As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6588 - IAD-PIT - AIRCRAFT RETURNED TO GATE DUE TO LEFT AUTO RE-IGNITION WOULD NOT TEST. MAINTENANCE INSPECTED AND OPENED DMI 41172, MEL 74-5. MAINTENANCE CLOSED DMI 41172 ON 01-01-98 BY REMOVING AND REPLACING PRESSURE SWITCH, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (M)