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hardDME

An aircraft at FL300 directly over a DME station would read:

Approximately 5 NM. 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).

0 NM

No reading (DME unlocks)

Approximately 5 NM

30 NM

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