FA10 flight crew reported a runway excursion after a failed high speed brake test.

Narrative:

The brakes on our aircraft had been worked on and the repair station told us they had been repaired and asked us to do a high-speed taxi test of the brakes. When we asked for the taxi test on [the] runway; the tower said that we should expect considerable delay and pointed out that there were several aircraft in the queue for the runway. A controller came on asked us if we were ready for the taxi test immediately. We said; 'yes'. As pilot flying; I advanced the power levers to full power and released the brakes which had tested normally during the taxi. We accelerated to about 90 knots and then immediately applied the brakes. Much to my surprise the aircraft pulled strongly to the right due to the fact that the left antiskid had disabled the brakes on the left side.I came close to hitting a runway edge light on the right side. I partially released the right brakes and used the tiller to steer back to the left. With that it became apparent that we were not going to stop before reaching the runway end. I used the tiller to straddle a light at the runway end. The airplane stopped on the chevrons of the emergency overrun. We made a 180-degree turn back to the runway with no damage to the airplane or to any lights. I had fully expected the brakes on both sides to work. I felt rushed by the tower and got too fast before I started applying the brakes; because I wanted to minimize my time on the runway. Next time I would initiate the brake application at a much slower speed.

Original NASA ASRS Text

Title: FA10 flight crew reported a runway excursion after a failed high speed brake test.

Narrative: The brakes on our aircraft had been worked on and the repair station told us they had been repaired and asked us to do a high-speed taxi test of the brakes. When we asked for the taxi test on [the] runway; the Tower said that we should expect considerable delay and pointed out that there were several aircraft in the queue for the runway. A Controller came on asked us if we were ready for the taxi test immediately. We said; 'Yes'. As pilot flying; I advanced the power levers to full power and released the brakes which had tested normally during the taxi. We accelerated to about 90 knots and then immediately applied the brakes. Much to my surprise the aircraft pulled strongly to the right due to the fact that the left antiskid had disabled the brakes on the left side.I came close to hitting a runway edge light on the right side. I partially released the right brakes and used the tiller to steer back to the left. With that it became apparent that we were not going to stop before reaching the runway end. I used the tiller to straddle a light at the runway end. The airplane stopped on the chevrons of the emergency overrun. We made a 180-degree turn back to the runway with no damage to the airplane or to any lights. I had fully expected the brakes on both sides to work. I felt rushed by the Tower and got too fast before I started applying the brakes; because I wanted to minimize my time on the runway. Next time I would initiate the brake application at a much slower speed.

Data retrieved from NASA's ASRS site 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	1495055
Time
Date	201711
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Falcon 10/100
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 40 Flight Crew Total 14000 Flight Crew Type 2500
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Runway