Hi, I'll try just one more time.:-) I want to activate the LOC so the aircraft locks on to the localiser only. I see the key eventsAP_LOC_HOLDAP_LOC_HOLD_OFFAP_LOC_HOLD_ONbut these appear to activate the G/S as well. In the default 747, MS use AP_BC_HOLD, but the aircraft turns through 180

Hi Nick,Approach and Localizer are pretty confusing. K:AP_LOC_HOLD_ON will trigger (A:AUTOPILOT APPROACH HOLD, bool) and K:AP_APR_HOLD_ON will trigger both (A:AUTOPILOT APPROACH HOLD, bool) and (A:AUTOPILOT GLIDESLOPE HOLD, bool)Check the last post by Arne Bartels in this thread for some elaboration on this subject.http://forums.avsim.net/dcboard.php?az=sho...ing_type=searchBrgdsEugen

Thanks Eugen, I've picked the bones from all the info and got it all working now. Many thanks,nick