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The IAI Westwind is a business jet initially produced by Aero Commander as the 1121 Jet Commander.
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Powered by twin GE CJ610 turbojets, it first flew on January 27, 1963, and received its type certification on November 4, 1964, before the first delivery.
The program was bought by Israel Aircraft Industries (IAI) in 1968, which stretched it slightly into the 1123 Westwind, and then re-engined it with Garrett TFE731 turbofans into the 1124 Westwind.
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The MTOW aircraft can carry up to 8 or 10 passengers, and 442 were produced until 1987.
Development
thumb|Early 1121 Jet Commanders are powered by thin [[General Electric CJ610|CJ610 turbojets, and they have five starboard and three or four port windows.]]
thumb|Later 1123 Westwinds are stretched by , they have tip tanks, and six starboard and five port windows.
thumb|The 1124 Westwind is powered by two larger [[Garrett TFE731 turbofans, the Sea Scan maritime patrol aircraft of the Israeli Air Force has a nose radome and additional aerials.]]
thumb|The 1124A Westwind 2 has [[Wingtip device|winglets on the tip tanks.]]
Aero Commander
The Westwind was originally designed in the United States by Aero Commander as a development of its twin-propeller namesake aircraft, first flying on January 27, 1963, as the Aero Commander 1121 Jet Commander.
After successful testing, the aircraft was put into series production with deliveries to customers beginning in early 1965.
Seascan
In 1976, in the wake of the terrorist takeover of the Savoy hotel in Tel Aviv, the Israeli Air Force decided to use the Westwind as the basis for a maritime patrol aircraft, which became known as the IAI Sea Scan. It had originally been developed to meet a requirement for the United States Coast Guard to replace the Grumman HU-16 Albatross, but they selected the Dassault Falcon instead.
IAI produced Seascan nicknamed "Seagull" () since 1976, based on Aero Commander 1121 Jet Commander. The last one retired in 2017..
Design
The Jet Commander/Westwind was of broadly conventional business jet arrangement, with two engines mounted in nacelles carried on the rear fuselage, but the wings were mounted halfway up the fuselage instead of the typical low-wing arrangement of aircraft in this class.
At FL310 and , the 1124 burns per hour, and at .
Variants
{| class="wikitable"
|+ Type certificate data sheet
!
! Model !! Approved !! Engines !! Thrust !! Mmo !! Ceiling !! MTOW !! pax !! fuel !! Serials
|-
! rowspan=3 |
! 1121
| Nov 4, 1964
| CJ610-1/-5
|
| rowspan=5 | 0.765
|
|
| rowspan=3 | 8
|
| 3-120
|-
! 1121A
| Sep 19, 1967
| CJ610-1
|
| rowspan=3 |
| rowspan=2 |
| rowspan=2 |
| 121-131
|-
! 1121B
| Apr 23, 1968
| CJ610-5
|
| 132-150
|-
! rowspan=3 |
! 1123
| 8 Dec 1971
| CJ610-9
|
|
| rowspan=3 | 10
|
| 36 built
|-
! 1124
| 17 Mar 1976
| rowspan=2 | TFE-731-3-1G
| rowspan=2 |
| rowspan=2 |
| rowspan=2 |
| rowspan=2 |
|
|-
! 1124A
| Apr 17, 1980
| 0.785
|
|}
The 1122 Type Certificate was cancelled, the two airplanes manufactured have been converted to model 1123.