TC957 From UK - England, joined May 2012, 1811 posts, RR: 0 Posted (3 years 5 days 14 hours ago) and read 6275 times:
With many recent threads on the longest 737 routes, it got me wondering why only ANA has bought just the two 737ER models - does Boeing not formally offer this version to airlines ? I mean off course the 737ER and 738ER, I know the 739ER is doing well.
Is it that the extra fuel tanks takes out the available baggage / cargo space making it unattractive to airlines ?
Stitch From United States of America, joined Jul 2005, 33655 posts, RR: 85
Reply 1, posted (3 years 5 days 13 hours ago) and read 6232 times:
Quoting TC957 (Thread starter): Is it that the extra fuel tanks takes out the available baggage / cargo space making it unattractive to airlines?
A mix of low cargo capacity and high operating costs (on long-haul missions, a fair bit of the fuel burned early in the flight is to ferry the fuel you'll be burning later in the flight).
Therefore, the model really only works in an all-Business Class configuration where you generate high revenue per seat (to cover the high operating cost per seat) and you do not need much cargo space (as you're only carrying a few score of bags).
futureatp From United States of America, joined Feb 2000, 226 posts, RR: 0
Reply 2, posted (3 years 5 days 13 hours ago) and read 6165 times:
The 900 and the 900ER model have identical fuel capacity (along with every other NG model I have ever seen. I do believe aux tanks are available on the BBJ models). Its a structural difference (in the landing gear if I remember correctly) allowing it to operate at heavier weights. The 800s and 7s are light enough that the structural improvement was never required. I have personally seen a non ER 900 sit wait out for weather at its destination. The aircraft would have been too heavy arriving at its destination carrying extra fuel required for adverse conditions.
I think there is another difference with cabin emergency exits allowing more pax to fly.