As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN DUCT OVERHEAT CAS MESSAGE ILLUMINATED IN FLIGHT. LANDING AND TAXI WERE UNEVENTFUL. FOUND PLENUM ASSEMBLY CHECK VALVE STUCK OPEN. REPLACED PLENUM ASSEMBLY CHECKVALVE. ALSO FOUND ACFT FLEXDUCT TORN AND UNSERVICEABLE. REPLACED FLEXDUCT. OPS CHECK GOOD.