As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1630 - MKE-CMH - SHORTLY AFTER TAKEOFF, THE CABIN DOOR ANNUNCIATE ILLUMINATED AND THE CREW MADE AN AIRTURN BACK TO MKE. AFTER AN UNEVENTFUL LANDING THE CREW CONSULTED WITH MX AND PUT THE ANNUNCIATOR ON MEL. MAINTENANCE CLEARED THE MEL 3/21/00 BY CLEANING AND ADJUSTING THE MICROSWITCHES IN THE CABIN DOOR. MAINTENANCE RETURNED THE A/C TO SERVICE. (M)