[HGabor]

Yes, it can be a typo - both ways. It can be 8.22 or 9.22, I do not know. Or perhaps he just tested his later plane without official assignment and by September 22, 1944 Yak-3 No.1711 became his officially assigned plane, I do not know. Anyways, he flew more than just this Yak-3, I know about two of his planes (No.1711 and 1933 - received March 28, 1945), but probably he flew other planes during certain sorties due to maintenance, etc. What I know, Maj. Koldunov's 866 IAP had the following planes on the following dates:

December 1, 1944:
4 Yak-1b
10 Yak-9D,-9M, plus 2 non serviceable Yak-9D,-9M
10 Yak-9T, plus 1 non serviceable Yak-9T
7 Yak-3 along with two Yak-9T losses on December 11, 1944: S/N: 1215373 and 1315325 - Ml.Lt. Shamshik and Serdyuk MIA)

In 1945: 866 IAP switched for Yak-3 model entirely. Other remaining Yaks were re-assigned to other IAPs.

January 1, 1945: 18 Yak-3s (1 Yak-3 loss -St.Lt. Stephan G. Shamonov (OK) - to flak on January 27, 1945: S/N: 310173, engine: 422-331 at Iváncsa-W, Hungary)
February 1, 1945: 14 serviceable + 3 non serviceable Yak-3s
March 1, 1945: 29 serviceable + 3 non serviceable Yak-3s
April 1, 1945: 25 serviceable + 6 non serviceable Yak-3s

Sorry, I have no data on Koldunov's Yak-1, Yak-7 planes, as they were flown way too early to my research on the area of Hungary in 1944-45.
Hope this helps.

Gabor