Narrative:

Pushback was 37 mins late due to late inbound aircraft and maintenance problem prior to push. Taxi out was short and no other traffic. First officer was fairly rushed due to low time in this aircraft, and with this airline, non-usual 'bleeds off' takeoff planned due to gross weight and shorter taxi. Takeoff clearance received and checklists completed although I failed to arm the autothrottles and this wasn't caught on checklist completed by first officer. At 'toga' activation during takeoff roll, throttles of course didn't advance to takeoff N1. I had advanced throttles close to takeoff N1 prior to 'toga' and I believed that we had obtained 'throttle hold' now. I manually advanced throttles to takeoff N1, not realizing autothrottle was off. At 5000 ft MSL level off, first officer proceeded with the remaining 'bleeds off takeoff' items and I distracted myself by watching this procedure due to first officer's low time in this type aircraft. Without throttles retarding, airspeed reached 300-310 KIAS at 5000 ft MSL level flight. Throttles were then manually retarded and aircraft slowed to 250 KIAS and autothrottle was selected. Airspeed was not questioned by ATC.

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Original NASA ASRS Text

Title: FLC ALLOWS ACFT TO EXCEED 250 KIAS BELOW 10000 FT. CAPT ADMITS THAT HE DID NOT ARM THE AUTOTHROTTLES PRIOR TO TKOF, YET HE OPERATED AS THOUGH THE AUTOTHROTTLES WERE FUNCTIONING.

Narrative: PUSHBACK WAS 37 MINS LATE DUE TO LATE INBOUND ACFT AND MAINT PROB PRIOR TO PUSH. TAXI OUT WAS SHORT AND NO OTHER TFC. FO WAS FAIRLY RUSHED DUE TO LOW TIME IN THIS ACFT, AND WITH THIS AIRLINE, NON-USUAL 'BLEEDS OFF' TKOF PLANNED DUE TO GROSS WT AND SHORTER TAXI. TKOF CLRNC RECEIVED AND CHKLISTS COMPLETED ALTHOUGH I FAILED TO ARM THE AUTOTHROTTLES AND THIS WASN'T CAUGHT ON CHKLIST COMPLETED BY FO. AT 'TOGA' ACTIVATION DURING TKOF ROLL, THROTTLES OF COURSE DIDN'T ADVANCE TO TKOF N1. I HAD ADVANCED THROTTLES CLOSE TO TKOF N1 PRIOR TO 'TOGA' AND I BELIEVED THAT WE HAD OBTAINED 'THROTTLE HOLD' NOW. I MANUALLY ADVANCED THROTTLES TO TKOF N1, NOT REALIZING AUTOTHROTTLE WAS OFF. AT 5000 FT MSL LEVEL OFF, FO PROCEEDED WITH THE REMAINING 'BLEEDS OFF TKOF' ITEMS AND I DISTRACTED MYSELF BY WATCHING THIS PROC DUE TO FO'S LOW TIME IN THIS TYPE ACFT. WITHOUT THROTTLES RETARDING, AIRSPD REACHED 300-310 KIAS AT 5000 FT MSL LEVEL FLT. THROTTLES WERE THEN MANUALLY RETARDED AND ACFT SLOWED TO 250 KIAS AND AUTOTHROTTLE WAS SELECTED. AIRSPD WAS NOT QUESTIONED BY ATC.

Data retrieved from NASA's ASRS site as of July 2007 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.