On 26 February 2020, an Airbus A330-300 tailstrike occurred during rotation for takeoff from Zurich and was not detected by the crew who completed the planned 7½ hour flight to Nairobi before learning that the aircraft was not airworthy as a result. The Investigation concluded that the tailstrike had been the direct result of the crew’s use of inappropriate inputs to their takeoff performance calculation on the variable headwind encountered during the takeoff and noted a very similar event had previously occurred to the same aircraft type operated by an airline within the same overall ownership.
Description
On 26 February 2020, an Airbus A330-300 (HB-JHC) being operated by Swiss International Airlines on a scheduled international passenger flight from Zurich to Nairobi and then on to Dar es Salaam as LX294 became airborne in day VMC at an excessive pitch attitude and the occurrence of a tail strike was not recognised by either the flight or cabin crew or by ATC. The flight to Nairobi was therefore completed but on arrival, the station engineer there advised the Captain that the rear fuselage showed evidence of a tailstrike which rendered the aircraft un-airworthy. It was therefore withdrawn from service and the leg to Dar es Salaam was cancelled. After consultation with Airbus, a temporary repair was eventually approved and completed 12 days later.
Investigation
A Serious Incident Investigation was carried out by the Swiss Transportation Safety Investigation Board (STSB). Relevant data from the DFDR was downloaded but relevant data on the CVR had been overwritten.
It was noted that the Captain, (a Swiss citizen born 1964) had a total of 14,931 hours total flying experience which included 3,933 hours on type and the First Officer (a German citizen born 1988) who was acting as PF for departure, had a total of 3,889 hours flying experience which included 429 hours on type.
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