T.O. BMS1F-16CM-1
BMS 4.34 Change 2.00
BMS 4.34 Dash 1
© Red Dog 2012-2019
Page: 32
1.2.2.1 ALT GEAR HANDLE
This handle is used to extend the landing gear when normal extension is not possible (in case of
hydraulic failure due to engine flameout for instance). Pulling the handle provides enough pneumatic
pressure to open the gear doors and extend the landing gear. Please note you can lower the gear
with the alternate handle only once as the pneumatic pressure cannot be recharged in flight.
The ALT GEAR RESET button (white button in the centre of the handle) allows retraction of the
landing gear after an alternate extension if hydraulic pressure is available.
BMS Key Callbacks for the ALG GEAR handle
AFAlternateGear
AFAlternateGearReset
1.2.2.2 TWA panel
The Threat Warning Aux panel is part of the EWS suite. It is made up of 4 indicators (3 with
pushbuttons): SEARCH, ACT/PWR, ALTITUDE & POWER.
The POWER button applies and removes power to the EWS suite. The green indicator
comes on when the EWS is powered.
The ACT/PWR button is a dual indicator and has no button. The top indicator labelled ACTIVITY
comes on if the EWS is powered and detects a radar painting the aircraft.
The bottom indicator labelled POWER is on whenever the EWS suite is powered.
The SEARCH button allows ‘S’ search radar symbols to be displayed on the RWR display if the EWS
is powered and detects a search radar; by default they are not. With SEARCH enabled a SAM radar in
search mode will display
as an ‘S’, well before you would expect to see its acquisition symbol if
SEARCH was not enabled, giving you an early warning in most cases.
With the SEARCH option not active the green ‘S’ indicator on the TWA will blink at 4 Hz whenever the
EWS detects a
search radar painting the aircraft. In that configuration ‘S’ symbols are not displayed on
the RWR.
T
he green ‘S’ indicator on the TWA will remain lit as long as the SEARCH option is active. A further
press of the button deactivates the SEARCH option.
ALTITUDE is both a pushbutton and a dual indicator.
The pushbutton toggles between HIGH & LOW altitude threat assessment biasing. The EWS is able to
categorize the SAM threat according to their lethality at low or high altitude.
The top indicator labelled LOW comes on if the EWS is powered when the LOW option is selected.
The bottom indicator labelled ALT comes on whenever the EWS suite is powered.
BMS Key Callbacks for the TWA panel:
SimRwrPower (toggle)
SimRwrPowerOn
SimRwrPowerOff
SimRWRSetGroundPriority
SimRWRSetSearch
1.2.2.3 HMCS panel
The Helmet Mounted Cueing System displays weapon, sensor and flight
information to the pilot through the helmet visor providing off-boresight
missile capability. It is an extension of the HUD and considered as one
SOI (HUD & HMCS).
The panel bears a single knob featuring and ON/OFF switch and a clockwise motion for increased
brightness. The knob can be interfaced with an analogue device as well.
Refer to the HMCS section for further discussion of the HMCS.
Summary of Contents for F-16C/D 4.34
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