PPRuNe Forums - View Single Post - B777 Max vs Optimum Altitudes

8th September 2007 | 05:52

#3 (permalink)

Jet Man

Joined: Oct 1999

Posts: 134

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If it's like B737NG optimum is based upon engine/airframe performance. Max alt is determined by either:
- structural
- buffet limit (different for JAA and FAA)
- thrust limit (esp at higher ISA deviations - sometimes opt alt is higher than max alt!)

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