Lazar Chapchakhov claimed five of his victories while flying the Polikarpov I-153 in the 38 IAP.

On 16 February 1942, he claimed a Ju87.

He claimed another Ju87 on 1 April.

He was killed in action on 13 April 1942.

At the time of his death Chapchakhov had claimed 5 biplane victories and a total of 11. These victories were claimed during 268 sorties and 59 combats.

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
?			1	Enemy aircraft	Destroyed	I-153			38 IAP
?			1	Enemy aircraft	Destroyed	I-153			38 IAP
?			1	Enemy aircraft	Destroyed	I-153			38 IAP
?			1	Enemy aircraft	Destroyed	I-153			38 IAP
?			1	Enemy aircraft	Destroyed	I-153			38 IAP
	1942
?	16/02/42		1	Ju87	Destroyed				38 IAP
?	01/04/42		1	Ju87	Destroyed				38 IAP

Biplane victories: 5 destroyed.
TOTAL: 11 and 19 shared destroyed.

Sources:
Stalin's Eagles - Hans D. Seidl, 1998 Schiffer Publishing, ISBN 0-7643-0476-3
Additional information kindly provided by Ondrej Repka.