This is the 12922nd most frequent Russian word.
летчик
Pilot.
Here, "летчик" specifically refers to a pilot who operates an aircraft.
Летчик управляет самолетом.
The pilot is flying the airplane.
In this sentence, "летчик" is used to denote an aspiration or career goal in the aviation industry.
В детстве он мечтал стать летчиком.
In childhood, he dreamed of becoming a pilot.
"Летчик" in this context refers to someone who piloted planes as part of military service.