# Pre/Post-flight Checklist - Hybrid Module

## Pre-flight Checklist

<table data-header-hidden><thead><tr><th width="471.3333333333333"></th><th width="173"></th><th></th></tr></thead><tbody><tr><td><strong>Procedures</strong></td><td><strong>Action</strong></td><td> <strong>Check</strong></td></tr><tr><td>Inspect landing gear and each boom</td><td>Verify</td><td> </td></tr><tr><td>Landing gear secured and safety pin installed</td><td>Secure</td><td> </td></tr><tr><td>All four arm knobs fully threaded and latched</td><td>Secure</td><td> </td></tr><tr><td>Inspect all four propellers</td><td>Verify</td><td> </td></tr><tr><td>Inspect all four motors</td><td>Verify</td><td> </td></tr><tr><td>Inspect Hybrid Module mounting. Make sure everything is secure and latched</td><td>Verify &#x26; Secure</td><td> </td></tr><tr><td>Add desired fuel to the Hybrid Module</td><td>Fill Tank</td><td> </td></tr><tr><td>Bleed air from fuel lines (if necessary)</td><td>Bleed Procedure</td><td> </td></tr><tr><td>If carrying a payload, make sure it is secure and the CG is as close to the center of the X55 as possible</td><td>Secure &#x26; Verify</td><td> </td></tr><tr><td>Inspect the antenna, GPS, and other electronics, make sure they are secure</td><td>Verify</td><td> </td></tr><tr><td>Turn on the radio controller</td><td>Power On</td><td> </td></tr><tr><td>Plug in the main power cable between the Hybrid Module and the X55</td><td>Plug In</td><td> </td></tr><tr><td>Verify the Charge Bypass Switch is in the down position (off)</td><td>Verify</td><td> </td></tr><tr><td>Plug in the On/Off Key to the Hybrid Module</td><td>Plug In</td><td> </td></tr><tr><td>Allow the X55 to initialize for 15 seconds</td><td>Wait</td><td> </td></tr><tr><td>Move the Charge Bypass Switch to the middle position (on)</td><td>Toggle Switch</td><td> </td></tr><tr><td>Start the engine with the starter</td><td>Start</td><td> </td></tr><tr><td>Allow the engine to idle for at least 1 minute - make sure there are no leaks</td><td>Wait and Verify</td><td> </td></tr><tr><td>Check the fuel level of the Hybrid Module reported on the GCS - compare with actual level</td><td>Verify</td><td> </td></tr><tr><td>Check system voltage (>= 49V) - charge the batteries (Charge Bypass Switch) if not</td><td>Verify/Charge</td><td> </td></tr><tr><td>Check the radio controller battery level</td><td>Verify</td><td> </td></tr><tr><td>Check GCS antenna and battery level</td><td>Verify</td><td> </td></tr><tr><td>Check that the engine is running smoothly</td><td>Verify</td><td> </td></tr><tr><td>Check failsafe settings for correctness</td><td>Verify</td><td> </td></tr><tr><td>Check radio controller button and switches</td><td>Verify</td><td> </td></tr><tr><td>Verify no flight warnings and good GPS fix</td><td>Verify</td><td> </td></tr><tr><td>Propellers clear to spin</td><td>Verify</td><td> </td></tr><tr><td>Press and hold the arm switch for 2 seconds</td><td>Arming</td><td> </td></tr></tbody></table>

## Pre-mission Checklist

<table data-header-hidden><thead><tr><th width="470"></th><th width="173.33333333333331"></th><th></th></tr></thead><tbody><tr><td><strong>Procedures</strong></td><td><strong>Action</strong></td><td> <strong>Check</strong></td></tr><tr><td>Select Altitude Hold or Loiter Mode</td><td>Select</td><td> </td></tr><tr><td>Arm the system and takeoff, but stay 1-2 meters above the ground</td><td>Takeoff</td><td> </td></tr><tr><td>Check small roll, pitch, and yaw movements for proper response</td><td>Verify</td><td> </td></tr><tr><td>Allow the system to hover for at least 30 seconds</td><td>Wait</td><td> </td></tr><tr><td><p>Check GCS data for:<br>Current &#x3C;= 52A<br>Voltage >= 49V<br>Fuel percentage matches the tank level</p><p>No errors or warnings are active</p></td><td>Verify</td><td> </td></tr></tbody></table>

## Post-flight Checklist

| Procedures                                                                            | Action | Check |
| ------------------------------------------------------------------------------------- | ------ | ----- |
| Inspect all motors for any signs of damage, grinding, debris                          | Verify |       |
| Inspect all propellers for any signs of damage or play                                | Verify |       |
| <p>Inspect all boom for any signs of damage/play</p><p> </p>                          | Verify |       |
| <p>Inspect landing gear for any damage or cracks</p><p> </p>                          | Verify |       |
| Inspect engine, exhaust, and wiring for signs of leaks, damage, or broken connections | Verify |       |