From: firstname.lastname@example.org (Jean-Francois Mezei) Organization: DECUServe Date: 28 Jul 95 02:53:20 References: 1 2 3
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> Could have been, but wasn't. Both KLM and UTA have 747-200B(SUD) > aircraft, which were built as standard 747-200B models then modified > with a Stretched Upper Deck *after* entering service, and JAL has Pardon my ignorance, but it would seem to me that stretching the upper deck to make it like that of the 300-400 series would be quite a complex operation. I really wonder why an airline would go through the trouble to add a few more seats. Doesn't that involve moving the stairs ? Doesn't that involve changing structural features to support the extended 2nd floor ? Doesn't that affect a lot of wires and mechanical controls ? Doesn't that change the aircraft's centre of gravity ? Aerodynamics ? Would such a conversion actually make a 200 into a 300 as far as maintenance, performance etc are concerned ? Or would these conversions simply extend the top but keep the rest of the plane as a 200 ?