Glossary
Navigation & Airspace
Transition Altitude (TA)
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Definition
The altitude at which aircraft change from local altimeter settings to standard pressure
Related Terms
Airport Elevation (ELEV)
The highest point of an airport's usable landing area measured above mean sea level
Flight Level (FL)
A standard altitude reference based on a fixed pressure setting of 29.92 inHg (1013.25 hPa)
QNH (QNH)
The atmospheric pressure adjusted to mean sea level, used for altimeter setting
Frequently Asked Questions
What is Transition Altitude (TA)?
The altitude at which aircraft change from local altimeter settings to standard pressure
What does TA stand for?
TA stands for Transition Altitude (TA). The altitude at which aircraft change from local altimeter settings to standard pressure
How does Transition Altitude (TA) relate to other aviation concepts?
Transition Altitude (TA) is closely related to Airport Elevation and Flight Level, among other key aviation concepts.
More in Navigation & Airspace
Airspace Classification
Airway (AWY)
Approach Procedure
Area Navigation (RNAV)
Decision Height (DH)
Distance Measuring Equipment (DME)
Flight Information Region (FIR)
Flight Level (FL)
Glideslope (GS)
GPS Navigation (GPS)
Instrument Landing System (ILS)
Minimum Safe Altitude (MSA)
Missed Approach
Non-Directional Beacon (NDB)
Required Navigation Performance (RNP)
Squawk Code
Standard Instrument Departure (SID)
Standard Terminal Arrival Route (STAR)
Transponder (XPDR)
VHF Omnidirectional Range (VOR)
Waypoint (WPT)