N551X
Built 2021 · registered US
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Flight activity
(1 tracking legs recorded)- Last 30 days
- 1
- Last 90 days
- 1
- Last seen
- 22 Oct 2026
- Tracked since
- 22 Oct 2026
Frequent routes: KATW → KATW (1)
- KATW → KATW22 Oct 2026 · 0h 34m
From ADS-B observations collected since May 2026. Coverage depends on ground-receiver density; gaps do not mean the aircraft did not fly.
Common. More common than 75% of the aircraft models we track.
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Registration history
(1)- N551XUSACTIVEHELM THOMAS N2020 – present
Owner names are published by the issuing civil registry (FAA / CCARCS / CASA / ANAC / NZ CAA). Owner addresses present in the source are not republished here. Registered owner? Request removal
What aircraft model is N551X?
N551X is a Sonex ONEX, built in 2021. Sprinkle's record for N551X covers its lineage, ownership history and specifications.
Is N551X currently active?
Registry records list N551X's status as Active, registered in United States — a Sonex ONEX.
What is the manufacturer serial number (MSN) of N551X?
N551X carries manufacturer serial number (MSN) ONX0137, the serial assigned to this Sonex ONEX airframe when it was built.
What is the ICAO24 / Mode S code for N551X?
N551X's ICAO24 (Mode S) transponder code is A7052F — the hex address the Mode S transponder on this Sonex ONEX broadcasts.