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  Aircraft History, Specification and Information
Hawker-Beechcraft Hawker 400
2006 Hawker 400XP (Raytheon Hawker 400A) - N472LX
2006 Hawker 400XP (Raytheon Hawker 400A) - N472LX (sn RK-481)
Photo taken July 09, 2009
Seattle - Boeing Field / King County Intl, WA - USA (BFI / KBFI)
Photo © Marcel Siegenthaler

The Hawker 400 is a small twin-engine jet corporate aircraft. Initially designed and built by Mitsubishi, it has been further developed and updated by the Beech Aircraft Company, now part of Hawker Beechcraft.

N456TM 2008 Hawker 400XP
2008 Hawker 400XP
(Hawker Beechcraft Corp. Model 400A)
N456TM (sn RK-585)
Photo taken Nov. 01, 2010
St Lucie County International Airport - Fort Pierce, FL - USA (FPR / KFPR)
Photo © Marcel Siegenthaler

Design and development

The aircraft was originally designed as the Mitsubishi MU-300 Diamond, an all-new, all-jet development to complement and slot above the Mitsubishi MU-2 and provide Mitsubishi Heavy Industries with their top-of-the-line corporate aircraft model (hence the name "Diamond"). The aircraft first flew on 29 August 1978. It is a small, low-winged twin-turbofan aircraft of all metal construction, flown by a crew of two pilots and accommodating eight passengers in a pressurised cabin. Its wings use a computer designed, supercritical airfoil in order to minimise drag. Its two Pratt & Whitney Canada JT15D turbofans are mounted on the rear fuselage.

Beechcraft bought the production rights and began manufacturing it as their own model, initially re-designated as the Beechjet 400. The Beechjet 400 was certificated by the Federal Aviation Administration in May 1986.

Raytheon/Beechcraft steadily developed their own improvements to the model, leading to the 400A in 1990. Improvements in the 400A include longer range, higher take-off weights and improved luxury appointments. An all-glass flight deck was also offered. Beechcraft also developed a version for the United States Air Force known as the T-1A Jayhawk, used as a trainer for large aircraft crews (such as tankers and strategic transports). A total of 180 T-1A trainers were delivered between 1992 and 1997. Another military variant is the Japan Air Self-Defense Force 400T trainer which shares the same Type Certificate as the T-1A.

In 1993 Raytheon purchased the Hawker business jet product line from British Aerospace. The Beechjet 400 was eventually renamed the Hawker 400 to map it into the Hawker product line. The Hawker 400XP incorporates further aerodynamic, mechanical and interior improvements gleaned from the Hawker 800XP.

In October 2008, Hawker Beechcraft announced upgrades to the design, resulting in the new model designation Hawker 450XP. Upgrades were to include new, more fuel efficient engines (Pratt & Whitney PW535Ds with 2,965 pounds of thrust each). The Hawker 450XP was canceled in June 2009 due to poor economic conditions.

Nextant Aerospace developed a program to remanufacture the Beechjet 400A, replacing the Pratt & Whitney engines with Williams FJ44s, plus a new avionics suite and interior, among other improvements. The remanufactured aircraft, called the Nextant 400XT, received FAA certification in October 2011.


  • Mitsubishi MU-300 Diamond I
    Initial model. Two prototypes and 89 production aircraft built.
  • Mitsubishi MU-300-10 Diamond II
    Improved version of Diamond I; 11 built, all subsequently redesignated as Beechjet 400s.
  • Beechcraft Model 400 Beechjet - (Serial # RJ-1 thru RJ-65)
    Version of Diamond II built after Beechcraft bought the production rights to the MU-300 from Mitsubishi, 54 built in addition to 11 Diamond IIs.
  • Model 400A Beechjet - (Serial # RK-1 thru RK-353)
    Upgraded model, initially produced as the Beechcraft Beechjet 400A, then Raytheon Beechjet 400A. 353 Built.
  • Model 400A Hawker 400XP - (Serial # RK-354 thru RK-604)
    Produced as the Raytheon Hawker 400XP, then Hawker Beechcraft Hawker 400XP. 251 Built.
  • Model 400T
    Military version of the Model 400A, 180 built for the United States Air Force as the T-1 Jayhawk and 13 built for the Japan Air Self-Defense Force.
  • Hawker 400XPR
    A factory engineered and supported upgrade to this aircraft, with new avionics, interior, and Williams FJ44 engines.


The type is used by many corporate and private users, it is also used by air-taxi and air charter companies. NetJets Europe operates a fleet of 27 Hawker 400XPs.

Specifications (400XP & 400XPR)

(Data from HawkerBeechcraft.com website - June 2012)

  400XP 400XPR

Pratt & Whitney JT15D-5

Williams International FJ44-4A-32
Cruise Performance
High Speed Cruise
Speed 447 kt 447 kt
Fuel Flow 1,255 lb/hr 942 lb/hr
Altitude FL 390 FL 450
Long Range Cruise
Speed 414 kt 425 kt
Fuel Flow 938 lb/hr 761 lb/hr
Altitude FL 430 FL 450
Maximum Range Performance
Maximum Payload with Available Fuel
  2,015 lb payload 2,100 lb payload
Range 876 nm 1,170 nm
Average Speed 384 kt 406 kt
Trip Fuel 2,420 lb 2,508 lb
Maximum Fuel with Available Payload
  603 lb payload 688 lb payload
Range 1,565 nm 2,015 nm
Average Speed 396 kt 415 kt
Trip Fuel 3,898 lb 3,997 lb
4 passengers (800 lb payload)
Range 1,464 nm 1,950 nm
Average Speed 394 kt 415 kt
Trip Fuel 3,693 lb 3,861 lb
Ferry (zero payload)
Range 1,690 nm 2,160 nm
Average Speed 395 kt 413 kt
Trip Fuel 4,045 lb 4,124 lb
Mission Performance (4 passengers)
300 nm mission
Trip Fuel 1,099 lb 897 lb
Fuel Delta   202 lb (18% less)
600 nm mission
Trip Fuel 1,860 lb 1,515 lb
Fuel Delta   345 lb (19% less)
1000 nm mission
Trip Fuel 2,769 lb 2,285 lb
Fuel Delta   484 lb (17% less)
Last updated June 09, 2012
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Hawker 400".
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