AVIONICS FLIGHT CHECKS (CONT)
j. Fly a 90° right turn such that
the flight path is at a 90° angle
to the direction to the station.
The course deviation indica-
tor needle should deflect no-
ticeably to the left after one or
two miles of flight (assuming
the station is 25 to 50 miles
from the aircraft).
k. TACAN range test: Achieve
adequate usable reception at
45 miles at 1,250 feet above
station antenna altitude.
l. TACAN ground-track accura-
cy test: Fly aircraft over a pre-
determined ground check
point. The maximum error
shall be ±3%.
TACAN distance measuring K11-13,27-
Check against known distances (on the ground if pos-
sible) using known checkpoints). DME should indi-
cate known distances to within +0.5 miles or ±5% of
range. whichever is greater.
*16. Transponder set (AN/APX-100).
Check as follows:
a. Master control - STBY (allow
2 minute warm up).
b. Master control - NORM.
c. Mode switches - Set test
d. Code selectors - Set test code.