As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROXIMATELY 10,000FT MSL LOST CABIN PRESSURIZATION, BEGAN DESCENT @ 11700 TO 10000FT NO INDICATIONS ON ECS PAGE OF ABNORMAL CONDITIONS, DOOR PAGE NORMAL. (FLT#5445) FO: 06/22/2017 CLOSED REMOVED AND REPLACED THE THROTTLE QUADRANT IAW AMM AND THE OUTFLOW VALVE PNEUMATIC LINES WERE DISCONNECTED AND RE-INSTALLED. AIRCRAFT PRESSURIZATION SYSTEM OPS CHECK GOOD IAW AMM. NO FURTHER DEFECTS NOTED.