When flying under IFR, what does MCA stand for?

The term MCA stands for Minimum Climb Altitude. This altitude is critical in IFR operations as it indicates the minimum altitude at which a pilot must establish and maintain a climb to ensure safe navigation in the airspace, particularly in the vicinity of obstacles or terrain.

MCA is often associated with standard instrument departures and arrival procedures where pilots need to adhere to specific altitude restrictions to safely maneuver an aircraft. This ensures that as the aircraft climbs to its assigned altitude, it remains clear of any obstacles in the flight path and complies with air traffic control requirements.

Understanding the concept of Minimum Climb Altitude helps pilots ensure safety during takeoff and ascent stages of flight, as it is essential for maintaining adequate vertical separation from terrain and obstructions.