TA ONLY when operating VFR?
Small turboprop aircraft are soon to be mandated to carry TCAS in the UK.
Does anyone have any experience of operating VFR with TCAS, and suggestions whether to select TA ONLY or RA? The regulators don't seem to offer any relaxation from the requirement to select RA, but I wonder whether they have yet considered the VFR case, as larger aircraft (the only ones so far equipped with TCAS) don't very often go VFR.
I can imagine situations where an RA generated by traffic which has been visually acquired, could lead to a climb into IMC while below MSA, which might be unnecessary and unsafe, particularly when operating in mountainous or hilly terrain.
On the other hand, I understand that TCAS can be kept on RA while in the visual circuit, which implies that any RA while VFR will probably be pretty serious, anyway. But, when VFR in the open FIR, speeds are likely to be higher than in the circuit, leading to RAs on traffic that is further away, and may not actually be a threat if it is in sight.
Experience / suggestions / thoughts please?