Bahadir From United States of America, joined Oct 2001, 1758 posts, RR: 11 Posted (9 years 2 months 1 week 3 days 5 hours ago) and read 3732 times:
I have been trying to find the information about Airbus model
numbers and the significance of last 2 digits. I know the first one is the
series number as in A321-1xx and A321-2xx. I also remember that one of the Xs are engine type as in CFM, IAE or PW.
Someone from another list mentioned that
1st digit = model series
2nd digit = engine manufacturer: