• This site moved from forums.flightinfo.com to flightinfo.com. Please update your bookmarks.

"Caution Wake Turbulence"

Paladin

Got Quattro?
Joined
Apr 14, 2003
Posts
136
Total Time
Lots
While on final this past weekend in a 172 I was cleared to land just after a XJT E145 was cleared for TO on the same runway. At the end of MY clearance the contrlloer advised, "Cleared to land Rwy22, caution wake turbulence from departing RJ". This was a first. I'd been given that advisory while following a NWA DC-9-30 but never an RJ. Do they really create enough wake to warrant this?...I didn't notice anything at all.
Cheers,
Markus
 

labbats

Zulu who?
Joined
May 25, 2003
Posts
2,593
Total Time
9000
Yes they do. Someone posted a link earlier to a Baron that crashed due to landing in the wake of an ERJ.
 

Russ

Well-known member
Joined
Jan 16, 2002
Posts
731
Total Time
x
I've landed behind 747's and never noticed the wake. Was well aware it was however. Following something on the order of 15 to 20 times the weight you are is worthy of a wake turb advisory.
 

Spinplate

Well-known member
Joined
Jul 7, 2005
Posts
310
Total Time
3000
Any size airplane can and will create enough wake turbulence to upset your flight somehow. Its all about being in the wrong place at the wrong time. One of the worst wakes I have encountered was from a Lear 45 on a high final. His steep descent crossed my path (C-172) on final and it threw me almost 70 degrees to the left before reacting. Just know your wake turbulence rules and try and avoid everyone that is bigger than your 172. If you are thinking,"should I avoid this planes wake"...... then it probably does create one powerful enough to fu*k you up a little. Thats just my experience anyway.
 

NYCPilot

Incorporated.
Joined
Nov 29, 2001
Posts
645
Total Time
.00001
I caught some wake behind a private jet (lear or cit) yrs. ago in a 160 HP Piper. My instructor and I rolled 60 degrees really quickly and rolled right back. My counter corrections almost felt like they were ineffective. It felt just like riding a wave, with no control. I'd say in a 172 you could definitely be rolled strongly. Probably not enough to cause an unrecoverable upset, but some good rock and roll, yeah...
 

Snakum

How's your marmott?
Joined
Feb 21, 2002
Posts
2,090
Total Time
Little
Make no mistake ... if you experienced no wake (Hey! That rhymes!), you either inadvertently followed the rules on landing behind larger aircraft or the wake was gone by the time you got there. And this is usually the case.

I have been absolutely ROCKED by something as small as a DC-9, which ain't much bigger than an RJ. I went to 60 degrees in a Cessna 152 in nothing flat, and as someone else stated, it was as if the controls weren't doing what they're supposed to do and you have to 'ride it'. 60 degrees doesn't sound like much, until it happens to you in a split second and with no warning.

I promise you ... hit an RJ wake in a spam can and you will be a believer. :D

Minh
 

NRHPilot

Well-known member
Joined
Oct 5, 2002
Posts
93
Total Time
100
This might hep a little. The FAA order 7110.65 (controller bible) states this.

"Apply wake turbulence procedures to aircraft operating behind heavy jets/B757 and where indicated to small aircraft behind large aircraft."

Small aircraft=41,000 lbs. and under
Large aircfaft=over 41,000 lbs. to 255,000 lbs.
Heavy=more than 255,000 lbs.
 

Rattler71

order out of chaos
Joined
Dec 26, 2004
Posts
117
Total Time
16000
IF the "RJ" was taking off, and you were landing, it was not wake turbulence, it was "jet blast"


Rattler71
 

Flying Illini

Hit me Peter!
Joined
Mar 9, 2003
Posts
2,291
Total Time
6000
Had a G-V roll me 30 degrees in a Falcon 10 on a 2 mile final, my opposite corrections seemingly had no effect. Then we were clear of it, rolled wings level, and continued to land. I was a half a dot low...my mistake. No airspeed variation and ground track remained along the extended centerline. It's quite a helpless feeling.

I had another wake turbulence experience years ago in an Archer 2. It should have resulted in an incident at the very least and probably an accident. I dipped into my jar of luck and took out a big serving that day. I was forced down at a 40 degree angle to the runway in a three point landing...I don't know how I didn't hit a wingtip, bend the prop, or snap off some gear. I did put a flat spot on each of the three tires...fortunately the only skid marks I left were on the runway and not in my pants...but it was close. And all this when I was flying a dot HIGH on the ILS...I guess that 737 was flying a little high on the approach due to the 757 that he was following.

Live and learn, live and learn.
 

LegacyDriver

Moving Target
Joined
Mar 7, 2004
Posts
1,696
Total Time
Enough
ERJs weigh in the neighborhood of 50,000 pounds. That's a lot for a 2,000 pound Cessna to deal with. I think it is funny hearing someone cautioned for *my* wake in the Legacy because I am usually following much bigger airplanes, but it is an appropriate warning.
 

FR8mastr

Well-known member
Joined
Mar 4, 2002
Posts
803
Total Time
13000+
I was rocked by an Air France 747 passing over me in cruise at FL360, opposite directions, 1000 ft sep. and very little wind aloft. I was in a E 170
 

Mike man

Funk Master Flex
Joined
Oct 8, 2003
Posts
1,387
Total Time
5000+
What about doing good steep turns in a 172 or 150 and hitting your own wake at then end?

I got rocked by a Saab 340 one day in a Mooney.
 

mamba20

Do what now?
Joined
Nov 27, 2004
Posts
1,030
Total Time
000000
If it creates lift, then there is a wake. The greater the lift and the heavier the airplane then the greater the wake. End of discussion.
 

NYCPilot

Incorporated.
Joined
Nov 29, 2001
Posts
645
Total Time
.00001
Mike Oxlong said:
What about doing good steep turns in a 172 or 150 and hitting your own wake at then end?
I remember the first time that happened to me as a student doing steep turns. It sure startled me.
 

J32driver

Strokin it...
Joined
Jan 14, 2004
Posts
716
Total Time
8000+
Rattler71 said:
IF the "RJ" was taking off, and you were landing, it was not wake turbulence, it was "jet blast"


Rattler71
Unless the Cessna has to go around for a water buffalo on the runway... THEN he has a wake turbulence problem. Thats why they issue the warning.
 

rubicon789

Well-known member
Joined
Nov 9, 2004
Posts
178
Total Time
3000+
The B757 is by far the worst wake there is... for some reason the design and weight combine for deadly turbulence. Keep it a dot high on the GS behind them!!!
 

labbats

Zulu who?
Joined
May 25, 2003
Posts
2,593
Total Time
9000
I doubt it's worse than 777 or 747.
 

Baronman

Well-known member
Joined
Apr 3, 2005
Posts
560
Total Time
>8K
Got rocked within the last year on a calm day over TEB while turining onto final into Newark (in an ERJ). Plane shook they rolled 30 degrees knocking the Autopilot off, (control imputs did nothing). Recovered, then it happened again...In the confusion ATC gives us a vector through final because we're following a heavy 76-400. Pax getting off were very shook up (as were we).
 
Top