This is an excerpt from the

Cessna Pilots Association ( CPA ) news letter.

It confirms the disposition of the No Slip with Flaps myth in

Cessnas and the reason. The explanation below is identical

to the one given me on my check ride in a C-150 by the D.E.

Cheers, Kevin

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SLIPS ALLOWED IN A 182?

Dear CPA,

I have just perused the POH and find no reference to the use of

flaps on the subject aircraft while slipping. I seem to recall that the

use of flaps while slipping is not authorized on the 182, but can find

no information in the POH.

I recall hearing that the use of flaps while slipping could induce

premature horizontal stabilizer stall, but in any case, could you refer

me to an information source on this subject.

Thanks.

Tom Walsh, CPA# 43003

Tom,

The 172 manuals suggest, but do not restrict, not slipping the

aircraft with more than 20 degrees of flaps. On that model doing so

would occasionally induce "elevator oscillations." No such notation

appears in the 182 POH, or the POH of any other model Cessna besides

the 172, because no such elevator oscillations have shown up in full

flap slips on other models. Probably has something to do with different

fuselage lengths and tail sizes.

Having intentionally gotten a 172 in this configuration in my flight

instructor days, I did after much effort, get some elevator

oscillation. No big deal, just some momentary change in stick force at

the control wheel. Plane remains fully controllable, however, I can see

where it would be disconcerting for the pilot, particularly if it

occurred during the landing flare. But again this only applies to the

172.

John Frank, CPA Tech Rep mailto:john.frank@cessna.org