Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml@lancaironline.net
Date: Tue, 01 Jun 2004 07:59:20 -0400
Message-ID: <redirect-98893@logan.com>
From: bob mackey <nospam@pure-flight.com>
Subject: Re: lnc2 flaps
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Dan Schaefer wrote:
> Early on, I had some trouble with the actuator getting beyond the up-limit
> switch allowing the motor to drive the to the mechanical stops, resulting in
> the mechanism jamming in the reflex position.

Another possible failure in the 235 flap system has similar symptoms.
In the 235, the actuator is in the center console, and drives a
toque tube behind the base of the seats. The torque tube is linked to the
two flaps by short pushrods on each side. If the pushrods are too short,
it is possible to get the flaps into an "over-center" position.
If this happens on one side, an assymetric flap deployment can result.
The solution is to lengthen the pushrods (1/4" should suffice) and then
adjust the actuator stops to bring the range of motion back to spec.

- bob mackey
  flying a 235 / building a 320
  103MD -at- pure-flight.com