News story

Anniversary Statement: Boeing 747-433, G-ONEE

Electrical system failures during departure from London Heathrow Airport, 8 February 2024

This statement provides an update on the ongoing investigation into a serious incident involving a Boeing 747-433 aircraft which suffered electrical system failures during departure from London Heathrow Airport.

皇冠体育app aircraft departed in weather of rain, thick cloud, and icing conditions. Electrical failures resulted from water having leaked onto the aircraft鈥檚 avionic equipment 鈥� the effects of which included all pitot probe heaters becoming inoperative, and the cabin altitude increasing. 皇冠体育app crew began descending the aircraft from FL250 and experienced unreliable flight instrument indications. 皇冠体育appy diverted the aircraft to Amsterdam Schipol Airport, which had clear weather.

皇冠体育app investigation is ongoing and a final report will be published in due course.

Updates to this page

Published 7 February 2025