Flight History
On 17 November 2017, an Airbus A320-214 registered EC-HQJ, operated by Vueling Airlines as flight VY6204, departed from Geneva-Cointrin airport (Switzerland) bound for Barcelona El Prat (Spain). The flight was cleared to line up and take off from runway 05 behind a Cessna Citation Excel. Shortly after takeoff, the flight crew noticed a strong odor of exhaust gases. The captain reported feeling nauseous, and the first officer (FO) confirmed a very strong smell. The crew discussed the odor and contacted air traffic control to inquire about the preceding aircraft.
Crew Symptoms and Decisions
As the aircraft climbed through flight levels, both pilots experienced worsening symptoms, including dizziness and nausea. The FO left the cockpit temporarily to use the lavatory. The captain donned his oxygen mask, and the FO later did the same. They decided to divert to Marseille-Provence airport, declaring a PAN PAN at 09:13:36, citing crew incapacitation. The aircraft was vectored for an ILS approach to runway 13L, landing without further incident at 09:36.
Post-Flight Medical Checks
After landing, the flight crew were taken to hospital. Blood tests showed no sign of carbon monoxide poisoning. No other toxicological analyses were carried out. However, nausea and dizziness alternated with periods of respite for several days following the incident.
Investigations and Maintenance
The aircraft remained at Marseille for maintenance inspections, including tests related to cabin odors and engine operation. No anomalies were found. Additional searches during a 20-month inspection also revealed no issues. The preceding Cessna Citation Excel was examined; only one minor chip detector event was noted two days after the incident, which was not linked to the odor. No technical faults were identified.