TM 1-1520-238-10
4-23
4.19.2 Collective Switches.
Collective stick mission
equipment switch position and functions are described in
table 4-6.
Table 4-6.
Collective Stick Switch Functions
Control/
Switch
Position
Function
RF OVRD
Immediately modes the missile system for an RF/IR missile.
NVS
This two position switch is not active unless the crewmember has selected the NVS
position on the sight select switch on the fire control panel.
PNVS
Pilot: Select the PNVS as the sensor to be used by the pilot. PNVS video with flight
symbology will be displayed on the pilot HMD.
CPG: If the PLT/GND ORIDE switch is OFF, the position is inactive. If the PLT/ GND
ORIDE switch is in ORIDE, this position allows takeover of control of the PNVS from
the pilot by placing the NVS select switch to PNVS and coupling it to the CPG helmet
LOS. PNVS video with flight symbology will be displayed on the CPG HMD.
TADS
Pilot: Permits the pilot to take control of the TADS from the CPG and automatically
place the TADS in WFOV FLIR with symbology. This would be done in the event of a
PNVS failure and is the PNVS backup mode.
CPG: Automatically modes the TADS for WFOV FLIR with flight symbology and
couples the TADS to the CPG helmet LOS. This mode is accomplished independent
of the PNVS and would be used by the CPG or IP to provide separate monitor for
obstacle or terrain avoidance.
PLRT/
BRSIT HMD
PLRT
Alternates the FLIR polarity; back and forth; black hot or white hot.
BRSIT HMD
Activates the IHADSS sight electronics unit to compute the boresight bias.
