Apparatus

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sensors Mode-S transponder

48A5E9

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-KPK · SAAB 340

Hex
48A5E9
Octal
22122751
Decimal
4,761,065
Country
PL
Tail
SP-KPK
Type
SF34
No current signal · last broadcast 11h ago
Flights observed
66
Distinct callsigns
4
Country
PL
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 48A5E9.

Country allocation

The ICAO 24-bit address 48A5E9 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 4 distinct

Callsign Airline Flights Last seen
SRN3150 Sirair 21 2026-05-08
SRN3151 Sirair 19 2026-05-08
SRN3273 Sirair 13 2026-05-29
SRN3272 Sirair 13 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SRN3273 AES → CPH May 29, 16:40 UTCMay 29, 18:35 UTC1h 55m
2026-05-29 SRN3272 CPH → AES May 29, 05:35 UTCMay 29, 07:40 UTC2h 5m
2026-05-28 SRN3273 AES → CPH May 28, 16:35 UTCMay 28, 18:10 UTC1h 35m
2026-05-28 SRN3272 CPH → AES May 28, 05:35 UTCMay 28, 07:55 UTC2h 20m
2026-05-27 SRN3273 AES → CPH May 27, 16:35 UTCMay 27, 18:15 UTC1h 40m
2026-05-27 SRN3272 CPH → AES May 27, 05:40 UTCMay 27, 08:15 UTC2h 35m
2026-05-26 SRN3273 AES → CPH May 26, 16:45 UTCMay 26, 18:24 UTC1h 40m
2026-05-26 SRN3272 CPH → AES May 26, 05:30 UTCMay 26, 07:55 UTC2h 25m
2026-05-22 SRN3273 AES → CPH May 22, 16:35 UTCMay 22, 18:25 UTC1h 50m
2026-05-22 SRN3272 CPH → AES May 22, 05:40 UTCMay 22, 07:50 UTC2h 10m
2026-05-21 SRN3273 AES → CPH May 21, 16:30 UTCMay 21, 18:10 UTC1h 40m
2026-05-21 SRN3272 CPH → AES May 21, 05:50 UTCMay 21, 07:50 UTC2h 0m
2026-05-20 SRN3273 AES → CPH May 20, 16:45 UTCMay 20, 18:45 UTC2h 0m
2026-05-20 SRN3272 CPH → AES May 20, 05:35 UTCMay 20, 07:25 UTC1h 50m
2026-05-19 SRN3273 AES → CPH May 19, 16:35 UTCMay 19, 18:35 UTC2h 0m
2026-05-19 SRN3272 CPH → AES May 19, 05:35 UTCMay 19, 07:20 UTC1h 45m
2026-05-18 SRN3273 AES → CPH May 18, 16:30 UTCMay 18, 18:35 UTC2h 4m
2026-05-18 SRN3272 CPH → AES May 18, 04:11 UTCMay 18, 05:50 UTC1h 40m
2026-05-15 SRN3273 AES → CPH May 15, 16:35 UTCMay 15, 18:40 UTC2h 5m
2026-05-15 SRN3272 CPH → AES May 15, 05:35 UTCMay 15, 07:20 UTC1h 45m
2026-05-13 SRN3273 AES → CPH May 13, 16:50 UTCMay 13, 18:55 UTC2h 5m
2026-05-13 SRN3272 CPH → AES May 13, 05:40 UTCMay 13, 07:25 UTC1h 45m
2026-05-12 SRN3273 AES → CPH May 12, 16:30 UTCMay 12, 18:30 UTC2h 0m
2026-05-12 SRN3272 CPH → AES May 12, 05:40 UTCMay 12, 07:40 UTC2h 0m
2026-05-11 SRN3273 AES → CPH May 11, 16:40 UTCMay 11, 18:50 UTC2h 11m
2026-05-11 SRN3272 CPH → AES May 11, 04:10 UTCMay 11, 06:10 UTC2h 0m
2026-05-08 SRN3151 KRS → CPH May 8, 18:00 UTCMay 8, 19:05 UTC1h 5m
2026-05-08 SRN3150 CPH → KRS May 8, 05:29 UTCMay 8, 06:35 UTC1h 5m
2026-05-07 SRN3151 KRS → CPH May 7, 17:55 UTCMay 7, 18:55 UTC1h 0m
2026-05-07 SRN3150 CPH → KRS May 7, 05:45 UTCMay 7, 06:50 UTC1h 5m
2026-05-06 SRN3151 KRS → CPH May 6, 18:05 UTCMay 6, 19:00 UTC55m
2026-05-06 SRN3150 CPH → KRS May 6, 05:30 UTCMay 6, 06:30 UTC1h 0m
2026-05-05 SRN3151 KRS → CPH May 5, 18:10 UTCMay 5, 19:10 UTC1h 0m
2026-05-05 SRN3150 CPH → KRS May 5, 05:35 UTCMay 5, 06:45 UTC1h 10m
2026-05-04 SRN3151 KRS → CPH May 4, 17:45 UTCMay 4, 18:40 UTC56m
2026-05-04 SRN3150 CPH → KRS May 4, 03:40 UTCMay 4, 04:44 UTC1h 5m
2026-04-30 SRN3151 KRS → CPH Apr 30, 17:55 UTCApr 30, 18:55 UTC1h 0m
2026-04-30 SRN3150 CPH → KRS Apr 30, 05:40 UTCApr 30, 06:40 UTC1h 0m
2026-04-29 SRN3151 KRS → CPH Apr 29, 17:45 UTCApr 29, 18:45 UTC1h 0m
2026-04-29 SRN3150 CPH → KRS Apr 29, 05:45 UTCApr 29, 06:49 UTC1h 5m
2026-04-28 SRN3151 KRS → CPH Apr 28, 17:45 UTCApr 28, 18:40 UTC55m
2026-04-28 SRN3150 CPH → KRS Apr 28, 05:40 UTCApr 28, 06:45 UTC1h 5m
2026-04-27 SRN3151 KRS → CPH Apr 27, 18:00 UTCApr 27, 19:00 UTC1h 0m
2026-04-27 SRN3150 CPH → KRS Apr 27, 03:40 UTCApr 27, 04:50 UTC1h 10m
2026-04-24 SRN3151 KRS → CPH Apr 24, 17:55 UTCApr 24, 18:55 UTC1h 0m
2026-04-24 SRN3150 CPH → KRS Apr 24, 05:30 UTCApr 24, 06:40 UTC1h 10m
2026-04-23 SRN3151 KRS → CPH Apr 23, 18:15 UTCApr 23, 19:10 UTC55m
2026-04-23 SRN3150 CPH → KRS Apr 23, 05:40 UTCApr 23, 06:45 UTC1h 5m
2026-04-22 SRN3151 KRS → CPH Apr 22, 18:15 UTCApr 22, 19:15 UTC1h 0m
2026-04-22 SRN3150 CPH → KRS Apr 22, 05:50 UTCApr 22, 07:00 UTC1h 10m

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

Mode-S 48A5E9 frequently asked

What is Mode-S code 48A5E9?
48A5E9 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-KPK.
Where is Mode-S 48A5E9 registered?
Mode-S code 48A5E9 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48A5E9 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48A5E9, octal 22122751, decimal 4,761,065.
What flights does 48A5E9 operate?
Mode-S 48A5E9 has broadcast 4 distinct callsigns, including SRN3150, SRN3151, SRN3273, SRN3272.