Question

Radio altimeters are used up to _________

(a) 2,500 feet

(b) 3,000 feet

(c) 250 feet

(d) 300 feet

The question was posed to me during an interview for a job.

Question is from Fundamentals in section Aircraft Fundamentals of Aircraft Maintenance

Answer 1

Right option is (a) 2,500 feet

Easiest explanation: Radio altimeters provide data to the Flight computers, which is then displayed on the Flight displays, for the pilots. These altimeters only provide readings up to 2,500 feet, above which pressure systems are used to determine the flight altitude.