Engine oil temperature shall be above how many degrees Celsius prior to advancing the FCS past the IDLE position?

Engine oil temperature shall be above how many degrees Celsius prior to advancing the FCS past the IDLE position?

• A. 0 degrees C
• B. -5 degrees C
• C. 5 degrees C
• D. 10 degrees C

Answer: (A)

Engine oil must be above 0 degrees Celsius before advancing the FCS past idle. The oil needs to be warm enough so its viscosity isn’t too high, ensuring the hydraulic system delivers proper pressure and responsive actuation as you move from idle to higher power. If the oil is at or below freezing, the lubrication and hydraulic response can be sluggish or inconsistent, increasing wear or risking abnormal control behavior during transients. The threshold of 0°C is the practical minimum to ensure reliable, smooth FCS operation. The other temperatures would either demand more warming time or are simply more restrictive than required.

Engine oil must be above 0 degrees Celsius before advancing the FCS past idle. The oil needs to be warm enough so its viscosity isn’t too high, ensuring the hydraulic system delivers proper pressure and responsive actuation as you move from idle to higher power. If the oil is at or below freezing, the lubrication and hydraulic response can be sluggish or inconsistent, increasing wear or risking abnormal control behavior during transients. The threshold of 0°C is the practical minimum to ensure reliable, smooth FCS operation. The other temperatures would either demand more warming time or are simply more restrictive than required.