last year, 2011 at the last day of the Hamburg jet rally, I was decided to fly my Skymasters L-39 as I spent the other 3 days burning 10 gallons in my Boomer XL.

Just after take off I was making a right turn, she acted weird for just a quick second, the aileronbanked the L-39 hard over on the right, I gaveleft aileroncommand and she came back, a second later she rolled over to the right again, again left aileron stick and she responded and leveld out again, then she rolled a third time. All 3 times were right aileron movement. I yelled "Mayday" turned sharp right and brought it in without any damage.

all this happened with in a few seconds as I only made 1/2 lap around the circuit. And during this I had full control on the L-39, even though she still wanted to roll. When she did roll the 3 times, it wasn't like the control surfaces were out of trim, but were like I gave hard right stick.

landed and brought the jet back to the pitt area. I checked every connection, range checked it 3 or 4 times. I plugged the data logger in and thats when I found my problem. After logger was in, I did 3 more range checks. Radio is JR2.4 9303. so after I did the walk with finger on the button, I checked the data logger, got the usual reading on most of the remote receivers, but one read "999"...... there it was, I had a bad remote receiver (satalite) The receiver I believe was a R922. but after this mishap I changed the entire receiver set up and I went with a different one, I think it's the R1222X, and No more problems ..

Mark