As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, AIRCRAFT WOULD NOT PRESSURIZE ABOVE 10,000 FEET CABIN ALTITUDE. AIRCRAFT RETURNED TO LPLA FOR AN UNEVENTFUL LANDING. MAINTENANCE FOUND DUCT CLAMP FROM THE RIGHT TURBO COMPRESSOR SYSTEM TO THE HEAT EXCHANGER LOOSE. MAINTENANCE SECURED THE LOOSE CLAMP AND PRESSURIZED THE AIRCRAFT ON THE GROUND PRIOR TO RETURNING THE AIRCRAFT TO SERVICE.