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Wednesday, September 6, 2017

Installed sub-panel avionics and worked on wiring: 4 hours


  • Installed EFII engine computers using some cap head screws I ordered from Aircraft Spruce. The units are stacked so I added a washer in between the two to allow for a little airflow. I'm just using these units for ignition but they are also capable of electronic fuel injection if I want to upgrade down the road.
  • Installed the following components: EFII manifold pressure sensors, GEA-24 Garmin engine interface module (EGT, CHT, fuel flow, pressures, etc), GAD-29 Garmin arinc 429 interface (let's the GTN-650 navigator talk to the G3X Touch system), and the GMA-245R Garmin remote audio panel.
  • Fabricated a standoff for the right co-pilot brake reservoir line.
  • Primed and installed standoff and adel clamp for brake line
  • Installed VPX pro
  • Started working on wire / tube routing. I ran the pitot, static and aoa pneumatic lines up to the adahrs. I also ran the adsb antenna coax and the right headset wiring up to the sub-panel.


Pitot, aoa, static lines coming out the left side of the sub-panel, on the right is the right headset wiring and the adsb coax. (The GTN-650 tray is temporarily there to check wire clearance.)

VPX Pro now has plenty of clearance:

Standoff with brake line in adel clamp:

Standoff ready to install:

Sub-panel progress (left silver box is GMA-245R remote audio panel, right silver box is GAD-29 arinc interface):

Small black boxes are manifold pressure sensors, silver box is GEA-24 engine interface:

Dual EFII engine computers installed: