777236ER From , joined Dec 1969, posts, RR:
Reply 2, posted (13 years 6 months 2 weeks 4 days 12 hours ago) and read 1009 times:
It's probably customer-specified. With L/R3 being larger, the aircraft is probably certified to seat more passengers. The smaller door would have weight savings on an aircraft that doesn't need the capasity. I'm not sure, but I think that's the reason.
FLYSAB From Belgium, joined Nov 1999, 106 posts, RR: 5
Reply 5, posted (13 years 6 months 2 weeks 4 days 7 hours ago) and read 965 times:
I fly on both the 340 and 330, -200 and -300, and can attest that the size of the door 3 indeed dictates the max number of pax the aircraft is certified to transport.
In case of a small door 3, it is called an emergency exit and not a passenger door, and the aircraft is certified for 375 pax. With the large door the certification goes for 440 pax.