|Quoting bohica (Reply 10):|
Let's see here.
According to Great Circle Mapper:
DEL-SFO 7706 Miles
SIN-SFO 8446 Miles
Why would AI want to make a stop in SIN which is further from SFO than DEL? This absolutely makes no sense to me.
|Quoting jfk777 (Reply 13):|
Why would AI fly via Singapore to San Francisco when nonstop is more direct and shorter ? IF Singapore Airlines can't make Singapore to the USA nonstop work why would AI think it can ? IF putting a 787 on the route was all that is needed to make it work SIA would be doing it.
I'm not sure whether Air India (or any other airline for that mattter) can just fly the direct route. That part of China has significant operating restrictions because of the high terrain levels in the area (Basically, the problem is this: if you have a decompression, you cannot descend to a level low enough to allow for normal breathing without supplementary oxygen, because those levels are below the mountain peaks. Because of the sheer size of this area, you could be flying for an hour or more before you get a chance to descend low enough.). You either have to carry additional oxygen or just avoid the area entirely (most airlines go for the latter).
As a result, AI
has two choice of routes for a nonstop to SFO
The first backtracks to Afghanistan and then heads north, cross Kazakhstan and Siberia for a near-pole routing across the Arctic Ocean. The second option tracks east across Bangladesh and Myanmar, then clear across the lower-lying parts of China and up the Russian Far East for a North Pacific routing.
nonstop may be a lot longer and more complicated than you think.
If there are solid commercial reasons for flying via SIN
(and the 787 can do SIN
nonstop), it's not as bonkers as it seems at first glance.
|Quoting trex8 (Reply 14):|
Look at BR and CI going to AMS from TPE via BKK. Something makes the numbers work to add 1200nm and 2 1/2 hr flight time!
There is another reason why they fly that way though. Back in the bad old days, Taiwanese carriers were not allowed to fly through mainland Chinese airspace, so they had to detour around China. Back then, flying the Siberian route was not an option, so they went south via Thailand. Initially, the stops in Bangkok were just to take on fuel, but I'm sure by now they're so well established in the market that it's earning them a nice pile of money.
To this day, flights to/from third countries cannot cross directly between mainland Chinese airspace and Taiwanese airspace. They can fly in mainland airspace along the way, but they need to fly through "neutral" (so Hong Kong, Japanese or Philippine) airspace before crossing into Taipei FIR.
I recently flew FRA
, and these were our approximate routings:
The flight time on the return was 14 hours, 12 minutes!
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