Boeing 414 - H-47D Chinook

In 1976 three US Army Chinooks (one for each existent version, A,B and C) were chosen to be converted to the new CH-47D variant which have upgraded engines and a new triple-hook cargo system. The programme started in 1979 and a total of 472 airframes were converted. There were also a few new-built Ds with the last of them delivered in 2002

In 1999, Boeing presented the CH-47SD (or Super-D) for the international market featuring extended range and a glass cockpit.

In 2001, Boeing unveiled the CH-47F a new upgrade that includes at least 300 conversions of the remaining Ds

In 2004, the MH-47G special forces variant was first delivered.

Since 2013, former US Army Chinooks are used by civilian operators

Derivatives & Versions

YCH-47D	1977	CH-47D Chinook prototypes.
CH-47D Chinook	1979	Military production version of the Boeing 414.
MH-47D Chinook	1984	Introduced in mid-eighties, twelve D aircraft ( 6 ex CH-47A and 6 ex CH-47B ) were converted for use by the US Army 160th Special Operations Aviation Regiment.
MH-47E Chinook	1988	Special Operations Aircraft (SOA).
CH-47SD Chinook	1999	The Super D, aimed primarily at the international market incorporating a fully integrated glass cockpit with automated flight controls and full authority digital engine control (FADEC).
→ CH-47F Chinook	2001	Aimed as a low cost re-manufacture of the CH-47D and to extend the model life to 2060, the CH-47F first flew in 2001 and the first production machine came off the Boeing Pennsylvania line in July 2004.
Chinook HC.4	2010	Upgrade version for RAF Chinook HC.
Commercial CH-47	2013	The first civilian variants are listed under Boeing-Vertol 234.
Chinook HC.6A	2017	Chinook HC.

Operators

1982-2019	US Army Aviation
1989-	Elliniki Aeroporia Stratou
1993-	Royal Air Force
1995-	Republic of Singapore Air Force