Hi iniBuilds team,

with v1.2.7 I notice a significant increase in fuel consumption by around 1.1 t per hour. According to the Flightplan provided by Simbrief the AVG FF KGS/HR should be 6221 - it is around 7400 during flight. It used to be pretty spot on before v1.2.7 - now it's impossible to reach the destination airport. Anybody experience the same behaviour? Any ideas or workarounds?

Same here, crash in the ocean before 300nm from destination

Plus one for this. Same issue.

same here :(

Did you guys monitor EFOB at destination during the flight? I just flew for a couple of hours and the EFOB stayed at 5.6--5.7 T during the whole flight (but I ended up at the gate with about 4200 kg. Is that consistent with your observations, that the calculated EFOB @ DEST stays reasonable through the flight but ends up overestimating?

28 minutes ago, Gungnir said:

Did you guys monitor EFOB at destination during the flight? I just flew for a couple of hours and the EFOB stayed at 5.6--5.7 T during the whole flight (but I ended up at the gate with about 4200 kg. Is that consistent with your observations, that the calculated EFOB @ DEST stays reasonable through the flight but ends up overestimating?

Yes, EFOB at destination stayed pretty much the same all flight. Maybe increased a slightly bit the longer the flight was and the lower the FF got over time.

Hey, I just finished the second flight with 1.2.7 and fuel factor is like 6 %, yes :-)

https://galerie.klusik.cz/gallery/game-screens/flight-simulators/a350/from-prague-to-princess-juliana-international-airport-lkpr-tncm/?lang=cs&presentation=1&autoplay=1&presentation_fullscreen=1&presentation_music=1&presentation_interval=medium&presentation_transition=slow&presentation_exclusive=0

You can download my simbrief there and crosscheck it with my measured data: LKPR TNCM A350 1.2.7.zip

I made a script which saves my flight data during the flight, maybe it could be helpful to anybody :-)

A350_1.2.7_LKPR_TNCM_fuel_comparison.csv iniBuilds_A350_1.2.7_LKPR-TNCM_Fuel_Analysis_EN.pdf

Edited Saturday at 09:24 PM3 days by klusik
Added PDF with analysis and CSV with data table

Plus one. This has been my experience as well. The SimBrief plan and the EFOB/actual consumption are way different.

Edited Sunday at 07:26 AM2 days by Bacsa Attila

Hello again,

I've now completed the P06 fuel factor flight here: https://galerie.klusik.cz/presentation=1ec2bc09

As I mentioned before here: https://forum.inibuilds.com/topic/41833-127-fuel-flow-increased-significantly/#findComment-101842

Raw data: TNCM LKPR A350 1.2.7 FUEL FACTOR P06.zip

OFP attached for comparsion. I let ChatGPT to compare the data and attach the PDF as well.

It looks like the P06 is about right, so far. I know it could be changed and probably (my guess) is they (inibuilds) tuned it to SU7 and with SU7.1 patch it just went against itself, but this is must my guess :-) With P06 my divergence off plan is about 0,2 %, which is nice, I guess :-P Planned trip fuel was 53 970 kg and real was 53 866 kg :-)

TNCM LKPR simbrief-ofp.pdf

A350_v1.2.7_TNCM-LKPR_P06_Fuel_Analysis_EN.pdf

Edited Sunday at 11:04 AM2 days by klusik
Fuel analysis added

Thanks for your reports everyone. I have logged this with the team to review.

Appreciate your patience!

@iniKyle

Is this potentially related to the MSFS update which made changes to drag profiles?

The aircraft now struggles to climb above FL350 - regardless of weight.

I've attached a photo where the aircraft has climbed to FL370 - well within the performance window, but is struggling to get to .85, so will inevitably run out of fuel as it demands more thrust trying to maintain the ECON speed... at cost index 3!!!

Edited 2 hours ago2 hr by MasterLorenzo

6 minutes ago, MasterLorenzo said:

@iniKyle

Is this potentially related to the MSFS update which made changes to drag profiles?

The aircraft now struggles to climb above FL350 - regardless of weight.

I've attached a photo where the aircraft has climbed to FL370 - well within the performance window, but is struggling to get to .85, so will inevitably run out of fuel as it demands more thrust trying to maintain the ECON speed... at cost index 3!!!

This very well could be the drag/perf issue reported to MSFS/Asobo.

The team will have to do a little more research before we can confirm this though.

We appreciate your patience!