How do the pilots use the radar altimeter RA No. 1 during normal operation?

In the context of C-17 operations, during normal procedures, it is standard practice for the pilot to utilize radar altimeter RA No. 1 while the copilot uses RA No. 2. This division of responsibilities allows for redundancy, ensuring that if one radar altimeter experiences a malfunction, the other can continue providing altitude information without interruption.

Having the pilot and copilot use separate systems increases operational safety and situational awareness, as each can verify the other's readings. This redundancy in altimeter readings is critical during critical phases of flight, such as approaches and landings, where precise altitude data is vital for safe operations.

The other options suggest different operational approaches, but they do not reflect the standard practice for utilizing the radar altimeters in this configuration. Thus, the configuration where the pilot uses RA No. 1 and the copilot uses RA No. 2 is aligned with the designed operational procedures for maintaining safety and ensuring accurate altitude reporting.