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The Latest Eureka

Something that instructors are particularly fond of, part of the job that keeps us going, is when our clients finally “get” something.  Austin describes his latest and offers a few observations that even veteran pilots would do well to remember. - John

 

 

My Latest Eureka Moment

by: Austin Kemink 

  The last time that I had a light bulb click on for a student was in Las Vegas, I was working with a student pilot on landings.  This particular student had pretty solid stick and rudder skills and after the time we had put in he was doing well at maintaining all of his airspeeds, altitudes, and pattern legs.

 

  His biggest problem was in the flare; the approach would look good all the way up to about five feet above the ground and then the position of the nose would falter... and thus the centerline would wander, the airplane moved sideways, and the landing turned out to be a bit jarring.  We tried a variety of different solutions from aim points to ground effect approaches, and while the pattern and approach were improving the flare was not.  At one point during his landing I watched his body language and his eyes; it was this that helped me to find out what had been causing the trouble.

 

  His eyes had a good balance of outside and inside scanning and he looked comfortable throughout the approach… that is, right up until the flare.  Once we reached the flare he would push back in his seat and his eyes wouldn't move from his aim point until we were on the ground or going around.  This was it!  His eyes weren't at the end of the runway, and when your eyes aren't at the end of the runway it is near impossible to stay centered, much less flare at the correct time.  This is because there is no use of peripheral vision and which causes a "ground rush" type of sensation.  Little wonder that a pilot would have trouble flaring when he sees the ground rushing up to smite him.

 

  Without a proper focus point (the far end of the runway), pilots will flare too early and lose centerline, ground track, coordination, and any sense of how close the ground really is (or isn’t).  I asked my client why he didn't have his eyes at the end of the runway as I had instructed him.  He told me it was because early in his training, before his time with me, he had experienced severe porpoising that led to a prop strike and ever since that time he was very concerned with letting the prop hit the ground.  Naturally, he watched the ground all the way to the flare to compensate.  I informed him that it is our peripheral vision that allows us to flare at the correct time and staring down can actually make matters worse… even lead to the condition he feared!

 

  Outfitted with this new knowledge, we worked exclusively on the flare and where the eyes were focused.  While it wasn't an easy habit to break, he did eventually get it and discovered how much better the view is when looking at the end of the runway as opposed to straight down in front of the airplane.  This is especially important to a Cirrus pilot because of what can be done to the airplane if it is landed incorrectly.

 

  For low-time Cirrus pilots, or just lucky ones: if you've never been in a porpoising plane it can be quite the scary experience… one that you may not be ready for.  The bottom line is to go around at ANY time you feel uncomfortable, particularly if there’s a bounce involved, and work on your landing visuals.

 

 

Final note: Austin’s observation, while in the context of flying with a student pilot working on his Private license, is valid for all manner of Cirrus pilot types.  I have seen many “veteran” pilots over the years who have made this same mistake in knowing where to look.  Even airline pilots have to work on it from time to time!  - John

www.theflightacademy.com 


Posted 10 Sep 2008 11:18 by John Fiscus
Filed under: ,

Comments

Salil C. Tiwari wrote re: The Latest Eureka
on 10 Sep 2008 17:16

I agree with your point and also with your observation that looking towards the distal end of the runway makes landing easier.  I am not very clear with your reasoning as to why it IS so.  In particular, you lost me during the part about the eye movement and its relationship to spatial orientation and proximity to the ground while in motion.

Anxiously awaiting your explanation.

Salil

John Fiscus wrote re: The Latest Eureka
on 19 Sep 2008 6:22

Hi Salil

Here's Austin's response (we don't have a login for him yet so he's using my account):

"It's the same idea as using peripheral vision at night and when scanning for traffic instead of central. Peripheral vision picks up motion (the rods) and the central vision is good for detailed info (cones) but isn't very good for sensing changes in motion. This is why we need to use periphery while landing, as it gives us a reference as to how fast or slow the ground is coming up (or the plane is going down).

Staring at a single point off the nose gives us very little sense of vertical motion. The same can be said of for keeping our longitudinal axis/nose of the aircraft aligned with the centerline of the runway. It's hard to maintain centerline when you're looking straight down, very close to the aircraft's landing spot.  If we look straight down it can give us the illusion of being centered because we have no relative motion or backdrop to compare with."

Please let us know if that helps or if we can take the explanation further.  Thanks for the question!

R. Nevin Rupp wrote re: The Latest Eureka
on 21 Sep 2008 15:16

I have no problem landing my Cirrus.  As a matter of fact I have a "greaser" every--  well at least frequently-- time.  As mentioned, as taught in my transition training from UND at Duluth when I picked up my plane, I keep my eyes on the far end of the runay during flare.  If I flare sufficiently to have the nose wheel off the runway at main gear touchdown at near stall speed, then I briefly loosesight of the end of the runway behind the glare shield.  I am not short in stature, but not tall--5' 10".  Am I flaring too much?  Should I be sitting on a cushion?  Or does every body do this?

John Fiscus wrote re: The Latest Eureka
on 29 Sep 2008 12:14

This sounds like a good landing but it might be getting a tad close from the tail to the runway.  Not sure if this relates to your height but I'm 6' 1" and here's what I use:

The rule of thumb we teach is that if the runway disappears behind the glare shield, the tail is uncomfortably close to the ground.  The tail will strike at about 10 and 1/2 degrees nose up so a good way to see how you're doing would be to take another pilot up with you and have them observe the AI while you land.  If you're getting close to that 10 degree line (and by close I mean 9 degrees), then you might be flaring a little much.

Otherwise, it's sounding good: Mains first, nosewheel last, and a stall horn at touchdown is exactly what you're looking for.  

Just to be safe?  The next time you fly with an instructor have them take special note of your landing techniques.  We've made some good progress on your question with our armchair quarterbacking but the ultimate answer would be to go flying and have a look.

Safe flying!

-Austin and John

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