Definition
QNE is the standard barometric pressure setting of 29.92 inches of mercury (1013.2 hPa) entered into the altimeter when operating at or above the transition altitude or in airspace where flight levels are used. With QNE set, every aircraft references the same pressure datum, so altimeter readings are expressed as flight levels rather than true height above sea level. In the United States, QNE is required at and above 18,000 feet MSL.
Plain English
QNE is the fixed pressure setting (29.92) every pilot dials into the altimeter once they climb high enough. Above that altitude, everyone uses the same setting so all aircraft are measuring height from the same starting point, even if the real outside pressure is different.
Context Anchor
Pilots encounter QNE when altimeters are set to the standard setting, especially when operating at altitudes where aircraft use a common pressure reference for separation.
Derivation
QNE comes from the international Q-code system, a set of three-letter shorthand signals developed for early radio communication. The Q-codes for altimeter settings (QNH, QFE, QNE) are still used worldwide. The letters themselves are not an acronym — they are simply the assigned code.
Why Pilots Care
All aircraft above the transition altitude use the same QNE setting, guaranteeing reliable vertical separation regardless of local weather.
Grounding Statement
When you set QNE, you are telling the altimeter to use the fixed standard pressure value instead of the pressure reported at a nearby airport.
Intuition Check
QNE is not the current local altimeter setting. It is the fixed standard setting: 29.92 inches of mercury, or 1013.2 hectopascals.
Example Sentence 1
Climbing through 18,000 feet, the pilot set QNE (29.92) and reported level at FL230.
Example Sentence 2
Controllers issued a QNE of 1013.2 before the flight entered the high-altitude airway.