23 August 1944: possibly Lt Heinz Sachsenberg of 6./JG 52 wounded. "On 23 August 1944, he was shot down in Bf 109 G-6 (W.Nr. 166 233) “Yellow 1” and badly injured over Romania by USAAF P-51 fighters." according to
http://www.luftwaffe.cz/sachsenberg.html. Problem: no USAAF raid that day over Rumania. In Barbas history of II./JG 52, the victors are Soviet fighters according to
http://www.jg52.net/kriegstagebuch/1944/7/.
The LUftwaffe losses summary database show only one aircraft lost in air battle by Luftwaffe fighter units then based in Rumania, and it is for II./JG 52, so should be Sachsenberg above.
25 August 1944: in book "La chasse de jour allemande en Roumanie" by Roba, the loss of Skreba is listed but without known cause either.
3 September 1944: the only MTO USAAF claim that day was claimed by 2nd Lt Don Beal Terry of 317th FS, 325th FG, but I have no other details. Terry died in an accident 11 days later (see
https://www.findagrave.com/memorial/...don-beal-terry for a picture)
Regarding US losses, 52nd FG lost that day 6 P-51s (3 KIA, 3 RTD) but they were over SE Yugoslavia. Outside 52nd FG there is no MACR that day for fighters of 15th Air Force, but two of my internet sources (one dead, the other
http://raf-112-squadron.org/31stfghonor_roll43_44.html) say that a pilot of 31st FG,
Sterling T Zimmerman, went MIA during a mission to Bucharest. That day 3 B-17s flew the final evacuation mission from US POWs in Romania, so Zimmerman might have escorted them. Zimmerman is not on the list of USAAF dead at http://www.usaafdata.com/search, so he survived, if he was ever lost this day.