Apparatus

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sensors Mode-S transponder

A4EBC1

ICAO 24-bit transponder address · allocated to United States

Hex
A4EBC1
Octal
51165701
Decimal
10,808,257
Country
US
No current signal · last broadcast 11d ago
Flights observed
42
Distinct callsigns
1
Country
US
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S A4EBC1.

Country allocation

The ICAO 24-bit address A4EBC1 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
EJA416 - 42 2026-07-03

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-07-03 EJA416 - Jul 3, 00:50 UTCJul 3, 01:40 UTC50m
2026-07-02 EJA416 - Jul 2, 21:50 UTCJul 3, 00:05 UTC2h 15m
2026-07-02 EJA416 - Jul 2, 20:50 UTCJul 2, 21:05 UTC15m
2026-07-02 EJA416 - Jul 2, 18:00 UTCJul 2, 18:55 UTC55m
2026-07-02 EJA416 - Jul 2, 16:25 UTCJul 2, 16:35 UTC10m
2026-07-02 EJA416 - Jul 2, 00:05 UTCJul 2, 01:05 UTC1h 0m
2026-07-01 EJA416 - Jul 1, 22:20 UTCJul 1, 23:00 UTC40m
2026-06-23 EJA416 - Jun 23, 23:24 UTCJun 24, 01:04 UTC1h 40m
2026-06-22 EJA416 - Jun 22, 15:45 UTCJun 22, 17:00 UTC1h 15m
2026-06-22 EJA416 - Jun 22, 14:10 UTCJun 22, 14:49 UTC40m
2026-06-21 EJA416 - Jun 21, 18:50 UTCJun 21, 19:20 UTC30m
2026-06-21 EJA416 - Jun 21, 15:09 UTCJun 21, 17:15 UTC2h 5m
2026-06-21 EJA416 - Jun 21, 02:40 UTCJun 21, 03:19 UTC40m
2026-06-21 EJA416 - Jun 21, 00:40 UTCJun 21, 02:04 UTC1h 25m
2026-06-20 EJA416 - Jun 20, 21:44 UTCJun 20, 21:55 UTC10m
2026-06-20 EJA416 - Jun 20, 17:29 UTCJun 20, 19:24 UTC1h 55m
2026-06-18 EJA416 - Jun 18, 01:30 UTCJun 18, 03:25 UTC1h 55m
2026-06-17 EJA416 - Jun 17, 22:15 UTCJun 17, 22:55 UTC40m
2026-06-17 EJA416 - Jun 17, 20:05 UTCJun 17, 20:30 UTC25m
2026-06-17 EJA416 - Jun 17, 17:10 UTCJun 17, 18:50 UTC1h 40m
2026-06-17 EJA416 LAS → SCF Jun 17, 15:10 UTCJun 17, 15:55 UTC45m
2026-06-16 EJA416 - Jun 16, 22:25 UTCJun 16, 23:25 UTC1h 0m
2026-06-16 EJA416 - Jun 16, 18:29 UTCJun 16, 21:50 UTC3h 21m
2026-06-16 EJA416 - Jun 16, 15:30 UTCJun 16, 17:45 UTC2h 15m
2026-06-16 EJA416 - Jun 16, 13:19 UTCJun 16, 14:15 UTC55m
2026-06-15 EJA416 - Jun 15, 22:25 UTCJun 16, 00:00 UTC1h 35m
2026-06-15 EJA416 BED → HPN Jun 15, 20:54 UTCJun 15, 21:35 UTC40m
2026-06-15 EJA416 - Jun 15, 18:40 UTCJun 15, 19:05 UTC25m
2026-06-15 EJA416 - Jun 15, 14:55 UTCJun 15, 17:20 UTC2h 25m
2026-06-15 EJA416 - Jun 15, 11:10 UTCJun 15, 13:10 UTC2h 0m
2026-06-14 EJA416 - Jun 14, 18:55 UTCJun 14, 22:15 UTC3h 20m
2026-06-14 EJA416 - Jun 14, 15:20 UTCJun 14, 15:50 UTC30m
2026-06-14 EJA416 - Jun 14, 12:20 UTCJun 14, 14:35 UTC2h 15m
2026-06-11 EJA416 BUF → SUA Jun 11, 19:05 UTCJun 11, 19:35 UTC30m
2026-06-11 EJA416 BUF → SUA Jun 11, 18:15 UTCJun 11, 18:30 UTC15m
2026-06-11 EJA416 BUF → SUA Jun 11, 16:25 UTCJun 11, 17:00 UTC35m
2026-06-11 EJA416 BUF → SUA Jun 11, 14:50 UTCJun 11, 15:50 UTC1h 0m
2026-06-10 EJA416 BUF → SUA Jun 10, 16:55 UTCJun 10, 17:45 UTC50m
2026-06-06 EJA416 BUF → SUA Jun 6, 12:20 UTCJun 6, 15:25 UTC3h 5m
2026-06-05 EJA416 BUF → SUA Jun 5, 22:55 UTCJun 5, 23:45 UTC50m
2026-06-05 EJA416 BUF → SUA Jun 5, 19:55 UTCJun 5, 22:20 UTC2h 25m
2026-06-05 EJA416 BUF → SUA Jun 5, 14:45 UTCJun 5, 15:05 UTC20m

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 A4EBC1 frequently asked

What is Mode-S code A4EBC1?
A4EBC1 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S A4EBC1 registered?
Mode-S code A4EBC1 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 A4EBC1 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4EBC1, octal 51165701, decimal 10,808,257.
What flights does A4EBC1 operate?
Mode-S A4EBC1 has broadcast 1 distinct callsign, including EJA416.