@@dale116dot7 aren’t you reading? I said this shouldn’t happen, that flight you are mentioning had an emergency due to a mistake during the fuel charging. When you plan a navigation as a pilot, you HAVE TO take off having enough fuel to arrive to your destination and also to a second Airport in case the first one is closed
Great video. I have only one comment: You should be watching your airspeef at all times. Once you are fully in the slip, all that drag will quickly eat up your airspeed before you realize it. Furthermore, misuse of pitch will also bleed off airspeed very quickly. It's a serious situation I point out routinely to students while learning the manuever. If you aren't paying attention, you can slow to stall speed. So... speed is very important and really should be emphasized during the manuever.
One important aspect that I think is missing - you can control the energy dissipation by varying the amount of rudder used; that allows for less commitment compared to putting flaps down. One questionable piece of advice - the recommendation to begin the slip in the base turn. I just don't know about student pilots applying full rudder in their base turns, that sounds... questionable. Maybe let's wait until we're on final before we do that. Also, no mention of possible erroneous airspeed indication while in a slip (higher or lower depending on the direction of slip), kinda important since we know we'll die for sure if we stall on final with full rudder in.
Yeah, the "don't worry about stalling" was spooky to hear. Air is hitting the pitot and static openings at different than designed normals, which could affect indicated airspeed.
@@TiagoSeiler I can understand where that came from, I always make the mistake of lowering the nose in a sideslip (as advised by the FAA book by the way), and I end up too fast and float.
That is so well explained. I'm just a self taught sim flyer and wasn't aware of this manoeuvre but it seems to work well even in my simple simmulation software. I think I'll find it very useful. Thank you.
It also makes sense to nose away from the cross-wind during forward slip to land because recovering from that slip automatically puts you in the slip for the landing itself.
Good, but would be better if you showed what the turn and slip indicator was showing during this maneuver so we know where the BALL should be when doing it correctly. Thanks! Nice job.
do you remember the parasitic drag curve that you study for the private written and flight test? at low speed you are using just a fraction of your available parasitic drag. if you ever see the rate of decent you achieve with a nose low attitude to reach a speed of around 90 kts you will see immediately that you are going to land and stop far shorter even with the extra speed you built up on final. this may not be as effective with a faster low wing aircraft but in a single engine cessna or other high wing trainer you are far better off to use the higher speed because it will bleed off very quickly if you hold those aileron/rudder inputs in the roundout and flare. try it a few times and you will never slip with that high pitch/low speed attitude again. you don't want to risk stall/spin with those rudders deflected at low speed close to the ground anyway.
"steep slips hould be avoided with flaps greater than 20⁰" There are two things here... 1. "should be avoided" is not a prohibition against a >20⁰ flap setting and slipping the aircraft. (a prohibition looks like what you see in FIKI prohibitions). A more clear explanation of what occurs is found in the 'Crosswind Landing' under section 4 of the POH - You might get some elevator oscillation. 2. "Steep Slips" are what is recommended (not prohibited) against. What is a 'steep slip'? Basically, a normal slip keeps the nose relatively flat or slightly down. a Steep Slip, drops the nose. What happens in a 172 during a full slip executed steeply, is that you get this odd buffering or oscillation in the elevator as dirty air flows over the elevator. Normal slips (i.e. high on final), you don't tend to get the buffering. I've executed full rudder deflection, forward slips with 30⁰ of flaps, and as long as the nose is kept level, there isn't any oscillation. I've also dropped the nose with 30⁰ of flaps and full deflection and felt the oscillation. It's not bad, and not even scary to 99% of student pilots. Go try it! it's not prohibited. it causes oscillation in the elevator. It's not dangerous. go up to 5k feet, do clearing turns and practice⁶
This is correct because greater flap settings lead to a shading effect on the tail but this applies to the C172. Low wing aircraft do not have this specific problem.
@@braininavatnow9197 - Enjoy! Be advised that if you do not avoid a steep slip with 20° or greater flaps, you could exceed the maximum flap speed. Also be advised that the AI may not indicate the correct airspeed as the static port could be in the airstream shadow during a slip.
I did this so much ,in my earlier years that a dent formed in the side of my hired 152.The main reason was i would fly a 5 degree final glide path and found myself too high .It was also caused by my flying very tight patterns .Just keep that nose down low and dont let your speed decay.
That should be called "how not to land". Approach not stabilized, go around, early. It makes sense to teach and practice slips, but to increase options in an engine out situation, etc. A forward slip has no place in a normal landing.
@@mylayovers7233 I've always enjoyed performing them. I thought they were fun in the Cessna I learned in, but when I got my TW endorsement in the Super Decathlon, that's when I really appreciated the concept! No flaps on that bird either. I was a bit timid with applying full rudder (the rudder is much larger than the ones on Pipers and Cessnas). He had to tell me to "Stand on the rudder" a couple of times during my training LOL So glad my CFI didn't say they had no place in normal landings 🤣
If you do forward slip, your engine is already not at idle, so you’ll be able to regain lost airspeed faster in the event that you abort the landing and go around.
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It works even on a 767 that doesn’t have enough fuel for a go-around. Or perhaps no fuel at all.
OG wide-body glider
This shouldn’t happen, you must arrive to your destination to do a go around and even arrive to other destination
@@nicolasvulic4921 Air Canada flight 143, July 23, 1983.
@@dale116dot7 aren’t you reading? I said this shouldn’t happen, that flight you are mentioning had an emergency due to a mistake during the fuel charging. When you plan a navigation as a pilot, you HAVE TO take off having enough fuel to arrive to your destination and also to a second Airport in case the first one is closed
The Gimli glider
Great video. I have only one comment: You should be watching your airspeef at all times. Once you are fully in the slip, all that drag will quickly eat up your airspeed before you realize it. Furthermore, misuse of pitch will also bleed off airspeed very quickly. It's a serious situation I point out routinely to students while learning the manuever. If you aren't paying attention, you can slow to stall speed.
So... speed is very important and really should be emphasized during the manuever.
I was just practicing them for the first time today. I should’ve seen this comment because I got only 10 mph from my stall speed.
@@crazybird199 Excellent. That's great that you recognized your speed before it became an issue. Good job.
And don't forget to check your AFM. Some European training aircraft disallow slipping with flaps extended.
One of the best videos I have seen explaining the concept.
One important aspect that I think is missing - you can control the energy dissipation by varying the amount of rudder used; that allows for less commitment compared to putting flaps down.
One questionable piece of advice - the recommendation to begin the slip in the base turn. I just don't know about student pilots applying full rudder in their base turns, that sounds... questionable. Maybe let's wait until we're on final before we do that.
Also, no mention of possible erroneous airspeed indication while in a slip (higher or lower depending on the direction of slip), kinda important since we know we'll die for sure if we stall on final with full rudder in.
Yeah, the "don't worry about stalling" was spooky to hear. Air is hitting the pitot and static openings at different than designed normals, which could affect indicated airspeed.
@@TiagoSeiler I can understand where that came from, I always make the mistake of lowering the nose in a sideslip (as advised by the FAA book by the way), and I end up too fast and float.
As I understand it the slip is implemented on turning
onto final which seems very logical. The crucial decisions are made on final...
Aren’t most Cessna not supposed to be slipped with flaps?
@@Av8err Those that have 40 flaps aren’t supposed to be slipped with FULL flaps.
That is so well explained. I'm just a self taught sim flyer and wasn't aware of this manoeuvre but it seems to work well even in my simple simmulation software. I think I'll find it very useful. Thank you.
It also makes sense to nose away from the cross-wind during forward slip to land because recovering from that slip automatically puts you in the slip for the landing itself.
Your videos are by far the best thing on the internet. I'm definitely going to purchase your Instrument and Commercial lesson bundle.
Informative, to both, experienced and novice pilots. Thx.
Slip to land was my favorite maneuver while training.
At 1:27 you said "our descent rate drops" but I don't think that's what you meant to say.
Trying to learn some of these for RC planes. Thanks for sharing.
Good, but would be better if you showed what the turn and slip indicator was showing during this maneuver so we know where the BALL should be when doing it correctly. Thanks! Nice job.
Excellent video excellent description and video support. Thank you.
Ryan air practices this maneuver on every landing all the way to the ground.
Great presentation. Thanks
Great visuals - well done and thank you!
do you remember the parasitic drag curve that you study for the private written and flight test? at low speed you are using just a fraction of your available parasitic drag. if you ever see the rate of decent you achieve with a nose low attitude to reach a speed of around 90 kts you will see immediately that you are going to land and stop far shorter even with the extra speed you built up on final. this may not be as effective with a faster low wing aircraft but in a single engine cessna or other high wing trainer you are far better off to use the higher speed because it will bleed off very quickly if you hold those aileron/rudder inputs in the roundout and flare. try it a few times and you will never slip with that high pitch/low speed attitude again. you don't want to risk stall/spin with those rudders deflected at low speed close to the ground anyway.
Can you fwd slip with 30° of flaps?
Cessna doesn’t allow fwd slip with flap; Piper doesn’t care🤷♂️
Does stalling speeds change in a slip? From Vs0 and Vs1 I mean.
Cessna doesn’t allow slips with flaps down , no ?
Flying a J-3 Cub - I always did it.
C172N POH :”steep slips should be avoided with flap settings greater than 20°due…….”. should/shall I respect this on my checkride?
Yes. Always follow POH unless exercising emergency authority as PiC. Most landing slips are not steep.
"steep slips hould be avoided with flaps greater than 20⁰"
There are two things here...
1. "should be avoided" is not a prohibition against a >20⁰ flap setting and slipping the aircraft. (a prohibition looks like what you see in FIKI prohibitions). A more clear explanation of what occurs is found in the 'Crosswind Landing' under section 4 of the POH - You might get some elevator oscillation.
2. "Steep Slips" are what is recommended (not prohibited) against. What is a 'steep slip'?
Basically, a normal slip keeps the nose relatively flat or slightly down. a Steep Slip, drops the nose. What happens in a 172 during a full slip executed steeply, is that you get this odd buffering or oscillation in the elevator as dirty air flows over the elevator. Normal slips (i.e. high on final), you don't tend to get the buffering.
I've executed full rudder deflection, forward slips with 30⁰ of flaps, and as long as the nose is kept level, there isn't any oscillation. I've also dropped the nose with 30⁰ of flaps and full deflection and felt the oscillation. It's not bad, and not even scary to 99% of student pilots.
Go try it! it's not prohibited. it causes oscillation in the elevator. It's not dangerous. go up to 5k feet, do clearing turns and practice⁶
This is correct because greater flap settings lead to a shading effect on the tail but this applies to the C172. Low wing aircraft do not have this specific problem.
@@braininavatnow9197 - Enjoy!
Be advised that if you do not avoid a steep slip with 20° or greater flaps, you could exceed the maximum flap speed. Also be advised that the AI may not indicate the correct airspeed as the static port could be in the airstream shadow during a slip.
Yes
Nice technique, but I don't know. I would always encourage a go-around and try again as the first option if the approach isn't stabilised.
A forward slip to land is required by the ACS tho.
@@JohnLemieux Exactly. It's taught for a reason, and a good one. An emergency landing!
@@Redtail_Pilot Like running out of fuel in a 767 and putting it down on a racetrack.
Do you do this with flaps? If an aircraft is not certified to slip with flaps down, do you loose more altitude with a forward slip, or full flaps?
At least for small planes not if you can help it. I've heard it's possible to do damage using both. It's good if you lose flaps.... Electric flaps
Do flaps during slips pose any dangers?
Mby damage to the flaps if over the max flaps extended
@@boborj555it's about the stabiliser and elevator getting into dirty air. In theory you might stall it
how is a sideslip different? less rudder?
I always get confused but yeah I believe that is the main difference
I did this so much ,in my earlier years that a dent formed in the side of my hired 152.The main reason was i would fly a 5 degree final glide path and found myself too high .It was also caused by my flying very tight patterns .Just keep that nose down low and dont let your speed decay.
That should be called "how not to land". Approach not stabilized, go around, early. It makes sense to teach and practice slips, but to increase options in an engine out situation, etc. A forward slip has no place in a normal landing.
It is perfectly okay to land with slip when you need. Not all aircraft comes with flaps. It is pretty normal for a cub landing in grass strips
@@mylayovers7233 I've always enjoyed performing them. I thought they were fun in the Cessna I learned in, but when I got my TW endorsement in the Super Decathlon, that's when I really appreciated the concept!
No flaps on that bird either. I was a bit timid with applying full rudder (the rudder is much larger than the ones on Pipers and Cessnas). He had to tell me to "Stand on the rudder" a couple of times during my training LOL
So glad my CFI didn't say they had no place in normal landings 🤣
Flaps??? 0 ? 10? 20? 30? C172. Also discuss the airspeed targets please for a C172.
Essential tool if an emergency landing must be made.
I always liken the slip to turning the entire aircraft into an airbrake
If you do forward slip, your engine is already not at idle, so you’ll be able to regain lost airspeed faster in the event that you abort the landing and go around.
🧡
i did it on an airplane game
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