Question

DME signals may be reviewed at distances up to __________NM at the line of sight altitude.

A) 25
B) 50
C) 100
D) 150

Answer 1

The DME signals can be received up to 199 NM at line of sight altitude, but among the given choices, 100 NM (C) is the typical operational range accepted for Distance Measuring Equipment signals.

Step-by-step explanation:

The Distance Measuring Equipment (DME) signals can be received at distances up to 199 nautical miles (NM) at the line of sight altitude. This typically means that the greater the altitude an aircraft is at, the further away the DME can be and still receive a reliable signal, as long as there is a clear line of sight without obstructions between the aircraft and the DME transmitter. Given the options presented in the question (A) 25, (B) 50, (C) 100, (D) 150, the answer would be (C) 100. It's important to note that while the range may extend beyond 100 NM, this response is based on conventional operational ranges for DME.