Final answer:
The two WOW proximity sensors on the nose gear are to provide ground or air status for the nosewheel steering, enabling it on the ground and disabling it during flight.
Step-by-step explanation:
The purpose of the two WOW (Weight-On-Wheels) proximity sensors on the nose gear is to provide ground or air status for the nosewheel steering. When the nose gear is on the ground, these sensors send a signal indicating that the aircraft is on the ground, which then enables the nosewheel steering system. This system is critical for pilots to maneuver the aircraft on the ground. Conversely, when the aircraft is in the air, the sensors ensure that the nosewheel steering is disabled to prevent any unintended inputs that could potentially damage the aircraft's systems. It's important for the safe operation of an aircraft to have clear indications of whether the gear is on the ground or in the air, hence the critical role of these sensors.