As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - FLT 3537 - LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. ACFT RETURNED TO MIA WHERE IT LANDED WITHOUT INCIDENT. MTX - REMOVED AND REPLACED NR 1 AIR DATA COMPUTER. OPS CHECK GOOD AND ACFT WAS RETURNED TO SERVICE. PART TOTAL CYCLES 2,402. (X)