The Fifth Guards Fighter Regiment was the highest scoring Soviet air regiment of the war with 739 victories claimed. It was lead by twice Hero of the Soviet Union, Major Vasilii Zaitsev (1911-1961) who was credited with 34 kills during the war (and 15 or 19 shared kills). The unit’s deputy command was ace Lt. Vatalii Popkov (1922-2010), also twice Hero of the Soviet Union who was credited with 41 kills during the war.
On 7 July the regiment’s records report the following kills:
Date   Pilot                         Plane              Time                          Notes
7 July  Lt. Shumilin              Me-109G         0710-0817
7 July  Jr. Lt. Belyakov         Me-109            0855-0945
7 July  Jr. Lt. Glinkin             Fw-190            0855-0945
7 July  Lt. Bayevskii              Me-109           1440-1610
7 July  Lt. Yaremenko           Ju-88              1730-1835
7 July  Jr. Lt. Glinkin             He-111            1730-1835
7 July  Captain Dmitriyev     Ju-52               1730-1835
7 July  Major Pindyur            Me-109            2000-2110
7 July  Lt. Stokolov               Me-109            2000-2110
7 July  Jr. Lt. Bugreyev         Me-109            2000-2110
7 July  Jr. Lt. Kalsin              Me-109            2000-2110
7 July  Jr. Lt. Sverlov            Me-109            2000-2100                  ***
It also reports the following losses:
Date   Pilot                         Plane              Time                          Notes
7 July  Lt. Shumilin                                       1730-1835                  *
7 July  Jr. Lt. Belyakov                                 1730-1835                  **
7 July  Jr. Lt. Sidorets                                  1730-1835                  Did not return
7 July  Jr. Lt. Sverlov                                    2000-2100                  ***
* Lt. Shumilin after an air battle made a forced landing on wheels in the area of Mikhailovka. The pilot was seriously wounded.
** Hit by fire from antiaircraft artillery and an Fw-190, pilot cross the front line and made a landing. Pilot was wounded in the legs. Plane was burned on the ground by German artillery and mortar fire.
*** but he himself was caught in fire by two Me-109s, as a result, the La-5 burned and the pilot died.
           So for 7 July, they claimed 8 Me-109s and four other planes at a loss of four planes, two pilots lost and two pilots wounded. On 7 July, the German VIII Air Corps lost 4 or 5 Me-109s (see Tables IV.27 and IV.28 of my Kursk book, page 1416). This was but one fighter regiment of the 26 fighter regiments in the Second and Seventeenth Air Armies on 7 July 1943.
From the serious discussion of Kursk (in German):
https://www.ifz-muenchen.de/heftarchiv/2009_3_2_t%C3%B6ppel.pdf
First day of Kursk:
German claims: 432 kills
“So heißt es im Kriegstagebuch des Wehrmachtführungsstabs, am ersten Tag des Unternehmens „Zitadelle“ habe der Gegner 432 Flugzeuge verloren”
Soviet total losses of three air armies: at least 257 lost planes
(This is alower limit, as losses some units are not counted and damaged planes which could not have been repaired are missing too)
6th July:
German claims: 205 kills
Soviet losses: 170 total losses (from only three air armies, lower limit)
5th – 15th July
1624 kills (fighters and Luftwaffe AA guns)
1961 (fighters and AA guns of Luftwaffe and Heer)
Soviet losses: 1182 (from only three air armies, lower limit)
Claims of the Soviet 8th Air Army 5th-8th July: > 400 kills
German losses very likely 10% of these claims.
I have got three blog posts on this subject going up this week that you will find interesting.
My issue as scientist with individual claims is that they are affect by an error, therefore, I would reduce in worst case 30% of the German claims (actually the number is lower), but I do not really know what to do in case of 10 fold overclaiming. 🙂
For you it may also be interesting that there is discussion of German claims of destroyed Soviet tanks by (German)planes in the liked paper.