Hello all,

I was looking through the TSIO-550 Power Settings Chart and noticed that it said the min MP for pressurization was 31.5"....  I'm just wondering if this is true for all IVPs?

I was up to FL170 the other day at 28.5" and the cabin was showing perhaps 7800.  Should I assume that if I was running at 31.5" that the cabin might only have been showing perhaps 5000'?  The reason  I ask is because I'm thinking if we're at FL170 and the cabin is pushing 8000, then at FL250 (or even FL210) the cabin pressure would be well over 10,000'.  I had thought it might have been because I have a leaky cabin or something.... but perhaps its because I'm being too cheap with the fuel....

Thoughts?

-dr



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Regards,

Dico Reijers

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