Larry Dighera wrote:
On Mon, 08 Oct 2007 21:43:27 -0400, Mike wrote
in :

The biggest cause of flight delays is the airline scheduling and use of
more Regional jets on the same runways... RJs take essentially the same
runway space as traditional jets and only carry 1/4 to 1/3 as many
passangers. More airline flights trying to use the same runways, so
something has to give.

It would appear that the majority of Boeing's airliner production is
the 737 (118 to 215 seats*) currently:

Boeing Reports Third-Quarter 2007 Deliveries

CHICAGO, Oct. 04, 2007 -- The Boeing Company [NYSE: BA] today
announced deliveries across its commercial and defense operations
for the third quarter of 2007.

Major program deliveries during the third quarter were as follows:

Major Programs 3rd Quarter
2007 Year-to-Date
2007
Commercial Airplanes Programs
737 81 250
747 5 12
767 3 9
777 20 58
Total 109 329

Integrated Defense Systems Programs
Apache (New Builds)
9 17
Chinook (New Builds)
1 7
C-17
4 12
C-32/C-40 0 2
F/A-18E/F and EA-18G 11 33
Satellites (Government & Commercial) 1 4
T-45TS 2 7
F-15 3 6
Delta II - Commercial 1 2
###


* http://en.wikipedia.org/wiki/Boeing_737
Yes, the 737 has been the most popular passenger jet for some time now.
But, the number of aircraft delivered by Boeing is not very
signicicant... Check the number of aircraft delivered or in use by US
airlines and you will find a huge increase in the use of Regional Jets.
Remember, Boeing does not manufacture a RJ (neither does Airbus). The
big RJ producers are Bombardier (Canadair RJ) and Embracer. Also, you
can't look at the aircraft 'owned' by the major airlines because most of
the RJs are flown by the "Commuter" airlines (ASA, Comair, American
Eagle, etc.)
Go to the major airport hubs where the long queues form for takeoff and
look at aircraft types... about half will be RJs these days. (Because
they fly shorter routes and turn around faster, they make more take-offs
and landings than larger, 'standard' jets, compounding the problem.)
Mike

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