![Why did early 747s have only two or three windows on the upper deck on each side? - Aviation Stack Exchange Why did early 747s have only two or three windows on the upper deck on each side? - Aviation Stack Exchange](https://i.stack.imgur.com/yTzu9.jpg)
Why did early 747s have only two or three windows on the upper deck on each side? - Aviation Stack Exchange
Iran Air Boeing 747-100 (WORLDS LAST): Cockpit-landing, all cabins [AirClips full flight ]─影片 Dailymotion
![sabena on Twitter: "Rare glimpse into the luxurious upper deck lounge of the first Sabena 747. https://t.co/REgIKHAZ1b" / Twitter sabena on Twitter: "Rare glimpse into the luxurious upper deck lounge of the first Sabena 747. https://t.co/REgIKHAZ1b" / Twitter](https://pbs.twimg.com/media/D67Hxr4W0AUwkYz.jpg)
sabena on Twitter: "Rare glimpse into the luxurious upper deck lounge of the first Sabena 747. https://t.co/REgIKHAZ1b" / Twitter
SFO Museum - United Air Lines Boeing 747-100 upper-deck lounge first-class service with stewardesses and steward c. 1970 SFO Museum Collection Gift of United Airlines Archives 1999.047.301 | Facebook
![Why did early 747s have only two or three windows on the upper deck on each side? - Aviation Stack Exchange Why did early 747s have only two or three windows on the upper deck on each side? - Aviation Stack Exchange](https://i.stack.imgur.com/GaL9N.png)