CRZ Performance and fuel Forecast
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- Posts: 91
- Joined: Wed Jun 28, 2017 8:09 pm
CRZ Performance and fuel Forecast
I did a longer flight over 650 nm 2FL310. This is what I had on the MFD:
Acc. Loadsheet I had ZFW 11100 lbs and had loaded 2000 lbs of fuel for the 650 nm flight
Doing a check at that position showing only 18 lb as arrival airport I did a check.
Remaining flight time 470 nm/262 kts = 1.3 hrs = 1h:20min. Time calculation is correct!
Fuel on board 1340 lbs. 1.3 hrs x 740 lb/hr = 960 fuel to Dest, remaining 380 lb - a bit borderline but still okay.
So the fuel at destination calculation is not matching, though I entered it in the PERF INI correctly at DEP.
The other thing that puzzled me is the following (edited with tank volume changes versus what AFSD showed):
While the MFD says a FF of 2x 370 lbs/hr, the actual measured FF over 10 min flight and extrapolated is only 780 total lbs/hr. That is 5% off between actual consumption and FF showing on MFD.
The internal AFSD measurements seem to be irrelevant as the FF and real consumption is tuned individually.
Comments?
GS 362 and TAS 314 nice tail wind.Acc. Loadsheet I had ZFW 11100 lbs and had loaded 2000 lbs of fuel for the 650 nm flight
Doing a check at that position showing only 18 lb as arrival airport I did a check.
Remaining flight time 470 nm/262 kts = 1.3 hrs = 1h:20min. Time calculation is correct!
Fuel on board 1340 lbs. 1.3 hrs x 740 lb/hr = 960 fuel to Dest, remaining 380 lb - a bit borderline but still okay.
So the fuel at destination calculation is not matching, though I entered it in the PERF INI correctly at DEP.
The other thing that puzzled me is the following (edited with tank volume changes versus what AFSD showed):
While the MFD says a FF of 2x 370 lbs/hr, the actual measured FF over 10 min flight and extrapolated is only 780 total lbs/hr. That is 5% off between actual consumption and FF showing on MFD.
The internal AFSD measurements seem to be irrelevant as the FF and real consumption is tuned individually.
Comments?
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- Posts: 157
- Joined: Sat May 09, 2015 2:33 am
Re: CRZ Performance and fuel Forecast
Was an approach loaded?
I have seen this bug before and I thought they had it fixed.
I have seen this bug before and I thought they had it fixed.
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- Posts: 658
- Joined: Sun May 11, 2014 11:49 am
Re: CRZ Performance and fuel Forecast
Hi,
We will check FF data in PROG and PERF pages.
Thanks!
Tomas
We will check FF data in PROG and PERF pages.
Thanks!
Tomas
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- Posts: 9
- Joined: Wed Dec 12, 2018 12:10 am
Re: CRZ Performance and fuel Forecast
Fuel forecast is being reworked for the next update