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View Full Version : "If you can't make the field, you're too low."



N404CX
04-21-2018, 07:39 PM
When I got my tail wheel endorsement a few years back, my instructor asserted that you should always have enough altitude to reach the field if you loose your engine during the approach.

That sounds good to me, but I see a number of videos online that do not seem to support this recommendation; that is, they're dragging it in.

I'm not good at math, so I don't know how being on the glide slope, or other altitude aid, (VASI) would compare with the glide angle of the aircraft.

All things considered, do you think "If you can't make the field, you're too low." is a good rule to follow:confused: Thanks. ~glen

Bill Berson
04-21-2018, 11:40 PM
Normally yes, but if you want to land on a short bush area you probably need to drag it in. Just part of the risk. Try to avoid words like "always".
For normal runways I like to make the approach high enough so I can at least make the grass threshold.

S3flyer
04-22-2018, 05:19 PM
+1 to normally yes. My normal pattern keeps me within gliding distance of the runway. I pull power to idle when abeam the numbers on downwind then 'glide' through base and final to touchdown on the numbers. I consider it a 'failure' if I have to add power due to miscalculating winds, etc.

George Sychrovsky
04-23-2018, 12:52 PM
I compare the difference between the two approaches to the difference between piloting and airplane driving ,
If you do it S3flyer (http://eaaforums.org/member.php?1596-S3flyer) describes every landing is an engine out practice , and if (when) your engine actually quits , you don't have to think about how and what to do to land it , you will just land the way you always do, be it a runway or a field.

martymayes
04-23-2018, 04:00 PM
99% of the time when you're flying, there is no runway in gliding distance. Why do we pretend the traffic pattern is the only place where the engine might quit?

Frank Giger
04-25-2018, 02:38 PM
This is one of the reasons I'm working towards what amounts to a parachute drop onto the end of the runway, as my aircraft has the glide angle of a rock. :)

However, not every strip is the same, and not all conditions are ripe for it.

I tend to close up to the airport on the downwind, though, as I'm in a very slow aircraft.

When the winds are closing in on max crosswind I tend to shallow up the approach a bit, which requires power.

@ Marty - the wife was noticing my flight paths as described on the map in CloudAhoy and asked if there was a reason I tend to avoid flying over trees in favor of skirting them with fields to one side or another. Yep, dear, there is.

martymayes
04-25-2018, 04:46 PM
This is one of the reasons I'm working towards what amounts to a parachute drop onto the end of the runway, as my aircraft has the glide angle of a rock. :)

Lot of planes have that same glide angle!

Frank Giger
04-26-2018, 10:34 AM
LOL, one of my friends was helping another transition into a Stol 750 (and he's a great pilot but not super familiar) and they chopped the throttle on it from a high position over final.

"Oooh, Mike, watch this," I said to my buddy, "Here comes a classic bounce!"

We were not disappointed!

Some aircraft need a little power on landing to grease it.

Sam Buchanan
04-26-2018, 12:47 PM
High drag aircraft such as what Frank and I have don't require power for a smooth landing following a steep glide, but they do require very precise speed management and timing. It takes discipline and a lot of practice to keep the nose pointed at the ground until you are practically on the runway before breaking the glide and greasing the landing. You only get one chance for the smooth landing before airspeed decays. Carrying just a little power vastly increases the size of the airspeed target and makes landings much less.....exciting.
A bounce occurs when the plane is flared too high and airspeed and inspiration are depleted at the same time. :eek:

WLIU
04-26-2018, 05:35 PM
At a busy airport and/or with a control tower the requested pattern can often take you too far way from the runway to glide in without power. But there is no reason to descend early. Doing so annoys the neighbors and leaves you vulnerable to wind shear and a mechanical or fuel burp. Better to stay high.

Those of us who fly airplanes that glide like manhole covers know that the intent of practicing power off approaches at an airport is to keep fresh our knowledge of glide performance. Engines are reliable so it is easy to let that knowledge get stale. Repetition keeps that knowledge in a place in our brain where it is right there when needed. Kind of like why the every 6 month's sim rides that Part 121 crew have to do seems to be a series of emergencies rather than just easy hops where normal procedures are demonstrated.

"Why do we pretend the traffic pattern is the only place..."

There are some places where you can practice your power-off approaches to farmer's fields or dirt roads. Where I live in the woods, I don't think that's practical. The local flight schools have their students aim at the private strips, like the one I live on. But that's as good as it gets. If they really do lose their engine they will be demonstrating their tree-top landing skills. Of course, on their long cross-country flight they will see geography that is friendlier to sick airplanes.

Best of luck,

Wes

rwanttaja
04-26-2018, 06:11 PM
High drag aircraft such as what Frank and I have don't require power for a smooth landing following a steep glide, but they do require very precise speed management and timing. It takes discipline and a lot of practice to keep the nose pointed at the ground until you are practically on the runway before breaking the glide and greasing the landing.

I descend until I see the ants cringe. Then I pull back.

Ron "Why are my gear legs poking through the wings?" Wanttaja

HAPPYDAN
04-27-2018, 12:26 PM
+1 to normally yes. My normal pattern keeps me within gliding distance of the runway. I pull power to idle when abeam the numbers on downwind then 'glide' through base and final to touchdown on the numbers. I consider it a 'failure' if I have to add power due to miscalculating winds, etc.
This is a very effective technique for landing an LSA. Most, due to light weight, have a very good glide ratio. On short final, slip if too high, add power if too low.

Sam Buchanan
04-27-2018, 03:28 PM
High drag aircraft such as what Frank and I have don't require power for a smooth landing following a steep glide, but they do require very precise speed management and timing. It takes discipline and a lot of practice to keep the nose pointed at the ground until you are practically on the runway before breaking the glide and greasing the landing. You only get one chance for the smooth landing before airspeed decays. Carrying just a little power vastly increases the size of the airspeed target and makes landings much less.....exciting.
A bounce occurs when the plane is flared too high and airspeed and inspiration are depleted at the same time. :eek:


I descend until I see the ants cringe. Then I pull back.

Ron "Why are my gear legs poking through the wings?" Wanttaja

Yep, that's what I'm talkin' about! :)

P.S. Ron, sorry to hear about the challenges in your corner of the community, you are a valuable resource.

rwanttaja
04-27-2018, 04:35 PM
I always come in high, just in case, and get rid of the excess altitude in a slip.

This is yesterday's example, with just a little slip

https://www.youtube.com/watch?v=h2qWolUBmPE

Ron "Thanks, Sam" Wanttaja

Frank Giger
04-28-2018, 09:44 AM
And in the fairness of opposing views, here's how NOT to do that!

(Skip ahead 50 seconds)


https://www.youtube.com/watch?v=VHVmwuQfa5E

:)

[edit] The gun is "noodling" due to the anti-shake processing I did to the video.

martymayes
04-28-2018, 10:17 AM
And in the fairness of opposing views, here's how NOT to do that!


I like it. Gave that asphalt a whippin' "Take that runway.....and that, and that too!"

Frank Giger
04-28-2018, 12:28 PM
If at first you don't succeed, bounce, bounce again.

rwanttaja
04-28-2018, 01:03 PM
The gun is "noodling" due to the anti-shake processing I did to the video.

I notice your video has none of the "jellying" (distant objects forming in waves) that mine do. What's your secret?

Ron Wanttaja

Frank Giger
04-28-2018, 01:14 PM
It's all about placement; the "jelly roll" is usually caused by vibrations, particularly where the camera is moving forwards and backwards.

That and it's a GoPro 3 Silver.

However, my el cheapo camera, when mounted high on a strut, didn't jelly. Lower down it did, though.

gcvisel
09-03-2019, 09:33 PM
When I got my tail wheel endorsement a few years back, my instructor asserted that you should always have enough altitude to reach the field if you loose your engine during the approach.
...
Thanks. ~glen

My instructor was big on coming in high, chopping power, and forward slipping it in. That way, you are just coming down the elevator with no increase in forward speed. When you release the slip, the (fast) descent stops and you are on speed.

I do keep power on if the wind is gusting much, but I'm getting good at slipping it to a spot, and crosswinds get a sideslip, but my approach is almost always high and forward slipping it down.

Works for me...

Mike Switzer
09-13-2019, 11:11 AM
If you are on the ILS approach here there is no way you will make the airport if you lose power, unless you are really close to the end of the runway. There are plenty of safe spots to land if you need to, but if you are doing the ILS approach because you NEED to use it you probably won't be able to see the ground. Fortunately our airport has flat farm ground on the approach ends of most of the runways. A few years back a Bonanza lost power on final & took out 1/2 acre of corn, but the pilot was uninjured.