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K-84 Commuter
General information
Type	Flying boat
National origin	United States
Manufacturer	Keystone–Loening
History
First flight	1929

The Keystone–Loening K-84 Commuter was a single-engine closed-cabin 4-place biplane amphibious flying boat built by Keystone–Loening. It was powered by a 300 hp Wright Whirlwind engine mounted between the wings with the propeller just ahead of the windscreen. It was first produced in 1929.

This airplane was featured as a model/bank by Texaco, #8 in a series "Wings of Texaco", of historic aircraft used by the company.

Surviving aircraft

• 305 "Kruzof" – K-84 on display at the Golden Wings Flying Museum in Minneapolis, Minnesota.
• 313 "The Old Patches" – K-84 on display at the Alaska Aviation Museum, in Anchorage, Alaska.

Specifications

Data from American airplanes: Keystone

General characteristics

• Crew: 1
• Capacity: 3 passengers / 1,223 lb (555 kg)
• Length: 32 ft 5 in (9.88 m)
• Wingspan: 36 ft (11 m) (some sources 40 ft (12 m))
• Powerplant: 1 × Wright J-6-7 7-cyl. air-cooled radial piston engine, 300 hp (220 kW) -330 hp (250 kW)

Performance

• Maximum speed: 115 mph (185 km/h, 100 kn)
• Cruise speed: 90 mph (140 km/h, 78 kn)
• Stall speed: 50 mph (80 km/h, 43 kn)
• Range: 510 mi (810 km, 440 nmi)
• Service ceiling: 12,000 ft (3,700 m)

References

1. "Keystone–Loening K-84 "Commuter"". Golden Wings Flying Museum. Golden Wings Flying Museum. Retrieved 3 June 2018.
2. "1929 N374V KEYSTONE/LOENING Model K-84 COMMUTER S/N 313". Alaska Aviation Museum. Archived from the original on 19 August 2013. Retrieved 3 June 2018.
3. Eckland, K.O. (2008-08-15). "American airplanes: Keystone". Aerofiles.com. Retrieved 2011-02-12.

Bibliography

• Elliot, Bryn (March–April 1997). "Bears in the Air: The US Air Police Perspective". Air Enthusiast. No. 68. pp. 46–51. ISSN 0143-5450.

External links

• Photo of Keystone-Loening K-84
• "With The Sky Police", January 1932, Popular Mechanics article about the New York City Police Air Force and the Keystone-Loening Commuter in service at that time, photos page 26, 29 and 30.
• Keystone-Loening "Commuter", K-84 – U.S. Civil Aircraft

• 1920s United States civil utility aircraft
• Flying boats
• Loening aircraft
• Keystone aircraft
• Amphibious aircraft
• Biplanes
• Single-engined tractor aircraft
• Aircraft first flown in 1929