>>>Does that mean they have to use more power and therefore more fuel on takeoff? Making a fuel stop necessary?
When a runway gets shortened (for construction, or whatever reason) it means that the aircraft using it are not going to be able to "lift" as much weight off the ground as they would if the runway was full length.
Let's try an example with some made-up numbers to illustrate the points... (and before anyone mentions it, yes, I know JetBlue doesn't fly 737s LGB
Let's say a 737-300 can takeoff from LGB
at a max weight of 135,000 lbs with the runway at it's normal full length. If the flight is it's usually full self, the aircraft will weight about 70,000 lbs, and the pax/bags/cargo will be 30,000, for a zero-fuel weight of 100,000 lbs. With a max takeoff weight of 135,000 lbs., that 100,000 lb zero-fuel weight means that you've got room for 35,000 lbs worth of fuel. The burn LGB
is, say, 25,000 lbs, and if you need to arrive JFK
with 10,000 lbs (for alternate, holding, FAR
reserve, etc), everything in this case has worked out perfectly.
, now imagine the above scenario WITHOUT the benefit of a full length runway, a closure that limits your max takeoff weight to, say 120,000 lbs. If you still have a full load of stuff weighing 100,000 lbs, it means that you no longer have room for that 35,000 lbs of fuel that you need to get to JFK
non-stop, so you basically have to operate the flight -someplace- that you can get to within that maximum available 20,000 lbs of fuel. You could, of course, take the full 35,000 lbs of fuel you needed to go non-stop, but that would entail leaving 15,000 lbs. of pax/bags/cargo off the flight (about 70-75 folks) who wouldn't exactly be thrilled about those prospects.
Runway shortenings/closures often do NOT affect flights that are short, like 60-90 minutes in duration, since it takes less overall fuel for those types of missions.
Does that help?
As far as where JetBlue might stop, their cities ONT, LAX and SAN are all close-by, and LAS is on the way, so I'd surmise that they'd stop in one of these places versus an off-line airport.
[Edited 2004-05-24 01:42:19]
[Edited 2004-05-24 01:47:47]
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.