What was found
FLIGHT 5838 DURING CLIMB THE CABIN ALTITUDE INCREASED IN AUTO MODE FOLLOWED BY A RUMBLING NOISE, AIRCRAFT RETURNED TO THE FIELD. REPLACED THE RIGHT 10TH FUSELAGE DUCT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT 5838 DURING CLIMB THE CABIN ALTITUDE INCREASED IN AUTO MODE FOLLOWED BY A RUMBLING NOISE, AIRCRAFT RETURNED TO THE FIELD. REPLACED THE RIGHT 10TH FUSELAGE DUCT.