ZerotoQuad

Draft references — under review

Pre-flight and crash-debrief references

These untimed reminders accompany the full chapters; they do not replace first-flight or return-to-service validation. The corrected draft text is shown below. Exact-equipment and physical-print checks remain open.

Print release on hold. The revised drafts use two-sided A6 layouts to preserve the full safeguards. Screen layout and automated checks are not physical-print or practical approval. Do not use earlier PDFs as current instructions.

Check download status

The pre-flight check

Session reminder, not first-use or return-to-service sign-off. Complete untimed props-off acceptance before fitting props. Clear Chapter 8's outdoor airspace, site, people, observer and applicable Remote ID checks. Apply Chapter 4/14's condition-first battery response before handling. Any uncertainty means no flight.

Pre-flight — do not rush

  1. Fastener conditionAfter permitted all-supply isolation and stored-energy precautions, use exact inspection/retention criteria; looseness needs investigation.
  2. PropsNo chips, cracks or hub damage.
  3. AntennasInspect fitted assemblies by their permitted methods; no generic tug or reseat.
  4. Pack voltageStandard LiPo: 4.20 V per cell at full charge. Follow the pack label.
  5. ArmingNormal arm/disarm already verified props-off; tones and clear warnings alone are not proof.
  6. GPS fixWhere Rescue is configured, meet accepted fix/home/startup checks; satellite count alone is not readiness.
  7. FailsafeQualified radio-loss test before any first flight or relevant repair/change; not a Motors-tab test.

No arm? Keep ARM off

Use Chapter 14's qualified props-off App/CLI diagnostic state. Record exact release and display; App labels differ. Missing or cleared OSD text is neither a diagnosis nor flight clearance. Do not arm to obtain text.

THROTTLE
Normal non-3D throttle fully LOW; roll/pitch/yaw centred. Check channel setup, do not bypass the flag.
ANGLE
FC reports excessive tilt. Keep ARM off; check orientation and alignment, not just physical level.
ARM_SWITCH
Leave ARM off; investigate other flags and verify the safe state before a deliberate arm.
RXLOSS
No valid FC receiver data. Check model, link, power and interface; do not assume rebinding is the fix.
GPS
Configured GPS condition unmet. Check the accepted setup and actual readiness; do not disable or bypass protections.
MSP
An MSP client inhibits normal arming. End bench work safely; do not bypass this safeguard.

Field rules

  1. Props OFF for every bench test.
  2. Agree the RF plan and permission before power-up. Pit mode does not guarantee no interference.
  3. Active or uncertain battery failure (abnormal heat, hissing, venting, smoke or fire)? No approach, handling, unplugging or bagging. People away, avoid fumes; call emergency services from safety. Other suspect pack? Stop use; seek manufacturer/local hazardous-waste advice before handling or transport.

Zero to Quad · Chapter 14

The crash debrief

Five coaching questions after a safe response. Choose one practice comparison, but complete every necessary safety correction.

After the crash — five questions

Radio disarm; assess from a safe distance. Active battery failure (abnormal heat, hissing, venting, smoke or fire), or uncertain? No approach, handling, unplugging or bagging. People away, avoid fumes, call emergency services from safety; do not re-enter. Suspect pack without active signs? No further use; seek manufacturer or hazardous-waste handling advice before disconnecting, moving, packaging or transport. Only a safe, non-suspect scene permits qualified recovery. Safely isolate battery, USB and independent supplies; props off before inspection or hands-on work. Then ask:

  1. What did I intend to do?
  2. What happened?
  3. What did I see or notice just before the event?
  4. What, if anything, would I change about my stick input?
  5. What, if anything, would I change about my next setup?

Output: Choose one practice comparison; complete every safety correction. Resolve cause and damage, use supported repairs, repeat affected props-off acceptance in the final configuration, then the full before-flight gate before conservative return and post-flight inspection. Unresolved means no flight; another pack is optional.

Three coaching reminders

  • ControlSmooth, small stick inputs
  • AwarenessBattery, link, space, obstacles
  • RecoveryCheck safety before retrieval or return to flight

Use control, awareness and safe recovery as a practice reminder, not a guarantee of progress or permission for another flight. Label actual incident, near miss, simulator or tabletop. Separate observations from assumptions; unknown, not supplied, and genuinely not applicable (with a reason) are valid. Do not manufacture a crash.

Zero to Quad · Chapter 8