# Appendix

- [FAA Registration & Remote ID (US customers only)](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/faa-registration-and-remote-id-us-customers-only.md)
- [Precautions and Best Practices](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/precautions-and-best-practices.md)
- [Pre/Post-flight Checklist](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/pre-post-flight-checklist.md)
- [Technical Dimensions](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/technical-dimensions.md)
- [Performance Specifications](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/performance-specifications.md)
- [Electrical Interfaces](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/electrical-interfaces.md)
- [Removing/Replacing Propellers](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/removing-replacing-propellers.md)
- [Download Offline Maps via QGC (Herelink Controller)](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/download-offline-maps-via-qgc-herelink-controller.md)
- [Charging Flight Batteries](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/charging-flight-batteries.md)
- [Terrain Following Using SRTM Method](https://arcsky.gitbook.io/x55-public-knowledge-base/appendix/terrain-following-using-srtm-method.md)


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