Oil pressure limits for TOGA and APR are the same.

• A. 45-95 PSI
• B. 0-5 PSI
• C. 60-100 PSI
• D. 10-20 PSI

Answer: (A)

Oil pressure is a measure of engine lubrication, and the CRJ-550’s oil system maintains the same safe operating window regardless of thrust mode. Whether you’re in TOGA or APR, the engine needs consistent lubrication for bearings, gears, and actuators, especially during high-demand takeoff and go-around events. The system is designed to keep oil pressure within roughly 45 to 95 psi during normal operation, using the oil pump and relief valve to hold it in range. If pressure falls outside this window, lubrication or hydraulic operation can be compromised, or a fault may be indicated. Since the required lubrication doesn’t change with the throttle mode, the same limits apply to both TOGA and APR, making this range the correct one.