Thanks Mark12, that confirms my thoughts.

I’d still like to know why it was fitted to PK683 and was it common to all Mk 24s or just those to which certain mods had been done?

Anyone? 🙂

My old Seafire 46, basically a Mk 22, had it.

If it was on the Mk 21 than it would be aileron related to the new twenty series wing. If not on the MK 21 but on the MK 22/24 it will almost certainly be related to feed back to the ‘stick’ from the Spiteful tail group.

Mark