Variants
- Heyford I
- Powered by 575 hp (429 kW) Rolls-Royce Kestrel III engines: 15 built, serial numbers K3489-K3902 (last aircraft built as Mk.II prototype).
- Heyford IA
- Engine support changes, power-driven generator, four-blade propellers: 23 built, serial numbers K4021-K4043.
- Heyford II
- Powered by 640 hp (480 kW) Kestrel IV engines: 16 built, serial numbers K4863-K4878.
- Heyford III
- Supercharged 695 hp (518 kW) Kestrel VI engines: 70 built in two batches, serial numbers K5180-K5199 and K6857-K6906.
For a total of 125 (including the prototype, J9130)
Read more about this topic: Handley Page Heyford
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