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-   -   CJ-900 floating tendency (https://www.airlinepilotforums.com/regional/113842-cj-900-floating-tendency.html)

deltajuliet 05-23-2018 07:59 AM

One of the other big issues I see trouble with is crosswinds. People mentioned dipping a wing earlier... I'm not sure if they mean slightly, or if they're joking, but it's not a Cessna where you have a ton of clearance and you can set down on one wheel all day. I have a mini heart attack every time the other guy suddenly drops a wing in the flare because it's often done to such an extent that there's no obvious situational awareness of wingtip clearance. Then this happens and you become Internet famous then go to Delta after a little while.

https://media.fox10phoenix.com/media....0_640_360.jpg

Here's a good example of a crosswind landing in a jet:https://www.youtube.com/watch?v=rDtzFmHN57s

Keep the crab in, then at the right point in the flare use rudder to straighten the nose with the runway.

And for what it's worth, conditions being reasonable and assuming stabilized, I start to pull power around 30'. Do it at 10' and you'll float forever. There's also no shame in a firm landing when necessary.

WesternSkies 05-23-2018 08:23 AM


Originally Posted by deltajuliet (Post 2600452)
One of the other big issues I see trouble with is crosswinds. People mentioned dipping a wing earlier... I'm not sure if they mean slightly, or if they're joking, but it's not a Cessna where you have a ton of clearance and you can set down on one wheel all day. I have a mini heart attack every time the other guy suddenly drops a wing in the flare because it's often done to such an extent that there's no obvious situational awareness of wingtip clearance. Then this happens and you become Internet famous then go to Delta after a little while.

https://media.fox10phoenix.com/media....0_640_360.jpg

Here's a good example of a crosswind landing in a jet:https://www.youtube.com/watch?v=rDtzFmHN57s

Keep the crab in, then at the right point in the flare use rudder to straighten the nose with the runway.

And for what it's worth, conditions being reasonable and assuming stabilized, I start to pull power around 30'. Do it at 10' and you'll float forever. There's also no shame in a firm landing when necessary.

I think it takes like 10 (12?) degrees of bank before a wing strike.
Try five the next time you fly.
I’d wager you’ll be surprised how a little goes a long way in this plane.
Statistically the “up” (Downwind wing) is most at risk of a strike which is a product of improper control inputs brought on from fear of a wing strike.

Happyflyer 05-23-2018 08:35 AM


Originally Posted by Space Ranger (Post 2598368)
Holding short of an adjacent runway the other day, we were positioned to see maybe 15-20 a/c land. Variety of regional and mainline types(a320, 737, EMB190/175, CRJ-900) Of these, all managed to put it down nicely at the 1000 footers, except the -900. Of the 6 CRJ-900s, none put mains down at the 1000 footers, and from our perspective, only 3 made mains on by 1500’. Was this day an anomaly or is the CRJ just tougher to land?

What is your tried and tested landing technique for the -900?

That's because your aim point and touchdown point are two different things.
If your touching down on your aim point then at some point, usually over the threshold, your pulling power and starting the roundout.
In the 900 you drive it to your aimpoint until 10' then start the power reduction and roundout which will always put your touchdown beyond the aimpoint. Add in an overcorrection on pitch to avoid a firm touchdown and you'll end up well beyond the aimpoint.

TheAshtar 05-23-2018 11:13 AM

http://avherald.com/h?article=4b8cd2f2&opt=0

Blackhawk 05-23-2018 01:08 PM


Originally Posted by TheAshtar (Post 2600650)
http://avherald.com/h?article=4b8cd2f2&opt=0

Interesting. At the departure end.

flyguy727 05-26-2018 07:22 AM


Originally Posted by deltajuliet (Post 2600452)
One of the other big issues I see trouble with is crosswinds. People mentioned dipping a wing earlier... I'm not sure if they mean slightly, or if they're joking, but it's not a Cessna where you have a ton of clearance and you can set down on one wheel all day. I have a mini heart attack every time the other guy suddenly drops a wing in the flare because it's often done to such an extent that there's no obvious situational awareness of wingtip clearance. Then this happens and you become Internet famous then go to Delta after a little while.

https://media.fox10phoenix.com/media....0_640_360.jpg

Here's a good example of a crosswind landing in a jet:https://www.youtube.com/watch?v=rDtzFmHN57s

Keep the crab in, then at the right point in the flare use rudder to straighten the nose with the runway.

And for what it's worth, conditions being reasonable and assuming stabilized, I start to pull power around 30'. Do it at 10' and you'll float forever. There's also no shame in a firm landing when necessary.

On the 900 I start bring the power back and establishin my pitch just as I cross the beginning of the runway, but I don't take all the power out. As the airplane continues its descent and gets close, I start bring power back again until it's idel, I keep the pitch the same. Nice firm landing.

X-wind, crab into the wind, aim for the up wind side of runway, when you bring power to idel, wind will blow you back to center, a little wing down, not too much, and you should be ok.

Broncofan 05-29-2018 12:31 PM

I have flown a variety of aircraft and for different airlines. It's pretty rare someone lands on the 1000 foot markers unless they are landing on a short runway like BUR or SNA.

tizzizzailslf04 05-30-2018 12:47 PM

Those of you taught to chop the power at 50 in a 900 please tell me your airlines so I can avoid. :confused::eek:

My back hurts just thinking about it.

Quarryman 05-30-2018 05:09 PM


Originally Posted by JayBee (Post 2599910)
He's essentially saying (I think) to just fly the dang thing. Not giving a crap =/= not doing your job in this case.

If you are sweating bullets all the way down final worried about greasing it the potential for a clunker goes up exponentially.

This. Absolutely this.

flyguy727 06-01-2018 11:07 AM


Originally Posted by tizzizzailslf04 (Post 2605459)
Those of you taught to chop the power at 50 in a 900 please tell me your airlines so I can avoid. :confused::eek:

My back hurts just thinking about it.

Chopping power at 50! I don't know what plane you can do that in. Back injury...ouch!

word302 06-01-2018 11:11 AM


Originally Posted by tizzizzailslf04 (Post 2605459)
Those of you taught to chop the power at 50 in a 900 please tell me your airlines so I can avoid. :confused::eek:

My back hurts just thinking about it.

You can roll it on chopping at 50' if you know what you're doing.

tizzizzailslf04 06-01-2018 11:15 AM


Originally Posted by flyguy727 (Post 2606808)
Chopping power at 50! I don't know what plane you can do that in. Back injury...ouch!



This actually works in the 200...and believe it or not STILL leaves you with a bit of excess speed and a float.

But a 900...the only way that works without an absolutely backbreaker of a landing is if you're coming across the threshold too high/fast.

word302 06-01-2018 11:22 AM


Originally Posted by tizzizzailslf04 (Post 2606812)
This actually works in the 200...and believe it or not STILL leaves you with a bit of excess speed and a float.

But a 900...the only way that works without an absolutely backbreaker of a landing is if you're coming across the threshold too high/fast.

If you understand how to manage your descent rate it works just fine in a 900 as well.

tizzizzailslf04 06-01-2018 11:39 AM


Originally Posted by word302 (Post 2606818)
If you understand how to manage your descent rate it works just fine in a 900 as well.

If you are pulling power at 50 and floating gently to the ground in a 900 you are coming across the threshold with too much energy. There's really no way around it. If you are coming in on speed...the bombardier recommended vref speed...when you chop the power it's coming down.

Unless maybe you guys are just flying empty 900's around the country, I suppose.

word302 06-01-2018 11:43 AM


Originally Posted by tizzizzailslf04 (Post 2606831)
If you are pulling power at 50 and floating gently to the ground in a 900 you are coming across the threshold with too much energy. There's really no way around it. If you are coming in on speed...the bombardier recommended vref speed...when you chop the power it's coming down.

Unless maybe you guys are just flying empty 900's around the country, I suppose.

Well I had a check airman who had been flying the plane since it was introduced teach me the technique. My landing became much more consistent and no more float. To each his own. Point was there is more than 1 technique to land an airplane properly.

Slayer1234 06-01-2018 05:32 PM


Originally Posted by word302 (Post 2606832)
Well I had a check airman who had been flying the plane since it was introduced teach me the technique. My landing became much more consistent and no more float. To each his own. Point was there is more than 1 technique to land an airplane properly.

Then please enlighten us because a lot of us have flown that airplane since it came out and the only guys I know who did that carried to much airspeed or nosed it over to gain airspeed. I flew with one guy who would chop the power at 100 feet, nose it over, and then flare while using the trim to assist. He’d be almost full nose up trim as he touched down. I would nearly crap my pants, but he would grease it on every time. Just because it can be done doesn’t mean it should

MidnightHauler 06-01-2018 07:17 PM


Originally Posted by Slayer1234 (Post 2606980)
Then please enlighten us because a lot of us have flown that airplane since it came out and the only guys I know who did that carried to much airspeed or nosed it over to gain airspeed. I flew with one guy who would chop the power at 100 feet, nose it over, and then flare while using the trim to assist. He’d be almost full nose up trim as he touched down. I would nearly crap my pants, but he would grease it on every time. Just because it can be done doesn’t mean it should

That would've been fun dealing with that trim on a balked landing.

JamesNoBrakes 06-04-2018 09:18 PM


Originally Posted by MidnightHauler (Post 2607015)
That would've been fun dealing with that trim on a balked landing.

Dear god, that brings back memories of primary flight instructors landing planes with trim when I was a student. I remember one who thought it was “the way to land”.

MidnightHauler 06-05-2018 12:29 AM


Originally Posted by JamesNoBrakes (Post 2608718)
Dear god, that brings back memories of primary flight instructors landing planes with trim when I was a student. I remember one who thought it was “the way to land”.

It was the way to land if the elevator cable snapped. Had that happen to a buddy of mine in a 172. He landed, but bounced about six times before stopping.

Paid2flyfast 06-07-2018 07:24 PM

Thrust/Airpseed. I fly all three variants of the Canadian pencil tube, they teach in training to pull thrust at 30ft but I as well had "big jet syndrome" (LOL) and would leave the thrust in too long. This combined with flying the top of the bug and a nice gust of wind = 2,000ft float...... I was cured doing billions of MDW turns in the 700 to realize to control airspeed over the threshold. I spent weeks diligently observing the airspeed over the threshold to finally figure out how much that plane will float if you are at the top of the airspeed bug with thrust coming to idle at 30ft... youll never get that plane on the ground.

Also something to think about, I know many CRJ operators have performance Ref speeds as Ref+5... which again, that 5 knots can increase landing distance 10-15%. Also Also, out of technique, If there is a gust, I still will leave the bug at Ref and fly the +5 or +10 to make sure I can control the speed back down to Ref over the threshold to alleviate floating. Seems to work so far.

PiperPower 06-08-2018 02:52 AM


Originally Posted by flyguy727 (Post 2606808)
Chopping power at 50! I don't know what plane you can do that in. Back injury...ouch!

... it’s all about energy management. I did the same thing in the 900. It’s a 70k pound CRJ, not an A380.
Hell, even in the 737 I’ll bring the power to idle at 20-30 feet.

Urban achiever 06-09-2018 08:39 AM

I dunno bout chopping the power to idle in a 900 at 50 ft but at over the threshold I’m walking the power back from 60 something N1to about 50%@50ft. At 30ft quickly walking it back to idle (not just chopping it) equals right in the touch down zone and smooth a majority of the time. This requires being no more than top of the bug though otherwise you’ll float.

I could see the power being chopped at 50 if you’re 5-10kts above ref over the threshold and light... and the comments about proper energy management... I mean yeah it’s doable trimmed out properly and arresting the sinkrate, but that’s a ballsy move that will eventually come back to bite you... like leaving the power in during touchdown instead of idle it may work, but it def isn’t a good idea / sop. Of course weight / environment will change everything above but seems like a good starting point.

flyguy727 06-10-2018 05:28 PM


Originally Posted by word302 (Post 2606818)
If you understand how to manage your descent rate it works just fine in a 900 as well.

I think envoy just ran one off the run way. Didn't work for them.

word302 06-10-2018 06:09 PM


Originally Posted by flyguy727 (Post 2611989)
I think envoy just ran one off the run way. Didn't work for them.

You're contradicting yourself. Chopping the power at 50' would mean less energy at touchdown.

FlyyGuyy 06-11-2018 03:22 AM


Originally Posted by flyguy727 (Post 2611989)
I think envoy just ran one off the run way. Didn't work for them.

Envoy has 0 900s.


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