TM 55-1510-219-MTF
PROCEDURE TROUBLESHOOTING REFERENCE
F.
AVIONICS FLIGHT CHECKS (CONT)
45 miles at 1,250 feet above station antenna altitude.
l.
TACAN ground-track accuracy test: Fly aircraft over a
predetermined ground check point. The maximum error
shall be 3%.
*m.
TACAN distance measuring equipment - Check against
known distances (on the ground if possible) using known
checkpoints. TACAN should indicate known distances to
within 0.5 miles or 5% of range, whichever is greater.
*14. Transponder set - Check as follows:
K41
a.
Master control - STBY (allow 2 minute warm up).
b.
Master control - NORM.
c.
Mode switches - Set test mode.
d.
Code selectors - Set test code.
e.
Fly aircraft within line of sight of interrogating stations.
f.
Contact the facility by radio and request that the aircraft be
interrogated and that the reply be checked for satisfactory
response.
*15.
Encoding altimeter - Check as follows:
4-34
