Build Log for Sonex 0849B
Date: 09/23/2026 N-Number: N830EH Airport: 7WI5 Altimeter: 30.40 Test Conductor: Evan Krueger Observer: Hannah Silber Start Time: 09:58 Off Time: 10:06 On Time: 10:17 End Time: 10:18 Block Time: 0.3 Flight Time: 0.2 T/O Weight: 1,026 T/O CG: 66.40 Takeoff…
The Preparation The airworthiness inspection process actually began several months before the actual inspection took place. I started the process by reaching out to the Designated Airworthiness Representative (DAR) I wanted to use via email. My search for a DAR…
Conducted flight test card C and D along with high speed taxi test to verify AeroInjector tuning and ability for engine to generate static RPM. After letting engine parameters stabilize, recorded data for test card C and testing mixture, fuel…
Date: 08/27/2026 N-Number: N830EH Start Time: 10:12 Location: 7WI5 Test Conductor: Evan Krueger Observer: Fuel Quantity: 5.2 gallons Procedures: Results: Setup and Ground Testing System Ground Test Calibrate and Test Servos IAW Dynon SkyView Manual ✔ Control Stick Disconnect Push-Buttons…
Date: 08/27/2026 N-Number: N830EH Start Time: 10:32 End Time: 11:16 Pilot: Hannah Silber Observer: Evan Krueger Airport: Syvrud (7WI5) Weight/CG: 942 lbs / 66.2 inches Configuration: Cowl On Fuel: At least 20 minutes Observer: With fire extinguishers Procedures: Results: Stabilized…
Began plumbing the smoke fluid tank by creating a component mount out of scrap aluminum angle and bolting it to the smoke tank handle that way no tank penetrations needed to be made. Mounted the fluid pump, solenoid valve, and…
Completed weighing process for initial weight and balance of aircraft. Started by leveling aircraft with tail wheel stand and aligning aircraft to floor squares. Ran tape measure along centerline of the aircraft and dropped plumb bob from spinner to set…
Made preparations for weighing aircraft by draining fuel from fuel tank. Cut small ramps out of 1″ x 8″ wood on a 45 degree angle; thickness should allow for aircraft main tires to roll right onto scales without tipping them…
Reinstalled newly painted lower cowling then reinstalled exhaust pipes. Used exhaust spring hooks through the lower exhaust tunnels to reattach exhaust springs which worked pretty good. Remade preheat and battery charger plug mount out of scrap aluminum to better align…
Ran engine after installing #2.5 AeroInjector needle and re-tapping threads in needle carrier. Got much better results with EGT spread between full rich EGT and peak stumbling coming in around 120 degrees. Engine parameters seemed much more consistent and stabilized…
Cleaned wing root surfaces and wing walk doubler. Cut wing walk skateboard grip to size then applied pieces to wing walk area. Applied wing gap seal tape to both wing/fuselage joints. Wing section now complete! Hours Worked: 0.37
Applied N-number decals to both sides of fuselage by taping decal sets to sides and “hinging” decals on top with blue painters tape. Right side worked better to prevent bubbles by cutting numbers and letters apart after taping the entire…