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  #21  
Old 2nd July 2009, 01:20 AM
Owen H Owen H is offline
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A TAF is updated, usually every 6 hours.

The initial TAF (according to AJ) had no thunderstorms forecast, but as you say, it was updated getting closer to the mainland, the forecasters added thunderstorms to the forecast.

As they get closer they can also make use of a TTF... Trend Type Forecast, which is updated every 30mins and valid for 3 hours. They would have checked the MEL TTF prior to Sydney, and if it had Thunderstorms on it, then they would divert into Sydney.

The weather that is present in a city is largely irrelivant... it is what the forecast says that is.

Even if the MET people think there is a 30% chance of thunderstorms in this situation, the aircraft diverts. Thunderstorms are a funny one, because it will usually remain on the forecast for a long time, as the forecasters will see big buildups that could, at any moment, develop into a TS. They often never form, or never affect the airport, but if they COULD, then they go on the forecast.
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  #22  
Old 7th August 2009, 10:44 AM
Adam.S Adam.S is offline
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QF94 was in Sydney again today (VH-OQC), arriving approx 10:30am.
Anyone know why on this occasion? I believe the flight also departed from LAX late aswell.

cheers


**update**
QF94 departed Sydney after an aircraft change, VH-OJD continued onto Melbourne.

Last edited by Adam.S; 7th August 2009 at 01:59 PM.
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  #23  
Old 7th August 2009, 03:32 PM
Jason H Jason H is offline
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probably cause OQC departed as QF11 today. Saves the a/c going to MEL and then coming back to SYD to be a few hours late anyway.

Btw just guessing OQC operated QF11. Not sure.
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  #24  
Old 7th August 2009, 11:34 PM
Adam.S Adam.S is offline
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Thanks Jason, you're correct.
OQC operated QF11 this afternoon, OQB on QF31.
OQA wasn't put to use, today after returning with QF12.

Still seems like an unplanned chain of events today with QF94, as the aircraft which flew the last leg into Melbourne today(VH-OJD), returned to Sydney and then operated QF5. However this flight's departure was delayed approx 3 hours.

Last edited by Adam.S; 7th August 2009 at 11:43 PM.
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  #25  
Old 8th August 2009, 02:59 AM
Jason H Jason H is offline
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yeah i can't explain that. What I want to know is how passengers would feel after spending money to fly on the A380 which is delayed, then diverted to SYD, before an aircraft change with less premium economy seats, almost half the business seats, and no first class.

And how could they fit all the pax on that a/c anyway?? Almost all flights from the USA are full at the moment.
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  #26  
Old 8th August 2009, 12:15 PM
Adam.S Adam.S is offline
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and if OQC was always 'scheduled' to go out yesterday afternoon on QF11, why couldn't Qantas leave VH-OQA on QF94?

As they both departed LAX together on the same night (wednesday LA local time)

Perhaps the A380 roster is a little unflexible.
Also with OQB now fixed to the SYD-LHR route, it seems Qantas have made things a little hard for themselves.

The sooner VH-OQD gets here the better!
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  #27  
Old 5th February 2010, 08:14 AM
Adam.S Adam.S is offline
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This morning's QF94 (LAX-MEL) VH-OQD, has been diverted to Sydney.
In terms of time and distance, the flight looked to be running on-time for its scheduled 9:50am arrival into Melbourne.
Is it known why this flight required a diversion: Low on fuel due to headwinds or medical reasons?

cheers
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  #28  
Old 5th February 2010, 10:33 AM
NickN NickN is offline
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On its way to Melbourne now, just passing Canberra at FL380.
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