Chinook HC.2 / HC.2A / HC.3 based on the CH-47D are listed here.
For the RAF Chinook history
see HC1
The
Chinook HC2 was a significant upgrade of earlier Royal Air Force (RAF) Chinook variants, featuring more powerful engines and improved avionics. The HC2A was largely similar, with the primary difference being a strengthened front fuselage, allowing for the potential future fitment of an aerial refueling probe. Both the HC2 and HC2A became the workhorse of the RAF's heavy-lift capabilities, participating in various operations worldwide.
The
Chinook HC3, distinct from the HC2/2A, was procured as a specialized variant for Special Forces operations. It featured enlarged sponsons for increased fuel capacity, night vision sensors, and enhanced navigation equipment, making it akin to the US Army's
MH-47E. However, due to significant contractual and certification issues, these aircraft were delivered in 2001 but did not enter full operational service until much later, after a costly "Fix to Field" program was eventually abandoned in favor of reverting some avionics to HC2/2A specification.
Under Project Julius, upgraded HC2/2A and HC3 aircraft were redesignated
HC4 and HC5 respectively.