Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A519EA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N428FX · EMBRAER EMB545 Praetor 500 · operated by FLEXJET LLC, SIZUL AIR LLC, STATESIDE AIR LLC, SWANSON THOR, SCHWAN BUICK GMC CADILLAC INC, BOB TOMES FORD INC

Hex
A519EA
Octal
51214752
Decimal
10,820,074
Country
US
Tail
N428FX
Type
E545
No current signal · last broadcast 14h ago
Flights observed
194
Distinct callsigns
1
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S A519EA.

Country allocation

The ICAO 24-bit address A519EA falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
LXJ428 - 194 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 LXJ428 - Jul 13, 14:20 UTCJul 13, 19:10 UTC4h 50m
2026-07-13 LXJ428 - Jul 13, 12:45 UTCJul 13, 13:00 UTC15m
2026-07-12 LXJ428 - Jul 12, 20:05 UTCJul 12, 20:20 UTC15m
2026-07-12 LXJ428 - Jul 12, 18:35 UTCJul 12, 19:15 UTC40m
2026-07-12 LXJ428 - Jul 12, 15:35 UTCJul 12, 16:25 UTC50m
2026-07-12 LXJ428 - Jul 12, 12:50 UTCJul 12, 14:20 UTC1h 30m
2026-07-06 LXJ428 STL → CLE Jul 6, 22:00 UTCJul 6, 23:10 UTC1h 10m
2026-07-06 LXJ428 LGB → STL Jul 6, 17:55 UTCJul 6, 21:10 UTC3h 15m
2026-07-06 LXJ428 - Jul 6, 15:45 UTCJul 6, 16:30 UTC45m
2026-07-05 LXJ428 COE → LAS Jul 5, 21:10 UTCJul 5, 23:05 UTC1h 55m
2026-07-05 LXJ428 BFI → COE Jul 5, 18:25 UTCJul 5, 19:10 UTC45m
2026-07-05 LXJ428 - Jul 5, 16:35 UTCJul 5, 17:10 UTC35m
2026-07-02 LXJ428 - Jul 2, 23:00 UTCJul 3, 01:00 UTC2h 0m
2026-07-02 LXJ428 - Jul 2, 20:10 UTCJul 2, 21:05 UTC55m
2026-07-02 LXJ428 - Jul 2, 16:15 UTCJul 2, 19:05 UTC2h 50m
2026-07-02 LXJ428 - Jul 2, 14:50 UTCJul 2, 15:00 UTC10m
2026-07-01 LXJ428 - Jul 1, 20:20 UTCJul 1, 23:35 UTC3h 15m
2026-07-01 LXJ428 - Jul 1, 15:45 UTCJul 1, 16:10 UTC25m
2026-07-01 LXJ428 - Jul 1, 13:45 UTCJul 1, 14:15 UTC30m
2026-06-30 LXJ428 - Jun 30, 19:25 UTCJun 30, 23:05 UTC3h 40m
2026-06-30 LXJ428 - Jun 30, 16:55 UTCJun 30, 17:25 UTC30m
2026-06-30 LXJ428 - Jun 30, 12:00 UTCJun 30, 15:15 UTC3h 15m
2026-06-29 LXJ428 - Jun 29, 19:35 UTCJun 29, 20:15 UTC40m
2026-06-28 LXJ428 - Jun 28, 16:09 UTCJun 28, 18:10 UTC2h 0m
2026-06-28 LXJ428 - Jun 28, 14:14 UTCJun 28, 15:05 UTC50m
2026-06-27 LXJ428 - Jun 27, 19:59 UTCJun 27, 20:44 UTC45m
2026-06-27 LXJ428 - Jun 27, 16:04 UTCJun 27, 18:29 UTC2h 25m
2026-06-26 LXJ428 - Jun 26, 21:55 UTCJun 27, 01:24 UTC3h 30m
2026-06-26 LXJ428 - Jun 26, 19:24 UTCJun 26, 20:10 UTC45m
2026-06-26 LXJ428 - Jun 26, 14:15 UTCJun 26, 15:05 UTC50m
2026-06-25 LXJ428 - Jun 25, 23:59 UTCJun 26, 00:50 UTC50m
2026-06-25 LXJ428 - Jun 25, 22:49 UTCJun 25, 23:14 UTC25m
2026-06-25 LXJ428 YYZ → YYZ Jun 25, 22:04 UTCJun 25, 22:10 UTC5m
2026-06-25 LXJ428 - Jun 25, 17:44 UTCJun 25, 20:19 UTC2h 35m
2026-06-25 LXJ428 PDK → SUA Jun 25, 15:10 UTCJun 25, 16:29 UTC1h 20m
2026-06-25 LXJ428 - Jun 25, 00:40 UTCJun 25, 02:35 UTC1h 55m
2026-06-24 LXJ428 - Jun 24, 21:34 UTCJun 24, 22:00 UTC25m
2026-06-24 LXJ428 - Jun 24, 16:09 UTCJun 24, 19:15 UTC3h 5m
2026-06-23 LXJ428 - Jun 23, 17:50 UTCJun 23, 18:25 UTC35m
2026-06-23 LXJ428 - Jun 23, 13:05 UTCJun 23, 16:39 UTC3h 35m
2026-06-22 LXJ428 - Jun 22, 21:05 UTCJun 22, 21:19 UTC15m
2026-06-22 LXJ428 - Jun 22, 16:54 UTCJun 22, 20:10 UTC3h 15m
2026-06-22 LXJ428 - Jun 22, 14:14 UTCJun 22, 15:14 UTC1h 0m
2026-06-21 LXJ428 - Jun 21, 21:10 UTCJun 21, 22:34 UTC1h 25m
2026-06-21 LXJ428 - Jun 21, 19:14 UTCJun 21, 19:34 UTC20m
2026-06-19 LXJ428 - Jun 19, 23:19 UTCJun 19, 23:54 UTC35m
2026-06-19 LXJ428 - Jun 19, 19:19 UTCJun 19, 22:09 UTC2h 50m
2026-06-19 LXJ428 - Jun 19, 16:09 UTCJun 19, 16:55 UTC45m
2026-06-18 LXJ428 - Jun 18, 23:35 UTCJun 19, 00:00 UTC25m
2026-06-18 LXJ428 - Jun 18, 21:15 UTCJun 18, 21:50 UTC35m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N428FX page for operator, model, and routing details .

Mode-S A519EA frequently asked

What is Mode-S code A519EA?
A519EA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N428FX.
Where is Mode-S A519EA registered?
Mode-S code A519EA is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A519EA broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A519EA, octal 51214752, decimal 10,820,074.
What flights does A519EA operate?
Mode-S A519EA has broadcast 1 distinct callsign, including LXJ428.