As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL AT 80 KTS HAD "ALT" MISCOMPARE ALERT AND REJECTED TAKEOFF. COMPLIED WITH QRH. ALERT CLEARED AT 60 KTS. ATTEMPTED SECOND TAKE OFF WITH SAME RESULTS AND A MOMENTARY LEVEL 1 WINDSHEAR DETECT FAIL MESSAGE. COMPLIED WITH QRH AND TAXIED BACK TO RAMP. R&R FCC 2 IAW AMM 22-01-03-4. OPS NORMAL.