Radio Navigationhard#1120
An aircraft at FL300 directly over a DME station would read:
A
0 NM
B
No reading (DME unlocks)
C
Approximately 5 NM
CorrectD
30 NM
Explanation
At FL300 (30,000 ft), directly overhead the DME would show slant range of approximately 5 NM (30,000 ft / 6,076 ft per NM).
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