Qantas Delays/Cancellations

[Melburnian1]

Indeed, pagingjoan, and apologies for the imbalance. QF496, the 1745 MEL up to SYD is one example, as it was airborne at 1929 hours on Friday 27 May and should arrive at about 2040 tonight, 90 minutes late. B738 VH-VZP is the aircraft.

Across on the west side, QF776, the 1700 PER to MEL (A332 VH-EBP) took off at 1826 and should arrive at about 2331 tonight, 56 minutes late.

 

[pagingjoan]

Indeed, pagingjoan, and apologies for the imbalance. QF496, the 1745 MEL up to SYD is one example, as it was airborne at 1929 hours on Friday 27 May and should arrive at about 2040 tonight, 90 minutes late. B738 VH-VZP is the aircraft.

Yes. One of the many.
QF 464, scheduled for 19.30pm departure is just on Final Call.
QF 490 looks as if it will take off about an hour late, etc. [h=2][/h]

 

[Melburnian1]

QF466, the 1945 hours MEL to SYD has been cancelled on Friday 27 May.

 

[Quickstatus]

QF25 has delayed its departure. There may be 2 reasons - SYD and HND

INFO R. WIND: 260/15 XW MN 12 KTS, MAX 18 KTS. QNH: 1007. EXP INDEP VIS APCH. CL. RWY 34L&R FOR ARRS & DEPS. WX: CAVOK. TMP: 14.

SYD on parallel runway operation for arrivals and departures so the wind affected backlog hopefully will be shortenedz

HND : KAL Fire on runway 34R earlier today shutting its longest runway.

 

[Melburnian1]

Thw wind in SYD remains westerly but is not gusting to the extent it was earlier in the day. However it is far from 'calm.'

QF12 ex LAX on Thursday 26 May departed 37 minutes late at 2307; on Saturday 28 May, it should be 'on blocks' in SYD at 0705, 35 minutes tardy. Simply as a comparison, AA73 departed LAX at an identical time but should arrive at 0652, 18 minutes early.

QF94 departed LAX on Thursday late evening 28 minutes late at 2243 hours; it should be at the MEL terminal on Saturday morning (28 May) at 0735, also 35 minutes behind the schedule. This may at least marginally delay QF93, the 0915 hours back to LAX.

The Thursday 2320 hours from LAX to BNE, QF16, departed at 0011 hours on Friday with arrival on Saturday estimated at 0650, 40 minutes late. So all three flights ex LAX have similar unpunctuality, which is quite rare because the imperative is to try (as much as possible) to keep QF94 on or close to time as it has the tightest turnaround of the three.

 

[Melburnian1]

The SYD Friday 27 May 2016 runway-related delays will mean some late QFi arrivals back into SYD on Saturday 28 May.

QF42 from CGK is expected to depart 40 minutes late on Friday evening at 2045 with SYD Saturday morning arrival as 0635, half an hour behind schedule.

QF19 from MNL should depart at 2130, 85 minutes late as the inbound QF19 arrived at 2014 instead of 1830. QF20 should arrive in SYD on Saturday at 0710, an even hour late.

A much longer flight, QF64 from JNB has been altered to depart an hour late at 2010 this evening JNB time and should arrive in SYD on Saturday arvo an hour behind at 1600.

On Friday, QF583, the 1945 hours early evening SYD - PER took off at 2123 and so should arrive at about 0000, 75 minutes late with VH-EBK, an A332 as its plane.

QF767 from BNE to PER (VH-EBR) is an expected 45 minutes late with likely arrival at 0015 hours on Saturday 28 May.

 

[jb747]

Back to flight radar. Work out at what point the arrival trace differs from the norm, and then ask yourself what might normally happen there.

 

[Melburnian1]

On Saturday 28 May, QF504, the 0705 SYD - BNE did not depart until 0812. Arrival is forecast as 0843 instead of 0735.

The 0715 hours SYD to Lord Howe Island, QF2256, dfeparted at 0756, 41 minutes late with arrival likely at 1015, 35 minutes tardy.

QF2164 from SYD to PQQ, the 0810 hours departure is shown as amended tom 0855 but is later than that. Another QantasLink flight, QF2164 (SYD - CFS) is expected to be 75 minutes late at 0945 hours in departing. QF2002 from SYD to TMW should depart 40 minutes late at 0925 hours.

 

[JohnK]

On Saturday 28 May, QF504, the 0705 SYD - BNE did not depart until 0812. Arrival is forecast as 0843 instead of 0735.

That's a very quick flight. Would love some of them for my commute.

 

[Melburnian1]

That's a very quick flight. Would love some of them for my commute.

JohnK, thank you for the amazingly quick pickup. That should of course read that 'arrival is forecast at 0943 instead of 0835.' Apologies.

QF63, the 1050 SYD to JNB (B744 VH-OJS) did not take off until 1206 but arrival is estimated at about 1725 hours, only 15 minutes behind the timetable.

QF434, the 1300 hours MEL to SYD has been cancelled on Saturday 28 May.

 

[JessicaTam]

I was on QF442 which got to SYD close enough to on time yesterday. My QF864 to OOL was pushed back from 1725 to 1915 so I enjoyed the serenity of the QF J [-]lounge[/-] zoo with everyone else who had been delayed.

There were a few flights announced as cancelled whilst I was in the lounge. I expect the flow on effects will have carried through to today as some planes and crew may have been out of position. :?:

Kudos to the lounge staff in both MEL and SYD. They kept their composure the entire time.

 

[Quickstatus]

Back to flight radar. Work out at what point the arrival trace differs from the norm, and then ask yourself what might normally happen there.

The arrival trace is the same except that OQB's final turn to 300 deg was made a long way away from the usual final turn spot.
The final descent profile and final approach speeds were about the same except that other QF9 had a gradual speed decline from 190kts to 130kts by the time it reached 1000ft. OQB's long final approach started at similar altitude and speed but did not fall below 160kts by the time it descended to 1000ft.

The aircraft need to be in landing configuration at the time of stabilised approach, so landing gear, flaps, slats would have been already configured for landing. Spoilers would be used to adjust aircraft speed on approach. What is the altitude minima for deployment of landing gear?

My guess is that there was some reason the flight control surfaces could not be configured for a slower landing speed and the pilots needed the extra time to adjust to the new reality and therefore did another "racetrack" lap, and also started their final approach further out

Would a problem with one of the flight control surfaces result in reversion to a more "direct" law?


Interestingly VH-OQB has been unfortunate to be involved in 4 medical diversions - landing in DRW, PER, HNL, SYD.

 

[jb747]

Quickstatus...I'll copy this to the pilot thread and reply there.

 

[Melburnian1]

The Friday 27 May 2230 hours QF12 from LAX has been put back to an amended departure time of 0325 on Saturday 28, which as I write is almost two hours in the future. SYD arrival on Sunday 29 May is suggested as 1100 rather than the timetabled 0630 hours.

QF16, the 2320 hours Friday LAX - BNE will instead depart at 0430 for a projected five hour late, 1110 arrival on Sunday 29. This will delay the Sunday QF15 from BNE to LAX.

The delays are because the B744 'tag flight' from JFK to LAX on Friday, QF12, departed at 2350 hours instead of 1810 and is due into LAX on Saturday 28 May at 0205 hours rather than the timetabled 2105 hours on Friday 28.
Working 'backwards', QF11 (the B744 sector) had departed LAX on Friday 28 May at 1353 instead of 0810 hours, arriving at JFK at 2152 instead of 1640 hours.

As an aside, QF94 on Friday evening departed on time from LAX for MEL. Remind me: is QF16 to QF94 (i.e. JFK - LAX - MEL) a 'guaranteed' same (night) connection that QF offers in its ticketing? By 'guaranteed' I mean simply that it meets the minimum connecting time requirement for LAX.

 

[Flyerqf]

The Friday 27 May 2230 hours QF12 from LAX has been put back to an amended departure time of 0325 on Saturday 28, which as I write is almost two hours in the future. SYD arrival on Sunday 29 May is suggested as 1100 rather than the timetabled 0630 hours.

QF16, the 2320 hours Friday LAX - BNE will instead depart at 0430 for a projected five hour late, 1110 arrival on Sunday 29. This will delay the Sunday QF15 from BNE to LAX.

The delays are because the B744 'tag flight' from JFK to LAX on Friday, QF12, departed at 2350 hours instead of 1810 and is due into LAX on Saturday 28 May at 0205 hours rather than the timetabled 2105 hours on Friday 28.
Working 'backwards', QF11 (the B744 sector) had departed LAX on Friday 28 May at 1353 instead of 0810 hours, arriving at JFK at 2152 instead of 1640 hours.

As an aside, QF94 on Friday evening departed on time from LAX for MEL. Remind me: is QF16 to QF94 (i.e. JFK - LAX - MEL) a 'guaranteed' same (night) connection that QF offers in its ticketing? By 'guaranteed' I mean simply that it meets the minimum connecting time requirement for LAX.

All caused by QF15 delayed departure on Friday. If QF15 is delayed out of BNE again tomorrow it will just go on and on. This is a major downside of not having any other 744 at LAX anymore with QF17/18 and QF95/96 gone.

 

[Himeno]

All caused by QF15 delayed departure on Friday. If QF15 is delayed out of BNE again tomorrow it will just go on and on. This is a major downside of not having any other 744 at LAX anymore with QF17/18 and QF95/96 gone.

QF95/96 out of MEL is still around, just reduced to 2 weekly.

 

[Melburnian1]

All caused by QF15 delayed departure on Friday. If QF15 is delayed out of BNE again tomorrow it will just go on and on. This is a major downside of not having any other 744 at LAX anymore with QF17/18 and QF95/96 gone.

Flyerqf, thank you, which begs the question: typically (because aircraft need maintenance as I understand it according to - among other things - how many 'cycles' they have done since the last attention) how often is the B744 operating the QF15 and QF16 roster swapped, and does this involve empty running ('ferry' flight) between SYD - BNE or vice versa, or does it somehow occur in LAX?

 

[Flyerqf]

Flyerqf, thank you, which begs the question: typically (because aircraft need maintenance as I understand it according to - among other things - how many 'cycles' they have done since the last attention) how often is the B744 operating the QF15 and QF16 roster swapped, and does this involve empty running ('ferry' flight) between SYD - BNE or vice versa, or does it somehow occur in LAX?

I think they do mx at LAX - also they can rotate through 95/96 (as Himeno mentioned) or 11/12 on Tuesdays.

 

[Melburnian1]

Interestingly, Flyerqf, QF6007 - a B744 - was timetabled as an empty working this morning at 0630 out of SYD but instead departed at 0736, arriving in BNE at 0906 instead of the timetabled 0805. This was presumably to provide a punctual B744 for the Sunday 29 May QF15 to LAX.

However QF15 is showing as delayed ex BNE from the usual 1000 to 1040 hours.

QF6019, another 'ferry' flight presumably has been timetabled as 1100 ex BNE but should instead depart at 1150 for a SYD arrival of 1330 instead of 1240.

While tiny in cost compared to QF's overall multi-billion dollar annual revenue, these empty B744 workings are an expensive way to change aircraft. However there must be no other alternative available in this case.

QF2020 (0820 hours SYD to ARM) departed at 0854, and not maintaining the schedule, arriving 37 late at 1012.

 

[Flyerqf]

Interestingly, Flyerqf, QF6007 - a B744 - was timetabled as an empty working this morning at 0630 out of SYD but instead departed at 0736, arriving in BNE at 0906 instead of the timetabled 0805. This was presumably to provide a punctual B744 for the Sunday 29 May QF15 to LAX.

However QF15 is showing as delayed ex BNE from the usual 1000 to 1040 hours.

QF6019, another 'ferry' flight presumably has been timetabled as 1100 ex BNE but should instead depart at 1150 for a SYD arrival of 1330 instead of 1240.

While tiny in cost compared to QF's overall multi-billion dollar annual revenue, these empty B744 workings are an expensive way to change aircraft. However there must be no other alternative available in this case.

The cost of not doing it would be greater. A delayed QF15 BNE-LAX has an immediate effect on 4 other flights (LAX-JFK, JFK-LAX, LAX-SYD and LAX-BNE).

QF73 is delayed today as its being operated by the aircraft positioning back from BNE.