this is specifically aiming for TVBS landing, so not fwd transition

we will need @Hwurzburg to have a look at how this is defined, and for what classes of aircraft

tilt rotor VTOLs landing conventionally as fixed wing....with switch active in pilot throttle controlled modes it will force tilts up at low throttle to clear props...at highest switch position it also sets pitch to flare pitch .....use it on all my tvbs for emergency fw landing when batts are low

@Hwurzburg the reason we ask is that we want to decide if the quadplane.in_transition() test needs to be replaced with a check for forward transition only.
Based on your description, I understand now that the !quadplane_in_transition check is meant to protect against the case where the pilot is currently commanding a forward transition while on low throttle. In this case we don't want to force the landing pitch.

@tridge, on second inspection, I see that there is an additional check here for !control_mode->is_vtol_mode(). When quadplane.is_back_transition()==true then tautologically is_vtol_mode()==true as well.
So adding a definition of and using is_back_transition() is superfluous.

I think we can simply replace in_transition() with in_frwd_transition() and spare us the definition of in_back_transition().

I just tested the feature. I loaded Convergence in RealFligth, and set long DO_AUX_FUNCTION 89 1. This is the flare switch.
Took off in QSTAB, then I transitioned to FBWA.
Every time I closed the throttle to zero, the front tilt servos would raise the motors vertically.

great!