ILS inop after start from cold and dark
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After having gone through the startup from "Cold & Dark" state, the ILS is inop.
There are no warning or caution lights lit - ie. all electrical busses seems online.
Setting the ILS freq and selecting ILS on the TACAN/ILS button does nothing - GS and NAV flags in the HSI are shown indicating that no ILS signal is received.Selecting "Ready to Start", and then go through the startup procedure from there, and the ILS will work just fine. Same for "Ready for Takeoff".
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Are you following the startup checklists...? Did you set the AHRS (Leg Panel) to SLV...?
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@retiredman93231 said in ILS inop after start from cold and dark:
Are you following the startup checklists...? Did you set the AHRS (Leg Panel) to SLV...?
Yep - but regardless, the ILS should not be affected by the ARHS.
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Here is an excellent new YouTube video that goes through the entire cold and dark startup process... It even includes some very impressive airshow manuevers at the end! https://youtu.be/TqDILAAc9aA
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@wothan said in ILS inop after start from cold and dark:
Yep - but regardless, the ILS should not be affected by the ARHS.
The HSI requires the AHRS to operate...
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This post is deleted!
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I have also found that on the ground, ILS will not come alive despite being tuned correctly and all the radios in the correct state. I suspect it' may be because I pre-tuned the freq before setting the radio states. Anyway, the fix for me is simple - change digit 1 by 1 notch and then set back to correct freq and it comes alive.
