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sensors Mode-S transponder

4CAF13

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAF13
Octal
23127423
Decimal
5,025,555
Country
IE
Tail
EI-HSC
Type
CRJ9
No current signal · last broadcast Jul 26, 22:35 UTC
Flights observed
392
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:35 UTC

Last known position

Most recent position reported by Mode-S 4CAF13.

Country allocation

The ICAO 24-bit address 4CAF13 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
SAS87R - 8 2026-07-18
SAS34J - 8 2026-07-18
SAS75G - 7 2026-07-14
SAS743 - 7 2026-07-17
SAS44T - 7 2026-07-14
SAS99A Scandinavian Airlines System 6 2026-07-17
SAS753 - 6 2026-07-07
SAS68H - 6 2026-07-17
SAS613 - 6 2026-07-01
SAS22P - 6 2026-07-01
SAS1758 - 6 2026-07-08
SAS1644 Scandinavian Airlines System 6 2026-07-26
SAS1643 - 6 2026-07-25
SAS1642 Scandinavian Airlines System 6 2026-07-25
SAS1645 - 5 2026-07-14
SAS745 Scandinavian Airlines System 4 2026-06-08
SAS742 - 4 2026-07-16
SAS73C Scandinavian Airlines System 4 2026-07-03
SAS684 Scandinavian Airlines System 4 2026-07-19
SAS683 - 4 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS1644 CPH → RIX Jul 26, 21:35 UTCJul 26, 22:35 UTC1h 0m
2026-07-26 SAS1656 STR → CPH Jul 26, 18:15 UTCJul 26, 19:30 UTC1h 15m
2026-07-26 SAS89L - Jul 26, 16:10 UTCJul 26, 17:20 UTC1h 10m
2026-07-26 SAS1713 HEL → CPH Jul 26, 13:15 UTCJul 26, 14:35 UTC1h 20m
2026-07-26 SAS1712 CPH → HEL Jul 26, 11:00 UTCJul 26, 12:15 UTC1h 15m
2026-07-26 SAS1694 VIE → CPH Jul 26, 08:25 UTCJul 26, 09:45 UTC1h 20m
2026-07-26 SAS1693 CPH → VIE Jul 26, 06:00 UTCJul 26, 07:15 UTC1h 16m
2026-07-25 SAS48D AMS → CPH Jul 25, 17:10 UTCJul 25, 18:05 UTC55m
2026-07-25 SAS1549 CPH → AMS Jul 25, 15:00 UTCJul 25, 16:05 UTC1h 5m
2026-07-25 SAS1643 - Jul 25, 12:55 UTCJul 25, 14:05 UTC1h 10m
2026-07-25 SAS1642 CPH → RIX Jul 25, 11:05 UTCJul 25, 12:05 UTC1h 0m
2026-07-25 SAS594 BRU → CPH Jul 25, 08:30 UTCJul 25, 09:40 UTC1h 10m
2026-07-25 SAS57B CPH → BRU Jul 25, 06:10 UTCJul 25, 07:15 UTC1h 5m
2026-07-25 SAS84P TLL → CPH Jul 25, 03:20 UTCJul 25, 04:35 UTC1h 15m
2026-07-24 SAS1772 ARN → TLL Jul 24, 19:55 UTCJul 24, 20:30 UTC35m
2026-07-24 SAS1482 BGO → ARN Jul 24, 17:50 UTCJul 24, 18:50 UTC1h 0m
2026-07-24 SAS1481 ARN → BGO Jul 24, 15:50 UTCJul 24, 17:00 UTC1h 10m
2026-07-24 SAS82T TLL → ARN Jul 24, 14:20 UTCJul 24, 15:00 UTC40m
2026-07-24 SAS40L ARN → TLL Jul 24, 12:45 UTCJul 24, 13:25 UTC40m
2026-07-24 SAS72C MXP → CPH Jul 24, 09:30 UTCJul 24, 11:10 UTC1h 40m
2026-07-24 SAS1553 ARN → AMS Jul 24, 06:45 UTCJul 24, 08:20 UTC1h 35m
2026-07-24 SAS025 UME → ARN Jul 24, 04:20 UTCJul 24, 05:00 UTC40m
2026-07-23 SAS026 ARN → UME Jul 23, 19:30 UTCJul 23, 20:10 UTC40m
2026-07-23 SAS1482 BGO → ARN Jul 23, 17:40 UTCJul 23, 18:45 UTC1h 5m
2026-07-23 SAS1481 ARN → BGO Jul 23, 15:55 UTCJul 23, 17:00 UTC1h 5m
2026-07-23 SAS82T TLL → ARN Jul 23, 14:20 UTCJul 23, 15:00 UTC40m
2026-07-23 SAS40L ARN → TLL Jul 23, 12:45 UTCJul 23, 13:30 UTC45m
2026-07-23 SAS088 VBY → ARN Jul 23, 10:40 UTCJul 23, 11:05 UTC25m
2026-07-23 SAS087 - Jul 23, 09:15 UTCJul 23, 09:40 UTC25m
2026-07-23 SAS2023 UME → ARN Jul 23, 07:25 UTCJul 23, 08:05 UTC40m
2026-07-23 SAS024 ARN → UME Jul 23, 05:50 UTCJul 23, 06:25 UTC35m
2026-07-22 SAS1482 BGO → ARN Jul 22, 18:45 UTCJul 22, 19:50 UTC1h 5m
2026-07-22 SAS1481 ARN → BGO Jul 22, 16:55 UTCJul 22, 18:00 UTC1h 5m
2026-07-22 SAS46D TRD → ARN Jul 22, 15:00 UTCJul 22, 16:00 UTC1h 0m
2026-07-22 SAS47K ARN → TRD Jul 22, 13:25 UTCJul 22, 14:20 UTC55m
2026-07-22 SAS30P - Jul 22, 11:10 UTCJul 22, 12:10 UTC1h 0m
2026-07-21 SAS1484 OSL → ARN Jul 21, 20:30 UTCJul 21, 21:30 UTC1h 0m
2026-07-21 SAS1483 ARN → OSL Jul 21, 18:10 UTCJul 21, 18:50 UTC40m
2026-07-21 SAS79E BER → ARN Jul 21, 15:55 UTCJul 21, 17:15 UTC1h 20m
2026-07-21 SAS95W ARN → BER Jul 21, 13:25 UTCJul 21, 14:35 UTC1h 10m
2026-07-21 SAS30P - Jul 21, 11:25 UTCJul 21, 12:25 UTC1h 0m
2026-07-21 SAS69H - Jul 21, 09:40 UTCJul 21, 10:35 UTC55m
2026-07-21 SAS81C - Jul 21, 07:45 UTCJul 21, 08:40 UTC55m
2026-07-21 SAS69N ARN → SFT Jul 21, 06:05 UTCJul 21, 06:55 UTC50m
2026-07-20 SAS1410 CPH → ARN Jul 20, 19:40 UTCJul 20, 20:35 UTC55m
2026-07-20 SAS2867 BGO → CPH Jul 20, 11:20 UTCJul 20, 12:20 UTC1h 0m
2026-07-20 SAS2866 CPH → BGO Jul 20, 09:35 UTCJul 20, 10:35 UTC1h 0m
2026-07-20 SAS21M - Jul 20, 07:50 UTCJul 20, 08:20 UTC30m
2026-07-20 SAS1641 CPH → HAM Jul 20, 06:30 UTCJul 20, 07:00 UTC30m
2026-07-20 SAS1705 HEL → CPH Jul 20, 03:40 UTCJul 20, 05:15 UTC1h 35m

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

Mode-S 4CAF13 frequently asked

What is Mode-S code 4CAF13?
4CAF13 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HSC.
Where is Mode-S 4CAF13 registered?
Mode-S code 4CAF13 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAF13 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAF13, octal 23127423, decimal 5,025,555.
What flights does 4CAF13 operate?
Mode-S 4CAF13 has broadcast 20 distinct callsigns, including SAS87R, SAS34J, SAS75G, SAS743, SAS44T.