What was found
FLT 5506 - JAX-FLL, AT 13,000 FT, THE PASSENGER DOOR ANNUNCIATOR ILLUMINATED. PILOT NOTED THE DOOR SEAL HAD BEEN WHISTLING THROUGH 10,000 FT. CREW DECLARED AN EMERGENCY AND RETURNED TO JAX WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE DOOR SEAL. AIRCRAFT WAS RETURNED TO SERVICE. (M)