Global 6000 Pilots

[Dale68]

Hi Gang,

Brand new to the Global, coming over from a Gulfstream. Just wondering what sort of fuel loads y'all are getting on hot days. In other words can you put 45,000 pounds on when the temp is 30-35C?

Thanks

[GLEXDRVR]

Not a 6000 but a XRS. We always planned on 44,000lb and never had an issue but we also never saw the full 45,000lb ever

[galaxy flyer]

The feedstock is as important as the temps. Hard to get a full load on unless density is close to .79kg/L. OTOH, I left south Florida with about 1,000 pounds below the CFP planned fuel and arrived TLV right on the required fuel flying the flight plan levels and speed. Time was within 5 minutes of the plan. And that was at LRC. 12+28, landed with about 4,000#.

GF

[CL300]

Float switch rules.. Full fuel = full usable volume

FCU = volume not weight even if your indication is "pounds/hour" you truly burn liters or gallons per hour.

full fuel therefore equals for good numbers on arrival..

If I remember the GLEX correctly (many moons ago).....Fuel mixer was a must after 9 hours+ is it still the case ?

[specialbrew]

43,700-44,000

[FlyMD]

I haved no GLEX experience, but up to now with all larger bizjets (Falcons and Gulfstreams various..), I've followed the same rule: if you fill it up completely, actually calculating the uplift, while factoring in density, and adding it to the previous remaining gives you a better idea of your total fuel on board than any fuel quantity measurement system.

On long flights starting with a full tank, the post-trip burn-off added to the indicated remaining will add up very closely to the calculated pre-take-off fuel...

[galaxy flyer]

You can't a full load in AUTO, use the manual and open all four tanks valves. In MAN, it fuels to the high level sensors; AUTO will stop just short of them to allow for heat expansion. Reduce the pump discharge pressure as you near full wings helps by reducing turbulence in fuel entering the tanks

What FlyMD said if you can get the density number.

GF

[specialbrew]

What GF said......always use MAN instead of AUTO if you want max fuel

[space-shuttle-driver]

What I write here is not a recommendation or a hot tip or an invitation to do so, but merely an insight of what works technically: you can bypass the hi-level detectors by selecting defuel on the panel, that will open the valves again and fuel starts flowing to the tanks. Obviously, you risk a fuel spillage. Happy landings!

[galaxy flyer]

I would strongly disrecommend trying the defuel selection to avoid the HLS--getting a large fuel spill might be the least of the bad outcomes. Damaged tanks or vent system comes to mind.

I've gotten about 45,600# on board in AUTO! Wings were about 15,200 and the tail 2400. High density fuel and +5c temps.

GF

[tommoutrie]

I havent ever got that much in - fiddled about quite a lot to get 44200 in yesterday at +26 and 0.796.

[galaxy flyer]

It was in Yellowknife, seen 45,000+ there three times.

GF

[tommoutrie]

you were right - 45,200 in Vancouver..

[artip]

44800 is the max I have seen. Was at around 29 celsius.
Agree with the above, MAN fuel gets the most in and decrease bowser pressure when 2/3 full.

Have also seen 43700 as max...