Hi! Prior to getting the Europa position markings for the flap there was no
way of positioning the electrically operated flaps accurately, hence the Mac
potentiometer deck to an LED alongside the trim LED. It helps keep "eyes
forward" on climb out anyway. Since then the wing/flap markings became
available. However if the LED is fitted it's supposed to work.
Regards
Bob Harrison G-PTAG
-----Original Message-----
From: forum-owner@europaclub.org.uk
Subject: Re: Flap Position Indicator Problem ! Help
required.
I must be missing something here. Why is there a need for a flap position
indicator? Why not just look out the window at the flap position?
Garry V. Stout
District Manager, AT&T Business Services
Phone: 813-878-3929 Fax 813-878-5651
*****Please note new e-mail address******
-----Original Message-----
Subject: Flap Position Indicator Problem ! Help
required.
Hi! Instrumentation /Electrical experts.
I have a Mac Position Indicator attached to my flaps with red, green and
blue wires connected to an LED Indicator separately circuited and fused
---From the flap drive motor.
It has worked flawlessly for 18 months until last week when I needed to
access the rear of the panel to fix an auxillary socket for a hand held
Garmin 295. Obviously there is no relationship between the two but since
then the LED flap indicator stays at 0 deg. I checked out my connectors
where I had been working and found the blue LED wire broken.
Having now repaired the connection it, the LED, stays on 0 deg irrespective
where the flaps are positioned.
I have taken some resistance readings near to the MAC deck as follows: -
With Flaps 30deg :- blue wire to orange 4.86 ohms
(down) blue wire to green 15.00 ohms
green Wire to orange 4.86 ohms
With Flaps 25deg :- blue wire to orange 4.85 ohms
blue wire to green 613 ohms
green wire to orange 4.27 ohms
with Flaps 15deg :- blue wire to orange 4.86 ohms
blue wire to green 1587 ohms
green wire to orange 3.29 ohms
With Flaps 7deg :- blue wire to orange 4.84 ohms
blue wire to green 2891 ohms
green wire to orange 2018 ohms
with Flaps 0 deg:- blue wire to orange 4.84 ohms
(up) blue wire to green 4.80 ohms
green wire to orange 52.5 ohms
Can anyone deduce from the readings where I should look to reactivate the
LED to match the
actual flap position?
Your urgent consideration of this would be gratefully received since in
seven days time I'm joining a group on a France Fly round and would like to
get it fixed ASAP.
BTW the Trim LED alongside is working AOK.
Regards
Bob Harrison G-PTAG.
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