Hi Kevin,
On 22 December 1943 there were no USAAF claims, definitely none by Nos. 239, 244 or 324 Wings, and as far as I can tell, none by any other Allied units. No. 145 Squadron flew a mission to Korcula during the day because there was a report of an invasion, but they saw no enemy aircraft or ground activity. There was very bad weather in the Italy/Croatia area on this day.
Cheers,
Andrew A.
Air War Publications -
www.airwarpublications.com/earticles