Flight Crew Last 90 Days 50; Flight Crew Total 4000; Flight Crew Type 1000
Situational Awareness
Aircraft Equipment Problem Less Severe
Flight Crew Rejected Takeoff; General Maintenance Action
Aircraft
At 80 KTS Captain called '80 KTS.' On crosscheck; First Officer's side airspeed indicator read 0 with an AS flag. I replied negative; Captain called for reject; assumed control of aircraft. Reject was announced over radio. Aircraft was cleared off runway and returned to ramp for maintenance. Maximum observed ground speed was reported by jumpseater to be 110 KTS.
Aborted takeoff due to First Officer having no airspeed indication. [We] aborted at 110 KTS. Tower was notified and taxied back to gate. Maintenance found faulty Mach airspeed indicator on First Officer's side. Brake cooling chart was used. Instrument was removed and replaced; new instrument was tested and found to be airworthy. Logbook filled out and signed off; taxi out and takeoff was uneventful.
B757 flight crew experiences a failure of the First Officer's airspeed indicator during takeoff and the takeoff is rejected by the Captain. Mach airspeed indicator was found to be defective and was replaced by Maintenance.