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sensors Mode-S transponder

A03F33

ICAO 24-bit transponder address · allocated to United States

Hex
A03F33
Octal
50037463
Decimal
10,501,939
Country
US
No current signal · last broadcast 4h ago
Flights observed
86
Distinct callsigns
2
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A03F33.

Country allocation

The ICAO 24-bit address A03F33 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 2 distinct

Callsign Airline Flights Last seen
FFL1734 - 82 2026-07-17
N115EJ - 4 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 FFL1734 - Jul 17, 21:20 UTCJul 17, 22:49 UTC1h 30m
2026-07-17 FFL1734 - Jul 17, 18:29 UTCJul 17, 18:50 UTC20m
2026-07-17 FFL1734 - Jul 17, 01:49 UTCJul 17, 02:05 UTC15m
2026-07-16 FFL1734 - Jul 16, 19:14 UTCJul 16, 19:45 UTC30m
2026-07-16 FFL1734 - Jul 16, 14:10 UTCJul 16, 15:30 UTC1h 20m
2026-07-15 FFL1734 - Jul 15, 22:55 UTCJul 15, 23:45 UTC50m
2026-07-15 N115EJ - Jul 15, 13:50 UTCJul 15, 14:30 UTC40m
2026-07-15 FFL1734 - Jul 15, 00:10 UTCJul 15, 01:25 UTC1h 15m
2026-07-14 N115EJ - Jul 14, 20:15 UTCJul 14, 20:35 UTC20m
2026-07-14 FFL1734 RNT → BLI Jul 14, 17:45 UTCJul 14, 18:05 UTC20m
2026-07-14 FFL1734 - Jul 14, 14:20 UTCJul 14, 15:25 UTC1h 5m
2026-07-09 FFL1734 - Jul 9, 17:20 UTCJul 9, 19:10 UTC1h 50m
2026-07-08 FFL1734 - Jul 8, 14:10 UTCJul 8, 19:45 UTC5h 35m
2026-07-07 FFL1734 - Jul 7, 22:30 UTCJul 7, 23:15 UTC45m
2026-07-07 FFL1734 - Jul 7, 20:45 UTCJul 7, 21:00 UTC15m
2026-07-07 FFL1734 - Jul 7, 15:30 UTCJul 7, 15:50 UTC20m
2026-07-07 FFL1734 - Jul 7, 14:20 UTCJul 7, 15:10 UTC50m
2026-07-03 FFL1734 - Jul 3, 19:35 UTCJul 3, 22:45 UTC3h 10m
2026-07-02 FFL1734 - Jul 2, 22:40 UTCJul 2, 23:00 UTC20m
2026-07-02 FFL1734 - Jul 2, 15:25 UTCJul 2, 16:30 UTC1h 5m
2026-07-02 FFL1734 - Jul 2, 13:20 UTCJul 2, 15:00 UTC1h 40m
2026-07-01 FFL1734 - Jul 1, 19:20 UTCJul 1, 21:05 UTC1h 45m
2026-07-01 FFL1734 - Jul 1, 17:20 UTCJul 1, 17:40 UTC20m
2026-06-30 FFL1734 - Jun 30, 13:50 UTCJun 30, 15:45 UTC1h 55m
2026-06-29 FFL1734 - Jun 29, 18:55 UTCJun 29, 19:29 UTC35m
2026-06-29 FFL1734 - Jun 29, 14:14 UTCJun 29, 14:25 UTC10m
2026-06-24 FFL1734 - Jun 24, 23:54 UTCJun 25, 00:05 UTC10m
2026-06-24 FFL1734 - Jun 24, 21:09 UTCJun 24, 21:19 UTC10m
2026-06-24 FFL1734 - Jun 24, 16:50 UTCJun 24, 16:59 UTC10m
2026-06-24 N115EJ - Jun 24, 14:15 UTCJun 24, 15:09 UTC55m
2026-06-23 FFL1734 - Jun 23, 20:10 UTCJun 23, 23:14 UTC3h 5m
2026-06-23 FFL1734 - Jun 23, 16:44 UTCJun 23, 17:15 UTC30m
2026-06-22 FFL1734 - Jun 22, 21:25 UTCJun 22, 21:49 UTC25m
2026-06-22 FFL1734 - Jun 22, 17:04 UTCJun 22, 18:00 UTC55m
2026-06-22 FFL1734 - Jun 22, 14:55 UTCJun 22, 16:34 UTC1h 40m
2026-06-17 FFL1734 - Jun 17, 22:10 UTCJun 17, 22:50 UTC40m
2026-06-17 FFL1734 - Jun 17, 13:45 UTCJun 17, 14:35 UTC50m
2026-06-10 FFL1734 - Jun 10, 20:10 UTCJun 10, 22:05 UTC1h 55m
2026-06-09 FFL1734 - Jun 9, 19:35 UTCJun 9, 19:55 UTC20m
2026-06-09 FFL1734 - Jun 9, 19:00 UTCJun 9, 19:10 UTC10m
2026-06-09 FFL1734 - Jun 9, 14:40 UTCJun 9, 15:50 UTC1h 10m
2026-06-05 FFL1734 - Jun 5, 21:35 UTCJun 5, 22:20 UTC45m
2026-06-04 FFL1734 - Jun 4, 16:50 UTCJun 4, 17:00 UTC10m
2026-06-04 FFL1734 - Jun 4, 14:15 UTCJun 4, 15:15 UTC1h 0m
2026-06-03 FFL1734 - Jun 3, 22:45 UTCJun 3, 23:30 UTC45m
2026-06-03 N115EJ - Jun 3, 17:00 UTCJun 3, 17:25 UTC25m
2026-06-03 FFL1734 - Jun 3, 14:10 UTCJun 3, 15:25 UTC1h 15m
2026-05-27 FFL1734 - May 27, 22:55 UTCMay 28, 00:00 UTC1h 5m
2026-05-26 FFL1734 - May 26, 14:14 UTCMay 26, 16:05 UTC1h 50m
2026-05-21 FFL1734 - May 21, 20:35 UTCMay 21, 22:35 UTC2h 0m

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.

Mode-S A03F33 frequently asked

What is Mode-S code A03F33?
A03F33 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S A03F33 registered?
Mode-S code A03F33 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 A03F33 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A03F33, octal 50037463, decimal 10,501,939.
What flights does A03F33 operate?
Mode-S A03F33 has broadcast 2 distinct callsigns, including FFL1734, N115EJ.