Out of interest dr
does the casualty rate for P-47s break down into losses prior to hydromatic propeller blades and methanol-water injection, and after?
No Colin - and there is a certain subjective weighting to my statistics.
If an a/c went MIA and there were fighters present (and no surviving pilot) I assigned a value of MIA-Probably Air... and added those to MIA-Air to try for conservative losses in air to air combat.
If an a/c went MIA during strafing, or hit trees while strafing or bellied in when strafing - I assigned all of those to MIA-Strafing.
If a pilot bailed out or crash landed in Channel or England due to battle damage I assigned that to the appropriate enemy action (flak/fighters)
Mechanical Losses - unless accompanied by a MACR/POW returnee questionnaire are very difficult.. "engine lost power" could have a variety of causes that the pilot may not be able to pin down by the time he had to get out.
For my own research I have sub categories in Mechanical of Engine Failure (which could be due to coolant loss, mags, too long in water injection/max boost), System Failure (oxygen loss, Runaway throttle, fuel tank feed issue, landing gear failure, etc).
I separated Fuel and Accidents and Weather as separate categories from the rest as they result from pilot skill more than enemy action and mechanical causes beyond their control.