same effects on everyone. Even if you do not temporarily feel uncomfortable, it is not wise to give up protective measures until the first negative symptoms appear.
Accident investigation:
 |
|
Sources:
http://www.sust.admin.ch/pdfs/AV-berichte/D-ACNP.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Jan-2016 19:38 | harro | Added |
| 18-Jul-2018 07:50 | harro | Updated [Narrative] |
| 18-Jul-2018 07:51 | harro | Updated [Time, Total occupants] |
| 18-Jul-2018 08:15 | harro | Updated [Narrative] |
| 20-Jul-2018 06:43 | GeoffR | Updated [Narrative] |
Corrections or additions? ... Edit this accident description
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