As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FTL - 5822 - LGA-IAD - DIVERTED TO PHL DUE TO 14TH STAGE OVERHEAT MESSAGE ON EICAS. THE CAPTAIN RETARDED THE RIGHT POWER LEVER AND AFTER 3-5 MINUTES THE MESSAGE CLEARED AND FLICKERED ON AND OFF INTERMITTENTLY. AFTER LANDING IN PHL MAINTENANCE WAS CALLED. MAINTENANCE REMOVED AND REPLACED THE 14TH STAGE DUCT SENSING LOOP. OP CHECKS GOOD ON GROUND POWER TURN UP. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)