AAIB investigation to Airbus A319-131, G-DBCB
Fumes in the cockpit when descending to London Gatwick Airport, 21 October 2016.
Summary:
皇冠体育app day before the incident, during a cross-bleed engine start, the co-pilot noticed a brief acidic smell that returned just before takeoff and twice during the climb. 皇冠体育app commander was unable to detect anything unusual until they were in the cruise, when the smell returned with increasing intensity. 皇冠体育app smell was strongest in the area of the co-pilot鈥檚 rudder pedals and side-stick controller but there were no symptoms in the passenger cabin. 皇冠体育app crew initiated the Smoke/Fire/Fumes emergency checklist and with the smell becoming stronger, they diverted to Bordeaux, where the landing was uneventful.
皇冠体育app smell could not be reproduced on the ground but the avionics blower fan was inhibited before the aircraft departed the following day on a re-positioning flight to London Gatwick. 皇冠体育app smell returned when the crew initiated their descent and they donned their oxygen masks and declared a PAN.
Investigation by the operator did not identify the definitive source of the smell, although a number of components were replaced. 皇冠体育appse included the right brake master cylinder which was found to be leaking hydraulic oil. 皇冠体育app aircraft has completed over 30 flights since the incident without recurrence.
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