In March 1940, Povoroznikov served in the 68 OIAP, which was taking part in the Soviet-Finnish Winter War. The 68 OIAP was equipped with a mix of fighters and 1-3 Eskadrilya were equipped with I-16s and 4 Eskadrilya was equipped with I-153s.

On 5 March 1940, ylikersantti Martti Perälä (GL-278) claimed an I-153 between 13:25 and 14:20 over Äyräpää. This was an I-153 from 68 IAP, 13 VA.
According to 68 IAP’s war diary, pilots Povoroznikov and Semin, while escorting a group of SB bombers, saw a flight of four Bulldogs. Two Bulldogs escaped to the clouds, while the other two entered into a combat. At 15:40, Povoroznikov shot down one Bulldog in the region of Vuoksenranta. Semin got onto the tail of the other enemy aircraft and while making a tight turn at the altitude of 150-200m got into a spin and crashed with no apparent cause.

Povoroznikov ended the war with 1 biplane victory.

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1940
1	05/03/40	15:40	1	’Bulldog’ (a)	Destroyed	I-153		Vuoksenranta region	68 OIAP

Biplane victories: 1 destroyed.
TOTAL: 1 destroyed.
(a) Claimed in combat with Gladiators from LLv 14, which claimed one I-153 without suffer any losses. 68 IAP claimed one Gladiator while losing one aircraft.

Sources:
Ilmavoitot, osa 1 - Kalevi Keskinen and Kari Stenman, ISBN 952-99432-8-8
Ilmavoitot, osa 2 - Kalevi Keskinen and Kari Stenman, ISBN 952-99432-8-8
LeR 2 - Kalevi Keskinen and Kari Stenman, 2001, ISBN 951-98751-0-7
Suomen Ilmavoimat part II – 1928-40 – Kalevi Keskinen and Kari Stenman, 2006, ISBN 952-99743-0-2