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Thread: B777 difference between APU to Packs and Packs off T/O
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Old 17th Jun 2016, 05:23
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Wizofoz
 
Join Date: Jun 2001
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AND, if you run both through the OPT, you will find identical performance for both.

Yes, the APU inlet door is open, but apparently the difference is negligible.

The reason the use pack off instead of APU to Pack would be either the APU is U/S, or the APU to PACK function is not fitted (as is the case on earlier model 777s)
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