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Avionics Work on my NXCub

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lrobichaux

FI Supporter
Joined
Apr 20, 2025
Posts
48
Type aircraft owned
SR-22T G6 and CubCrafters NXCub
Base airport
KADS
Ratings
PPL, IR, tailwheel endorsement
Update to a previous post that I was considering some avionics upgrades after my avionics CB switch failed. Here is what I had done, and the results:

1) upgraded the avionics bus CB switch from 10A to 15A (shop determined that the existing wiring was sufficient to handle the amperage increase)
2) added a second dedicated back-up avionics power circuit with its own 15A CB switch (in case there's an in-flight CB switch failure like I experienced a couple of months ago)
3) installed a COM1 interlock tie-in as prescribed by CubCrafters to address static in my headset when transmitting and also monitoring both COM1 and COM2
4) upgraded the right ignition IBBS from a 3 amp-hour battery to a 6 amp-hour battery

Tech Aero based at KDTO did a fantastic job. Everything works as desired.

If anyone wants information on #3 above, reach out to Pete or I'm happy to provide information. More importantly, if anyone can make good use of a nearly-brand-new 3 amp-hour IBBS battery, first one to respond in the affirmative below I'll gladly package it up and send to you - no cost. I just want someone to get some use from it, as it's just gonna otherwise sit in my hangar and eventually become unserviceable. It's a TCW IBBS-12V-3AH for experimental installs. Does not have the install harness as that was needed for my upgraded battery.
 

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