Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 220; Flight Crew Total 25000; Flight Crew Type 2883
Aircraft Equipment Problem Less Severe
Flight Crew Rejected Takeoff; Flight Crew Returned To Gate
Aircraft
On takeoff after TOGA engagement the Number 1 engine accelerated to about 85% N1 which was about 10% less than the 94.1% achieved by the Number 2 engine and called for by the reduced thrust takeoff data message. The throttles were miss matched with the Number 1 engine throttle more than 1 knob width behind engine Number 2. As I advanced the Number 1 throttle to try and match thrust with the Number 2 engine I noticed the Number 1 N1 decreased while the Number 1 EGT (Exhaust Gas Temperature) increased which is the opposite of what should have happened. At that moment I made the decision to perform a low speed rejected T/O at approximately 70-75 knots. The runway was cleared about half way down using very little braking and the quick reference checklist; QRH and brake cooling tables were then consulted. I called and alerted [Maintenance] as to the situation and we returned to the gate. An ELB (electronic logbook) maintenance fault report was sent at that time.
[Report narrative contained no additional information.]
A B737 flight crew reported that one engine did not make takeoff thrust resulting in a rejected takeoff.