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1. 08:41 AM - Re: AC-520 Vspeeds (Bruce Campbell)
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A few weirdnesses from the manual are:
"Best Rate of climb" in the manual is 96 miles per hour, as is blue
line, but climb speed is specified at 123. I've notices it climbs better
at 123. ( I just hold it low after clearing obstacles, until I get there
when conditions permit. Like a Fouga, whose Vy is 200 mph. Of course,
maybe its just more fun).
"landing approach" in the manual (not listed in the table) is 76 mph,
well below Vmc (not that you *have*
to hold speed above Vmc, btw, but it's not normal practice these days.)
BTW, it settles beautifully at that speed, but of course you need the
runway made, and go-arounds would be an emergency procedure.
Gear 150 mph (That's what I use except in emergency . I think its
actually specified higher, 186mph. ). Flaps up to =BD 150mph Flaps
Full : 110mph. Vne = 260 mph (I've actually seen pretty close to it
twice, once when being called into a search from a logistics mission
(the coast guard doesn't hear speed two-fifteen we'll be there in 10
minutes very often, though they have a few fast fixed wing A/C), once
during a check ride).
It would be interesting to see how these relate to the 560s and 500s,
which should be aerodynamically similar. In particular I think the
specified Vx and Vy in the manual are just plain wrong. If there was a
big variance with the other 5-series that would support the idea.
As for the rest, I can get them from the plane today and list them (and
confirm these), but is your interest historical or practical?
Bruce (N4186B)
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of
CloudCraft@aol.com
Sent: Friday, December 22, 2006 11:43 AM
Subject: Commander-List: AC-520 Vspeeds
Gentlemen!
I haven't been around an AC-520 since the last decade of the last
millennium.
Can anyone give me a list of V-speeds from the AFM?
I realize the V-speed nomenclature wasn't used when the manual (what --
all 4 pages?) was written, but if someone can list the performance
speeds, I'd greatly appreciate it.
Thanks in advance,
Wing Commander Gordon
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