maxTRX Posted March 8, 2024 Posted March 8, 2024 Similar problem occurs when entering PA mode with A/P still on. The A/P will disengage but the trim will be messed up unless we cycle to UA then back to powered approach mode. I was already on speed before coupling to ACLS , level at 1200. The ACLS lowered my AOA to maintain 1200 ft. above the water at 151 kts. Great, then I accidentally bumped the trim and the ACLS immediately decoupled. The trim function was extremely sensitive afterwards so I reengaged ACLS and let the ATC maintain the AOA. Yesterday, someone started a thread on this subject but I don't see it today so...
maxTRX Posted March 8, 2024 Author Posted March 8, 2024 @rfxcaseyI was referring to your post in a different thread. For some reason I thought you started a separate thread...
maxTRX Posted March 13, 2024 Author Posted March 13, 2024 This twitchy trim in A/P threw me up and down couple of times as I was transitioning from T/C part of ACLS to P/R. I managed to engage T/C guidance from 80nm out. (ACL1 active, TCN and WPT nav unboxed, ILS boxed by engaging ACL) The only way I could trigger the 'CPL HDG' to intercept the marshal radial was by getting the clearance and calling 'established' . I also threw in 'commencing' just to be funny. It worked. The data started loading and was showing me a commanded a/s 250, descent rate 4000f/m, down to platform since I was commenced already. Well, I managed my altitudes, a/s and descend and arrived at 6000ft leveled off and by the time I passed my marshal point I was told to switch to approach and when I descended through platform I got another data update, cool. Since I disregarded the push time, I didn't have to uncouple the T/C steering for orbiting in marshal pattern and it stayed engaged continuously and flew along the marshal radial which in DCS is always colocated with FB. Everything looked good until the dreaded transition to approach mode. The procedure was to press CPL twice. First press cancels T/C, second engages P/R once available. Auto throttle also had to drop off before switching to PA mode. So... after gear down and flaps at 180kts, as soon as I touched the trim... it went wild. I managed to regain control and coupled the P/R. After this ATC was actually holding AOA quite good even before tipover, which was a surprise. So... it looks like some elements, bits and pieces are there. Someone needs to glue them together tho'
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