Originally Posted by
tubby linton
The origin is irrelevant, it is the current state of the aircraft and the only organisation that will know that is Airbus .The mod state will depend on whether the mods are mandated or the operator decided to upgrade the aircraft. I worked for an airline that had CFM A320s. IAE A321 with numerous differences. There were even differences between the type of CFM56 and whether they had sharklets, gps etc etc. The airline borrowed from a flag carrier a differences sheet which was part of the pre-flight briefing to brief the crew what they were going to operate. I can also think of another large operator that has a mixed single aisle fleet with seven distinctly different sub types.
Yes, once again all perfectly true. But if it's all right with you, I won't be putting money on our Lithuanian friends.