What did I do wrong??

[Mark89114]

I recently landed at KRVS and made an acceptable approach and landing in busy traffic, so I was a little more aggressive on brakes, but no tire screaching, flat spots, etc.  As plane was slowing started veering left and it happened to be about same time I was turning left anyway but slowly became uncontrollable and took a lot of power to keep moving so I shut it down.

Got the airplane on a special tow mechanism, didn't damage wheel pants, etc and got it towed over to maintenance.  There were no flat spots on tire but the mechanic said I had the wrong inner tube and there was a cut in the wheel, not caused by above issue.  Seems curious to me as I have been a lot more aggressive in the past in my mooney and in other airplanes in previous uses.  I have 5000 hours total, 3500 jet and turbo prop so not some green pilot.  Has anybody else seen this?  Or was it something that just happened?  Was an expensive repair as the Cessna mechanics were on overtime charges.... 

[carusoam]

What tube did you have in there?

Some have been known to separate the fill tube from the rest of tube.

Can you inspect what killed the tube?

A more common challenge comes from a fold or pinch of the tube during installation.

All of these issues leave a fingerprint towards what did them in...

PP observation only. Not a mechanic.

Best regards,

-a-

[XXX]

Had that happen to me in a Cardinal. Fortunately I had exited the runway and was taxiing. The mechanic said the inner tube was pinched. Glad you had no severe damage.

[RobertGary1]

What tube was it? They're saying it was the wrong one? Never seen one fail like that  

-Robert

[N6758N]

Sounds like it was a 'combo' tube, one that will fit both a 15x6 tires and a 6x6 tire... They aren't as good because they are more narrow than a standard 6x6 tube which can lead to pinching. 

[StevenL757]

To Mark's question as to what went wrong...hard to say w/o more answers to above questions.  A cut in the right place on a wheel could be an issue, but pinching a tube seems like the most plausible explanation, and I've heard it happen more than a few times on several types.

I'm assuming by "wheel pants" you mean your internal and external gear doors...so as long as either door or your strut were not bent or impacted, go home, say 20 Hail Marys, buy the proper tube next time, and be grateful your bill was simply for O/T work instead of a couple thousand bucks for new gear doors.

[kortopates]

As Steven said, it's very fortunate you didn't damage gear doors or worse. But personally, I don't think I would have put the wheel back on without at least a dye penetrant exam but I am not sure what Parker calls for in such a situation. You could still follow up with them to see what they recommend.
Otherwise flats happen, but luckily they are very rare in aviation.


Sent from my iPhone using Tapatalk

[Yetti]

You kind of need to do forensics on the tube.   A pinch is visible with marks on the tube.  An underinflation will show up on the stem.  A pinch flat will show fang marks.

You get pretty good at it when riding bikes

 

[Oldguy]

Only time I have experienced something like this was in a friends Commander 114. Turned out the tire was under-inflated and rolled when landing. Exciting rodeo ride, but he got it off to the side of the runway.

[SantosDumont]

Had a tire go flat on me on a Cessna 175 right as I turned  onto the taxiway to enter the runway for takeoff.  Really glad it happened right then and didn't go flat in the air or that landing would have been exciting. 

[Aviationinfo]

I would find it hard to believe that your braking action caused it.  You should be able to stop hard without this kind of damage. 

[RLCarter]

Not sure why you think you did something wrong. You mention it had the wrong tube, who installed the wrong one? Why was it wrong.....size, valve stem, both? Pinched tubes generally show up as soon as you try to air it up. I assume the cut is in the tire and not the wheel. Tubes hold air, flat tires come off wheels, my guess is you had an old fashion flat... Walk around on ramps, taxi ways and runways, you'll be amazed at all the hardware and crap the fall off airplanes, I have found 2 dipsticks and a bunch of hardware, a buddy recently found a tail wheel assembly complete with yoke.

[N201MKTurbo]

I always use talc on my tubes. Without it you sometimes get folds in the tube when you air it up. I also slightly air up the tube before assembling the wheel halves. This makes it almost impossible to pinch the tube between the wheel halves. I also pressurize the tire to full pressure then let it all out so the tube finds its happy place.

http://www.aircraftspruce.com/catalog/lgpages/tiretalc.php

And I checked the European site, they don't have Tyre Talc, just Tire Talc.

[Mark89114]

I was just curious if there were any thoughts.  No flat spots on tires, pressure was OK, checked it in recent history, looked round during preflight, etc.  I applied the brakes a little more aggressively than usual and in hindsight the airplane slowly started to drag left and eventually gave up rolling at all.  The words the mechanic used where "the tube is the wrong profile for that tire", and there was a tiny cut on the tube only, nothing penetrating the tire.  He didn't think the cut was caused during the rolling on rim stage. 

I don't know who installed the wrong one, I have had airplane for two years and the tires were original. 

No harm no foul, except my wallet, paying for overtime repair wages.....

 

[thinwing]

On 3/29/2017 at 0:07 PM, Mark89114 said:

I recently landed at KRVS and made an acceptable approach and landing in busy traffic, so I was a little more aggressive on brakes, but no tire screaching, flat spots, etc.  As plane was slowing started veering left and it happened to be about same time I was turning left anyway but slowly became uncontrollable and took a lot of power to keep moving so I shut it down.

Got the airplane on a special tow mechanism, didn't damage wheel pants, etc and got it towed over to maintenance.  There were no flat spots on tire but the mechanic said I had the wrong inner tube and there was a cut in the wheel, not caused by above issue.  Seems curious to me as I have been a lot more aggressive in the past in my mooney and in other airplanes in previous uses.  I have 5000 hours total, 3500 jet and turbo prop so not some green pilot.  Has anybody else seen this?  Or was it something that just happened?  Was an expensive repair as the Cessna mechanics were on overtime charges.... 

Pinched tube!