As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRPLANE DOES NOT HOLD PRESSURE AT 350 PRES. DIFF VARIES BETWEEN 7.8 - 8.6. CABIN ALT VARIES 5400 - 8000 FEET RATE VARIES BETWEEN & AND - 500 FT. REMOVED AND REPLACED CABIN PRESSURE SELECTOR IAW AMM 23-31-01. OPS CHECK OK. C/W A/C PRESSURIZATION IAW AMM 05-51-24. NO DEFECTS NOTED. A/C REMAINS E180. A/C RETURNED TO SERVICE.