Interpretation of High Altitude Instrument Approach Plates
T-45A UJPT & E2-C2 INav-07
4. Instrument approach minimums
a. Decision Height (DH) is the mean sea level (MSL) height in feet
above the highest elevation in the touchdown zone (first 3,000 ft
of the runway), specified for a glideslope approach, at which a
missed approach procedure must be initiated if the required
visual reference has not been established
b. Minimum Decision Altitude (MDA) is the lowest mean sea level
(MSL) altitude in feet to which descent shall be authorized in
procedures not using a glideslope, until the required reference
has been established
c.
Height Above Touchdown (HAT) is the AGL height of the DH or
MDA above the highest runway elevation in the touchdown
zone; HAT is published in conjunction with all straight-in
minimums
d. Height Above Airport (HAA) is the AGL height of the MDA
above the published airport elevation; HAA is published in
conjunction with circling minimums
5. Glideslope angle information for PAR approaches
COMMON ERROR: Not looking up meaning of asterisks/symbols
that pertain to modifications of minimums.
NOTE: Use rate-of-climb/descent table on inside back cover.
6. FAF to MAP chart - used on nonprecision approaches when DME
unavailable and radio facility not located at field
a. Gives distance from FAF to MAP in nm
b. Gives time to traverse distance at a given ground speed in
minutes and seconds
COMMON ERROR: Not reading cautions and warnings on
approach plate.
COMMON ERROR: Missing some details by not studying/
reviewing plate thoroughly.
III. Elements specific to types of high altitude approach plates
Fig 5: HI-TACAN
A. HI-TACAN and VOR/DME 2.9.4.2.1
RWY 27 Jacksonville
NAS
1. Bearing and distance information
2. DME used to determine
a. Limits of crossing altitude restrictions
(6-99) Original
Page 7-15
Previous Page
