Delta A350 Performance out of FACT

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Delta A350 Performance out of FACT

Unread post by ApexKhumza »

Seeing Delta Airlines DAL25 Flight and wondering what the performance data are for the particular route, with the runway length at FACT and Sea level conditions, what are the takeoff weight, PAX numbers and thrust settings for an A350-900 flying to ATL? Especially compared to the UA B789 operating to EWR.
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Re: Delta A350 Performance out of FACT

Unread post by 7675 »

Using Rwy 19 and a 5kt HW, QNH 1013, the A359 will have a RTOW of 277 000kg to 280 000kg (MTOW 280t) depending on the temp. There is no restrictions off Rwy 01 with those conditions.

Using the Airbus FlySmart program, a 7100nm sector (CPT-ATL is 7070nm direct) with a 25kt HW component (normal for a westerly route) will take 15h22min and burn 95 000kg of fuel. Thats a standard M0.85 cruise with CI of 60.

With a Dry Operating Weight of 140 000kg (pretty average for a A359) and a total fuel uplift of 101 000kg (6000kg reserve) you will have about 36 000kg to 39 000kg for payload.

Delta's A359's take 309 pax. So at 100kg per pax (with bag) that a full flight and space for about 5000-8000kg of freight.
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Re: Delta A350 Performance out of FACT

Unread post by HJK 414 »

7675 wrote: Fri Nov 03, 2023 8:01 am .........
Delta's A359's take 309 pax. So at 100kg per pax (with bag) that a full flight and space for about 5000-8000kg of freight.
Interesting 7675

Do you guys still use 100kg (including 25kg average bag weight) ?
I would have thought the average (calculated weight) would have gone up by now ?
In the USA / (American pax) - the average weight must be close to that 100 kg gross mark (ex Luggage).

JK
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Re: Delta A350 Performance out of FACT

Unread post by 7675 »

HJK 414 wrote: Fri Nov 03, 2023 12:07 pm
7675 wrote: Fri Nov 03, 2023 8:01 am .........
Delta's A359's take 309 pax. So at 100kg per pax (with bag) that a full flight and space for about 5000-8000kg of freight.
Interesting 7675

Do you guys still use 100kg (including 25kg average bag weight) ?
I would have thought the average (calculated weight) would have gone up by now ?
In the USA / (American pax) - the average weight must be close to that 100 kg gross mark (ex Luggage).

JK
To be honest I don’t know the latest numbers my company uses. On recent US flight the average pax weight was 82.4kg. Baggage allowance is normally 23kg plus carry on. I’m not sure what percentage of pax use the full allowance,
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Re: Delta A350 Performance out of FACT

Unread post by ApexKhumza »

7675 wrote: Fri Nov 03, 2023 8:01 am Using Rwy 19 and a 5kt HW, QNH 1013, the A359 will have a RTOW of 277 000kg to 280 000kg (MTOW 280t) depending on the temp. There is no restrictions off Rwy 01 with those conditions.

Using the Airbus FlySmart program, a 7100nm sector (CPT-ATL is 7070nm direct) with a 25kt HW component (normal for a westerly route) will take 15h22min and burn 95 000kg of fuel. Thats a standard M0.85 cruise with CI of 60.

With a Dry Operating Weight of 140 000kg (pretty average for a A359) and a total fuel uplift of 101 000kg (6000kg reserve) you will have about 36 000kg to 39 000kg for payload.

Delta's A359's take 309 pax. So at 100kg per pax (with bag) that a full flight and space for about 5000-8000kg of freight.
Quite interesting indeed, The A359 seems an excellent lifter out of FACT... Should be making for decent profit margins for DL. I'm sure the B789 has more TOW restrictions? So basically FACT-ATL can have a higher payload potential compared to FAOR-ATL?
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Re: Delta A350 Performance out of FACT

Unread post by Ned Yakman »

Been hearing anecdotal reports of DL A359 delays out of FACT due to last minute offloading of cargo to stay within W&B and range limits. (Two incidents were accounts I received from one of the industry's most credible analysts who twice visited family in SA this year). I checked this with an expert at Airbus who confirmed DL's operation was on the aircraft's limit, but said a software update was in the offing to increase the A359's performance limits.
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Re: Delta A350 Performance out of FACT

Unread post by GL »

Ned Yakman wrote: Fri Nov 10, 2023 10:01 pm Been hearing anecdotal reports of DL A359 delays out of FACT due to last minute offloading of cargo to stay within W&B and range limits. (Two incidents were accounts I received from one of the industry's most credible analysts who twice visited family in SA this year). I checked this with an expert at Airbus who confirmed DL's operation was on the aircraft's limit, but said a software update was in the offing to increase the A359's performance limits.
Amazing that a software update changes physical limitations - do you know more about how? More performance from the engines? - or does it unload some of the those heavy megabytes of RAM in the FMS? #-o
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Re: Delta A350 Performance out of FACT

Unread post by 7675 »

Amazing that a software update changes physical limitations - do you know more about how? More performance from the engines? - or does it unload some of the those heavy megabytes of RAM in the FMS? #-o
There have been no engine thrust increases for the A350’s. Not sure what this software change refers to.
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Re: Delta A350 Performance out of FACT

Unread post by 34south »

Improved hot & high take-off performance for greater operational flexibility
These latest A350s will also benefit from an enhanced take-off performance especially when operating out of challenging airports (high altitude, short runways, hot weather etc.). To this end Airbus has introduced software evolutions which regulate the slat and flap positions, and has also implemented a faster landing gear retraction cycle – conferring greater obstacle clearance and reduced aerodynamic drag.

With these changes, the A350-900 could, on average, benefit from 3.5 additional tonnes of available take-off weight (e.g. for extra fuel and/or payload uplift) from a limiting runway, while the larger A350-1000 benefits from an approximate 2.5 tonne improvement. “


Asymmetric wing morphing after engine failure = less rudder inputs required = less drag
Last edited by 34south on Sat Nov 11, 2023 9:47 pm, edited 1 time in total.
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Re: Delta A350 Performance out of FACT

Unread post by GL »

Thank you - great gen!
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Re: Delta A350 Performance out of FACT

Unread post by GCronselaar »

Would love to know what a software upgrade costs...
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