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sensors Mode-S transponder

AB3C72

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N823EP · operated by EPIC AVIATION INC

Hex
AB3C72
Octal
52636162
Decimal
11,222,130
Country
US
Tail
N823EP
Type
C172
No current signal · last broadcast 4h ago
Flights observed
323
Distinct callsigns
1
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S AB3C72.

Country allocation

The ICAO 24-bit address AB3C72 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
EPI823 - 323 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 EPI823 - Jul 15, 14:50 UTCJul 15, 16:05 UTC1h 15m
2026-07-15 EPI823 - Jul 15, 11:45 UTCJul 15, 13:20 UTC1h 35m
2026-07-15 EPI823 - Jul 15, 02:50 UTCJul 15, 03:20 UTC30m
2026-07-15 EPI823 - Jul 15, 01:20 UTCJul 15, 02:10 UTC50m
2026-07-14 EPI823 - Jul 14, 14:40 UTCJul 14, 16:05 UTC1h 25m
2026-07-14 EPI823 - Jul 14, 12:00 UTCJul 14, 12:45 UTC45m
2026-07-13 EPI823 - Jul 13, 16:45 UTCJul 13, 17:55 UTC1h 10m
2026-07-13 EPI823 - Jul 13, 13:10 UTCJul 13, 14:00 UTC50m
2026-07-12 EPI823 - Jul 12, 14:55 UTCJul 12, 15:45 UTC50m
2026-07-12 EPI823 - Jul 12, 11:35 UTCJul 12, 12:25 UTC50m
2026-07-11 EPI823 - Jul 11, 21:30 UTCJul 12, 02:40 UTC5h 10m
2026-07-11 EPI823 - Jul 11, 17:55 UTCJul 11, 18:50 UTC55m
2026-07-11 EPI823 - Jul 11, 16:05 UTCJul 11, 16:40 UTC35m
2026-07-11 EPI823 - Jul 11, 13:15 UTCJul 11, 14:55 UTC1h 40m
2026-07-11 EPI823 - Jul 11, 01:00 UTCJul 11, 01:35 UTC35m
2026-07-10 EPI823 - Jul 10, 18:50 UTCJul 10, 19:25 UTC35m
2026-07-10 EPI823 - Jul 10, 13:50 UTCJul 10, 15:00 UTC1h 10m
2026-07-10 EPI823 - Jul 10, 10:55 UTCJul 10, 11:45 UTC50m
2026-07-10 EPI823 - Jul 10, 00:35 UTCJul 10, 03:25 UTC2h 50m
2026-07-09 EPI823 - Jul 9, 21:45 UTCJul 9, 23:55 UTC2h 10m
2026-07-09 EPI823 - Jul 9, 20:00 UTCJul 9, 20:55 UTC55m
2026-07-09 EPI823 - Jul 9, 16:35 UTCJul 9, 17:30 UTC55m
2026-07-09 EPI823 - Jul 9, 13:55 UTCJul 9, 15:15 UTC1h 20m
2026-07-09 EPI823 - Jul 9, 11:15 UTCJul 9, 12:35 UTC1h 20m
2026-07-08 EPI823 - Jul 8, 20:55 UTCJul 8, 21:20 UTC25m
2026-07-08 EPI823 - Jul 8, 15:30 UTCJul 8, 17:00 UTC1h 30m
2026-07-08 EPI823 - Jul 8, 11:50 UTCJul 8, 13:00 UTC1h 10m
2026-07-07 EPI823 - Jul 7, 16:55 UTCJul 7, 17:35 UTC40m
2026-07-07 EPI823 - Jul 7, 14:30 UTCJul 7, 15:05 UTC35m
2026-07-07 EPI823 - Jul 7, 11:50 UTCJul 7, 13:05 UTC1h 15m
2026-07-06 EPI823 - Jul 6, 17:15 UTCJul 6, 18:50 UTC1h 35m
2026-07-06 EPI823 - Jul 6, 14:20 UTCJul 6, 15:40 UTC1h 20m
2026-07-06 EPI823 - Jul 6, 12:10 UTCJul 6, 13:15 UTC1h 5m
2026-07-06 EPI823 - Jul 6, 00:55 UTCJul 6, 01:45 UTC50m
2026-07-05 EPI823 - Jul 5, 15:45 UTCJul 5, 16:50 UTC1h 5m
2026-07-04 EPI823 - Jul 4, 14:45 UTCJul 4, 15:00 UTC15m
2026-07-04 EPI823 - Jul 4, 12:40 UTCJul 4, 13:00 UTC20m
2026-07-04 EPI823 - Jul 4, 01:15 UTCJul 4, 03:00 UTC1h 45m
2026-07-03 EPI823 - Jul 3, 22:05 UTCJul 4, 00:10 UTC2h 5m
2026-07-03 EPI823 - Jul 3, 12:30 UTCJul 3, 14:40 UTC2h 10m
2026-07-02 EPI823 - Jul 2, 20:40 UTCJul 2, 20:55 UTC15m
2026-07-02 EPI823 - Jul 2, 17:05 UTCJul 2, 18:30 UTC1h 25m
2026-07-02 EPI823 - Jul 2, 13:45 UTCJul 2, 15:25 UTC1h 40m
2026-07-01 EPI823 - Jul 1, 18:35 UTCJul 1, 20:10 UTC1h 35m
2026-07-01 EPI823 - Jul 1, 14:40 UTCJul 1, 15:45 UTC1h 5m
2026-07-01 EPI823 - Jul 1, 12:40 UTCJul 1, 13:40 UTC1h 0m
2026-07-01 EPI823 - Jul 1, 02:05 UTCJul 1, 02:25 UTC20m
2026-06-30 EPI823 - Jun 30, 16:15 UTCJun 30, 17:50 UTC1h 35m
2026-06-30 EPI823 - Jun 30, 13:55 UTCJun 30, 15:00 UTC1h 5m
2026-06-30 EPI823 - Jun 30, 11:10 UTCJun 30, 12:15 UTC1h 5m

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 N823EP page for operator, model, and routing details .

Mode-S AB3C72 frequently asked

What is Mode-S code AB3C72?
AB3C72 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N823EP.
Where is Mode-S AB3C72 registered?
Mode-S code AB3C72 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 AB3C72 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 AB3C72, octal 52636162, decimal 11,222,130.
What flights does AB3C72 operate?
Mode-S AB3C72 has broadcast 1 distinct callsign, including EPI823.