Beechcraft Beechjet 400
The Beechjet 400 was first announced by Beechcraft in 1986, a year after the company purchased the design from Mitsubishi. The Mitsubishi design was known as the Diamond II executive jet but Beech launched it with several upgrades as the Beechjet 400 and again in 1989 with further modifications, the Beechjet 400A. The jet remained in production for through 2003 and over 400 aircraft were built in the intervening 17 years.
In the development of the Beechjet 400, Beech re-fitted the Diamond II with Pratt and Whitney JT15D5 turbofans and redesigned the interior along with a number of other minor refinements. The 400 is a fine jet but experienced a relatively low rate of production until the development of an upgraded variant, the 400A, which eventually became its successor. The original upgrades and those from the 400 to the 400A included improved avionics, more fuel storage, increased payload, more spacious cabin with rear lavatory, and improved cabin noise reduction. Of note, with respect to the avionics, the 400A was the first aircraft to receive certification of such an advanced cockpit suite. These modifications made the 400 and later the 400A a more efficient, spacious and comfortable aircraft without the need for changes to the overall aircraft dimensions.
In addition to the avionics, the 400A incorporated the latest advancements in aerospace industry materials and design. Construction is primarily of aerospace light alloys. Three fueling ports (one in the fuselage and one on each wing) combine to hold the increased fuel load, and a repositioned fuel tank allowed for more cabin space. The fuel consumption is designed to draw from the fuselage compartment first, thus providing relief to the bending effect on its wings. Additionally, the maximum landing weight was increased by incorporating anti-skid logic into the brakes. Relocating the engine mounts and adding sound-proofing materials reduced cabin noise levels resulting in a much more enjoyable, productive ride.
The 400A has undergone continued enhancements and redesign and has evolved into the Hawker 400, 400XP, and the latest offering from the company, Hawker 400XPR.
Despite the debut of these latest successors in the Beechjet lineage, the 400/400A still remains a strong presence in its class, and is an ideal choice for corporate or individual travel.
Technical specifications are as follows:
Two Pratt & WhitneyJT15D5 turbofans rated at 2965lb thrust.
Performance specifications are as follows:
- Model 400 has a maximum speed of 520 mph (837 km/h) with a crusing speed of 464 mph (748km/h). The range with four passengers, maximunm fuel and reserves is 2220 mi (3572km)
- Model 400A has a maximum speed of 538 mph (867 km/h) and a maximum cruising speed of 518 mph (834 km/h) with a long range, economical cruising speed of 451 mph (726km/h).
- The initial rate of climb is 3770 ft/min. The range with 4 passengers, maximum fuel and reserves cruising at 494 mph (796 km/h) is 1811 mi (2915 km).The range increases to 1948 mi (3135 km) when travelling at a cruising speed of 480 mph (774 km/h).
Dimensions are as follows:
For both the 400 and 400A, the length is 48ft 5in (14.75 m), and height is 13ft 11in (4.24m). Wing span is 43ft 6in (13.25 m) and wing area 241.4sq ft (22.4m2).
Weight specifications are as follows:
- The 400 when empty but fully equipped, the weight is 9135lb (4225kg). The maximum takeoff weight is 15,780lb (7158kg). The maximum useful load is 5,450lb with maximum payload being 2070 lb. Maximum payload is reduced to 550 lb with maximum fuel load of 4900 lb.
- The 400A when empty but fully equipped, the weight is 10,625lb (4819kg). The maximum takeoff weight is 16,100lb (7303kg). The maximum useful load is 5,714lb with maximum payload being 2415 lb. Maximum payload is reduced to 803 lb with maximum fuel load of 4912 lb.
Interior specifications are as follows:
The passenger cabin of the 400 is 4.9 ft high, 4.8 ft wide, and 14.3 ft long. The 400A cabin is more spacious being 15.6 ft long. The baggage compartment holds 53 cubic feet. Interior configuration is typically for crew of two pilots on the flight deck, with 6-7 passenger club seating arrangement in main cabin.
Interior accommodations on the Beechjet 400 and 400A include lavatory, club seating for six with an entertainment/executive console, or club seating for seven without the console. On many 400A configurations, fully berthable seats (i.e. convert to a bed for sleeping) that swivel up to 180 degrees and a refreshment cabinet have been added.
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