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"The trim is out of range"

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Silly question here. FS2crew says that the trim is out of range when attempting to operating the aircraft (747-400) at very light weights. The FMC is commanding a trim setting of 3.1, but when the captain reads back the trim in the before start checklist, he says "out of range" Does this mean the aircraft should not be operating at this center of gravity?

~Spencer Hoefer

MOBO: Gigabye Aorus z590 elite | CPU: Intel i9-10900k  | RAM: GSKILL RIPJAWS 32GB DDR4 3200 |GPU: Nvidia RTX 2080Ti 11GBOS: Windows 10 

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10 hours ago, byork said:

Are you over the minimum weight for the aircraft?

 

My TOGW was 448305lbs. I wasn't aware of the 747 having a minimum weight for takeoff. I know some aircraft like the MD80 require ballast fuel and can't fly under a certain weight, but I didn't know that was true for the 747 as well. If that's the case that was probably the issue then.

~Spencer Hoefer

MOBO: Gigabye Aorus z590 elite | CPU: Intel i9-10900k  | RAM: GSKILL RIPJAWS 32GB DDR4 3200 |GPU: Nvidia RTX 2080Ti 11GBOS: Windows 10 

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