How many Air Data Computers (ADCs) are there on the aircraft?

The correct answer is that there are two Air Data Computers (ADCs) on the aircraft. Having two ADCs ensures redundancy and reliability in the systems that rely on air data information, such as altitude, airspeed, and vertical speed. The dual setup allows for cross-checking of data, enhancing safety by allowing the aircraft to continue to function accurately even if one of the computers fails. This design reflects a strong emphasis on safety and operational integrity in aviation systems.

While a single ADC could suffice for some purposes, having multiple units is a vital aspect of modern avionics design, accommodating various failure scenarios and ensuring that critical flight information is reliably available to the flight crew and systems.