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  #1  
Old 05-23-2021, 06:52 AM
rkiefer2 rkiefer2 is offline
 
Join Date: May 2015
Location: Waukesha, WI
Posts: 80
Default Flightcom 403 - Intermittent Side Tone

I have an Flightcom 403 in my RV12 that I recently bought.

PROBLEMS:
1. I noticed that it recently started cutting in and out with pilot/passenger are talking back and forth.
2. I get allot of feedback through the headsets. If i turn squelch down it goes away, but then intercom communications are inoperative.

I have my CFI checkride coming up soon and not time to upgrade the intercom.

Wheres a good place to start trouble shooting?
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Roger Kiefer II
EAA Chapter 18 Member
EAA HBP/HBC Volunteer
Wisconsin Fox River Flyer Club Member
Waukesha, WI (KUES)

Last edited by rkiefer2 : 05-23-2021 at 06:59 AM.
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  #2  
Old 05-23-2021, 08:10 AM
12vaitor 12vaitor is offline
 
Join Date: Aug 2012
Location: Panama City, FL
Posts: 181
Default

I just cured a problem with intermittent co-pilot comms that turned out to be a loose mic jack where the jack barrel was contacting the airframe. Centered the jack on the shoulder washer and tightened the nut to restore the isolation of the fiber washers provide and it works fine.

You can also check the intercom troubleshooting section of the Flightcom 403 manual for some other ideas on headset and mic level adjustments.

https://act.soneticscorp.com/acton/a...ser-manual.pdf

John Salak
RV-12 N896HS
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  #3  
Old 05-23-2021, 08:14 AM
fl-mike's Avatar
fl-mike fl-mike is offline
 
Join Date: Jul 2005
Posts: 1,553
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What headsets are you using (both)?
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Mike W
Venice, FL
RV-6A. Mattituck TMX O-360, FP, GRT Sport EFIS, L3 Lynx NGT-9000
N164WM
N184WM reserved (RV-8)....finishing kit in progress. Titan IOX-370
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  #4  
Old 05-23-2021, 11:03 AM
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Piper J3 Piper J3 is offline
 
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 2,468
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I had an unrelated issue with a 403 Flightcom about five years ago. There is a power transistor with a heatsink bolted to the inside of the case. The bolt came loose and was bouncing around on the circuit board intermittently shorting everything out.

I mentioned to Flightcom and never heard anything back from them...
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Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 690

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #5  
Old 05-23-2021, 03:33 PM
rkiefer2 rkiefer2 is offline
 
Join Date: May 2015
Location: Waukesha, WI
Posts: 80
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Quote:
Originally Posted by fl-mike View Post
What headsets are you using (both)?
Happens with both Bose A20 and Light Speed Zulu
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Roger Kiefer II
EAA Chapter 18 Member
EAA HBP/HBC Volunteer
Wisconsin Fox River Flyer Club Member
Waukesha, WI (KUES)
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