Registry / Sidney P Essex Sr / SONEX ONEX / N503X

Own N503X?

Claim ownership to earn the Verified Owner badge on your reviews and to reply to other pilots' feedback.

+ Submit ownership claim →

We won't display your email publicly.

Helpful: bill of sale, registration certificate, insurance dec page. Names are auto-matched too — many claims auto-verify without a document.

Claims auto-verify when your name matches the FAA registrant. Otherwise an admin reviews — usually within 1 business day.

N503X V

Sidney P Essex Sr SONEX ONEX

FAA Registry ↗ FlightAware ↗ FlightRadar24 ↗ ADS-B Globe ↗

Pilot & Owner Reviews

Be the first to share what you know about N503X.

Share your experience with N503X

Help other pilots, buyers and curious aviators. Reviews appear after a quick admin check.

+ Add detailed ratings (optional)
About your time with N503X (specific to this airplane — helps other pilots)
Would you fly this airplane again?
Recommended for (pick any)

20–2,000 characters

We won't display your email publicly.

No reviews yet — be the first.

Pilot & Owner Reviews

Own N503X? Claim ownership to earn the Verified Owner badge on your reviews and to reply to other pilots' feedback.

Flight history & live tracking

ICAO24: a64722
Track N503X on external services
FlightAware FlightRadar24 ADS-B Exchange Globe ADS-B.lol Globe FAA Registry
No flight data on file yet for N503X.
Queries adsb.lol — works only if N503X is broadcasting ADS-B right now. Daily sweep at 04:43 MST · external trackers above for guaranteed live data.
📸 Upload a photo of N503X

We won't display your email publicly.

Up to 10 photos per aircraft per uploader. Photos appear after admin approval.

Aircraft Type — ACFTREF 05639M2

Sidney P Essex Sr SONEX ONEX
Engines: 1
Type: piston
Seats: 1
Category: Standard
Engine type: Reciprocating (Piston) (code 1)

FAA Registration Record

N-Number: N503X
Serial Number: 0167
Year Manufactured: —
ACFTREF Code: 05639M2
Engine Code: —
Status: V (V)
Certification: —
Type Aircraft: Fixed Wing Single Engine (4)
Type Engine: Reciprocating (Piston) (1)
Source: master
Kit Manufacturer: Sonex Aircraft Llc
Kit Model: ONEX

Transponder / ADS-B

Mode S (octal): 51443442
ICAO 24-bit (hex): A64722
ADS-B Exchange ↗ | FlightAware ↗

Registrant

Essex Sidney P Sr
2049 E Desert Greens Dr
Fort Mohave, AZ, 864268870
FAA Region: 4

Key Dates

Certificate Issued Oct 5, 2020
Expiration Oct 31, 2027
Last Activity Mar 24, 2023
Data as of Jun 8, 2026

Calculate Performance

Calculate density altitude, takeoff roll, and climb performance for a Sidney P Essex Sr SONEX ONEX at any airport.

Airport Performance Calculator

Pre-filled with SONEX ONEX performance data

Need to ferry this aircraft?

FerryFlight connects you with experienced ferry pilots for domestic and international delivery flights.

Get a Quote