hi there
my AOA has a "quick drain" in the lower portion of the sensor (reached from under the wing).. i just push up on it from the bottom and if there is any water it is drained out
i would be afraid to put compressed air to the port as the instrument is sensing very small differential pressures
peter
> From: N4ZQ@VERIZON.NET
> Date: Sun, 10 Nov 2013 22:25:45 -0500
> To: lml@lancaironline.net
> Subject: [LML] Re: AOA issue
>
> Flew down to Hyannis on Friday afternoon and I was a very unhappy AOA camper. During the 20 min flight, the AOA Pro display became quite dim,
> and I was seeing numbers on the bottom that were fluctuating between 150 and 200 in level flight. I pulled the breaker and reset and got
> E11 and E33 for error messages. I never see these error messages on power up. Later in the flight, the display appeared to be functioning normally again.
> Back in the hangar, I checked the upper port drain valve and got about a 1/4tsp of water. The 1hr test flight this afternoon showed the AOA to be functioning
> normally again. Hard to imagine that small amount of water could be the culprit though. I'm thinking now that I should disconnect the upper/lower
> pressure port lines and apply a bit of compressed air to be certain they are free of any moisture.
>
> Angier Ames
> N4ZQ
>
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