414 TADS INTERACTIVE FD/LS CHECK
Inspect optics and clean as
If the AGPU is selected to provide power to the
aircraft, refer to paragraph 31. If the APU is
selected to provide power to the aircraft, refer to
1. Perform SYSTEMS POWERUP procedures in
accordance with paragraph 31.
2. Preset crew station switch/control settings as follows after
an aircraft power source is online.
When icing conditions exist, ensure that
TADS/PNVS gear teeth are free of ice, or
damage may result.
If the FD/LS functional check does not locate
the faulty component or continues to indicate
the same component after it has been replaced
and the problem still exists refer to the PNVS
malfunction symptom index (TM 1-5855-265-T).