You know, sometimes I get a bit strident about how folks shouldn't have such a tough time operating out of a 3000 foot runway at 400 foot elevation. But I have to admit, after my takeoff from Oshkosh I need to lighten my tone. I thought I was going to have to abort that takeoff, the airplane was just so sluggish. I insisted on no less than 5000 feet of runway of my fuel stop, and boy was I glad I did.
We were at gross weight, but the aircraft should easily be able to function. It was the density altitude, which was quite high on a hot humid summer day. I can only image in what the density altitudes are in Arkansas. With that kind of heat and humidity I can see a 3000 foot turf strip being a real issue for lots of folks.
I can only image in what the density altitudes are in Arkansas.
3,600 at KRUE (Russellville -410 MSL) at 5 PM - 42 Celsius ~108F
That's about what it was at my fuel stop in Indiana, and I'll bet I used 2500 feet of asphalt to get off if not 3000. And we were at least 80 pounds under gross. Something new to think about. Glad I didn't need an incident to drum that into my ugly bald skull.
You know, sometimes I get a bit strident about how folks shouldn't have such a tough time operating out of a 3000 foot runway at 400 foot elevation. But I have to admit, after my takeoff from Oshkosh I need to lighten my tone. I thought I was going to have to abort that takeoff, the airplane was just so sluggish. I insisted on no less than 5000 feet of runway of my fuel stop, and boy was I glad I did.
We were at gross weight, but the aircraft should easily be able to function. It was the density altitude, which was quite high on a hot humid summer day. I can only image in what the density altitudes are in Arkansas. With that kind of heat and humidity I can see a 3000 foot turf strip being a real issue for lots of folks.
One wonders whether he might have launched a bit early from bouncing on the grass surface; it is an excellent runway, but sometimes folks get a little sideways and exacerbate the problem while trying to fix it, increasing oscillations.
Very fortunate that there was no fire.
No kidding. The other day I took off on 18 at 57D after topping the tanks off, and was surprised to have to use some of the turf (starting 900' down the rwy) to get off into ground effect. That time I was alone, but with my instructor's 250 lbs in the right seat, we've even had some momentarily scary takeoffs from VLL where the stall horn starts chirping and the ASI struggles to get over 65 KIAS on the climbout, even though the pitch attitude says we should be going faster than that. Even though we're still well under gross, I won't fly with him and full tanks on a day when the DA is over 3000 feet.DA is no joke. My home drome is at 3400'. On a 90 degree day it can get real interesting watching the folks from the valley head home from a weekend after loading up and topping off.
What I find most interesting is how their final resting point leaves nearly 1,000 ft of runway still remaining in front of them. I can't imagine how that could happen without either some serious pilot error or a rudder that failed. Their loss of directional control had to start hundreds of feet or more before their resting point -- which means that they lost it with half the runway left.
There is a reason I stay hundreds of pounds under gross with at Gastons and leave myself a 50% margin on the takeoff performance charts. It's just not worth it.
Their airplane came to rest 2,200 ft from the start of the runway, 170 ft horizontal of the runway centerline, with 1,000 ft of runway remaining.
Nice insight. Sounds more like an unexplained loss of control rather than a DA issue with that bit of info.
The Cirrus has little tolerance for center-line control on a normal day...get a main to plant into some soft crud and Cya.
I've taken off hot, high and moderately heavy with a quartering tailwind once. Once. Thank Odin I had a loooooong runway and a 182.
Personally, I don't do grass fields. Oshkosh was the first time I rolled my wheels on grass since my primary training. My insurance policy says paved only.
No clue what happened here. Glad lives were spared. But if you're going to take pax into grass strips I dare say you should practice soft field techniques with a turf-savvy CFI beforehand. PIC carries some heavy responsibilities.
Your insurance policy on a 182 says "paved only", seriously? Or does it say no "unimproved airports"..big difference.
That's interesting. I've never flown a Cirrus and probably never will, but is there something unique in their gear design?
I've made lousy landings in a bunch of Cessnas - spring steel gear of different thicknesses and heights, tubular steel gear and so on. But takeoffs have been pretty easy in all of them.
What's the difference?
not trying to be a smart*** but you may want to check out your Cherokee or reconsider your technique. That's a whole lot of runway for a cherokee at 3500' DA. like double what you should need. My runway is at 3,610' elev. and I abort if I'm not flying by the 1,600 mark.
Wow, tough crowd here.
The good news is that 3 young men will wake up tomorrow. That doesn't always happen, I seem to remember a Saratoga crashing at Gaston's a couple of years ago with a much worse outcome.
The bad news is that all the Monday morning quarterbacks will have to wait 12 to 18 months for the NTSB report to come out and have their pet theories validated or refuted.
Burt M.
Several times when I have been at Gastons watching aircraft taking off from 06 as we all do, I have seen a lot of pilots rotate a little to soon. I have seen a few come very close to trees when their planes are short of flying speed. I remember a Mooney that scared the hell out of the trees on the left side of the runway. Getting into the air to early with slow airspeed and if you don't lower the nose can leave a pilot with a control problem. I can't see why anyone should have problems at that elevation and a runway that is that long.
The tendency for premature rotation seems to be common at grass strips, especially those with any obstruction (real or perceived) at the end. It's an every-day occurrence on weekends at Cedar Mills Marina at Lake Texoma. Based on observations of pilot technique, I have concluded that precise directional control is more difficult in a nose-high mush down the runway. Height of grass and field conditions (puddles bordering on small lakes) can also be a factor at Gastons and other grass fields.
Here's my take off from Gaston's in a C150, hot day, with passenger, but only about 1/2 fuel load. At 22 seconds into the video, you can briefly hear what sounds suspiciously like the stall warning horn. On either side of the end of the runway at that time were two tall trees. As I fly between them, my wings are below their level.
http://www.youtube.com/watch?v=kDyozdzRHo4&feature=plcp
The tendency for premature rotation seems to be common at grass strips