Adam84 From United States of America, joined Jul 1999, 1400 posts, RR: 2
Reply 2, posted (14 years 4 months 2 weeks 5 days 6 hours ago) and read 2051 times:
I thought the 2 numbers in the end of the series was the airline code or something like that. Like say for example 22 is X airline then it would be like 757-222, 767-322, etc. I dont know if I am right but I think I am correct. You can correct me if I am wrong.
Trintocan From United Kingdom, joined Apr 2000, 3258 posts, RR: 4
Reply 4, posted (14 years 4 months 2 weeks 5 days 4 hours ago) and read 2023 times:
In the cases of -436, -438 and 4B5, the 36, 38 and B5 are Boeing codes designating the customer for whom the plane was originally built. These designations remain with the planes for their entire lifespan, even if they are sold to other airlines. As such, they are all 747-400s and there is no difference to them save, perhaps, livery and engines. Some examples - UAL is 22, American is 23, Eastern was 25, Japan Airlines is 46.
Note, though, that since the designation is for the life of the plane, a given airline may easily have 747-400s (or any other Boeing type) with individuals bearing a variety of codes due to mergers, used purchases and so on.
There is a listing of the famous Boeing airlines codes somewhere on the Internet. Perhaps one of our friends could remind us all.