Apparatus

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sensors Mode-S transponder

48C5F9

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-SPQ · ATR-72-500

Hex
48C5F9
Octal
22142771
Decimal
4,769,273
Country
PL
Tail
SP-SPQ
Type
AT75
No current signal · last broadcast 3h ago
Flights observed
74
Distinct callsigns
11
Country
PL
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 48C5F9.

Country allocation

The ICAO 24-bit address 48C5F9 falls within the block assigned to Poland (PL) by ICAO Annex 10, Volume III. Every aircraft registered in Poland 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 11 distinct

Callsign Airline Flights Last seen
SRN4910 - 22 2026-05-20
SRN4913 - 21 2026-05-20
SAR1922 Sprintair 7 2026-05-29
SAR1921 Sprintair 7 2026-05-29
SRN4911 - 5 2026-05-16
SRN4906 - 5 2026-05-17
SRN760P - 2 2026-04-14
SAR1976 - 2 2026-04-13
SRN833 - 1 2026-05-20
SRN702 - 1 2026-05-14
SAR1975 - 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SAR1921 LJU → CGN May 29, 19:55 UTCMay 29, 22:00 UTC2h 5m
2026-05-29 SAR1922 CGN → LJU May 29, 02:35 UTCMay 29, 04:20 UTC1h 45m
2026-05-28 SAR1921 LJU → CGN May 28, 19:40 UTCMay 28, 21:45 UTC2h 5m
2026-05-28 SAR1922 CGN → LJU May 28, 02:40 UTCMay 28, 04:30 UTC1h 50m
2026-05-27 SAR1921 LJU → CGN May 27, 19:55 UTCMay 27, 21:50 UTC1h 55m
2026-05-27 SAR1922 CGN → LJU May 27, 02:49 UTCMay 27, 04:34 UTC1h 45m
2026-05-26 SAR1921 LJU → CGN May 26, 19:55 UTCMay 26, 21:44 UTC1h 50m
2026-05-26 SAR1922 CGN → LJU May 26, 02:24 UTCMay 26, 04:04 UTC1h 40m
2026-05-25 SAR1921 LJU → CGN May 25, 19:44 UTCMay 25, 21:40 UTC1h 55m
2026-05-25 SAR1922 CGN → LJU May 25, 02:10 UTCMay 25, 03:55 UTC1h 45m
2026-05-22 SAR1921 LJU → CGN May 22, 20:10 UTCMay 22, 22:05 UTC1h 55m
2026-05-22 SAR1922 CGN → LJU May 22, 02:20 UTCMay 22, 04:10 UTC1h 50m
2026-05-21 SAR1921 LJU → CGN May 21, 20:00 UTCMay 21, 21:55 UTC1h 55m
2026-05-21 SAR1922 CGN → LJU May 21, 03:10 UTCMay 21, 04:55 UTC1h 45m
2026-05-20 SRN833 LEJ → CGN May 20, 23:05 UTCMay 21, 00:00 UTC55m
2026-05-20 SRN4913 - May 20, 19:30 UTCMay 20, 21:05 UTC1h 35m
2026-05-20 SRN4910 - May 20, 03:10 UTCMay 20, 04:35 UTC1h 25m
2026-05-19 SRN4913 - May 19, 19:25 UTCMay 19, 20:50 UTC1h 25m
2026-05-19 SRN4910 LEJ → BSL May 19, 02:20 UTCMay 19, 03:50 UTC1h 30m
2026-05-18 SRN4913 - May 18, 19:40 UTCMay 18, 21:00 UTC1h 20m
2026-05-17 SRN4906 - May 17, 17:40 UTCMay 17, 19:05 UTC1h 25m
2026-05-16 SRN4911 - May 16, 18:20 UTCMay 16, 19:45 UTC1h 25m
2026-05-15 SRN4910 LEJ → BSL May 15, 04:00 UTCMay 15, 05:25 UTC1h 25m
2026-05-14 SRN702 - May 14, 08:15 UTCMay 14, 09:25 UTC1h 10m
2026-05-14 SRN4910 LEJ → BSL May 14, 04:40 UTCMay 14, 06:15 UTC1h 35m
2026-05-13 SRN4913 - May 13, 19:35 UTCMay 13, 20:50 UTC1h 15m
2026-05-13 SRN4910 LEJ → BSL May 13, 04:10 UTCMay 13, 05:40 UTC1h 30m
2026-05-12 SRN4913 BSL → LEJ May 12, 19:45 UTCMay 12, 21:15 UTC1h 30m
2026-05-12 SRN4910 LEJ → BSL May 12, 04:05 UTCMay 12, 05:25 UTC1h 20m
2026-05-11 SRN4913 - May 11, 19:25 UTCMay 11, 20:35 UTC1h 10m
2026-05-11 SRN4906 LEJ → BSL May 11, 02:25 UTCMay 11, 04:05 UTC1h 40m
2026-05-09 SRN4911 - May 9, 18:25 UTCMay 9, 19:45 UTC1h 20m
2026-05-08 SRN4910 LEJ → BSL May 8, 04:29 UTCMay 8, 08:05 UTC3h 35m
2026-05-07 SRN4913 - May 7, 19:35 UTCMay 7, 20:55 UTC1h 20m
2026-05-07 SRN4910 LEJ → BSL May 7, 04:40 UTCMay 7, 06:10 UTC1h 30m
2026-05-06 SRN4913 - May 6, 19:25 UTCMay 6, 20:40 UTC1h 15m
2026-05-06 SRN4910 LEJ → BSL May 6, 04:10 UTCMay 6, 05:50 UTC1h 40m
2026-05-05 SRN4913 - May 5, 20:01 UTCMay 5, 21:15 UTC1h 15m
2026-05-05 SRN4910 LEJ → BSL May 5, 04:00 UTCMay 5, 05:40 UTC1h 40m
2026-05-04 SRN4913 - May 4, 19:30 UTCMay 4, 20:50 UTC1h 20m
2026-05-04 SRN4906 LEJ → BSL May 4, 01:44 UTCMay 4, 03:15 UTC1h 30m
2026-05-02 SRN4911 BSL → LEJ May 2, 18:30 UTCMay 2, 19:45 UTC1h 15m
2026-05-01 SRN4910 LEJ → BSL May 1, 04:05 UTCMay 1, 05:20 UTC1h 15m
2026-04-30 SRN4913 - Apr 30, 19:35 UTCApr 30, 20:50 UTC1h 15m
2026-04-30 SRN4910 LEJ → BSL Apr 30, 04:10 UTCApr 30, 05:25 UTC1h 15m
2026-04-29 SRN4913 - Apr 29, 21:05 UTCApr 29, 22:35 UTC1h 30m
2026-04-29 SRN4910 LEJ → BSL Apr 29, 04:34 UTCApr 29, 05:50 UTC1h 15m
2026-04-28 SRN4913 - Apr 28, 19:30 UTCApr 28, 20:45 UTC1h 15m
2026-04-28 SRN4910 LEJ → BSL Apr 28, 04:10 UTCApr 28, 05:45 UTC1h 35m
2026-04-27 SRN4913 - Apr 27, 19:25 UTCApr 27, 20:50 UTC1h 25m

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 SP-SPQ page for operator, model, and routing details .

Mode-S 48C5F9 frequently asked

What is Mode-S code 48C5F9?
48C5F9 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-SPQ.
Where is Mode-S 48C5F9 registered?
Mode-S code 48C5F9 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C5F9 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C5F9, octal 22142771, decimal 4,769,273.
What flights does 48C5F9 operate?
Mode-S 48C5F9 has broadcast 11 distinct callsigns, including SRN4910, SRN4913, SAR1922, SAR1921, SRN4911.