T-45C TS, ADV, & IUT RIFP-02
TACAN and VOR Procedures
IV. Indications of TACAN/VOR/VOR DME station passage
VOR: When the VOR breaks its "inbound" lock and
quickly relocks "outbound" as indicated by the VOR
bearing pointer and digital VOR bearing display
NOTE: The T-45C does not have a TO/FROM indicator.
TACAN/VOR DME: Due to large size of the cone of
confusion associated with TACAN stations, time of
station passage is noted when minimum DME is
reached. Use same procedure for VOR/DME station
NOTE: Limit your heading or corrections to within ten
degrees of inbound wind corrected heading when in
close to avoid overshooting.
Computing ground speed using TACAN/VOR DME
NOTE: You can check ground speed while maintaining a
course to or from a TACAN/VORTAC station by ensuring that
the DME from station is greater than or equal to aircraft
altitude in thousands of feet.
60 = GROUND SPEED
EXAMPLE: If the altitude is 30,000 ft (FL 300), DME should
be 30 nm or greater.
Start timing with a whole number in DME indicator
After predetermined time (in minutes), check and note
the exact DME