Qantas Delays/Cancellations

Continuing from post number 2518 above, the delayed QF94 arrived in MEL at 0106 hours on Wednesday 30 March with departure for LAX as QF93 occurring at 0259, meaning projected arrival in LAX at 2237.

The Tuesday 29 March evening QF12 (LAX - SYD) is now expected to depart at 0045 on Wednesday 30 meaning a SYD arrival time of 0915 hours, an hour and three quarters late on Thursday 31 March.

Wednesday 30 March's LAX to MEL QF94 that is timetabled to push back at 2215 is predicted to be delayed by 65 minutes for a 2320 hours departure. QF claims that arrival in MEL will still be on time at 0800 on Friday 1 April.
 
The delayed Tuesday 29 March late evening QF12 from LAX departed a few minutes ago at 0113 on Wednesday 30 March, two hours and 43 minutes late and 28 minutes than QF had predicted as per the post immediately above. QF expects arrival in SYD on Thursday 31 March to be at 0940 hours, two hours and 10 minutes late.

On Wednesday 30 March, QF549 departed BNE 31 minutes behind time at 1756 but is expected to arrive 24 minutes tardy at 2024 this evening.

The BNE - AKL 1755 hours departure, QF125, is predicted to push back at 1845.
 
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The 28th QF12 out of LAX has a tech issue. Aircraft was subbed for the 744 that was due to operate QF96.

96 was cancelled and the 388 that should have operated QF12 has positioned back empty. A 744 positioned from SYD to MEL to operate today's QF95.
 
On Thursday 31 March, QF2040 from SYD to DBO departed an hour and 59 minutes late at 1014, arriving at 1108 instead of 0915. QF2024 (1025 SYD north to ARM) was cancelled.

Medium haul QF81 from SYD to SIN should depart at 1300 hours this afternoon rather than 1120. 35 minutes is expected to be picked up on the schedule with likely SIN arrival at 1750 rather than 1645.

QF1555, the 1130 from SYD across to 'wine capital' ADL should depart at 1225.

UPDATE: QF496, the 1745 MEL to SYD should depart at 1745.

QF1517 for the short hop from SYD down to CBR is timetabled out at 1650 but should depart 55 minutes late at 1745 this late afternoon.

QF1525, also from SYD to CBR is delayed by an hour to 1940 tonight in its pushback.

QF453 and QF451, respectively the 1700 and 1715 hours SYD down to MEL have both been cancelled meaning 45 minutes during the afternoon weekday peak without a QF-branded flight southbound on one of the top five in terms of passenger numbers worldwide air routes, and one on which traffic has been growing well, a contrast to many other Australian intercapital air routes.

Northbound, from SYD to BNE, QF5414 (SYD - OOL at 1730) has also been cancelled. This may be a codeshare with JQ but is not so showing on the QF website.

The Wednesday 30 March QF96 from LAX departed 63 minutes late at 2318 and should arrive MEL on Friday 1 April at 0850 rather than 0800 - and that is no April Fool's Day morning jest.
 
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QF127 is expected to be delayed on Friday 1 April from SYD for an hour on its trip to HKG. The new departure time is 1205.

A388 VH-OQF on QF94 ex LAX into MEL should arrive at about 0845, 45 minutes late. It is just behind QF96 (B744 VH-OEF) on the same route that should be in at about 0845, 15 minutes early.
 
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Thursday 31 March's QF10 departed LHR at 1430 instead of the scheduled time of 1305 hours - most unusual as this flight tends to run on time ex LHR, even if sometimes it loses time during the DXB stop or in the second sector.

It halted in DXB from 0024 to 0241 hours on Friday 1 April (compared with the timetable of 2320 Thursday to 0135 hours on Friday) and should arrive MEL on Friday evening at 2245, 50 minutes late.

Returning to LHR, the QF website claims that QF9 will depart at 0015 from MEL instead of 2355 but arrive on time into DXB at 0705 on Saturday 1 April. Given that about one hour 38 minutes is the fastest turnaround of a QF A388 I have noted, departure is likely to be at 0025, or later if there are any 'problems' to resolve. A 100 minute 'reversal' must take an enormous amount of cooperation from multiple staff.

The QF LHR schedules have changed a couple of times recently due to the northern hemisphere winter to summer time alteration and now the forthcoming end to DST along lower east coast Oz. There was also a day when QF10 as altered to depart at 1200 rather than 1205: perhaps this was a slot allocation by the folks at London Heathrow.

We sometimes consider that airlines are all about technology but the staff and contractors involved with an A380 demonstrate that it is also fairly labour intensive.

Consider approximately 23 tech and cabin crew on board the aircraft per sector, maybe 10 employees checking passengers in or supervising boarding, a couple of lurking engineers, one or two in an international operations centre and in excess of four baggage handlers and one is already up to a staff of 40 - at least - for say 450 passengers given good (say 80 - 85 per cent loading at a reasonable yield) but not 'booked out' demand for a flight. And then into the mix we can add the catering crew in the truck, catering staff in the specialist centre, LAMEs in the hangars on a pro-rata basis, reservations analysts, lounge 'angels' and kitchen/bar/wiat staff, contract cleaners for the aircraft and the lounge(s), maintenance men (or the occasional contractor) at the airport for the lounges and airline offices and (a declining number of) call centre staff along with accounts payable and receivable staff (maybe less than one each per large aircraft) and computer programmers, plus sales staff who liaise with travel agents and corporate entitities.

Some of the above figures for staff members will be inaccurate so please correct as it is fascinating to obtain a picture of how many staff (or contractors) are really involved (on a total number of eight hour shifts basis, that is 'full time equivalent' but for one day) with one sector of the largest passenger capacity A388 (in this case for QF.)

Then there is every tech crew's friends, the schedulers and flight planners if the latter is a correct description of such individuals' job title.

One cannot forget the refueller and the gentleman driving the sewerage collection vehicle (use your own abbreviation or acronym for the latter please.)

And I haven't even apportioned 0.05 per cent of the managers, CEO, CFO or frequent flier marketers' costs to each aircraft. My list is not exhaustive.
 
Don't forget the 0.1 FTE as a result of assistance given by AFF members like yourself..

No, Quickstatus, yours and Flyerqf's contributions are each worth 0.15 FTE whereas mine are just 0.001 because it's you two who fill in the gaps and come up with an answer to 'what really happened.'

And then there was the AFF member (username started with 'b..' and who I think is South African) who filled us in on the number of connecting passengers ex MEL on VA to SA (South African Airways, not the Australian state that is in so much economic trouble) at Perth, and other wonderful detail...pure gold, so his contribution gets a 0.2 FTE or higher.

Reports 'on the ground' from AFF members who are travelling when flights are delayed or cancelled are terrific to demonstrate to others considering using the the same airline what really goes on in a 'crisis' - and just as importantly, what does NOT occur - are passengers stranded away from home plonked in a 3.5 star or better airline-provided hotel room within four hours of a plane failure being adjudged 'terminal' by airline management in the sense of 'sorry folks, we ain't going nowhere tonight' (to use really incorrect grammar) - are meals included and so on.
 
On Saturday 2 April, QF2108, the 1125 from SYD to CFS departed 80 minutes late with arrival suggested as 1336 instead of 1235, quite a lot of time that may be made up in a relatively short sector.

The 1150 SYD - JNB B744-operated QF63 departed 34 late with it expected in South Africa at 1750, 40 minutes down. QF64 may be a little late departing as a result this evening South African time.

Another very lengthy time and distance wise flight, QF27 is forecast to depart 45 minutes late at 1315 but QF suggests arrival will only be 10 minutes late same day at 1120. Once the flight is airborne a much more accurate time can be given.
 
The Sunday 3 April 2016 SYD arrival of QF18 ex LAX has been delayed by 65 minutes to 0825, but departure on Saturday 2 April had been at 0123 early morning hours rather than 2335 on Friday 1, so in excess of 40 minutes will have been regained en route.

Unfortunately the overnight QF130 from PVG is in a far worse position, having on Sunday 3 April departed at 0141 instead of 1955 hours on Saturday 2 - five hours and 46 minutes late - with SYD Sunday 3 arrival forecast for 1355 instead of 0830. No international flight is showing as delayed ex SYD today thus far due to this late arrival ex PVG.

UPDATE: QF63 departed SYD at 1306, two hours and 16 minutes late. Same day JNB arrival is suggested as 105 minutes late at 1855 this evening. QF64 is shown on the QF website as departing JNB at 1910 back to SYD but that is impossible: expect this B744 to leave at about 2045 barring no discovery of unanticipated problems.
 
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Adding to post 2531 above, QF129 on Saturday 2 April (SYD - PVG) had been diverted to HKG where it stayed for a very long time from 1725 to 2149 hours prior to arrival in PVG at 0004 on Sunday 3 instead of 1830 hours on Saturday.

For the second consecutive night QF130 (this time on Sunday 3 April) has been delayed from its usual 1966 hours departure to a forecast 0150 hours on Monday 4 April with SYD arrival suggested as 1355 hours. Presumably the latter is due to minimum crew rest hours being required following an after midnight arrival at their hotel in PVG on Sunday morning.

The Monday 4 April QF19 (1210 hours SYD - MNL) is shown as departing from the same gate that the delayed QF130 will supposedly pull up at on Monday afternoon but at this stage QF19 looks to be formed by the arriving QF6, a redeye ex SIN.
 
The Monday 4 April 2016 QF9 from MEL departed at 2333, 38 minutes late but only got as far as about Whyalla in South Australia before turning back, being placed in a holding pattern for some hours above Crookwell, Cowra and Goulburn in NSW for in excess of five hours before landing in SYD at 0644 on Tuesday 5 April.

This A388's woes are 'top of the pops' at 'The Age' (Melbourne) newspaper's website at present where it is alleged the problem was 'an engine vibrating above its normal threshold.'

Perhaps one of our esteemed contributors could explain this technical problem in laymens' language. The Tuesday 5 April QF2 is not showing at all on my browser: it does not appear as 'cancelled.'

QF claim that passengers ex MEL from the diverted QF9 will depart SYD 'later this morning' on a 'replacement aircraft.' One wonders how long the delay will be given that QF probably only knew of what must be a serious problem at about 0100 this morning (Tuesday). It is not as if QF has several Airbus A388s lying around spare at any one time: usually there are 11 of the 12 that QF has in its fleet operating flights with one undergoing planned maintenance.

Just as importantly, if this engine problem takes a while to repair, it may have other adverse repercussions for the A388 timetables and passengers booked on such flights.

I assume that the aircraft returned to SYD rather than back to curfew free MEL principally due to SYD being the engineering base.

As a matter of interest, without dumping fuel into the atmosphere, for a typical A380 flight what would be the approximate minimum time that a flight would have to be in a holding pattern to use up fuel so that it could safely land if it had only prior to the holding pattern flown for about an hour?
 
The turbofan engine has various sensors which are then processed by the aircraft computers and displayed to the pilots and fed back to RR as part of its Engine Health Management program.

Each engine type has a performance profile / signature. Vibration amplitude (how much), phase (when), and shaft speed among others is monitored and is compared with the normal performance signature.

As you know QF has a contingency plan in place for the QF1,2,9,10 delays and previously have included turning an aircraft around in DXB. I think it's usually a 9,10 which does a "U-ie"
 
Someone with the technical knowledge may also care to explain why if only one engine had such a problem, it could not simply be shut down on a standalone basis and the flight continue.

From memory one of our esteemed contributors previously explained that engine changeovers usually efficiently occur in a matter of hours, with the 'extra engine' B744 flight from SYD to JNB not that long ago an example.

QF is suggesting that the delayed QF9 will depart from SYD at 0900 on Tuesday 5 April - a very quick passenger stop given this most unusual diversion - and then pause in DXB from 1650 to 1820, arriving LHR at 2325 on Tuesday instead of the timetabled 1415 hours, so if that is correct the airline may not be doing what Quickstatus neatly describes as the DXB 'U turn' contingency plan option.

One Twitter contributor suggests that QF9 had to dump fuel before landing back in SYD.
 
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I remember JB747 said that a 3 engine A380 dragging a limp 4th will not have the range performance of a 4 engine and additionally the westerly routes of the 9,10 imposes a range limitation compared with the 2,10.

There will be several passengers enjoying both MEL and SYD F lounges today. Dinner in one and Breakfast in another
 
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My browser is not displaying all the information but the delayed QF9 may be VH-OQJ. It departed SYD at 0923 (although is yet to take off) which considering the circumstances is a good effort: the enforced SYD stop was less than three hours.

By the way, the overnight media reports about this diversion emanated from AAP not directly from News Ltd or Fairfax.

While infinitesmal compared to QFi's revenues, the cost of such an unplanned diversion must be north of $100,000. Presumably a replacement crew had to be found.
 
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Re QF9: The original OQJ was subbed by OQL after diversion to SYD

This gives them a few extra hours to sort out the issues before OQJ is used for QF11,QF7 departure

QF127 is a 744 today
 
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As a matter of interest, without dumping fuel into the atmosphere, for a typical A380 flight what would be the approximate minimum time that a flight would have to be in a holding pattern to use up fuel so that it could safely land if it had only prior to the holding pattern flown for about an hour?

Well, it would take about 10 minutes to fly a visual circuit, or about 15 if you went out and flew an ILS.
 
Someone with the technical knowledge may also care to explain why if only one engine had such a problem, it could not simply be shut down on a standalone basis and the flight continue.

In aviation there is a term "airmanship". In simple terms, common sense for pilots. Continuing across the very large ocean would be a massive breach of it. Of course there are some issues with fuel consumption too...meaning that the supply of essence would be exhausted at an inconvenient moment.
 

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