What was found
FLT 6520- DCA-LGA - AIR RETURN TO DCA - NR 1 ENGINE FIRE LIGHT ILLUMINATED ON TAKEOFF, REDUCED THROTTLE TO IDLE, LIGHT EXTINGUISHED MOMENTARILY. RANCID SMELL IN CABIN, NO SECONDARY ENGINE INDICATIONS. REPLACED 8TH STAGE DUCT. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT 6520- DCA-LGA - AIR RETURN TO DCA - NR 1 ENGINE FIRE LIGHT ILLUMINATED ON TAKEOFF, REDUCED THROTTLE TO IDLE, LIGHT EXTINGUISHED MOMENTARILY. RANCID SMELL IN CABIN, NO SECONDARY ENGINE INDICATIONS. REPLACED 8TH STAGE DUCT. (M)