Quote:
Originally Posted by JayMahon
In my post I listed a disclaimer that my advice was specific to the Cessna 172. The 172 POH specifically advises against executing slips with full flaps. I know some people still do it but disregarding instruction located in an aircrafts POH is a bad habit.
Jay, no offense.
As I’m teaching an initial CFI I’ll give you the same answer I’ll give him…..what-does-the-book-say?
Not all 172’s are the same, there are many variations in many models.
Some have the same limitations or restrictions and others don’t.
First of all is it in the Limitations Section?
If not is it a Warning, a Caution, a Note or a recommendation?
For instance the starter duty cycle in a 172S is a “recommendation” and not a “Limitation”
Under Emergency Procedures 3.17 descent through cloud the recommended techniques is hands OFF the yoke and small corrections on rudder only. That is not a technique that I would teach for various reasons.
Since you’re heading for your CFI what you’ve been “told” in the past should not necessarily be taken at face value as the person telling you may have been incorrect, quoting the manual for a different sub-model.
Being a CFI is about knowing why and where it says so.
Slip with full flap when frequently done will cause increased and accelerated flap track wear because of the ‘chatter’.
Now since a lot of flightschools use clapped out jalopies its often difficult to tell as it rattles regardless of flap position.
The effect still needs to be taught as you don’t want a solo student experiencing this for the first time on a solo flight as they’re often less then perfect.
Back to the Commercial, in that check ride it’s about demonstration of superior airplane control. Needing a full on forward slip with full flap in order to not overshoot your intended touchdown point is not part of that, at least in my opinion.
It’s not about throwing everything at it including the kitchen sink.
If you find yourself in a situation where you need that you’ve set up the maneuver wrong.
Now a gentle slip for a couple of seconds to loose just a little bit of extra altitude shows insight and skill.
Totally different thing.