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Strange SIN-HAN Flight Routing  
User currently offlinePerthGloryFan From Australia, joined Oct 2000, 751 posts, RR: 0
Posted (9 years 9 months 2 weeks 9 hours ago) and read 3021 times:

Have just completed a SQ176 SIN-HAN and SQ175 HAN-SIN round trip and noted the unusual flight routing, both there and on the return flight.

Hanoi is just about due north north of Singapore so I expected us to fly directly across the Gulf of Thailand, Thailand, Cambodia, Laos and then enter Vietnamese airspace to land at Hanoi.

However, about half way across the Gulf we turned north-east and tracked to Ho Chi Minh City. Overhead HCMC SQ176 turned due east! About 5 minutes later, directly over a largish dam, we headed north-east for another few minutes then directly north to Da Nang. Overhead Da Nang the B777 turned north-west to then track directly to Hanoi.

Three days later my return flight followed the reciprocal route precisely!

Anyone know the reason for this routing which probably adds 30 minutes to the 3.5 hour flight? Is it a requirement of the Vietnamese authorities? Or are there airpsace issues with respect to Laos and/or Cambodia? And if so do these restrictions apply just to Singapore Airlines or to all airlines?

cheers
PGF

4 replies: All unread, jump to last
 
User currently offlineAirbus Lover From Malaysia, joined Apr 2000, 3248 posts, RR: 9
Reply 1, posted (9 years 9 months 1 week 6 days 16 hours ago) and read 2672 times:

Can't answer your question but my many domestic SGN-HAN vv flights also pretty much follow the same routing you explained.

User currently offlineNonrvsmdmf From United States of America, joined Dec 2003, 186 posts, RR: 0
Reply 2, posted (9 years 9 months 1 week 6 days 8 hours ago) and read 2652 times:

Nothing strange about the routing. There are no direct (straight)
airways from SIN to any where in north Vietnam.



I did not forget...I just misplaced the thought...
User currently offlinePerthGloryFan From Australia, joined Oct 2000, 751 posts, RR: 0
Reply 3, posted (9 years 9 months 1 week 6 days 7 hours ago) and read 2646 times:

Nothing strange about the routing. There are no direct (straight)
airways from SIN to any where in north Vietnam.


Ok, it may be "usual" for that flight, but it's still strange that there are no direct airways to anyway in Vietnam from Singapore.

Also, what about Singapore to Phom Penh or Vientiane, and then on from either of those to Hanoi?

PGF


User currently offlineNonrvsmdmf From United States of America, joined Dec 2003, 186 posts, RR: 0
Reply 4, posted (9 years 9 months 1 week 5 days 21 hours ago) and read 2581 times:

PGF

The airway structure to Vietnam is really not strange.

Airways are mainly set up for traffic flow. The majority of
the traffic in that part of the world is east/west.

There are only a couple of ways to get to HAN-SIN. The
way you went or over Bankok and the back east to HAN.






I did not forget...I just misplaced the thought...
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