What should be monitored closely during flight to maintain altitude in the TH-73A?

• A. The airspeed indicator
• B. The altimeter
• C. The fuel gauge
• D. The torque indicator

Answer: (B)

Maintaining altitude during flight is primarily reliant on accurate altitude measurement, making the altimeter the most crucial instrument to monitor closely. The altimeter provides real-time feedback about the aircraft's altitude above sea level based on atmospheric pressure. It is essential for pilots to regularly check the altimeter to ensure the aircraft is flying at the desired altitude, enabling safe navigation and compliance with airspace regulations.

While other instruments like the airspeed indicator, fuel gauge, and torque indicator serve important functions in flight operations, they do not directly influence altitude maintenance. The airspeed indicator assists in managing airspeed for performance optimization, the fuel gauge tracks fuel levels for endurance planning, and the torque indicator is important for engine performance metrics. However, none of these instruments provide direct altitude data, making the altimeter the key tool for monitoring altitude during flight in the TH-73A.