Super_cheung From Hong Kong, joined Nov 2001, 29 posts, RR: 0 Posted (11 years 6 months 1 week 6 days 23 hours ago) and read 3842 times:
In the early time, JAL's 747-100 has only 3 windows on the upper deck.
But in late 1980s', it added more windows to some of the upper deck of 747-100. Why did JAL do so?
It makes me confuse in distinguishing JAL's 747-100 and 747-200!
AA727 From United States of America, joined Apr 2003, 124 posts, RR: 0
Reply 1, posted (11 years 6 months 1 week 6 days 22 hours ago) and read 3819 times:
I'm pretty sure that it was due to the seating configuration. When the 747 was introduced, they were often made with lounges on the upper deck. But, once the demand for more seats rose, they outfitted the upper deck with a regular seating configuration. So, they also added more windows for each seat. Hope I was of some help.
747-451 From United States of America, joined Oct 2000, 2417 posts, RR: 6
Reply 2, posted (11 years 6 months 1 week 6 days 19 hours ago) and read 3721 times:
Also note that JAL got 747-SR's starting in 1973, which were based on the 100 with strengthened landing gear, wing slins etc and had a fullset of upper deck windows as opposed to the three in the -146's as no lounge was fitted.
Na From Germany, joined Dec 1999, 10804 posts, RR: 9
Reply 4, posted (11 years 6 months 1 week 6 days 7 hours ago) and read 3553 times:
Your observation is right and wrong at the same time. Boeing made the 10 window upperdeck available for all 747 variants from 1971 onwards (first aircraft was the first Qantas 747-238B). Until then all had 3 windows there.
JAL 747s delivered after 1971 all had the 10 window standard from the beginning, only that (similarly to TWA) 7 of these 10 were plugged to match the 3 window look. You cannot see that on most pictures.
But you can see it here on JA8107 in pictures from 1972, 1986 (7 plugged windows clearly visible) and 1991.