Beechcraft_Model_99 Knowpia

Model 99
	A Jamaica Air Shuttle Model 99
Role	Twin-engined utility monoplane
National origin	United States
Manufacturer	Beechcraft
First flight	July 1966
Introduction	1968
Status	Active
Produced	1966–1987
Developed from	Beechcraft King Air ; Beechcraft Queen Air

The Beechcraft Model 99 is a civilian aircraft produced by Beechcraft. It is also known as the Beech 99 Airliner and the Commuter 99. The 99 is a twin-engine, unpressurized, 15 to 17 passenger seat turboprop aircraft, derived from the earlier Beechcraft King Air and Queen Air. It uses the wings of the Queen Air, the engines and nacelles of the King Air, and sub-systems from both, with a specifically designed nose structure.

Design and development Edit

Designed in the 1960s as a replacement for the Beechcraft Model 18, it first flew in July 1966. It received type certification on May 2, 1968, and 62 aircraft were delivered by the end of the year.

In 1984, the Beechcraft 1900, a pressurized 19-passenger airplane, was introduced as the follow-on aircraft.

Production ended in early 1987. Nearly half the Beech 99s in airline service are now operated as freighters by Ameriflight.

Variants Edit

Ameriflight Beech C99 freighter takes off from the Mojave Airport

Beech 99s of Britt Airways operating under contract to Allegheny Commuter at Chicago O'Hare in 1975

99 Airliner: Twin-engined Commuter and cargo transport aircraft, 10,400 lb max takeoff weight, accommodation for a crew of two and up to 15 passengers. powered by two 550-hp (410-kW) Pratt & Whitney Canada PT6A-20 turboprop engines.
99 Executive: Executive transport version of the 99 Airliner.
99A Airliner: Same as the 99 Airliner, but powered by two Pratt & Whitney PT6A-27 engines flat-rated at 550 hp.
A99A Airliner: One of a kind, 99A Airliner without wing center section tanks; this aircraft has been scrapped.
B99 Airliner: Improved version, 10,900 lb max takeoff weight, powered by two 680-hp (507-kW) Pratt & Whitney PT6A-27/28 engines.
B99 Executive: Executive transport version of the B99 Airliner.
C99 Commuter: Improved version, 11,300 lb (5,100 kg) max takeoff weight, Pratt & Whitney PT6A-36 (engines flat rated at 715 hp)

Operators Edit

In July 2018, 106 Beechcraft B99 were in airline service, all in the Americas,:^[1]

55: Ameriflight
14: Alpine Air Express
10: Bemidji Airlines
10: Freight Runners Express
9: Wiggins Airways
3: Lake Clark Air Alaska
2: Flamingo Air, Hummingbird Air, InterCaribbean Airways
1: Bar XH Air, Courtesy Air, North-Wright Airways and Sky High Aviation Services
1 Heringer Táxi Aéreo Brazil

Specifications (Model 99A) Edit

Data from Green.^[2]

General characteristics

Crew: 1 or 2
Capacity: Normally 15 passengers (8-seat 'Business Executive' model available) / Up to 3,600 lb (1,633 kg) depending upon fuel requirements; some aircraft have a belly pod for additional baggage or cargo
Length: 44 ft 6.75 in (13.5827 m)
Wingspan: 45 ft 10.5 in (13.983 m)
Height: 14 ft 4.333 in (4.37726 m)
Wing area: 279.7 sq ft (25.98 m²)
Airfoil: root: NACA 23018; tip: NACA 23012^[3]
Empty weight: 5,533 lb (2,510 kg) (varies depending upon equipment and configuration)
Max takeoff weight: 10,400 lb (4,717 kg)
Powerplant: 2 × Pratt & Whitney Canada PT6A-20 (also -27 /-36) turboprop engines, 550 shp (410 kW) each
Propellers: 4-bladed Hartzell constant speed feathering and reversible propellers

Performance

Cruise speed: 205 kn (236 mph, 380 km/h) at 10,000 ft (3,048 m)
Range: 910 nmi (1,050 mi, 1,690 km)
Service ceiling: 26,200 ft (8,000 m)
Rate of climb: 1,700 ft/min (8.6 m/s)

Notable accidents and incidents Edit

In 1987, pilot Henry Dempsey survived an incident in which he was sucked out of the aircraft when he fell against a door in the hold which opened. He managed to hang on until the plane made an emergency landing and suffered only minor injuries.^[4]^[5]
Bar Harbor Airlines Flight 1808 was a scheduled flight from Logan International Airport to Bangor International Airport in the United States on 25 August 1985. On final approach to Auburn/Lewiston Municipal Airport, the Bar Harbor Airlines Beechcraft Model 99 crashed short of the runway, killing all six passengers and two crew on board. Among the passengers was Samantha Smith, a thirteen-year-old American schoolgirl who had become famous as a "Goodwill ambassador" to the Soviet Union and had been cast on the television show Lime Street.
Henson Airlines Flight 1517 crashed on September 23, 1985, when pilot errors led to a CFIT.

References Edit

^ "World Airline Census 2018". Flightglobal.com. Retrieved 2018-08-27.
^ Green, William, The Observers Book of Aircraft, Frederick Warne & Co. Ltd, 1970. ISBN 0-7232-0087-4
^ Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
^ "Pilot Hangs on as Plane Door Opens in Flight". Associated Press.
^ "PILOT FALLS OUT, CLINGS TO DOOR UNTIL LANDING". The Washington Post. Washington, D.C. 1987-09-04. ISSN 0190-8286. OCLC 1330888409.