TLA stands for various terms. Discover the full forms, meanings, and possible interpretations of TLA across different fields and industries.
The airspace between the transition altitude and the transition level. Aircraft descending through the transition layer will use altimeters set to local station pressure, while departing aircraft climbing through the layer will be using standard altimeter (QNE) of 29.92 inches of Mercury, 1013.2 millibars, or 1013.2 hectopascals.
MilitaryLast updated: