Record the exact error
Note the aircraft, controller, firmware and message. Keep full registration numbers and private characters out of shared screenshots.
Check the official setup steps
Compare the manufacturer’s procedure with your settings. Check the required registration format and available firmware updates.
Check what you are testing
A receiver or public map can only show signals it receives. Confirm compatibility and local coverage before drawing conclusions.
If a required identification system is not functioning correctly, resolve it before flying. Seek model-specific support from the manufacturer; ask the CAA about registration or regulatory questions.
Sources & review.
Official guidance behind this answer
- CAA: pre-flight responsibilities
- CAA: maintenance and manufacturer instructions
- Layer400: reception and coverage limitations
Source review: 26 October 2026. Our practical checklists are editorial aids. Check the current source and your operation’s conditions before making a flying decision.