[martinic]

Horizon (aka Spektrum) has issued a programming bulleting for the AR6100 receiver to address a potential range issue. The bulletin can be found here.

There is a discussion of the issue on RCG. The information related to the firmware issue is towards the end of the thread - around here.

Details of the Horizon bulletin:

AR6100 Reprogramming Bulletin

Horizon Hobby takes your modeling satisfaction very seriously. Although there are thousands of AR6100 receivers on the market being used with great success, a small number of customers have reported un-commanded elevator outputs during flight.

After extensive testing, our Spektrum engineers have duplicated the problem. This issue only occurs under very unusual and specific circumstances and does not affect the general performance of the product. Our team has implemented a programming change on all future productions eliminating this issue altogether.

If you wish to return your receiver(s) to our Service Center for re-programming, please complete the attached Return Form. This is a free service.

If you have any questions, please contact our Product Support Team at 1-877-504-0233, Monday through Friday, 8am to 7pm CST.

We appreciate your support of Spektrum and apologize for any inconvenience this causes.