What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
privacy data omittedLeft ogd at approximately 0500 on a positioning flight. At FL23 the PIC received a caution message relating to cabin pressure. He noticed the cabin altitude was cresting 10,000 ft. at this point he decided to don his oxygen mask. He leveled the aircraft out at FL 25 at this point the cabin altitude was 14,000 ft. he initiated an emergency descent to approximately FL12 and returned to ogd.
The aircraft was taken to privacy data omittedfor repair. They determined an the cabin outflow valve was failed and the engine bleed valve was intermittently working. Both were replaced. A ground pressurization was performed post maintenance and the aircraft produced a higher than required leak down rate. The aircraft was returned to service.
Outflow valve p/n 103784-1 s/n 108-A0187
Bleed valve p/n 2943A000 s/n 1812
As the FAA filed it
^PRIVACY DATA OMITTED^LEFT OGD AT APPROXIMATELY 0500 ON A POSITIONING FLIGHT. AT FL23 THE PIC RECEIVED A CAUTION MESSAGE RELATING TO CABIN PRESSURE. HE NOTICED THE CABIN ALTITUDE WAS CRESTING 10,000 FT. AT THIS POINT HE DECIDED TO DON HIS OXYGEN MASK. HE LEVELED THE AIRCRAFT OUT AT FL 25 AT THIS POINT THE CABIN ALTITUDE WAS 14,000 FT. HE INITIATED AN EMERGENCY DESCENT TO APPROXIMATELY FL12 AND RETURNED TO OGD.
THE AIRCRAFT WAS TAKEN TO ^PRIVACY DATA OMITTED^FOR REPAIR. THEY DETERMINED AN THE CABIN OUTFLOW VALVE WAS FAILED AND THE ENGINE BLEED VALVE WAS INTERMITTENTLY WORKING. BOTH WERE REPLACED. A GROUND PRESSURIZATION WAS PERFORMED POST MAINTENANCE AND THE AIRCRAFT PRODUCED A HIGHER THAN REQUIRED LEAK DOWN RATE. THE AIRCRAFT WAS RETURNED TO SERVICE.
OUTFLOW VALVE P/N 103784-1 S/N 108-A0187
BLEED VALVE P/N 2943A000 S/N 1812