Date: 202103
Local time of day: 1201-1800
Location: ZZZ.Airport, US
Flight conditions: VMC
Light: Daylight
Aircraft: Regional Jet 200 ER/LR (CRJ200)
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Takeoff / Launch
Airspace: Class B ZZZ
Aircraft component: Engine Air Pneumatic Ducting
Component problem: Failed
Reporter organization: Air Carrier
Reporter function: First Officer; Pilot Not Flying
Reporter qualification: Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Second reporter function: Pilot Flying; Captain
Anomaly: Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Flight Crew
When detected: In-flight
Result: Flight Crew Became Reoriented; Flight Crew Took Evasive Action; Flight Crew Overcame Equipment Problem; Flight Crew Rejected Takeoff; Flight Crew Returned To Gate; General Evacuated; General Flight Cancelled / Delayed
Contributing factors: Aircraft
Primary problem: Aircraft

Narrative: Upon takeoff from Runway XX we received a Master Warning prior to V1 'R 14TH STAGE DUCT and the Captain initiated a rejected takeoff. We turned off the runway and allowed brakes to cool. The Captain completed the QRH for BRAKE TEMP OVHT. We contacted our Dispatcher; MOD; ZZZ Ops; the regional controller for company; and Maintenance Controller to discuss safest plan of action. The tires were inspected by fire department for any damage and abnormal heat signatures. We taxied back to gate after running checklist and communicating 2 in and 2 out. We returned to gate without issue. Unexpected failure of 14th stage duct very close to V1 causing a high speed rejected takeoff. I don't have any. It was an unexpected failure/warning message."


Second narrative: Was taking off of Runway XX initiated the takeoff procedure just prior to the one red Master Warning occurred decided to reject takeoff. Once rejected takeoff was initiated V1 was passed. Since rejected takeoff procedure had already been initiated decided to continue with the abort. Pulled off the side of the runway onto taxiway. Break temperature monitoring system was indicating hot had ops truck rolled for suspected tire damage. Fire trucks did a brake temperature analysis said everything was in normal tolerance. Waited for breaks to cool down taxi back to the gate and deplaned.Before push back we were having fuel calculation issues since extra fuel was added to the center tank. Got on the phone with our MOD in order to resolve the issue was provided guidance in order to ensure safe flight. We then followed those guidelines. Throughout entire procedure a Pax (Passenger) Door Unsafe Caution message kept popping up due to an MEL and a faulty sensor. It was briefed that if we received this message on the takeoff roll we would continue the flight. So upon receiving the red Master Warning having to overcome the startle and surprise was difficult. It took a while to process that this was not the Pax Door Unsafe Caution message.A quicker initiation of the abort procedure would have saved us from exceeding V1. Since it was so incredibly close to V1 when the event occurred it requires more attention and that critical phase in order to ensure that abort is commenced.


Synopsis: Flight Crew reported a high speed rejected take off and returned to the gate for maintenance.