As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. DURING TAKE OFF ROLL THE LEFT ENGINE EPR STAGNATED AT 1.64 - 1.68 LAGGING BEHIND THE RIGHT ENGINE. TAKE OFF ABORTED AT APPROXIMATELY 70 KNOTS. REMOVED AND REPLACED ENGINE PRESSURE RATIO INDICATOR (AALA20160525007) IAW AMM 77-10-00 AND ENGINE PRESSURE RATIO TRANSMITTER IAW AMM 77-11-02. OPERATIONAL CHECK GOOD.