C650 flight crew reported an anti-skid system anomaly on takeoff roll; resulting in a high speed rej...

Attributes
ACN	1663063
Time
Date	201907
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Citation Excel (C560XL)
Operating Under FAR Part	Part 135
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Antiskid System
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Runway

Narrative:

We conducted the cockpit briefings; loaded the 5-passengers and their bags; taxied to the runway xx for departure. The tower gave aircraft X instructions line up and wait. The tower cleared the aircraft for takeoff. The first officer called 70 knots; then V1 (3-5 knots below V1); then abort; abort; abort; abort; abort. I immediately reduced the thrust to idle; applied braking and deployed the thrust reversers. As the abort continued down the runway; I (PIC (pilot in command)) had full left rudder pedal to the floor and asked the first officer (first officer) to push on his left rudder just confirm the pedal was depressed and his brakes worked. It appeared the right brake was engaged even though I was only pushing on the left brake pedal. The aircraft remained on the centerline until the last 500 ft.; then began to veer right. I was unable to keep the aircraft on the runway. The aircraft veered right into the grass on the runway edge and came to a full stop. The engines were immediately shutdown; and the first officer went to check on the passengers. I conducted the after landing & shutdown checklists to secure the aircraft and my first officer met with the fire and rescue and moved one of the passengers outside for an evaluation. No one injured during the abort.

Original NASA ASRS Text

Title: C650 flight crew reported an anti-skid system anomaly on takeoff roll; resulting in a high speed rejected takeoff and runway excursion.

Narrative: We conducted the cockpit briefings; loaded the 5-passengers and their bags; taxied to the Runway XX for departure. The Tower gave Aircraft X instructions line up and wait. The Tower cleared the aircraft for takeoff. The First Officer called 70 knots; then V1 (3-5 knots below V1); then abort; abort; abort; abort; abort. I immediately reduced the thrust to idle; applied braking and deployed the thrust reversers. As the abort continued down the runway; I (PIC (Pilot in Command)) had full left rudder pedal to the floor and asked the F/O (First Officer) to push on his left rudder just confirm the pedal was depressed and his brakes worked. It appeared the right brake was engaged even though I was only pushing on the left brake pedal. The aircraft remained on the centerline until the last 500 ft.; then began to veer right. I was unable to keep the aircraft on the runway. The aircraft veered right into the grass on the runway edge and came to a full stop. The engines were immediately shutdown; and the First Officer went to check on the passengers. I conducted the After Landing & Shutdown checklists to secure the aircraft and my First Officer met with the fire and rescue and moved one of the passengers outside for an evaluation. No one injured during the abort.

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.