As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF AT 90KTS. NR 1 ENGINE OIL PRESSURE DROPPED SLOWLY OUT OF THE GREEN ARC TO MID YELLOW. T/O ABORTED. OIL PRESSURE STABILIZED AT THE BOTTOM OF THE YELLOW ARC. 35PSI AT IDLE. REPLACED NR 1 ENGINE OIL PRESSURE TRANSMITTER IAW MM. OPS AND LEAK CHECK NORMAL.