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LMC mis compensation due to ranging computer massively fluctuating


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Posted

The LMC has become practically useless for multicrew ops, the ranging computer is constantly feeding incorrect data (at a disproportionate rate to what the aircraft is actually doing) therefore the lmc mis compensates for the motion of the aircraft, this can be temporarily corrected by ranging with the laser, but the ranging computer quickly decides it is at a completely different range soon after the laser stops, and the lmc begins to drift, some cases it results the TADS instantly slewing to full left/right, sometimes it results in a minor drift. Also if the laser is held and the LMC is pressed, it seems to have no effect, and cant be fixed by cycling the laser

apache bug.trk

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Posted (edited)

With the LMC on you must continue to feed it a valid range, laser is preferred, nav works great provided you’ve got an accurate point as your acquisition source, and auto range in a pinch. Bottom line is, you need to continuously feed the LMC a good continuously updated range in order for it to function correctly.

Edited by bradmick
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