References 483% CONFIDENCEOverall confidence: 83%How well the pin's source and references back up its dates.Weighted average of how firmly 4 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%historylink.org/file/3569historylink.org· Posted Oct 23, 2026· Starts Apr 9, 1967 ✓· 25% of score
HistoryLink: "On April 9, 1967, the prototype Boeing 737 takes off from Boeing Field in Seattle"; This Day in Aviation logs the takeoff at 1:15 p.m. that day.
- [2]85%9 April 1967 | This Day in Aviationthisdayinaviation.com· Added Oct 23, 2026· 25% of score
Logs the 1:15 p.m. takeoff of N73700 from Boeing Field, the pilots, the 2 h 30 min flight to Paine Field and the later NASA 515 career.[1]
- [3]85%Boeing: Historical Snapshot: 737 Commercial Transport (archived)web.archive.org· Added Oct 23, 2026· 25% of score
Boeing's own technical-specification sheet for the 737-100/-200: first flight April 9, 1967, span 93 ft, length 93 ft 9 in, gross weight 111,000 lb, two 14,000-lbf JT8D-7 engines.[1]
- [4]72%Boeing 737 - Wikipediaen.wikipedia.org· Added Oct 23, 2026· 25% of score
Launch order of 19 February 1965 for 21 Lufthansa aircraft, type certificate A16WE on 15 December 1967 and introduction on 10 February 1968.[1]
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