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Tony747-400

747-400 Weight Limitations Question.

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Hi.

According to the FCOM page 10.2 Limitations Section the passenger variant Max Take Off Weight is 394.625KGS

On the Payload screen of the FMC it shows a Max T/O weight of 385.6 KGS a shortfall of 9000 KGS.

Also there is a small difference in the  MAX ZFW. FCOM says 244.9 KGS and the max you can enter via the FMC is 242.7 KGS.

If anyone knows why this is, especially the 9000KGS difference in Max T/O weight I would be interested to know.

 

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1 hour ago, Tony747-400 said:

Hi.

According to the FCOM page 10.2 Limitations Section the passenger variant Max Take Off Weight is 394.625KGS

On the Payload screen of the FMC it shows a Max T/O weight of 385.6 KGS a shortfall of 9000 KGS.

Also there is a small difference in the  MAX ZFW. FCOM says 244.9 KGS and the max you can enter via the FMC is 242.7 KGS.

If anyone knows why this is, especially the 9000KGS difference in Max T/O weight I would be interested to know.

 

Do you have a fuel tank in your horizontal stabilizer?

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23 minutes ago, Matt2218 said:

Do you have a fuel tank in your horizontal stabilizer?

No I don't think so, I guess that's the answer to my question. Will change the option to have it installed and see if that makes the weights correct. 

Thanks for your reply 

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39 minutes ago, Tony747-400 said:

No I don't think so, I guess that's the answer to my question. Will change the option to have it installed and see if that makes the weights correct. 

Thanks for your reply 

Happy to help, took a guess since I was not at my Flightsim machine 🙂

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