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The Beechcraft Model 99 is a civilian aircraft produced by the 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

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

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)

Ameriflight Beech C99 freighter takes off from the Mojave Airport

Operators

In July 2018, 105 Beechcraft B99 were in airline service, all in the Americas:[1]

55: Ameriflight
12: Alpine Air
10: Bemidji Airlines
10: Freight Runners Express
9: Wiggins Airways
2: Flamingo Air, Hummingbird Air, InterCaribbean Airways
1: Bar XH Air, Courtesy Air, North Wright Airways and Sky High Aviation Services

Specifications (Model 99A)

General characteristics

Crew: One
Capacity: Normally 15 passengers (8-seat ‘Business Executive’ model available)
Length: 44 ft 6¾ in (13.58 m)
Wingspan: 45 ft 10½ in (13.98 m)
Height: 14 ft 4⅓ in (4.37 m)
Wing area: 279.7 ft² (25.99 m²)
Empty weight: 5,533 lb (varies depending upon equipment and configuration) (2,515 kg)
Loaded weight:
Max. takeoff weight: 10,400, 10,900, or 11,300 lb – see above (4,727 kg)
Powerplant: 2 × Pratt & Whitney PT6A-20, -27. or -36 turboprop Hartzell constant speed, feathering, and reversing, 550, 680, or 715 eshp depending upon model/mod status each

Performance

Cruise speed: 205 knots (380 km/h) at 10,000 ft (3,050 m)
Range: 910 nm (1,048 mi, 1,686 km) at 216 mph (347 km/h) at 8,000 ft (2,440 m)
Service ceiling: 26,200 ft (7,988 m)
Rate of climb: 1,700 ft/min (8.63 m/s)

First read at https://www.revolvy.com/page/Beechcraft-Model-99