Hptm. Werner Thierfelder - Gruppenkommandeur II./ZG 26 ?

[Adriano Baumgartner]

Good night to all!
About his last combat mission, on 18th July 1944; is there any evidence of him or his machine being hit by return fire? Is there any recorded transcription of his Radio messages? Is there any kind of indication of him exceeding the limits of the Me 262 and having some kind of compressibility problems? We do know that there was NO evident Allied claim on a type looking like a Me 262...What was the probable cause of his death? ( Maybe an Oxygen problem? ) Was there any kind of post-accident investigation on the part of the Luftwaffe?
Any information related to his last mission would be very welcomed.
Yours
Adriano