A319
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 225; Flight Crew Total 30000; Flight Crew Type 13000
Human-Machine Interface
Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Flight Crew Overcame Equipment Problem; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Human Factors; Aircraft
Failed to level off at FL310 and caught error at about 30;650. First Officer failed to reset alt to standard after putting in field altimeter. Advised ATC we were about 350 feet low. Cleared us for descent via at that time.
A319 Captain describes an altitude deviation caused by the First Officer pulling the baro set knob to set QNH and forgetting to push it back in for QNE. This results in a 350 foot overshoot while descending to FL310.