Narrative:

On takeoff roll lax runway 25R, at approximately 100 KTS, we got a master caution with a flap differential alert message (right outboard flap 25, left outboard flap indicated up), and all V speeds on the pfd airspeed indicator dropped off. I immediately aborted the takeoff. We advised the tower of our problem, the aborted ground speed, and that we did not need assistance. After aircraft speed was reduced enough, we turned off the runway and contacted ground control. We returned to the gate, and maintenance repaired the aircraft (computer problem). After repairs were made, we resumed the flight from lax to mco. The runway and WX conditions were very good. All checklists and communications with passenger, etc, were handled in a timely and correct manner. Under given circumstances, I felt it was the safest and best course of action.

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Original NASA ASRS Text

Title: WDB CREW ABORTS TKOF WHEN THEY RECEIVE A WARNING THAT THEY HAVE A SPLIT FLAP CONDITION.

Narrative: ON TKOF ROLL LAX RWY 25R, AT APPROX 100 KTS, WE GOT A MASTER CAUTION WITH A FLAP DIFFERENTIAL ALERT MESSAGE (R OUTBOARD FLAP 25, L OUTBOARD FLAP INDICATED UP), AND ALL V SPDS ON THE PFD AIRSPD INDICATOR DROPPED OFF. I IMMEDIATELY ABORTED THE TKOF. WE ADVISED THE TWR OF OUR PROBLEM, THE ABORTED GND SPD, AND THAT WE DID NOT NEED ASSISTANCE. AFTER ACFT SPD WAS REDUCED ENOUGH, WE TURNED OFF THE RWY AND CONTACTED GND CTL. WE RETURNED TO THE GATE, AND MAINT REPAIRED THE ACFT (COMPUTER PROBLEM). AFTER REPAIRS WERE MADE, WE RESUMED THE FLT FROM LAX TO MCO. THE RWY AND WX CONDITIONS WERE VERY GOOD. ALL CHKLISTS AND COMS WITH PAX, ETC, WERE HANDLED IN A TIMELY AND CORRECT MANNER. UNDER GIVEN CIRCUMSTANCES, I FELT IT WAS THE SAFEST AND BEST COURSE OF ACTION.

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.