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734 Max Range?  
User currently offlineEIPremier From United States of America, joined Sep 2000, 1543 posts, RR: 1
Posted (6 years 11 months 2 weeks 2 days 14 hours ago) and read 1813 times:

I have been tracking the AS ANC-LAX flight prior to taking it, and have noticed on at least two occasions that a 737-400 was subbed for a 737-700 on this route (once in each direction). I guess I'm surprised the 737-400 has sufficient range to make the trip non-stop. The distance is 2345 miles, although it must be routed along the coast as a non-ETOPS aircraft, this adds another 50 or so miles. Isn't this pushing max range? I know US used 737-400 for some transcons, although I believe these aircraft had auxilary fuel tanks. I know AS had a 734 flight on ORD-SEA (1721 mi), and the westbound trip actually had to make a fuel stop on one occasion I can recall due to very strong headwinds.

6 replies: All unread, jump to last
 
User currently offlineOyKIE From Norway, joined Jan 2006, 2674 posts, RR: 4
Reply 1, posted (6 years 11 months 2 weeks 2 days 14 hours ago) and read 1800 times:

Some of the Classics have Axillary tanks installed. I am not sure if AS has this on their planes.


Dream no small dream; it lacks magic. Dream large, then go make that dream real - Donald Douglas
User currently offlineAS739X From United States of America, joined Apr 2003, 6006 posts, RR: 24
Reply 2, posted (6 years 11 months 2 weeks 2 days 14 hours ago) and read 1785 times:

Alaska -400 do not has aux tanks. But with a light load the -400 can do the ANC-LAX with sufficient reserve. The flight you see (Flight 106) has less then 60 passengers. The tough flight is LAX-ANC which I don't think can be done with bad weather on the ANC end and I never saw it leave with more the 45 pax.

ASSFO



"Some pilots avoid storm cells and some play connect the dots!"
User currently offlineEIPremier From United States of America, joined Sep 2000, 1543 posts, RR: 1
Reply 3, posted (6 years 11 months 2 weeks 2 days 14 hours ago) and read 1781 times:

AFAIK, AS did not install auxillary tanks on the 734s, because AS carries so much cargo to/from Alaska and that would take away from payload. I know they did (perhaps still do) have auxillary tanks on a few MD-80s, but they are no longer needed since AS uses 737NG for all it's long-haul routes now.

According to the airliners.net aircraft info page, the max range of a 737-400 with full load of 146 pax is 1960 nm which is 2260 mi. Obviously there are a lot of factors (pax/cargo load, temp and wind at departure city, dept runway length, en route weather/winds) that will affect the range. But, I still wonder if this flight would be even possible with max payload.


User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9382 posts, RR: 52
Reply 4, posted (6 years 11 months 2 weeks 2 days 14 hours ago) and read 1762 times:

Why is this route being operated with so few passengers?


If you have never designed an airplane part before, let the real designers do the work!
User currently offlineVHXLR8 From Australia, joined Feb 2005, 500 posts, RR: 3
Reply 5, posted (6 years 11 months 2 weeks 2 days 13 hours ago) and read 1746 times:

Quoting RoseFlyer (Reply 4):
Why is this route being operated with so few passengers?

Possibly just replacement a/c due to light loads perhaps?? (yet still able to uplift substantial cago/mail)


User currently offlineGib From United States of America, joined Mar 2001, 281 posts, RR: 0
Reply 6, posted (6 years 11 months 1 week 4 days 5 hours ago) and read 1494 times:

I took a US 734 that was subbed for a 757 -- CLT-SFO back in the early 90's. We had to make a fuel stop in SJC.

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