A300
Flight Crew Last 90 Days 30; Flight Crew Total 9200; Flight Crew Type 2750
Confusion
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented; General Declared Emergency
Human Factors
At approximately 1;200 FT; while turning final; the Number 2 Engine rolled back. The First Officer noticed immediately. I had just disconnected the autopilot; and pressed the autopilot noise cancellation button. The cancel button is located near the fuel lever. I do not know if I bumped the fuel lever off; but it is hard to figure how because the switch has a detent. We declared an emergency and landed uneventfully.
I was running the Landing Checklist and noticed on the right ECAM the Number 2 Engine was rolling back. I looked down and saw the Number 2 fuel lever was not in the on detent and significantly farther back than the Number 1. I told the Captain the Number 2 fuel lever was off; turned it back on momentarily to see if the engine would recover; it did not. The Captain directed me to declare an emergency which I did.
A300 flight crew reported while turning final the Captain inadvertently shut down Number 2 Engine while trying to cancel the autopilot disconnect warning horn.