What is the function of the Upper and Lower Radial Limits in the TH-73A?

• A. Define maximum altitude limits
• B. Indicate weight restrictions for flight
• C. Set operational boundaries for flight operations
• D. Control speed during descent

Answer: (C)

The Upper and Lower Radial Limits in the TH-73A serve to set operational boundaries for flight operations. These limits are crucial for flight safety and operational efficiency as they delineate the parameters within which the aircraft should be flown. By establishing these boundaries, pilots can maintain safe operational practices, ensuring that the aircraft remains within specified altitude and radial distance limits from navigational aids. This aids in preventing violations of airspace regulations and helps maintain safe separation from terrain and obstacles.

The other choices do not accurately reflect the function of the Upper and Lower Radial Limits. They do not define maximum altitude limits directly, nor do they pertain to weight restrictions for flight or control speed during descent. Instead, the focus is specifically on maintaining safe and effective flight operations within predetermined boundaries.