Market Presence. The high gross weight A318s are a match for the B737-600, something that was lacking with the original payload/range objectives. However, a 100 seater usually flies shorter sectors such that flight times are likely to approximate an hour. The difference in MTOWs has a significant effect on range capability. While structural changes are unlikely to be necessary to accommodate higher gross weights on a post production basis, there may be some operating empty weight implications. The PW6000 was essentially an all new engine but suffered from delayed certification. An all new engine usually encounters teething problems, potentially impacting reliability but the considerable redesign represented a major delay. To compensate for other teething problems that may occur with an all new engine, launch customers normally receive guarantees and penalty payments to counteract any operational deficiencies. The lack of commonality with the other members of the A320 family saw the CFM56 favored.
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