Final answer:
For an automatic landing, aircraft flaps should be in the down position to provide the necessary lift at lower speeds and help slow down the aircraft.
Step-by-step explanation:
The question you've asked pertains to the configuration of aircraft flaps during an automatic landing. For an automatic landing, typically the flaps need to be in the down position, which provides the necessary lift at lower speeds and helps to slow the aircraft down.
Flaps set to 'up' would not provide the required lift and control, while 'flat' is not a standard flap setting for commercial aircraft. 'At' does not signify a flap position. So, the correct configuration for an automatic landing is flaps down.
In the context of aviation, automatic landing is a system that allows an aircraft to land without human intervention. One important factor in landing an aircraft is the use of flaps, which are movable surfaces on the wings that increase lift and drag.
When making an automatic landing, the flaps are usually set to the 'Full' or 'Down' position. This helps to increase lift and drag, allowing for a slower approach speed and smoother touchdown.