Heinkel He 51
Heinkel He 51a - prototype, He 49c conversion
Heinkel He 51 A-0 - pre-series, lowered back, modified exhausts; 10 pcs
Heinkel He 51 A-1 - series, 150 pcs
Heinkel He 51 A-2 - float conversion, 8 pcs
Heinkel He 51 B-0 - pre-series, reinforced construction, 12 pcs
Heinkel He 51 B-1 - series, detachable auxiliary tank, 350 pcs
Heinkel He 51 B-2 - float conversion, 38 pcs
Heinkel He 51 C-1 - ability to carry 4 bombs
Heinkel He 51 C-2 - on-board radio; 79 He 51 C in total
Heinkel He 52 - high altitude variant with increased wingspan, 1 piece
Heinkel He 51a - prototype, He 49c conversion
Heinkel He 51 A-0 - pre-series, lowered back, modified exhausts; 10 pcs
Heinkel He 51 A-1 - series, 150 pcs
Heinkel He 51 A-2 - float conversion, 8 pcs
Heinkel He 51 B-0 - pre-series, reinforced construction, 12 pcs
Heinkel He 51 B-1 - series, detachable auxiliary tank, 350 pcs
Heinkel He 51 B-2 - float conversion, 38 pcs
Heinkel He 51 C-1 - ability to carry 4 bombs
Heinkel He 51 C-2 - on-board radio; 79 He 51 C in total
Heinkel He 52 - high altitude variant with increased wingspan, 1 piece