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The Boeing 720 is an American narrow-body airliner produced by Boeing Commercial Airplanes. Announced in July 1957 as a 707 derivative for shorter flights from shorter runways, the 720 first flew on November 23, 1959.
1970. April 22: A Trans World Airlines 707-131 (N743TW) was destroyed by fire at Indianapolis, Indiana, United States. [1]September 6: Trans World Airlines Flight 741, was hijacked by terrorists from the Popular Front for the Liberation of Palestine along with four others as a part of the Dawson's Field hijackings.
The 707 was based on the 367-80 "Dash 80" N708PA, the first Boeing 707 built. (1957) During and after World War II, Boeing was known for its military aircraft. The company had produced innovative and important bombers, from the B-17 Flying Fortress and B-29 Superfortress to the jet-powered B-47 Stratojet and B-52 Stratofortress, but its commercial aircraft were not as successful as those from ...
N833NA, the Boeing 720 aircraft involved in the test. NASA and the Federal Aviation Administration (FAA) conducted a joint program for the acquisition, demonstration, and validation of technology for the improvement of transport aircraft occupant crash survivability using a large, four-engine, remotely piloted transport airplane in a controlled impact demonstration (CID).
5 Boeing 707-320C (not included were 5 Boeing 707-347C ordered (assigned registration N1506W through N1510W) that were cancelled and acquired by the RCAF [23]). 29 Boeing 720 (720 turbojet and 720B turbofan models; the 720s were ex-Pacific Northern) 6 Boeing 727-200; 30 Boeing 737-200
Besides the current Boeing 737 models flown by Alaska, the airline previously operated Boeing 707, Boeing 720 and Boeing 720B four-engine jets as well as the three-engine Boeing 727-100 and 727-200, and the twin-engine 737-200, 737-400 and Airbus A319 and A320. [5] The last 727 was retired in May 1994. [6]
For all models sold beginning with the Boeing 707 in 1957, except the Boeing 720, Boeing's naming system for commercial airliners has taken the form of 7X7 (X representing a number). All model designations from 707 through 787 have been assigned, leaving 797 as the only 7X7 model name not assigned to a product.
In 1959, important orders for the engine were the Boeing 707-120B and Boeing 720B when American Airlines ordered one 707 powered by JT3D turbofans and KLM ordered a JT3D-powered Douglas DC-8. Earlier 707s and DC-8s had been powered by the JT3C and JT4A turbojets, and the improved efficiency of the turbofan soon attracted the airlines. A JT3D ...