Apparatus

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sensors Mode-S transponder

4CAF94

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-FPW · BOMBARDIER Regional Jet CRJ-900

Hex
4CAF94
Octal
23127624
Decimal
5,025,684
Country
IE
Tail
EI-FPW
Type
CRJ9
No current signal · last broadcast 5h ago
Flights observed
293
Distinct callsigns
20
Country
IE
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 4CAF94.

Country allocation

The ICAO 24-bit address 4CAF94 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
SAS2498 Scandinavian Airlines System 8 2026-05-26
SAS2497 Scandinavian Airlines System 8 2026-05-26
SAS30U - 7 2026-05-12
SAS84P - 6 2026-05-27
SAS41T Scandinavian Airlines System 6 2026-05-19
SAS40L Scandinavian Airlines System 6 2026-05-26
SAS742 Scandinavian Airlines System 5 2026-05-17
SAS739 Scandinavian Airlines System 5 2026-05-22
SAS1790 Scandinavian Airlines System 5 2026-05-25
SAS898 Scandinavian Airlines System 4 2026-05-18
SAS82T Scandinavian Airlines System 4 2026-05-26
SAS658 Scandinavian Airlines System 4 2026-05-25
SAS657 Scandinavian Airlines System 4 2026-05-25
SAS36F Scandinavian Airlines System 4 2026-05-12
SAS2584 Scandinavian Airlines System 4 2026-05-27
SAS2583 Scandinavian Airlines System 4 2026-05-27
SAS2536 Scandinavian Airlines System 4 2026-05-25
SAS2535 Scandinavian Airlines System 4 2026-05-25
SAS21M Scandinavian Airlines System 4 2026-05-14
SAS1641 Scandinavian Airlines System 4 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SAS629 CPH → DUS May 29, 18:55 UTCMay 29, 20:05 UTC1h 10m
2026-05-29 SAS461 OSL → CPH May 29, 16:20 UTCMay 29, 17:05 UTC45m
2026-05-29 SAS464 OSL → CPH May 29, 14:35 UTCMay 29, 15:30 UTC55m
2026-05-29 SAS2987 KRS → CPH May 29, 13:05 UTCMay 29, 13:50 UTC45m
2026-05-29 SAS2986 CPH → KRS May 29, 11:35 UTCMay 29, 12:15 UTC40m
2026-05-29 SAS684 CPH → MXP May 29, 07:30 UTCMay 29, 09:20 UTC1h 50m
2026-05-29 SAS683 MXP → CPH May 29, 04:25 UTCMay 29, 06:00 UTC1h 35m
2026-05-28 SAS1800 KRK → CPH May 28, 18:15 UTCMay 28, 19:30 UTC1h 15m
2026-05-28 SAS1799 CPH → KRK May 28, 16:10 UTCMay 28, 17:10 UTC1h 0m
2026-05-28 SAS1643 RIX → CPH May 28, 12:55 UTCMay 28, 14:00 UTC1h 5m
2026-05-28 SAS1642 CPH → RIX May 28, 11:00 UTCMay 28, 12:05 UTC1h 5m
2026-05-28 SAS1797 TLL → CPH May 28, 08:35 UTCMay 28, 09:55 UTC1h 20m
2026-05-28 SAS1798 CPH → TLL May 28, 06:30 UTCMay 28, 07:45 UTC1h 15m
2026-05-27 SAS2584 LUX → CPH May 27, 17:55 UTCMay 27, 19:10 UTC1h 15m
2026-05-27 SAS2583 CPH → LUX May 27, 16:00 UTCMay 27, 17:15 UTC1h 15m
2026-05-27 SAS1622 DUS → CPH May 27, 13:35 UTCMay 27, 14:35 UTC1h 0m
2026-05-27 SAS1621 CPH → DUS May 27, 11:40 UTCMay 27, 12:45 UTC1h 5m
2026-05-27 SAS99A TRD → CPH May 27, 08:20 UTCMay 27, 09:35 UTC1h 15m
2026-05-27 SAS68H CPH → TRD May 27, 06:15 UTCMay 27, 07:40 UTC1h 25m
2026-05-27 SAS84P - May 27, 03:20 UTCMay 27, 04:39 UTC1h 20m
2026-05-26 SAS1772 ARN → TLL May 26, 20:50 UTCMay 26, 21:29 UTC40m
2026-05-26 SAS029 IRG → CUQ May 26, 16:24 UTCMay 26, 17:15 UTC50m
2026-05-26 SAS028 ARN → UME May 26, 15:00 UTCMay 26, 15:29 UTC30m
2026-05-26 SAS82T TLL → ARN May 26, 13:10 UTCMay 26, 14:00 UTC50m
2026-05-26 SAS40L ARN → TLL May 26, 11:30 UTCMay 26, 12:14 UTC45m
2026-05-26 SAS2498 BLL → ARN May 26, 08:30 UTCMay 26, 09:29 UTC1h 0m
2026-05-26 SAS2497 ARN → BLL May 26, 06:34 UTCMay 26, 07:40 UTC1h 5m
2026-05-26 SAS1771 TLL → ARN May 26, 04:04 UTCMay 26, 04:54 UTC50m
2026-05-25 SAS1790 CPH → TLL May 25, 21:15 UTCMay 25, 22:30 UTC1h 15m
2026-05-25 SAS2536 BHX → CPH May 25, 18:30 UTCMay 25, 19:54 UTC1h 25m
2026-05-25 SAS2535 CPH → BHX May 25, 15:45 UTCMay 25, 17:20 UTC1h 35m
2026-05-25 SAS668 STR → CPH May 25, 13:30 UTCMay 25, 14:45 UTC1h 15m
2026-05-25 SAS86P - May 25, 11:30 UTCMay 25, 12:40 UTC1h 10m
2026-05-25 SAS658 STR → CPH May 25, 08:05 UTCMay 25, 09:25 UTC1h 20m
2026-05-25 SAS657 CPH → STR May 25, 06:05 UTCMay 25, 07:15 UTC1h 10m
2026-05-25 SAS648 HAM → CPH May 25, 04:20 UTCMay 25, 05:00 UTC40m
2026-05-24 SAS647 CPH → HAM May 24, 20:05 UTCMay 24, 20:45 UTC40m
2026-05-24 SAS449 GOT → CPH May 24, 18:45 UTCMay 24, 19:10 UTC25m
2026-05-24 SAS1444 CPH → GOT May 24, 17:25 UTCMay 24, 18:00 UTC35m
2026-05-24 SAS1210 AAL → CPH May 24, 15:50 UTCMay 24, 16:15 UTC25m
2026-05-24 SAS1215 CPH → AAL May 24, 14:35 UTCMay 24, 15:10 UTC35m
2026-05-24 SAS2987 KRS → CPH May 24, 13:10 UTCMay 24, 13:50 UTC40m
2026-05-24 SAS2986 CPH → KRS May 24, 11:25 UTCMay 24, 12:25 UTC1h 0m
2026-05-24 SAS2582 LUX → CPH May 24, 08:45 UTCMay 24, 09:55 UTC1h 10m
2026-05-24 SAS2581 CPH → LUX May 24, 06:40 UTCMay 24, 07:50 UTC1h 10m
2026-05-24 SAS1240 AAR → CPH May 24, 04:20 UTCMay 24, 04:45 UTC25m
2026-05-23 SAS1273 CPH → AAR May 23, 21:20 UTCMay 23, 21:45 UTC25m
2026-05-23 SAS57R MUC → CPH May 23, 18:25 UTCMay 23, 19:40 UTC1h 15m
2026-05-23 SAS2657 CPH → MUC May 23, 16:15 UTCMay 23, 17:30 UTC1h 15m
2026-05-23 SAS1622 DUS → CPH May 23, 13:45 UTCMay 23, 14:40 UTC55m

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-FPW page for operator, model, and routing details .

Mode-S 4CAF94 frequently asked

What is Mode-S code 4CAF94?
4CAF94 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-FPW.
Where is Mode-S 4CAF94 registered?
Mode-S code 4CAF94 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAF94 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAF94, octal 23127624, decimal 5,025,684.
What flights does 4CAF94 operate?
Mode-S 4CAF94 has broadcast 20 distinct callsigns, including SAS2498, SAS2497, SAS30U, SAS84P, SAS41T.