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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