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G-ONEE: electrical failures and unreliable airspeed

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to deal with the system failures, declared a PAN and started to divert to Amsterdam Schiphol Airport. When a pressurisation issue caused the crew to initiate a descent, the aircraft entered icing conditions and the pitot tubes froze, resulting in
Open official document at PDF page 1AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

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for VMC during descent and arrival. Other aircraft on frequency suggested Amsterdam Schiphol Airport (Schiphol). The ATCO confirmed Schiphol's weather was clear with no significant weather, wind 5 kt, and temperature 4°C, and gave alternatives of Newcastle, Glasgow, an
Open official document at PDF page 3AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

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remained in clear air for the remainder of the flight. The main landing runway in use at Schiphol was 36R but ATC offered the possibility of using Runway 06 which the crew accepted. As they began configuring the aircraft to
Open official document at PDF page 4AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

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UK heading east. Several diversion options were suggested by ATC. The crew considered Schiphol to be the best alternative, as it offered a selection of long runways. This choice was further supported by positive confirmation from another crew who had
Open official document at PDF page 6AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

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Aircraft examination Initial aircraft examinations After the aircraft arrived at Amsterdam Schiphol Airport the engineer onboard carried out initial troubleshooting. He noticed that the circuit breaker on GCU 4 had tripped and when he removed the GCU, a few drops
Open official document at PDF page 20AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

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band of severe icing below FL130 between London Heathrow Airport (LHR) and Amsterdam Schiphol Airport (AMS) (yellow area in Figure 18). Extracts from the report are included for the relevant airfields: ‘On the morning of the 8th February 2024, the
Open official document at PDF page 27AAIB final report: G-ONEE