workhorse
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SFO West Wind Takeoffs To Asia

Tue Jul 10, 2012 2:36 pm

A quick question to those familiar with SFO patterns: what route do follow Asian bound flights when they take off from runways 01 and 10 (yes, I know that in most cases they take off from 28R)?

Do they turn right and fly over San Mateo / Redwood City / Palo Alto to reach the ocean somewhere near Halfmoon Bay or turn left and fly over North Bay - Marin County - Point Reyes?

Thank you very much in advance.  

[Edited 2012-07-10 07:38:22]
 
strfyr51
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RE: SFO West Wind Takeoffs To Asia

Tue Jul 10, 2012 2:47 pm

Quoting workhorse (Thread starter):

Most all the flights fly the "Quiet Bridge" Departure. I've never seen any long range Asian departure take off from Rwy 19 /10in 25 years at SFO. I'm sure it Could happen and Might Have happened. I've just never seen it. Just like I've never seen an approach from the East over the bay. Man that would put the Bay area airports into a Max Tizzy.
 
workhorse
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RE: SFO West Wind Takeoffs To Asia

Tue Jul 10, 2012 4:58 pm

I do not live near SFO but go there quite often and I am sure I have seen heavies taking off from 10L (going near Coyote Point), and I actually have been on one of them, though it was Europe bound. So I just wandered what do they do with Asia bound flights when wind conditions require to take off eastwards.

[Edited 2012-07-10 10:00:06]
 
Alias1024
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RE: SFO West Wind Takeoffs To Asia

Tue Jul 10, 2012 8:22 pm

I'm unfamiliar with the routings Asia bound heavies take out of SFO, but looking at the departure procedures for SFO I'd guess the right turn over the peninsula on the Molen departure. That would seem to make the most sense based on direction of flight.

Quoting strfyr51 (Reply 1):
Most all the flights fly the "Quiet Bridge" Departure.

The "Quiet Bridge" is a visual approach procedure for landings on 28L/R usually given to aircraft arriving on the Modesto Arrival. The "Quiet Three" departure is for departures off of 1L/R or 28L/R and is used almost exclusively during night time as it directs the aircraft over the bay for the first part of their climb, making it quieter (hence the name) for surrounding communities.

Quoting strfyr51 (Reply 1):
Just like I've never seen an approach from the East over the bay. Man that would put the Bay area airports into a Max Tizzy.

Nearly all arrivals into SFO are over the bay, with the predominant traffic flow being all aircraft approachign from the East and landing on the 28s.
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timz
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RE: SFO West Wind Takeoffs To Asia

Tue Jul 10, 2012 10:56 pm

Ordinarily if they depart from SFO runways 10, arrivals are landing on the 19s, and Oakland's traffic is out there to the north too. So no reason the SFO departure would turn left to go to Asia.
 
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DocLightning
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RE: SFO West Wind Takeoffs To Asia

Wed Jul 11, 2012 12:33 am

Quoting Alias1024 (Reply 3):
The "Quiet Bridge" is a visual approach procedure for landings on 28L/R usually given to aircraft arriving on the Modesto Arrival. The "Quiet Three" departure is for departures off of 1L/R or 28L/R and is used almost exclusively during night time as it directs the aircraft over the bay for the first part of their climb, making it quieter (hence the name) for surrounding communities.

When I flew SFO-SYD, we departed 28R and I don't remember a turn. I felt pretty badly for the people under us since it was pretty obvious that we were at max power or close to it (I've never heard or felt a 744 takeoff like that). We just headed straight ahead on runway heading until we got out over the pacific and then turned southwest.

Interestingly, when I was flying on the HA A330 from SFO to HNL this January, we departed 1R and then turned LEFT (not a typo) and then proceeded out to the ocean over Pacifica. Anyone know what that was about?
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timz
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RE: SFO West Wind Takeoffs To Asia

Wed Jul 11, 2012 1:33 am

What's surprising about that?
 
Alias1024
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RE: SFO West Wind Takeoffs To Asia

Wed Jul 11, 2012 4:39 am

Quoting DocLightning (Reply 5):
Interestingly, when I was flying on the HA A330 from SFO to HNL this January, we departed 1R and then turned LEFT (not a typo) and then proceeded out to the ocean over Pacifica. Anyone know what that was about?

Likely because 1R is a little longer than 1L. Usually ATC tries to keep anyone turning left off of 1L, but they'll give you 1R if you need it for operational purposes.

Quoting DocLightning (Reply 5):
When I flew SFO-SYD, we departed 28R and I don't remember a turn. I felt pretty badly for the people under us since it was pretty obvious that we were at max power or close to it (I've never heard or felt a 744 takeoff like that). We just headed straight ahead on runway heading until we got out over the pacific and then turned southwest.

Most of the heavies going to Asia or Australia seem to depart straight out regardless of time of day. Again, I don't fly those, but my guess would be this is due to performance issues as well, since the turn to the right requires a steeper climb gradient than the straight out departure through the gap.
It is a mistake to think you can solve any major problems with just potatoes.
 
workhorse
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RE: SFO West Wind Takeoffs To Asia

Wed Jul 11, 2012 6:00 am

Wow, lots of quality info here, thank you very much!
 
bohica
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RE: SFO West Wind Takeoffs To Asia

Wed Jul 11, 2012 6:00 am

Quoting DocLightning (Reply 5):
I felt pretty badly for the people under us since it was pretty obvious that we were at max power or close to it

I used to live in San Bruno under the 28's takeoff path. It's not as bad as everyone thinks. In many cases depending on the time of day, I could tell what A/C type was going over my house without even looking.  
Quoting Alias1024 (Reply 7):
Most of the heavies going to Asia or Australia seem to depart straight out regardless of time of day. Again, I don't fly those, but my guess would be this is due to performance issues as well, since the turn to the right requires a steeper climb gradient than the straight out departure through the gap.

28R is the longest runway at SFO. That's usually why it is the preferred takeoff runway for long haul flights.
 
9V-SPJ
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RE: SFO West Wind Takeoffs To Asia

Thu Jul 12, 2012 5:05 am

From Flightaware, it looks like SQ1 to VHHH files either the GAP3 or the MOLEN3 departure, same thing with Cathay.

GAP3 - http://flightaware.com/resources/airport/KSFO/DP/GAP+THREE

Departing to the west, it looks like GAP3 goes straight out over the ocean.

MOLEN3 - http://flightaware.com/resources/airport/KSFO/DP/MOLEN+THREE

Same thing for MOLEN3 - out over the ocean when departing to the west (28s)

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