Chief - Have you seen this bulletin on the DX-7 ? If you went into fail safe, I am sure you would not have had the aileron's set which would cause a roll like that.

OverviewSpecificationsMultimediaSupportProductsRev iewsDX7 7Ch Air w/AR7000 & 4-DS821 MD2
Bulletins
DX7 ModelMatch Bulletin
Recently Horizon Hobby Service Department discovered a software issue in DX7 transmitters with HA002J, HR003J, HR004J, HR005J, HR006J, HR007J, HR008J or HR009J Product IDs (PIDs) and FCC ID: BRWDAMTX11.


The issue Service Center discovered affects ModelMatch for models 11–20 when binding and saving new models into memory.

Horizon Hobby has a software update to correct this issue. This software update can only be performed by Horizon Hobby’s Service Department authorized Technicians.

If your DX7 has one of the following PIDs: HR003J, HR004J, HR005J, HR006J, HR007J, HR008J or HR009J and FCC ID BRWDAMTX11.

Click here to complete the Spektrum DX7 Return Request form.
You may also e-mail the Horizon Hobby Product Support team. Please type “DX7 Return Request Form” in the subject line. Please include your shipping address, daytime phone number, and the date code from your Spektrum DX7 transmitter. Click here to e-mail product support.
Horizon will pay for all ground shipping.
If you have further questions, please call Horizon Hobby Product Support at 877-504-0233.
Consumers outside the US and Canada should contact their local retailer or distributor. A list of International distributors may be found at: www.horizonhobby.com/StoreLocator.
As with all RC aircraft, please check your transmitter and equipment prior to each flight.
Horizon Hobby and the Spektrum team apologize for this inconvenience.