Apparatus

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sensors Mode-S transponder

506CA3

ICAO 24-bit transponder address · allocated to Slovenia

Currently assigned to S5-BBC · CESSNA 560XL Citation XLS

Hex
506CA3
Octal
24066243
Decimal
5,270,691
Country
SI
Tail
S5-BBC
Type
C56X
No current signal · last broadcast 4d ago
Flights observed
134
Distinct callsigns
3
Country
SI
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 506CA3.

Country allocation

The ICAO 24-bit address 506CA3 falls within the block assigned to Slovenia (SI) by ICAO Annex 10, Volume III. Every aircraft registered in Slovenia 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 3 distinct

Callsign Airline Flights Last seen
RMB1 - 110 2026-07-10
RMB3 - 13 2026-05-29
RMB2 - 11 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 RMB1 - Jul 10, 11:50 UTCJul 10, 15:45 UTC3h 55m
2026-07-09 RMB1 - Jul 9, 11:30 UTCJul 9, 12:55 UTC1h 25m
2026-07-09 RMB1 - Jul 9, 07:40 UTCJul 9, 10:20 UTC2h 40m
2026-07-07 RMB1 - Jul 7, 17:00 UTCJul 7, 17:35 UTC35m
2026-07-07 RMB1 TBS → RMI Jul 7, 11:50 UTCJul 7, 16:15 UTC4h 25m
2026-07-06 RMB1 TBS → TBS Jul 6, 13:15 UTCJul 7, 10:40 UTC21h 25m
2026-07-06 RMB1 - Jul 6, 09:00 UTCJul 6, 12:35 UTC3h 35m
2026-07-05 RMB1 - Jul 5, 12:20 UTCJul 5, 16:10 UTC3h 50m
2026-07-04 RMB1 - Jul 4, 22:30 UTCJul 5, 00:25 UTC1h 55m
2026-07-04 RMB1 - Jul 4, 19:45 UTCJul 4, 21:15 UTC1h 30m
2026-07-04 RMB1 GVA → BEG Jul 4, 16:45 UTCJul 4, 18:20 UTC1h 35m
2026-07-03 RMB2 - Jul 3, 18:00 UTCJul 3, 21:05 UTC3h 5m
2026-07-02 RMB2 ATH → ISL Jul 2, 15:35 UTCJul 2, 16:25 UTC50m
2026-07-02 RMB2 - Jul 2, 13:10 UTCJul 2, 14:15 UTC1h 5m
2026-07-02 RMB2 NCE → ISL Jul 2, 09:00 UTCJul 2, 11:30 UTC2h 30m
2026-07-01 RMB1 BQH → NCE Jul 1, 13:25 UTCJul 1, 14:55 UTC1h 30m
2026-07-01 RMB1 LBA → BQH Jul 1, 10:40 UTCJul 1, 11:35 UTC55m
2026-06-29 RMB1 PRG → LBA Jun 29, 11:29 UTCJun 29, 13:19 UTC1h 50m
2026-06-29 RMB1 - Jun 29, 08:19 UTCJun 29, 10:00 UTC1h 40m
2026-06-28 RMB1 - Jun 28, 15:29 UTCJun 28, 17:10 UTC1h 40m
2026-06-28 RMB1 NCE → TLN Jun 28, 12:19 UTCJun 28, 12:35 UTC15m
2026-06-28 RMB1 - Jun 28, 09:55 UTCJun 28, 10:50 UTC55m
2026-06-28 RMB1 NCE → VCE Jun 28, 07:09 UTCJun 28, 07:54 UTC45m
2026-06-27 RMB1 - Jun 27, 16:24 UTCJun 27, 17:14 UTC50m
2026-06-27 RMB1 - Jun 27, 12:09 UTCJun 27, 12:34 UTC25m
2026-06-27 RMB1 - Jun 27, 09:29 UTCJun 27, 10:29 UTC1h 0m
2026-06-26 RMB1 - Jun 26, 10:35 UTCJun 26, 11:20 UTC45m
2026-06-25 RMB1 SOU → NCE Jun 25, 21:35 UTCJun 25, 23:14 UTC1h 40m
2026-06-25 RMB1 RKV → SOU Jun 25, 15:34 UTCJun 25, 18:29 UTC2h 55m
2026-06-23 RMB1 - Jun 23, 10:49 UTCJun 23, 13:05 UTC2h 15m
2026-06-23 RMB1 SOU → DUB Jun 23, 09:20 UTCJun 23, 10:10 UTC50m
2026-06-23 RMB2 - Jun 23, 07:45 UTCJun 23, 08:15 UTC30m
2026-06-22 RMB1 - Jun 22, 11:19 UTCJun 22, 12:49 UTC1h 30m
2026-06-22 RMB1 - Jun 22, 07:40 UTCJun 22, 07:54 UTC15m
2026-06-22 RMB1 - Jun 22, 03:30 UTCJun 22, 06:05 UTC2h 35m
2026-06-22 RMB1 - Jun 22, 01:29 UTCJun 22, 01:40 UTC10m
2026-06-20 RMB1 - Jun 20, 14:09 UTCJun 20, 17:24 UTC3h 15m
2026-06-20 RMB1 - Jun 20, 08:25 UTCJun 20, 11:09 UTC2h 45m
2026-06-19 RMB1 - Jun 19, 12:54 UTCJun 19, 15:04 UTC2h 10m
2026-06-19 RMB1 - Jun 19, 10:35 UTCJun 19, 11:45 UTC1h 10m
2026-06-18 RMB1 - Jun 18, 16:15 UTCJun 18, 17:50 UTC1h 35m
2026-06-17 RMB1 - Jun 17, 10:20 UTCJun 17, 14:45 UTC4h 25m
2026-06-17 RMB1 - Jun 17, 07:05 UTCJun 17, 08:30 UTC1h 25m
2026-06-16 RMB1 - Jun 16, 14:35 UTCJun 16, 15:40 UTC1h 5m
2026-06-16 RMB1 - Jun 16, 12:50 UTCJun 16, 13:44 UTC55m
2026-06-15 RMB1 - Jun 15, 17:30 UTCJun 15, 20:15 UTC2h 45m
2026-06-15 RMB1 - Jun 15, 15:25 UTCJun 15, 16:40 UTC1h 15m
2026-06-15 RMB1 - Jun 15, 10:55 UTCJun 15, 14:15 UTC3h 20m
2026-06-14 RMB1 - Jun 14, 20:00 UTCJun 14, 20:25 UTC25m
2026-06-14 RMB1 - Jun 14, 15:20 UTCJun 14, 18:40 UTC3h 20m

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 S5-BBC page for operator, model, and routing details .

Mode-S 506CA3 frequently asked

What is Mode-S code 506CA3?
506CA3 is an ICAO 24-bit transponder address. Allocated to Slovenia. Assigned to S5-BBC.
Where is Mode-S 506CA3 registered?
Mode-S code 506CA3 is allocated to Slovenia (SI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 506CA3 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 506CA3, octal 24066243, decimal 5,270,691.
What flights does 506CA3 operate?
Mode-S 506CA3 has broadcast 3 distinct callsigns, including RMB1, RMB3, RMB2.