I have one civilian log book which comprises carried forward Military Single piston - RAF & RN, Rotary wing RN - both single & twin turbine plus current civilian single piston. All hours are logged in the apropriate single & multi engine columns. I do however maintain a back up summary Excel file and of course my original Military Log Books - RAF & RN !!!!
In this way I can keep a true running total since "effects of control 1" - some 33 years ago
