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Green dot speed on cruise high?


chinjh

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Hi, 

Thanks for the post. 

As posted above the GD speed seems correct but the A300s wing is rather old so getting up to the higher FLs mean you can be very close to the GD speed margin. But in the picture you posted it's still safe to keep flying. 

Many thanks, 

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When aircraft are at or reaching their performance limits (in this case altitude), the good side of the envelope and the bad side of the envelope are very close together.  In the case you show, going to fast or going too slow does not leave a lot of margin.  That is straight and level, it changes even more with turns.  

Mark "Crabby" Crabtree AAL311 | PHL
I7-9700KF | 2070 Super | Honeycomb Alpha/Bravo | MFG Crosswind

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