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[quote user="blue streak 1"]   <blockquote> <div><img src="/TRCCS/Themes/trc/images/icon-quote.gif" /> Sam1:</div> <div>     <blockquote> Speaking of airports, many people assume that the only way to increase air capacity is to build more airports. Not necessarily!  One can increase the size of the airplanes.  For example, there is no reason why a Boeing 747-400 could not be used on the shuttle between New York and Washington SAM1: NOT SO. 1. A 747-400 cannot operate at LGA because it is too heavy for the runway portions that are on the bridges over the bay both RW 22 & RW 13 . 2. A 747-400 cannot operate at DCA due to runway loading conditions. Heaviest plane allowed is B-767 3. use of a B747-400 would require additional separsation for take off and landing of twice the distance of a B737 so no passenger capacity is gained. 4. Try talking the Secret Service into allowing a B747 flying along the river at DCA. . It would greatly increase the lift capability without requiring an increase in airport and air traffic capability, other than to increase the gate capacity at the New York and Washington airports and separations during bad weather. This is exactly what the Australians did between Sydney and Melbourne. Qantas uses Boeing 767s and 747s on this run, although the 747s are run throughs. Again operations are limited at both airports but not at the above airports..   </blockquote>   .  <div style="clear:both;"></div>   </div> </blockquote>   EDIT: One additionaL problem is airspace. Last I knew airplanes between DCA and LGA are limited to 16,000 and 17,000 ft. B747 fuel useage per seat is much higher at those altitudes than a B737. Why do you think airlines do not like to fly at low altitudes? [/quote] This 4,000 plus hour pilot who holds every license (ground and air) the FAA issues knows that everyone of the points you raise could be addressed and resolved.  If nothing else the shuttle could be switched from LGA to Kennedy and Dulles or other area airports or a combination thereof.  The key question is whether it would be cost effective to do so or whether investment in better ground technology would be the better investment. Melbourne had the same load problems with the B747.  The airport managers strengthened the runways.  The cost of doing so, amortized over the expected life of the runways, was minimal. How many hours as pilot in command have you logged?  And on what type of aircraft under what conditions?
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