Avia B-71 (SB-2M-100) Jerav 
Twenty-four Avia B-71 (licence-built Tupolev SB-2M-100) twin-engined bombers delivered from Czechoslovakia via Germany in September 1939, plus eight more in 1940. Total of thirty-two delivered. Jerav = Crane. Used by 5 Bomber Orliak (later 5th Bomber Polk) for the bomber role. Withdrawn from service in 1945.

Serial	c/no.	Prev. Identity	Delivered	Fate/Notes
1			1939
2			1939
3			1939
4			1939
5			1939
6			1939
7			1939
8			1939
9			1939
10			1939
11			1939
12			1939
13			1939
14			1939
15			1939
16			1939
17			1939
18			1939
19			1939
20			1939
21			1939
22			1939
23			1939
24			1939
25			1940
26			1940
27			1940
28			1940
29			1940
30			1940
31			1940
32			1940

References:

• Air Power of the Kingdom of Bulgaria Part III
• Wings of Fame Vol.13

Avia B.122 Osa 
Twenty-eight (29?) B.122 biplane fighter trainers obtained from Czechoslovakia via Germany in 1939. Osa = Wasp. Used by the Fighter School at Karlovo for the aerobatic training role. Withdrawn from service in 1940. Most aircraft fitted with a Walter Kastor II radial engine, but at least one fitted with a Avia RK-17 engine. The latter were used as glider tugs. Military type number 7013.

Serial	c/no.	Prev. Identity	Delivered	Fate/Notes
1			1939
2			1939
3			1939
4			1939
5			1939
6			1939
7			1939
8			1939
9			1939
10			1939
11			1939
12			1939
13			1939
14			1939
15			1939
16			1939
17			1939
18			1939
19			1939
20			1939
21			1939
22			1939
23			1939
24			1939
25			1939
26			1939
27			1939
28			1939
LZ-TAD			?

References:

• Air Power of the Kingdom of Bulgaria Part III
• Wings of Fame Vol.13

Avia B-135 Lyastovica 
Twelve B-135 (AV-135 in Bulgarian literature) delivered in crates by rail Feb 1943. Assembled from Czech-made parts by DSF at Lovech in the summer of 1943. Last example test flown 28 August 1943, following which all the aircraft were officially accepted by the VNVV. Planned licenced production of 50 a/c as the DAR-11 Lyastuvka (Swallow) later cancelled due to the lack of Czech-built engines. Used by the Fighter School at Dolna Metropolija for the fighter-training and fighter-interceptor roles. Withdrawn from service by end of 1944 and stored in the open at Dolna Metropolija. Last few airframes used for air-ground gunnery target practice in 1946. Military type number 7057.

Serial	c/no.	Prev. Identity	Delivered	Fate/Notes
1	B-135.101	D-IWKM	28 Aug 1943
2	B-135.102		1943
3	B-135.103		1943
4	B-135.104		1943
5	B-135.105		1943
6	B-135.106		1943
7	B-135.107		1943
8	B-135.108		1943
9	B-135.109		1943
10	B-135.110		1943
11	B-135.111		1943
12	B-135.112		1943

References:

• Air Enthusiast No.94 July/August 2001 pp29-30
• Avia B-35, B-135 (MBI)
• Wings of Fame Vol.13

Avia B.534 Dogan 
Seventy-eight B.534 biplane fighters ordered from Czechoslovakia via Germany in summer 1939. Last batch of 18 aircraft delivered in January 1940. Used by 2 Fighter Orliak (later 6th Fighter Polk) for the fighter role. Early 1944 survivors transferred to 2/2 Orliak for use in the ground strafing role Sept-Dec 1944. Withdrawn in 1945. Dogan = Kestrel. Military type number 7037. Note: At least one aircraft had a cut-down rear fuselage so the canopy projected above the fuselage line (Bulg AF serial 61/7037 ?) - photo Bulgarian Fighters Part I.

Serial	c/no.	Prev. Identity	Delivered	Fate/Notes
1			1939
2			1939
3			1939
4			1939
5			1939
6			1939
7			1939
8			1939
9			1939
10			1939
11			1939
12			1939
13			1939
14			1939
15			1939
16			1939
17			1939
18			1939
19			1939
20			1939
21			1939
22			1939
23			1939
24			1939
25			1939
26			1939
27			1939
28			1939
29			1939
30			1939
31			1939
32			1939
33			1939
34			1939
35			1939
36			1939
37			1939
38			1939
39			1939
40			1939
41			1939
42			1939
43			1939
44			1939
45			1939
46			1939
47			1939
48			1939
49			1939
50			1939
51			1939
52			1939
53			1939
54			1939
55			1939
56			1939
57			1939
58			1939
59			1939
60			1939
61			Jan 1940
62			Jan 1940
63			Jan 1940
64			Jan 1940
65			Jan 1940
66			Jan 1940
67			Jan 1940
68			Jan 1940
69			Jan 1940
70			Jan 1940
71			Jan 1940
72			Jan 1940
73			Jan 1940
74			Jan 1940
75			Jan 1940
76			Jan 1940
77			Jan 1940
78			Jan 1940

References:

• Air Power of the Kingdom of Bulgaria Part III
• Bulgarian use of the Avia B.534
• Bulgarian Plane Avia B.534
• Wings of Fame Vol.13