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Originally Posted by MarkR
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ATSB issues safety notice on pitot probes after MAS A330 incident
The Australian Transport Safety Bureau (ATSB) has issued a safety advisory notice after a Malaysia Airlines (MAS) Airbus A330-300 took off from Brisbane Airport without the covers for the aircraft’s three pitot probes being removed.
The ATSB preliminary report on the July 18 2018 incident, published on Thursday, said an inspection of the aircraft prior to departure “did not identify the presence of the pitot probe covers and they were not removed prior to the aircraft’s departure”.
As a result, the aircraft, 9M-MTK, pushed back from the gate and proceeded to Runway 01 for takeoff with its three pitot probes, which are used to measure airspeed, covered by tightly woven Kevlar sheaths about 12cm long with a 30cm streamer.
The ATSB report said the flightcrew had detected an airspeed anomaly during the takeoff roll, including red speed (SPD) flags on both primary flight displays (PFD).
It said there was no indication on the recording from the cockpit voice recorder that the captain – who was the pilot monitoring and who held responsibility for the decision to reject the takeoff or continue – and the first officer, as the pilot flying, discussed rejecting the takeoff.
After takeoff, the flightcrew carried out actions for unreliable airspeed indications and made a PAN call to air traffic control (ATC), advising they had unreliable airspeed indications.
The flightcrew then flew the aircraft to the north-east of Brisbane Airport where they carried out several checklists, troubleshooting and preparing for an approach and landing on runway 01.
“In accordance with published procedures, the flightcrew turned off the three air data reference systems (ADRs),” the ATSB preliminary report said.
“This activated the aircraft’s backup speed scale (BUSS), which provided a colour-coded speed scale derived from angle of attack and other information, and altitude derived from GPS data. The flightcrew also obtained groundspeed information from ATC, and used the aircraft’s radar altimeter.”
http://australianaviation.com.au/201...a330-incident/