T-45A UJPT & E2-C2 INav-05
TACAN/VOR Navigation Procedures, TACAN/VOR Holding
NOTE: Add lead when you're tracking to the
station; subtract lead when you're tracking from
(5) Adjust AOB to maintain proper distance by
keeping No. 2 bearing pointer on wingtip position
NOTE: You may combine the AOB and chord
methods to maintain the arc and aircraft control.
The two methods are normally distinguished
according to DME limits; however, outside of 12
DME the AOB required to maintain an arc will
probably be too small to hold accurately.
COMMON ERROR: Not monitoring DME and
rolling out at the wrong time and on the wrong
3. Intercepting a radial from an arc
a. Set desired course in course selection window
b. Determine lead point - divide DME of arc into 60 and
multiply the product by 1 percent of groundspeed.
15 = 4 radials;
------------- X 1% GS = LPC
250 x 1% = 2.5 groundspeed;
4 x 2.5 = 10 radial lead
c. When lead point is reached, turn to intercept
NOTE: The CDI may not have started to move at
lead point because it is not active until you are within
10 degrees of the course.
d. Track inbound on radial