AOA malfunction?

[DonMuncy]

I have a (what I think now must be an older) Alpha AOA system. It was installed in 2014. It has a partial circle of small round lights, with green lights on the bottom, a single blue light on the 90 degree position, a couple of yellows at about 60 to 80 degrees and reds over the top. (PN DSTR-AOA-2000RE) It is calibrated so the blue light illuminates at 1.3 vso, and buffet begins when the second red lights up.

I have been extremely pleased with it, but yesterday approaching to land, all of the reds (and possibly all the others) began flashing. It was awfully gusty and I was busy trying to get one the ground gracefully, so I do not have a good description of what was taking place.

The Alpha web site doesn't seem to acknowledge such a unit exists, and I have not called them nor consulted with my avionics guru yet.

Anyone seen this, or have any idea what is going on?

 

[carusoam]

Don,

Sounds like...  as you are slowing to approach speeds, the AOAi is starting to register further up the scale.... and then bumping around in turbulence...the AOA may actually be bumping into the red zone... momentarily.

How bumpy was it?

Alpha site has a few models...

http://www.alphasystemsaoa.com/

Best regards,

-a-

[DonMuncy]

Thanks Anthony. I looked at their site and they don't show mine anymore. It was a little bumpy, but not godawful. I could have understood, if the lights were jumping from one to the other, but these were all blinking at the same time. I think it must be a problem in the system somewhere.