Lieber Dro, lieber Freelancer,

so steht es im BMS Dash 1 Manual:

1.2.5.11 AVIONICS POWER PANEL
As the name implies, the AVIONICS POWER panel is used to power up avionic systems. It is made of 6 locking toggle switches and an INS knob. [...]

The GPS switch enables power to the GPS receiver – which in BMS will always ensure a perfect INS alignment - and the DL switch enables power to the data link receiver.
The INS knob is used to set and manage the Inertial Navigation System.
It has 6 positions labelled OFF, ALIGN STOR HDG, ALIGN NORM, NAV, IN FLT ALIGN & ATT.

STOR HDG and ATT positions are not implemented in BMS.
OFF positions terminates all INS functions.

Place the knob to ALIGN NORM to start a normal alignment. The INS is usable after 90 seconds
(provided the GPS switch is ON) when the INS has heading information. From that point, the AUX
yellow flag on the ADI disappears and RDY is displayed steady in HUD and DED. Those are your
visual cue for performing a short ramp procedure.

Full alignment takes approximately 8 minutes. At that point, RDY flashes in the HUD and on the DED to indicate full alignment. Once the INS is ready, switch the INS knob to NAV to allow the INS system to provide navigation information to the navigation system.

Please note, navigation cues will only be displayed when the INS knob is set to NAV. During normal alignment, the navigation cues are not displayed (INS flight plan on HSD etc)

In case of INS failure or problem, an IN FLIGHT alignment can be performed. The INS is then
realigned according to GPS data provided by the GPS system. During in-flight alignment, straight,
level and un-accelerated attitude should be maintained until RDY flash in the HUD and DED.
(Normally the magnetic heading should be entered manually in the DED, but that is not required in
current BMS code)

Ich hoffe, dies trägt zur Aufklärung bei.

Herzliche Grüße

Caesar