| 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:
- Perform throttle and mixture control checks
- Start engine and verify oil pressure
- Verify brakes hold aircraft
- Record engine instruments when stabilized
- Record idle speed
- At idle, reduce mixture very slowly and record rise in rpm (approximately 50 for most engines)
- Verify brakes work properly
- Taxi aircraft straight and make left and right turns. Note tracking, understeer/oversteer, and turn radius with and without brakes
- Wear brakes in according to manufacturer’s recommendation
- Shutdown aircraft using normal method.
- Restart aircraft and shutdown using magnetos
- Restart aircraft and shutdown using fuel valve
Results:
Stabilized Engine Readings
| #1 | #2 | #3 | #4 | #5 | #6 | |
| CHT | 232°F | 289°F | 304°F | 333°F | 334°F | 291°F |
| EGT | 983°F | 1191°F | 1141°F | 1185°F | 1184°F | 1141°F |
Comments: Engine warmed up for 15 minutes then idled at 1,500 rpm before taking readings
| Oil Pressure: 38 psi Oil Temp: 149°F Volts: 13.3V Amps: 0.7A Fuel Flow: 2.7 GPH | Engine Idle: 800 rpm (set screw may need further adjustment Idle Mixture: Peak rpm and rise occurs when mixture is pulled out approximately ¾ of the way RPM Rise: 80 rpm |
Taxi Testing
| Maneuver | Satisfactory |
| Taxi Straight | ✔ |
| Left Turns | ✔ |
| Right Turns | ✔ |
| Taxi Without Brakes | ✔ |
| Brake Wear-in | ✔ |
Shutdown Method Testing
| Shutdown Method | Engine Kill Time |
| Normal (Mixture Cutoff) | 1 – 2 Seconds |
| Alternate (Ignition Key Off) | Immediate |
| Emergency (Fuel Shutoff Valve Closed) | 11 Seconds |
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