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G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 2.

on the door mat and the aircraft floor area around the mat. The commander, a training captain, operated as Pilot Flying (PF) in the right-hand seat. A trainee captain, operating one of his first line training flights on this aircraft
Open official document at PDF page 2AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 3.

inoperative (Figure 1). It states ‘Avoid icing conditions' which ‘may result in unreliable captain's… standby… [and] first-officer's flight instrument indications'. The commander requested radar vectors while maintaining FL250, saying “we'd like to stay clear of icing… as bes
Open official document at PDF page 3AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 6.

downloaded. Instrument readings recorded by the FDR are predominantly sourced from the captain's side. This is a limitation during periods where there is a potential difference between the captain's and co-pilot's instrument readings such as flying through icing condition
Open official document at PDF page 6AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

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Bulletin: G-ONEE AAIB-29853 it was iced, is consistent with pitot probe icing. Only the captain's IAS, nominally from the left Air Data Computer (ADC), was recorded. However, faults recorded by the AHM indicated that at some point between 0849 hrs
Open official document at PDF page 10AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 15.

probes and four flush static ports. The airspeed and altitude information on both the captain's and co-pilot's Primary Flight Displays are determined based on the pitot and static pressures sensed by the four combined pitot-static probes. The airspeed and altitude
Open official document at PDF page 15AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 19.

AAIB Bulletin: G-ONEE AAIB-29853 ‘Use of Captain's Discretion The flight crew must be aware that checklists cannot be created for all conceivable situations and are not intended to replace good judgment. In some situations, at
Open official document at PDF page 19AAIB final report: G-ONEE