As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA/JAX - FLT 3053 - EN ROUTE TO JAX, THE WEIGHT-ON-WHEELS LIGHT ILLUMINATED, THE GEAR WARNING HORN SOUNDED, THE ROLL OUTBOARD GROUND AND GROUND SPOILER CAUTION LIGHT ILLUMINATED AND THE APU INLET DOOR WOULD NOT OPEN. REMOVED AND REPLACED LEFT OUTBOARD WEIGHT-ON-WHEELS CANNON PLUG AT LANDING GEAR JUNCTION TO NACELLE.