sensors Mode-S transponder

AC4E81

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N892TX · HAWKER BEECHCRAFT Hawker 750/850 · operated by BYTE ME TRANSPORTATION INC

Hex
AC4E81
Octal
53047201
Decimal
11,292,289
Country
US
Tail
N892TX
Type
H25B
No current signal · last broadcast 10h ago
Flights observed
127
Distinct callsigns
1
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S AC4E81.

Country allocation

The ICAO 24-bit address AC4E81 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
N892TX - 127 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N892TX - Jul 17, 20:20 UTCJul 17, 21:55 UTC1h 35m
2026-07-17 N892TX - Jul 17, 15:25 UTCJul 17, 16:15 UTC50m
2026-07-16 N892TX - Jul 16, 22:00 UTCJul 16, 22:10 UTC10m
2026-07-16 N892TX - Jul 16, 16:19 UTCJul 16, 18:15 UTC1h 55m
2026-07-16 N892TX - Jul 16, 13:30 UTCJul 16, 14:40 UTC1h 10m
2026-07-15 N892TX - Jul 15, 16:30 UTCJul 15, 17:10 UTC40m
2026-07-15 N892TX - Jul 15, 10:50 UTCJul 15, 11:25 UTC35m
2026-07-14 N892TX - Jul 14, 18:55 UTCJul 14, 19:30 UTC35m
2026-07-14 N892TX - Jul 14, 10:55 UTCJul 14, 11:30 UTC35m
2026-07-13 N892TX - Jul 13, 18:35 UTCJul 13, 19:55 UTC1h 20m
2026-07-13 N892TX - Jul 13, 16:20 UTCJul 13, 17:55 UTC1h 35m
2026-07-12 N892TX - Jul 12, 18:20 UTCJul 12, 18:55 UTC35m
2026-07-12 N892TX - Jul 12, 16:20 UTCJul 12, 17:40 UTC1h 20m
2026-07-12 N892TX - Jul 12, 11:05 UTCJul 12, 12:15 UTC1h 10m
2026-07-11 N892TX - Jul 11, 21:20 UTCJul 11, 21:50 UTC30m
2026-07-09 N892TX - Jul 9, 14:05 UTCJul 9, 14:45 UTC40m
2026-07-09 N892TX - Jul 9, 11:45 UTCJul 9, 12:30 UTC45m
2026-07-08 N892TX - Jul 8, 17:40 UTCJul 8, 18:10 UTC30m
2026-07-07 N892TX - Jul 7, 13:20 UTCJul 7, 13:45 UTC25m
2026-07-05 N892TX - Jul 5, 18:15 UTCJul 5, 18:45 UTC30m
2026-07-05 N892TX - Jul 5, 16:15 UTCJul 5, 17:00 UTC45m
2026-07-04 N892TX - Jul 4, 18:05 UTCJul 4, 19:55 UTC1h 50m
2026-07-02 N892TX - Jul 2, 17:05 UTCJul 2, 21:25 UTC4h 20m
2026-07-01 N892TX - Jul 1, 23:10 UTCJul 1, 23:20 UTC10m
2026-07-01 N892TX - Jul 1, 14:15 UTCJul 1, 14:45 UTC30m
2026-06-29 N892TX - Jun 29, 21:19 UTCJun 29, 21:54 UTC35m
2026-06-29 N892TX - Jun 29, 15:39 UTCJun 29, 18:55 UTC3h 15m
2026-06-29 N892TX BED → PVD Jun 29, 12:55 UTCJun 29, 13:14 UTC20m
2026-06-27 N892TX OPF → BED Jun 27, 17:25 UTCJun 27, 20:24 UTC3h 0m
2026-06-27 N892TX - Jun 27, 14:54 UTCJun 27, 15:39 UTC45m
2026-06-24 N892TX - Jun 24, 23:20 UTCJun 25, 00:09 UTC50m
2026-06-24 N892TX - Jun 24, 21:44 UTCJun 24, 22:45 UTC1h 0m
2026-06-24 N892TX - Jun 24, 14:00 UTCJun 24, 16:09 UTC2h 10m
2026-06-23 N892TX - Jun 23, 22:44 UTCJun 23, 23:59 UTC1h 15m
2026-06-23 N892TX - Jun 23, 17:15 UTCJun 23, 18:39 UTC1h 25m
2026-06-22 N892TX - Jun 22, 21:00 UTCJun 22, 21:49 UTC50m
2026-06-22 N892TX - Jun 22, 15:45 UTCJun 22, 16:54 UTC1h 10m
2026-06-21 N892TX - Jun 21, 13:54 UTCJun 21, 15:05 UTC1h 10m
2026-06-20 N892TX - Jun 20, 17:14 UTCJun 20, 18:29 UTC1h 15m
2026-06-20 N892TX FRG → EWB Jun 20, 15:19 UTCJun 20, 15:49 UTC30m
2026-06-19 N892TX - Jun 19, 15:24 UTCJun 19, 15:54 UTC30m
2026-06-19 N892TX - Jun 19, 10:35 UTCJun 19, 11:14 UTC40m
2026-06-18 N892TX - Jun 18, 15:05 UTCJun 18, 16:45 UTC1h 40m
2026-06-17 N892TX - Jun 17, 13:55 UTCJun 17, 15:55 UTC2h 0m
2026-06-17 N892TX - Jun 17, 12:05 UTCJun 17, 12:20 UTC15m
2026-06-15 N892TX - Jun 15, 17:40 UTCJun 15, 19:50 UTC2h 10m
2026-06-15 N892TX - Jun 15, 14:00 UTCJun 15, 14:34 UTC35m
2026-06-14 N892TX - Jun 14, 17:55 UTCJun 14, 18:40 UTC45m
2026-06-14 N892TX - Jun 14, 15:55 UTCJun 14, 16:20 UTC25m
2026-06-10 N892TX - Jun 10, 20:25 UTCJun 10, 21:00 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 N892TX page for operator, model, and routing details .

Mode-S AC4E81 frequently asked

What is Mode-S code AC4E81?
AC4E81 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N892TX.
Where is Mode-S AC4E81 registered?
Mode-S code AC4E81 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 AC4E81 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC4E81, octal 53047201, decimal 11,292,289.
What flights does AC4E81 operate?
Mode-S AC4E81 has broadcast 1 distinct callsign, including N892TX.