Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe
Flight Crew Rejected Takeoff; General Maintenance Action
Aircraft
During takeoff we had good airspeed at 80 Kts and we both confirmed; but at approximately 100 Kts the First Officer called Airspeed Discrepancy with his airspeed being very erratic and it dropped to approximately 60 Kts while my airspeed was at 100 Kts and increasing normally. I called reject and we aborted the takeoff doing all the appropriate rejected takeoff procedures which included a manual spoiler deployment due to it being MEL. The First Officer advised the Tower that we were rejecting and once slowed to a safe taxi speed; we cleared the runway. After clearing; we ran the After Landing Checklist; the Rejected Takeoff QRH Checklist; and the Brake Overheat QRH checklists to a completion. The brakes number 1; 3; 4; and 5 were all rising to a high temp so we contacted Ground to find a safe spot to taxi to avoid people and equipment. We got cleared to taxi off of [the runway] to avoid possible hazards and contacted Maintenance to confirm our plan of attack and see if they had any other ideas to help us. They agreed with our plan to not set the parking brake and allow the brakes to cool to below 500 temp before going to a parking spot. We had another MD-11 qualified pilot on the jumpseat so we used his help to contact Operations and confirm our thoughts and procedures. The First Officer expertly ran all the checklists and helped tremendously throughout the whole situation. Kudos to both of these crewmember for a job well done. After the brakes which peaked at 571 degrees cooled below 500; we contacted Ground to taxi to our ramp coordinated parking spot. Upon reaching the parking spot; we completed our shut down Checklists and wrote up the appropriate Maintenance write-ups for the hot brakes and the airspeed problem. We also debriefed the maintenance team on all the write-ups and details.I don't believe you can prevent these types of maintenance problems from occurring. We just have to be ready for them and do the appropriate procedures safely.
[Report Narrative Contained No Additional Information.]
MD-11 flight crew reported rejecting their takeoff at about 110 kts when the First Officer airspeed indicator became unreliable.