Narrative:

Go-around sna. Aircraft was on speed configured at 1000 ft AGL; approach was stable to about 20 ft AGL when the aircraft made a short and sharp rolling motion; possibly wake turbulence. Simultaneously the aircraft began to retard the throttles. This felt like it was too high to retard for a flaps 40 landing so I overrode the auto throttles and added power causing the aircraft to float as I lowered the nose to put the aircraft on the ground before the end of the touchdown zone. The captain called for a 'go around.' I initiated the go-around per his command as the speed brakes deployed. He caught the speed brakes and missed the 'flaps 15' call. Given the takeoff configuration warning horn due to speed brake deployment in the cockpit; I may not have said it loud enough for him to hear. At approximately 400 ft AGL I didn't think climb performance was normal so I repeated the go-around procedure steps to make sure I didn't miss anything. I pressed toga; this time engaging maximum GA power and called for flaps 15. As I did I noted the flaps were still in the landing configuration so I performed the task myself in the interest of time. ATC gave us a 2000 ft MSL level off; a right hand turn and climb to 3000 ft MSL put us on a right downwind for a normal visual pattern flown to a normal landing.

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Original NASA ASRS Text

Title: A B737 crew on short final to SNA encountered a minor turbulence upset and a simultaneous thrust lever closure with Flaps 40. The First Officer made a small thrust increase to cushion the landing causing the aircraft to float. The Captain ordered a go around.

Narrative: Go-around SNA. Aircraft was on speed configured at 1000 FT AGL; approach was stable to about 20 FT AGL when the aircraft made a short and sharp rolling motion; possibly wake turbulence. Simultaneously the aircraft began to retard the throttles. This felt like it was too high to retard for a flaps 40 landing so I overrode the auto throttles and added power causing the aircraft to float as I lowered the nose to put the aircraft on the ground before the end of the touchdown zone. The Captain called for a 'Go Around.' I initiated the go-around per his command as the speed brakes deployed. He caught the speed brakes and missed the 'flaps 15' call. Given the Takeoff Configuration Warning Horn due to speed brake deployment in the cockpit; I may not have said it loud enough for him to hear. At approximately 400 FT AGL I didn't think climb performance was normal so I repeated the go-around procedure steps to make sure I didn't miss anything. I pressed TOGA; this time engaging maximum GA power and called for flaps 15. As I did I noted the flaps were still in the landing configuration so I performed the task myself in the interest of time. ATC gave us a 2000 FT MSL level off; a right hand turn and climb to 3000 FT MSL put us on a right downwind for a normal visual pattern flown to a normal landing.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.