As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT 14TH STAGE DUCT MSG AT CLIMB PWR RETARDED LEFT PWR LEVER LEVELED OFF AT 25,000. FOLLOWED QRH PROCEDURE LANDED AT DCA. DUCT MSG DISAPPEARED WITHIN FEW SECONDS OF PULLING LEFT PWR LEVER TO RETARD, IT DID NOT RE-ILLUMINATE FOR THE REMAINDER OF THE FLIGHT. PERFORMED OPERATIONAL CHECK OF 14TH STAGE BLEED AIR SYSTEM AND GROUND LEAK TEST OF 14TH STAGE BLEED SYSTEM IAW CRJ AMM 36-12-00 AND 36-21-00, ALL CHECKS GOOD.