A B737 flight crew abort takeoff after losing both generators.

Attributes
ACN	624794
Time
Date	200407
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : las.airport
State Reference	NV
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 140 flight time total : 26000 flight time type : 4000
ASRS Report	624794
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Experience	flight time last 90 days : 90 flight time total : 6000 flight time type : 3000
ASRS Report	624793
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	aircraft : equipment problem dissipated flight crew : rejected takeoff
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Due to a heavy B737-800 on a hot day in las vegas, the APU was on in case of engine shutdown due to traffic or bleeds off. Taxied to long runway at runway 7L and waited for clearance for some time due to heavy arrival and departure traffic. Got takeoff clearance. As power was added, generators dropped off line. Takeoff was aborted at 10 KTS. Taxied off runway 7L. I hit both generators back on line. As soon as power tripped off, APU was still on but not on bus. Went through QRH procedures and called las maintenance, no history. No warning lights on, all frequencys/volts normal. Nothing found wrong with any system. We both agreed the electric jet had done something weird. We briefed the passenger and the crew, redid all checklists and told las we were on our way to destination. Wrote up all proper reports at destination and debriefed maintenance upon arrival. Flight to destination was normal in all respects.

Original NASA ASRS Text

Title: A B737 FLT CREW ABORT TKOF AFTER LOSING BOTH GENERATORS.

Narrative: DUE TO A HVY B737-800 ON A HOT DAY IN LAS VEGAS, THE APU WAS ON IN CASE OF ENG SHUTDOWN DUE TO TFC OR BLEEDS OFF. TAXIED TO LONG RWY AT RWY 7L AND WAITED FOR CLRNC FOR SOME TIME DUE TO HVY ARR AND DEP TFC. GOT TKOF CLRNC. AS PWR WAS ADDED, GENERATORS DROPPED OFF LINE. TKOF WAS ABORTED AT 10 KTS. TAXIED OFF RWY 7L. I HIT BOTH GENERATORS BACK ON LINE. AS SOON AS PWR TRIPPED OFF, APU WAS STILL ON BUT NOT ON BUS. WENT THROUGH QRH PROCS AND CALLED LAS MAINT, NO HISTORY. NO WARNING LIGHTS ON, ALL FREQS/VOLTS NORMAL. NOTHING FOUND WRONG WITH ANY SYS. WE BOTH AGREED THE ELECTRIC JET HAD DONE SOMETHING WEIRD. WE BRIEFED THE PAX AND THE CREW, REDID ALL CHKLISTS AND TOLD LAS WE WERE ON OUR WAY TO DEST. WROTE UP ALL PROPER RPTS AT DEST AND DEBRIEFED MAINT UPON ARR. FLT TO DEST WAS NORMAL IN ALL RESPECTS.

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.