#260

[@fredbixeljr7124]

Thank you for analyzing accidents. as much as we all hate to see them we can learn a lot especially when someone like you analyzes them.

[@HelicopterGround]

Fred Bixel jr thank you very much!

[@heatherhite3197]

Great information KK! Fly Safe everyone!

[@HelicopterGround]

Thanks Heather

[@davidwallace5738]

Another eye opening lesson. Thank you sir.

[@HelicopterGround]

Thank you David!

[@H2R5GSXR]

After many hours I encountered LTE this Summer as I am trying to relearn how to fly. It was a simple 10 mph wind from my 10 o'clock that caused a complete LTE as I flared for a 3-foot hover. The instructor quickly pushed forward on the cyclic and LTE was gone. However, I still had full left pedal as the LTE quit and I gave myself quite a ride until I was stable again. I now have a healthy respect for quartering crosswinds that are mild. Thanks for covering these little events that are lurking, waiting for an unprepared pilot to mess with.

[@HelicopterGround]

Your welcome and thank you for taking the time to share your experience!

[@ronbaier3538]

I really like this series of video's your reviewing of LTE, Ground Resonance, etc, you can really learn a lot from the unfortunate events of others. Not always easy to talk about, Not pointing or heckling other pilots, hopefully learning something so it doesn't happen to you. that last video I'd not seen before. Helo looked real good coming in, but as you mentioned, couldn't tell where the wind was. That last 100' is the most critical. Please be ready folks. No relaxing! Keep up the great topics!

[@HelicopterGround]

Thanks Ron much more to come! :)

[@TheRantingCabbie]

If it's a tailwind or from an angle causing LTE and wind-cocking, then a windsock would be helpful. But of course those aren't everywhere you go. However, if there's a parking lot nearby and you see seagulls just sitting there roosting, they always sit pointed into the wind.

[@HelicopterGround]

Exactly!

[@Deathvalleyherper]

But are the seagulls gonna stick on the ground while you approach, or would they get airborne and become yet another hazard? Birds don't generally hang around till you're on the ground and they can be a bigger problem for helicopters than they are for airliners.

[@TheRantingCabbie]

@@Deathvalleyherper I'm sure you'll get a chance to look closely before they scatter.

[@hira612]

Good presentation

[@HelicopterGround]

Capt. Hira Dahal thanks Captain!

[@stitch1960]

Awesome Kenny. LTE sometimes is the elephant in the room. Guess people only want to talk the loss instead of prevention.

[@HelicopterGround]

Thank you!

[@bawesome5313]

Thanks buddy!

[@HelicopterGround]

Thank you b awesome!

[@caseycrosby9535]

Kenny, I have never experienced LTE that changed my heading more than 40 degrees or so. I worked for some very experienced Bell pilots and they told me that the tail rotor never really stalls and that most pilots are just reluctant to put in enough pedal to regain control. What is your take on this?

[@HelicopterGround]

Yes the big problem is pilots not staying on top of the pedal control. Being a lazy pedal person can aggravate the problem.

[@loupcityairservice9740]

As a Ag helicopter pilot I made sure my Nurse truck driver understood the importance of proper placement of the truck. Often times we land on the road and I always made sure that my takeoff area to the right of the truck is clear.Because if you come off the truck and have a loss of Tailrotor authority you can reduce a small amount of collective and let the helicopter start a slow turn until you reach ETL and you can normally reach ETL at about 3ft AGL. I have had LTA about 5 times in Bell 47s and twice in B206s in the hundreds of thousands of takeoff and landings well I’ve done spraying because normally we are taking off and landing every eight minutes . Most helicopters prefer a slight left cross wind and that will help reduce how much tailRotor is needed

[@HelicopterGround]

Thanks for sharing!

[@PLISNO]

On the third accidents (AStar) it was not LTE, it was a training flight, the pilot was training for hydraulics failure and wasn't capable of keeping he nose straight and crashed, it happened in Brazil a couple of years ago.

[@HelicopterGround]

Thanks for sharing!

[@superdon1chw]

I fly RC helicopters and if you loose tail we use forward pitch and if your doing a auto power up until you get to a open area than auto is this possible in full size ?

[@HelicopterGround]

Thanks for commenting.

[@superdon1chw]

@@HelicopterGround yea any time

[@akkseljohansson3601]

LTE Procedure on a EC135 is actually a AR.

[@akkseljohansson3601]

LTE can happen real quick in any Fenestron equipped aircraft. Especially in low DA and even in cold weather but with a high tailwind component! And that regardless of available power.

[@HelicopterGround]

Thanks for the feedback!

[@mrjweate]

I’m thinking of electric tail rotors, like Bell’s EDAT (Electrically Distributed Ant-Torque). Could this significantly reduce the problems you have outlined?

[@HelicopterGround]

That would be a question for a manufacturer.

[@mervynsands3501]

I often think through how I would react/behave if I lost a tailrotor. Apart from spinning like crazy trying to make a spiralling landing, without dizziness affecting your judgement, would it be possible and to walk away from it?

[@HelicopterGround]

It is very possible if pilot does right thing.

[@FilipFilipovic2233]

You rock!!!

[@HelicopterGround]

Thanks!

[@LifeFlightModels]

Hey Kenny. Question. How common is LTE with helicopters with fenestrons? I only see LTE reports and videos of helicopters with tail rotors. Thanks.

[@HelicopterGround]

All helicopters with a single main rotor and tail rotor are susceptible to LTE. Those helicopters equipped with a Fenestron are affected by a similar phenomenon traditionally known as 'Fenestron Stall'.

[@altonrowell8137]

Let's see if I understand correctly. When a helicopter engine is at max power high tork and has a tail wind also. Looks like it would be more susceptible to LTE. I've noticed watching your videos that pilot's who reduce the collective are able to recover sometimes. Meaning they reduced the tork effects the engine has on the airframe. And giving the tail roter more authority.

[@HelicopterGround]

Thanks for the feedback.

[@kennyj4366]

I have a question. Were all those LTE incidents on warm-hot days at or above 1,500 altitude? I know the Sheriff aircraft was at high altitude attempting a rescue, but I assume that would make a difference. It does with fixed wing.

[@HelicopterGround]

LTE is not necessarily from being at a certain altitude. It can happen at sea level with cold temps. It can occur when the aircraft is at a slow airspeed below 24kts and the wind disturbs the smooth flow of air through the tail rotor. If the wind is strong enough and from the right direction, LTE can occur. Additionally, if you are in a high DA environment you could run out of available power at a slow airspeed and have the same thing happen.

[@falcoperegrinus82]

0:57 Are there actually pilots who don't even know what LTE is?!

[@HelicopterGround]

Sadly some just dont ever think about it.

[@crisrock8225]

Hello Kenny. Great topic. Great video, thanks! Question: Is it possible practice in the air how to recover from LTE or is it just too dangerous?

[@HelicopterGround]

I believe putting yourself in LTE to practice recovering is too dangerous yes!

[@Michael-lg4wz]

2:35 what the heck people bicycling across the helicopter landing area?

[@HelicopterGround]

Thanks for commenting.

[@trent33]

What is a person to do in the event of LTE?

[@HelicopterGround]

We have a free lesson based on the Helicopter Flying Handbook here: kzbin.info/www/bejne/Y2rVe4Osf7iWntE

[@TheRailroaddan]

That first one looks like he clipped the tree, and the wind is a quartering from the left if you look at the windmill in the yard.

[@HelicopterGround]

Thanks for commenting Danny!

[@altoonaflyer]

That one clipped a tree only after it started down, Pilot and student pilot both were seriously injured, both survived with a lot of medical issues they will carry for the rest of their lives. The trees actually helped break their fall and probably contributed to their survival. Ironically, the man running called 911 immediately and the occupants both got medivac helicopter rides to different local trauma centers.

[@jancolabuschagne7181]

Could Some LTE accidents be caused by dust devils on some tipe of why 🤷🏻‍♂️🤷🏻‍♂️

[@HelicopterGround]

Here is how LTE can happen: kzbin.info/www/bejne/Y2rVe4Osf7iWntE

[@livewellwitheds6885]

no helo training, I fly light aircraft but am very interested in aviation. your videos /channel make something that seems very complicated more simple and easy to understand. thanks !

[@HelicopterGround]

Cool, thanks!

[@VR4pt0r]

At 02:53 they were training hydraulic failures on the A-Star and things got out of hand....it wasn’t LTE.

[@HelicopterGround]

Thanks for commenting

[@akkseljohansson3601]

On a AStar you have max 20 sec after hydraulic failure before one of the three MR actuators looses pressure and you’ll lose control on the stick (no way you push it over the emptying actuator!). If hydraulic pressure loss ever happens to you, break the red plastic and turn off the hydraulic immediately! Then fly away - yes, it takes some muscle and very fine coordination, but ist doable, do a nice TRL procedure running landing.

[@VR4pt0r]

@@akkseljohansson3601 correct! I’ve flown many hours on B2s for law enforcement and the are absolutely amazing machines! We used to do hyd failures as part of annual OPCs. 👌🏻👌🏻💪🏻💪🏻🚁🚁🇦🇺🇦🇺

[@timmorris3056]

Thought you were going to explain how it starts and how to correct it.....hmmmmm

[@HelicopterGround]

kzbin.info/www/bejne/Y2rVe4Osf7iWntE

[@DavidRMalloy]

Still haven't heard an explanation as to what causes LTE Although this video did explain shat to do when you experience it.

[@marcelogouveia9614]

That was in Brazil.

[@HelicopterGround]

Thanks for commenting!

[@badmonkey2222]

Nice shirt👍

[@HelicopterGround]

Thanks!

[@patrickmayer9566]

,,,,you can see the tail rotor slowing as he's passing the blue roof........then it finally stops...end of control,,,

[@HelicopterGround]

Thanks for commenting.

[@allentraylor5659]

Ok... So what's the definition ????!

[@HelicopterGround]

kzbin.info/www/bejne/p4LJaJmCdq6dgNE

[@black_baron_net]

☠BLACK BARON☠ It's all about PID main & tail settings, RPMs on main & tail, blade lengths, number of blades main & tail to find the best balance and harmony in aerodynamics.

[@HelicopterGround]

Thanks for the feedback

[@black_baron_net]

​@@HelicopterGround ☠BLACK BARON☠ Ask the "Software Flight Control Engineer". Question N°1. What is the "Recovery Algorithm"? ... Question N°2. Software Engineer, have you testet the "Recovery Algorithm"?

[@jesseakers7298]

Okay, I know nothing, but just learned what LTE means. I'm guessing that if you land a helicopter with your tail into the wind, Then you can have a LTE. Seems odd. Not being a helicopter pilot,. I always thought that tail rotor had lots of control. Guess not.

[@jesseakers7298]

Just studying , now I understand.

[@HelicopterGround]

Thanks for the feedback!

[@dkoz8321]

Loss Of Tail Rotor Effectiveness. A flight condition of helicopter where anti-torque (tail) rotor looses effectiveness due to any cause. Cause can be mechanical malfunction, insufficient available power, tail rotor blade stall, tail rotor blade out of track, damage to tail rotor blade or hub, sudden shift of wind to 10 relative to helicopter (for US CCW rotor rotation) or 2 (European CW rotor rotation), attitude of helicopter relative to air flow, turbulent air around helicopter. LTE can be encountered without any contribution by pilot, so pilot error should not be assumed. Slow ot near zero forward air speed can be a contributing or initiating factor in LTE. Occurs most often on final approach to landing or hovering with high power demand. Can occur in OGE and IGE in any helicopter with main/tail rotor layout. To correct , increase forward airspeed, reduce collective to reduce torque, or go into autorotation if terrain and altitude allows. LTE is an emergency requiring immidieate pilot attention and correction.

[@HelicopterGround]

Thanks for commenting

[@AdmiralQuality]

You criticize pilots for not being able to describe it then neglect to describe it yourself. (Maybe I'm supposed to watch a bunch of other episodes? Still, doesn't seem like a very coherent presentation. You talked entirely about people and nothing about helicopters.)

[@HelicopterGround]

Thanks for commenting

[@doglegjake6788]

im sure if i ever flew a helicopter i would be on your hall of shame ..

[@HelicopterGround]

It's Wall Of Fame!