Originally Posted by
BoilerUP
when you check in with Center say "negative RVSM" and getting up to altitude shouldn't be an issue...although there very well may be a delay for the climb (which would allow you to get to VMo and have plenty of energy for an aggressive climb rate).
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I don't recommend zoom climbs in RVSM with TCAS equipped aircraft everywhere. Might get somebody hurt, or violated, or worse.