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sensors Mode-S transponder

4CA82B

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-FXX · BOEING 737-800

Hex
4CA82B
Octal
23124053
Decimal
5,023,787
Country
IE
Tail
EI-FXX
Type
B738
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
284
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S 4CA82B.

Country allocation

The ICAO 24-bit address 4CA82B falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland 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 20 distinct

Callsign Airline Flights Last seen
MSA55B - 25 2026-07-20
MSA92C Mistral Air 23 2026-07-23
MSA56B - 23 2026-07-15
MSA91C - 22 2026-07-22
MSA79F - 22 2026-07-22
MSA9792 Mistral Air 20 2026-07-21
MSA9712 - 17 2026-07-01
MSA711 - 16 2026-07-01
MSA763 Mistral Air 14 2026-07-17
MSA734 Mistral Air 12 2026-06-12
MSA976P - 11 2026-07-17
MSA9784 - 10 2026-07-01
MSA84F Mistral Air 9 2026-06-11
MSA83E Mistral Air 9 2026-06-11
MSA82E Mistral Air 9 2026-06-11
MSA61P Mistral Air 8 2026-05-15
MSA9732 - 6 2026-07-10
MSA33B Mistral Air 6 2026-07-19
MSA9786 Mistral Air 3 2026-06-15
MSA86E Mistral Air 3 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 MSA9796 CTA → VBS Jul 26, 20:40 UTCJul 26, 22:00 UTC1h 20m
2026-07-26 MSA95F FCO → CTA Jul 26, 18:05 UTCJul 26, 18:50 UTC45m
2026-07-25 MSA9714 MLA → FCO Jul 25, 02:50 UTCJul 25, 03:55 UTC1h 5m
2026-07-25 MSA713 - Jul 25, 01:20 UTCJul 25, 01:45 UTC25m
2026-07-23 MSA92C VBS → CTA Jul 23, 22:55 UTCJul 24, 00:05 UTC1h 10m
2026-07-22 MSA91C - Jul 22, 20:35 UTCJul 22, 21:55 UTC1h 20m
2026-07-22 MSA79F - Jul 22, 18:05 UTCJul 22, 18:50 UTC45m
2026-07-22 MSA9714 MLA → FCO Jul 22, 03:55 UTCJul 22, 05:05 UTC1h 10m
2026-07-22 MSA713 - Jul 22, 02:40 UTCJul 22, 03:00 UTC20m
2026-07-21 MSA92C VBS → CTA Jul 21, 22:55 UTCJul 22, 00:30 UTC1h 35m
2026-07-21 MSA91C - Jul 21, 20:25 UTCJul 21, 21:45 UTC1h 20m
2026-07-21 MSA79F - Jul 21, 18:05 UTCJul 21, 18:55 UTC50m
2026-07-21 MSA9792 CTA → FCO Jul 21, 01:25 UTCJul 21, 02:20 UTC55m
2026-07-20 MSA92C VBS → CTA Jul 20, 23:00 UTCJul 21, 00:15 UTC1h 15m
2026-07-20 MSA55B - Jul 20, 20:20 UTCJul 20, 21:30 UTC1h 10m
2026-07-19 MSA33B VBS → BRI Jul 19, 21:30 UTCJul 19, 22:30 UTC1h 0m
2026-07-17 MSA976P - Jul 17, 23:14 UTCJul 18, 00:19 UTC1h 5m
2026-07-17 MSA763 VBS → CAG Jul 17, 21:44 UTCJul 17, 22:20 UTC35m
2026-07-17 MSA763 VBS → CAG Jul 17, 20:00 UTCJul 17, 20:50 UTC50m
2026-07-17 MSA9893 LEJ → VBS Jul 17, 01:15 UTCJul 17, 02:30 UTC1h 15m
2026-07-16 MSA95S - Jul 16, 22:49 UTCJul 16, 23:59 UTC1h 10m
2026-07-16 MSA55B - Jul 16, 20:29 UTCJul 16, 21:35 UTC1h 5m
2026-07-15 MSA56B - Jul 15, 22:50 UTCJul 15, 23:50 UTC1h 0m
2026-07-15 MSA55B - Jul 15, 20:20 UTCJul 15, 21:25 UTC1h 5m
2026-07-14 MSA56B - Jul 14, 22:50 UTCJul 14, 23:55 UTC1h 5m
2026-07-14 MSA55B - Jul 14, 20:35 UTCJul 14, 21:40 UTC1h 5m
2026-07-13 MSA56B - Jul 13, 23:00 UTCJul 13, 23:55 UTC55m
2026-07-13 MSA55B - Jul 13, 20:20 UTCJul 13, 21:30 UTC1h 10m
2026-07-12 MSA33B - Jul 12, 21:05 UTCJul 12, 22:05 UTC1h 0m
2026-07-10 MSA976P - Jul 10, 23:10 UTCJul 11, 00:15 UTC1h 5m
2026-07-10 MSA763 VBS → CAG Jul 10, 21:20 UTCJul 10, 22:05 UTC45m
2026-07-10 MSA763 VBS → CAG Jul 10, 19:40 UTCJul 10, 20:40 UTC1h 0m
2026-07-10 MSA9732 - Jul 10, 00:55 UTCJul 10, 01:55 UTC1h 0m
2026-07-09 MSA56B - Jul 9, 22:40 UTCJul 9, 23:40 UTC1h 0m
2026-07-09 MSA55B - Jul 9, 20:35 UTCJul 9, 21:35 UTC1h 0m
2026-07-08 MSA56B - Jul 8, 23:05 UTCJul 9, 00:05 UTC1h 0m
2026-07-08 MSA55B - Jul 8, 20:30 UTCJul 8, 21:35 UTC1h 5m
2026-07-07 MSA56B - Jul 7, 23:00 UTCJul 8, 00:00 UTC1h 0m
2026-07-07 MSA55B - Jul 7, 20:20 UTCJul 7, 21:20 UTC1h 0m
2026-07-06 MSA56B - Jul 6, 23:05 UTCJul 7, 00:05 UTC1h 0m
2026-07-06 MSA55B - Jul 6, 20:55 UTCJul 6, 21:55 UTC1h 0m
2026-07-05 MSA33B - Jul 5, 21:05 UTCJul 5, 22:05 UTC1h 0m
2026-07-03 MSA976P - Jul 3, 23:10 UTCJul 4, 00:20 UTC1h 10m
2026-07-03 MSA763 VBS → CAG Jul 3, 21:15 UTCJul 3, 21:40 UTC25m
2026-07-03 MSA763 VBS → CAG Jul 3, 19:25 UTCJul 3, 20:15 UTC50m
2026-07-03 MSA9732 - Jul 3, 01:10 UTCJul 3, 02:10 UTC1h 0m
2026-07-02 MSA56B - Jul 2, 22:50 UTCJul 2, 23:55 UTC1h 5m
2026-07-02 MSA55B - Jul 2, 20:20 UTCJul 2, 21:20 UTC1h 0m
2026-07-01 MSA56B - Jul 1, 22:55 UTCJul 2, 00:00 UTC1h 5m
2026-07-01 MSA91C - Jul 1, 20:30 UTCJul 1, 21:45 UTC1h 15m

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 EI-FXX page for operator, model, and routing details .

Mode-S 4CA82B frequently asked

What is Mode-S code 4CA82B?
4CA82B is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-FXX.
Where is Mode-S 4CA82B registered?
Mode-S code 4CA82B is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA82B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA82B, octal 23124053, decimal 5,023,787.
What flights does 4CA82B operate?
Mode-S 4CA82B has broadcast 20 distinct callsigns, including MSA55B, MSA92C, MSA56B, MSA91C, MSA79F.