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Arrange the altimeter settings by the datum each references, from lowest datum upward:

1. QFE, referenced to aerodrome level

2. QNH, referenced to mean sea level

3. QNE, referenced to the standard 1013.25 datum at a typical high pressure day

Select the correct sequence.

  • A.1, 2, 3
  • B.3, 2, 1
  • C.2, 1, 3
  • D.1, 3, 2

Answer: A

QFE reads zero on the aerodrome, QNH reads the aerodrome elevation, and the standard setting is used above the transition altitude for mutual consistency. The three answer different questions rather than being alternatives of equal merit.

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