FLIGHT TRAINING PUBLICATION (FLIP) STUDENT GUIDE
Figure 7-5 Mean Sea Level Decision Height
Touchdown Zone Elevation (TDZE) - The highest elevation in the first 3000 feet of the
landing surface of a particular runway.
Airport Elevation/Field Elevation - The highest point of an airport's usable runways measured
in feet from Mean Sea Level.
Height Above Touchdown (HAT) - This is an indication of your height above the ground
(AGL) when you reach MDA or DH for all straight-in approaches, however, it is not measured
from the ground below your aircraft. It is the height of the MDA or DH above the
TOUCHDOWN ZONE. The TDZE will always be shown in the Airport Sketch adjacent to the
approach end of the runway to which you are executing the straight-in approach procedure
Figure 7-6 Airport Elevation
Height Above Airport (HAA) - This is the height of the MDA of the published airport elevation
expressed in feet AGL. This is published only in conjunction with circling minima. Again, this
is not measure from the ground below your aircraft. The AIRPORT ELEVATION is shown in a
separate box in the Airport Sketch (Figure 7-6).
OPNAVINST 3710.7 sets absolute minima for single piloted
aircraft at 200 feet ceiling/HAT and 1/2 mile visibility/2400 feet
RVR, or published minima, whichever is higher. All Training
Command aircraft are considered to be single-piloted.