As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6601 - BWI-IAD - DURING TAKEOFF, MADE AN UNSCHEDULED LANDING DUE TO PASSSENGER DOOR WARNING LIGHT ILLUMINATED. ACFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND OPENED DMI 44130, MEL 52-3. MAINTENANCE CLOSED DMI 44130 ON 1-1-99 BY LUBING PASSENGER DOOR HANDLE MICROSWITCH. OPS CHECK OK. (M)