Concerned at their slow rate of acceleration; the flight crew of a ce-525 rejected their takeoff and...

Narrative:

During the take-off I noticed that the aircraft was not accelerating normally. I let the takeoff continue to see if the problem would correct itself. When passing the mid point of the runway I noticed that the speed was only at 85 KTS with a slow climbing trend. I called the abort and simultaneously with the captain applied hard braking pressure; along with moving the flaps to the 60 degree position. The aircraft immediately slowed to a controllable ground airspeed. We were planning on exiting the end of the runway when; at approximately 15 KTS; the left-hand brake froze and the aircraft veered 45 degrees to the left; stopping just short of the exit but still on the runway. We notified tower that we were unable to move the aircraft and that a tow would be required. Shortly after we deplaned the passengers; and the aircraft was eventually moved from the runway.

Original NASA ASRS Text

Title: Concerned at their slow rate of acceleration; the flight crew of a CE-525 rejected their takeoff and experienced a locked left brake shortly before exiting the runway.

Narrative: During the take-off I noticed that the aircraft was not accelerating normally. I let the takeoff continue to see if the problem would correct itself. When passing the mid point of the runway I noticed that the speed was only at 85 KTS with a slow climbing trend. I called the ABORT and simultaneously with the Captain applied hard braking pressure; along with moving the flaps to the 60 degree position. The aircraft immediately slowed to a controllable ground airspeed. We were planning on exiting the end of the runway when; at approximately 15 KTS; the left-hand brake froze and the aircraft veered 45 degrees to the left; stopping just short of the exit but still on the runway. We notified Tower that we were unable to move the aircraft and that a tow would be required. Shortly after we deplaned the passengers; and the aircraft was eventually moved from the runway.

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.

Attributes
ACN	945558
Time
Date	201104
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Citationjet (C525/C526) - CJ I / II / III / IV
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Component
Aircraft Component	Normal Brake System
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Concerned at their slow rate of acceleration; the flight crew of a ce-525 rejected their takeoff and experienced a locked left brake shortly before exiting the runway.