I am still pretty sure that the pensions of a spec aircrew Flt Lt, a single list Sqn Ldr and a Spec aircrew Sqn Ldr would be very similar. Something to do with the enhancement of the Flt Lt pension by the equivalent of mid rate flying pay. The other 2 would get no enhancement for their flying pay at all. BEags am I not right in thinking that the SA Sqn Ldr pay was made up the same way as general list. Of course my memory might be playing tricks.