Air France has to reconfigure 73 Long-Haul a/c : 12 A332, 21 A343, 25 B772ER, and 15 B744.
Grounding an a/c only for the reconfiguration is out of question. In the same time, this reconfiguration can't take too long and can't be done on 3 or 4 years ! and the delay given by AF
(end 2005/2006) is already quite long, but the a/c will be reconfigured during maintenance checks, so that no flight will have to be cancelled because no aircraft is available.
That's why also the priority is given to the A343 & A332 as these a/c type will receive the new concept of 2 classes : Business/Class and use on specific markets. Then the B744 (by next autumn) will be fitted with the new seats (and 2 classes also) and used on the "Sun/leisure destinations" market, when the B773ER will join the fleet and replace them on the "traditional" destinations (LAX