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sensors Mode-S transponder

A54EB8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N441E · CESSNA 441 Conquest · operated by CLAUSEN AVIATION LLC

Hex
A54EB8
Octal
51247270
Decimal
10,833,592
Country
US
Tail
N441E
Type
C441
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
81
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S A54EB8.

Country allocation

The ICAO 24-bit address A54EB8 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
N441E - 81 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N441E - Jul 26, 17:05 UTCJul 26, 20:15 UTC3h 10m
2026-07-23 N441E - Jul 23, 13:15 UTCJul 23, 16:40 UTC3h 25m
2026-07-20 N441E - Jul 20, 20:30 UTCJul 20, 22:45 UTC2h 15m
2026-07-20 N441E - Jul 20, 13:15 UTCJul 20, 13:40 UTC25m
2026-07-20 N441E - Jul 20, 10:55 UTCJul 20, 12:40 UTC1h 45m
2026-07-17 N441E - Jul 17, 19:30 UTCJul 17, 20:04 UTC35m
2026-07-17 N441E - Jul 17, 12:15 UTCJul 17, 12:55 UTC40m
2026-07-16 N441E - Jul 16, 19:55 UTCJul 16, 22:45 UTC2h 50m
2026-07-16 N441E - Jul 16, 15:45 UTCJul 16, 18:00 UTC2h 15m
2026-07-14 N441E - Jul 14, 17:55 UTCJul 14, 19:05 UTC1h 10m
2026-07-14 N441E - Jul 14, 14:15 UTCJul 14, 15:05 UTC50m
2026-07-14 N441E - Jul 14, 12:45 UTCJul 14, 12:55 UTC10m
2026-07-07 N441E - Jul 7, 19:25 UTCJul 7, 21:05 UTC1h 40m
2026-07-07 N441E - Jul 7, 16:40 UTCJul 7, 17:40 UTC1h 0m
2026-07-05 N441E - Jul 5, 21:10 UTCJul 5, 21:20 UTC10m
2026-07-05 N441E - Jul 5, 19:50 UTCJul 5, 20:40 UTC50m
2026-07-04 N441E - Jul 4, 16:15 UTCJul 4, 17:15 UTC1h 0m
2026-07-04 N441E - Jul 4, 14:25 UTCJul 4, 14:40 UTC15m
2026-07-01 N441E - Jul 1, 19:25 UTCJul 1, 20:45 UTC1h 20m
2026-06-30 N441E - Jun 30, 13:10 UTCJun 30, 14:25 UTC1h 15m
2026-06-28 N441E - Jun 28, 05:29 UTCJun 28, 05:49 UTC20m
2026-06-27 N441E - Jun 27, 23:50 UTCJun 28, 00:09 UTC20m
2026-06-27 N441E - Jun 27, 22:25 UTCJun 27, 23:10 UTC45m
2026-06-26 N441E - Jun 26, 17:29 UTCJun 26, 18:39 UTC1h 10m
2026-06-26 N441E - Jun 26, 13:24 UTCJun 26, 14:44 UTC1h 20m
2026-06-26 N441E - Jun 26, 12:00 UTCJun 26, 12:24 UTC25m
2026-06-24 N441E - Jun 24, 19:15 UTCJun 24, 19:34 UTC20m
2026-06-24 N441E - Jun 24, 18:20 UTCJun 24, 18:44 UTC25m
2026-06-24 N441E - Jun 24, 13:00 UTCJun 24, 13:40 UTC40m
2026-06-24 N441E - Jun 24, 11:05 UTCJun 24, 11:29 UTC25m
2026-06-23 N441E - Jun 23, 14:25 UTCJun 23, 15:09 UTC45m
2026-06-23 N441E - Jun 23, 13:29 UTCJun 23, 13:50 UTC20m
2026-06-21 N441E - Jun 21, 21:49 UTCJun 22, 02:19 UTC4h 30m
2026-06-21 N441E - Jun 21, 16:34 UTCJun 21, 21:14 UTC4h 40m
2026-06-20 N441E - Jun 20, 14:59 UTCJun 20, 16:39 UTC1h 40m
2026-06-19 N441E - Jun 19, 14:44 UTCJun 19, 15:39 UTC55m
2026-06-19 N441E - Jun 19, 12:34 UTCJun 19, 13:20 UTC45m
2026-06-18 N441E - Jun 18, 14:20 UTCJun 18, 15:10 UTC50m
2026-06-18 N441E - Jun 18, 12:25 UTCJun 18, 13:20 UTC55m
2026-06-17 N441E - Jun 17, 23:55 UTCJun 18, 03:50 UTC3h 55m
2026-06-17 N441E - Jun 17, 19:10 UTCJun 17, 23:20 UTC4h 10m
2026-06-17 N441E - Jun 17, 18:00 UTCJun 17, 18:25 UTC25m
2026-06-16 N441E - Jun 16, 20:40 UTCJun 16, 21:25 UTC45m
2026-06-16 N441E - Jun 16, 12:10 UTCJun 16, 12:50 UTC40m
2026-06-14 N441E - Jun 14, 04:05 UTCJun 14, 04:25 UTC20m
2026-06-14 N441E - Jun 14, 01:05 UTCJun 14, 03:40 UTC2h 35m
2026-06-13 N441E - Jun 13, 19:35 UTCJun 13, 20:45 UTC1h 10m
2026-06-13 N441E - Jun 13, 19:05 UTCJun 13, 19:25 UTC20m
2026-06-12 N441E - Jun 12, 20:40 UTCJun 12, 21:55 UTC1h 15m
2026-06-12 N441E - Jun 12, 18:10 UTCJun 12, 19:50 UTC1h 40m

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 N441E page for operator, model, and routing details .

Mode-S A54EB8 frequently asked

What is Mode-S code A54EB8?
A54EB8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N441E.
Where is Mode-S A54EB8 registered?
Mode-S code A54EB8 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 A54EB8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A54EB8, octal 51247270, decimal 10,833,592.
What flights does A54EB8 operate?
Mode-S A54EB8 has broadcast 1 distinct callsign, including N441E.