A319
Flight Crew Air Transport Pilot (ATP)
Human-Machine Interface; Confusion; Training / Qualification
Aircraft Equipment Problem Less Severe
Aircraft; Human Factors; Manuals
While enroute approaching cruise altitude of FL350; encountered a 'AUTO FLT FCU 2 FAULT'. The Captain was the pilot flying and I was the pilot not flying. Waiting to level-off before completing steps in the QRH (computer reset); we discussed the procedure. After level-off; we followed the 'in-flight' procedural steps; to include the 'wait 5 seconds'. Due to a lack of clear; concise procedural steps after the 'wait 5 seconds' -in flight- portion we were uncertain of procedural completion; additional actions or problem resolution. There is no end of procedure or directive to indicate if one is required to finish using the steps listed under 'on ground'; (incorrect phase) but further down to the computer reset items. Otherwise; it does not specify if you leave the M21 CB out; or where to correct the barometer reference. Without clarity; we were lead incorrectly to 'finish' the procedure incorrectly setting a AUTO FLT 1+2 FAULT; (pulling the CB; 7 minute delay; loss of autopilot; loss of auto thrust; etc); which complicated the original fault. FCU reset needs additional structure and stronger procedural outline in order to safely; effectively and COMPLETELY address the fault. The phase of flight should be in bold; not the wait 5 seconds. The similarity can lead to inadvertent following of incorrect procedure which could prove excessive or potentially unsafe depending on phase of flight.
A319 First Officer reports being confused by the QRH FCU reset procedure after receiving an ECAM for AUTO FLT FCU 2 FAULT in cruise.