Pilotpip From United States of America, joined Sep 2003, 3117 posts, RR: 11 Reply 1, posted (9 years 3 months 4 weeks 1 day 19 hours ago) and read 1498 times:
It took nearly 20 years after production ended for the majors to stop flying the 727 and those still haven't been totally killed off. Had 9-11 not happened a few might still be using them. Parts are widely available and inexpensive because there were so many examples made.
The same will apply to 737s, and A320s years down the road when something new comes along. A manufacturer doesn't just stop supporting an old model when it quits making it so airlines like Southwest and Jet Blue have many, many years before they even start to think about this dillema.
DfwRevolution From United States of America, joined Jan 2010, 851 posts, RR: 51 Reply 3, posted (9 years 3 months 4 weeks 1 day 19 hours ago) and read 1490 times:
WN is lucky in that they have a large, if not the largest, voice in how the next generation of 737, or whatever is to replace the 737, is to turn out. But airlines are usually content with this because by the time a design reaches the age that requires replacement, they are willing to invest in the next generation of tech. The convienience of a single fleet type is outweighed by the performance of newer aircraft.
And it isn't as if WN has it easy as pie with the 737. They have 4 737 variants with three engine types- the 737-200Adv with JT9Ds, the 737-300/500 with CFM-3, and the 737-700 with CFM-7