Brian,
Good Samaritans help to look for:
"Ctrl+F" - "668" or "Р-5"
http://militera.lib.ru/h/inozemtsev_ig4/05.html
https://unotices.com/book.php?id=88172&page=14
info 668 NBAP \ ShaP from VVS 14A
http://allaces.ru/sssr/struct/p/shap668.php
The award documents of the commander and komissar of the regiment (major Архипенко Тимофей Николаевич and major Петранин Иван Максимович):
for the period 26.01.1942 - __.10.1942 668 NBAP made a 702 combat mission at night (1321 hours 43 minutes), 520 training missions blindly,
dropped 180 tons of bombs, expended 7200 rounds, leaflets 2.5 million.
Lost 3 aircraft (5 man crew) - shot down over target. 1 aircraft - non-combat loss.
In August - September 1942 bombed airfields Luostari, Girvas, Mayatalo, Kirkenes, Hebukten (the regimental commander personally made combat mission on 19 August, 8,10,28 September)
I found,
Losses in September 1942:
16/17.09.1942 - ?? Ковакин Павел Константинович (pilot) + St.Lt Балабанов Владимир Васильевич (navigator AE) - MIA
27/28.09.1942 - Lt. Башкиров Сергей Дмитриевич (pilot) - KIA (by shrapnel AA in the head - Navigator Gubin N.D. landed the aircraft on airfield)
Other losses:
07.02.1942 - Tihonov V.A. - lost orientation, the plane is broken area 150-200 km ost Lowozero lake, the pilot is frozen.
17.02.1942 - Yachmenev V.T. - KIA ? - area Sennoe lake, found 19.02.1942
23.02.1942 - Yefimov S.S. +Andrianov I.F. - POW 24/02/1942 Kestingi, Finnland
Best regards,
Kirill