Boeing Model 80

Boeing Model 80
Boeing Model 80
Type:	Three-engine airliner
Design country:	United States
Manufacturer:	Boeing
First flight:	July 27, 1928

Cabin of a Boeing Model 80, 1929

Boeing Model 80A-1 at the Museum of Flight in Seattle

The Boeing Model 80 was a double-decker designed three-engine airliner from the 1920s. It was developed as a further development of the Model 40 and was the first type of aircraft developed by Boeing for passenger traffic.

history

Boeing developed the Model 80 for its subsidiary Boeing Air Transport Corporation . Particular emphasis was placed on a high level of passenger comfort. The Model 80 made its maiden flight on July 27, 1928.

As in the previous Model 40, the fuselage consisted of a tubular steel frame covered with fabric. The ends of the wooden wings could be removed to accommodate the aircraft in small hangars . Initially, three Wasp motors from Pratt & Whitney served as the drive . In the later versions they were replaced by Hornet engines. The two outer engines were between the wings of the biplane.

Contrary to the wishes of the pilots, the two-man cockpit was closed. In the separate cabin there was space for twelve passengers. The equipment included leather seats, reading lamps, fresh air supply and running cold and warm water.

In the stretched version 80A, the capacity increased to 18 passengers. It made its maiden flight on September 12, 1929. United Airlines , the successor to Boeing Air Transport, put ten of these aircraft into service.

The 80A was the first aircraft to use female flight attendants. On May 15, 1930, Ellen Church became the first female flight attendant to fly in an 80A from Oakland, San Francisco to Chicago.

Versions

• Model 80 - original version with Wasp engines (4 planes)
• Model 80A - stretched version with improved aerodynamics and Hornet engines (10 aircraft, later converted to the 80A-1)
  • Model 80A-1 - conversion version of the 80A with modified tail unit
• Model 80B-1 - single 80A with open cockpit; later converted to the 80A-1
• Model 226 - Conversion of an 80A to a Standard Oil Company business aircraft with a modified tail unit

Technical data (Model 80A)

Three-sided view

Parameter	Data
crew	2 pilots, 1 flight attendant
Passengers	18th
length	17.20 m
span	24.40 m
Takeoff mass	7930 kg
Cruising speed	201 km / h
Top speed	222 km / h
Service ceiling	4270 m
Range	740 km
Engines	3 × Pratt & Whitney Hornet - radial engines with 386 kW (525 hp) each

Received aircraft

The only surviving Boeing 80A-1 is on display in the Museum of Flight at Boeing Field in Seattle .

See also

• List of aircraft types

Web links

Commons : Boeing 80  - collection of images, videos and audio files

• Manufacturer information from Boeing (English)

Individual evidence

1. ↑ ^{a b} Boeing 80A-1. In: museumofflight.org. Museum of Flight, accessed May 23, 2019 . 
2. ↑ Shane Nolan: United Airlines Celebrates 80 Years Of The Flight Attendant Profession. In: Aviation Online Magazine. Retrieved January 18, 2020 .