What was found
DUE TO PACK AND PRESSURIZATION ISSUES A/C REQUIRES SMOD APPROVAL BEFORE FURTHER FLIGHT. REF. EAML 1564978MCI TYPE: SERVICEABLE / NEEDS ATTENTION (FLIGHT 5762 - FILED CLOSED) MAR 18, 2025 STATION: DEN--REMOVED AND REPLACED RH 10TH STAGE BLEED AIR SOV PER CRJ 200 AMM 36-11-04. STARTED ENG #2 AND PERFORMED OPS CHECK OF RH ENG BLEED VALVE PER CRJ 200 AMM 36-11-00. OPS CHECK GOOD AT THIS TIME. ENG #2 BLEED AIR VALVE OPENED AND CLOSED MULTIPLE TIMES AS COMMANDED AND SUPPLIED AIR TO PACK WITHOUT ISSUE. PERFORMED PRESSURIZATION OF THE AC USING ONLY THE #2 PACK PER CRJ 200 AMM 21-31-00. DURING OPS CHECK AIRCRAFT PRESSURIZED, HOWEVER PRESSURIZATION RATE REMAINED VERY UNSTABLE DURING PRESSURIZATION IN MANUAL MODE. REMOVED AND REPLACED #2 CABIN PRESSURE CONTROLLER PER CRJ 200 AMM 21-31-16. RE PERFORMED PRESSURIZATION OF THE AC USING ONLY THE #2 PACK PER CRJ 200 AMM 21-31-00. NO FLUCTUATIONS NOTED IN PRESSURIZATION RATE DURING PRESSURIZATION IN MANUAL MODE. OPS CHECK GOOD AT THIS TIME.