Apparatus

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sensors Mode-S transponder

48B931

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-OKS · CESSNA 172 Skyhawk

Hex
48B931
Octal
22134461
Decimal
4,766,001
Country
PL
Tail
SP-OKS
Type
C172
No current signal · last broadcast 4d ago
Flights observed
98
Distinct callsigns
1
Country
PL
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 48B931.

Country allocation

The ICAO 24-bit address 48B931 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 1 distinct

Callsign Airline Flights Last seen
SPOKS - 98 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SPOKS - Jul 26, 08:25 UTCJul 26, 08:40 UTC15m
2026-07-26 SPOKS - Jul 26, 07:20 UTCJul 26, 07:45 UTC25m
2026-07-25 SPOKS - Jul 25, 16:50 UTCJul 25, 18:20 UTC1h 30m
2026-07-25 SPOKS - Jul 25, 14:45 UTCJul 25, 16:20 UTC1h 35m
2026-07-25 SPOKS - Jul 25, 12:15 UTCJul 25, 12:30 UTC15m
2026-07-25 SPOKS - Jul 25, 11:00 UTCJul 25, 11:20 UTC20m
2026-07-25 SPOKS - Jul 25, 08:55 UTCJul 25, 10:15 UTC1h 20m
2026-07-24 SPOKS - Jul 24, 18:30 UTCJul 24, 18:45 UTC15m
2026-07-24 SPOKS - Jul 24, 16:40 UTCJul 24, 17:30 UTC50m
2026-07-24 SPOKS - Jul 24, 15:35 UTCJul 24, 15:55 UTC20m
2026-07-24 SPOKS - Jul 24, 13:00 UTCJul 24, 13:25 UTC25m
2026-07-18 SPOKS - Jul 18, 18:10 UTCJul 18, 18:30 UTC20m
2026-07-18 SPOKS - Jul 18, 15:55 UTCJul 18, 17:00 UTC1h 5m
2026-07-18 SPOKS - Jul 18, 11:10 UTCJul 18, 11:20 UTC10m
2026-07-18 SPOKS - Jul 18, 10:20 UTCJul 18, 10:35 UTC15m
2026-07-18 SPOKS - Jul 18, 09:05 UTCJul 18, 09:30 UTC25m
2026-07-17 SPOKS - Jul 17, 17:40 UTCJul 17, 18:05 UTC25m
2026-07-17 SPOKS - Jul 17, 13:10 UTCJul 17, 14:24 UTC1h 15m
2026-07-16 SPOKS - Jul 16, 08:05 UTCJul 16, 09:00 UTC55m
2026-07-15 SPOKS - Jul 15, 17:35 UTCJul 15, 19:05 UTC1h 30m
2026-07-15 SPOKS - Jul 15, 16:40 UTCJul 15, 17:00 UTC20m
2026-07-15 SPOKS - Jul 15, 15:35 UTCJul 15, 15:55 UTC20m
2026-07-10 SPOKS - Jul 10, 09:30 UTCJul 10, 10:25 UTC55m
2026-07-09 SPOKS - Jul 9, 17:30 UTCJul 9, 18:25 UTC55m
2026-07-06 SPOKS - Jul 6, 17:00 UTCJul 6, 17:15 UTC15m
2026-07-06 SPOKS - Jul 6, 12:05 UTCJul 6, 13:10 UTC1h 5m
2026-07-05 SPOKS - Jul 5, 17:50 UTCJul 5, 18:30 UTC40m
2026-07-04 SPOKS - Jul 4, 06:45 UTCJul 4, 07:35 UTC50m
2026-07-03 SPOKS - Jul 3, 17:40 UTCJul 3, 18:20 UTC40m
2026-07-03 SPOKS - Jul 3, 16:30 UTCJul 3, 16:45 UTC15m
2026-07-03 SPOKS - Jul 3, 08:10 UTCJul 3, 09:30 UTC1h 20m
2026-06-28 SPOKS - Jun 28, 15:49 UTCJun 28, 16:19 UTC30m
2026-06-27 SPOKS - Jun 27, 06:59 UTCJun 27, 07:45 UTC45m
2026-06-26 SPOKS - Jun 26, 18:24 UTCJun 26, 18:44 UTC20m
2026-06-26 SPOKS - Jun 26, 15:54 UTCJun 26, 17:44 UTC1h 50m
2026-06-26 SPOKS - Jun 26, 14:44 UTCJun 26, 14:59 UTC15m
2026-06-24 SPOKS - Jun 24, 08:14 UTCJun 24, 08:35 UTC20m
2026-06-23 SPOKS - Jun 23, 18:39 UTCJun 23, 18:55 UTC15m
2026-06-23 SPOKS - Jun 23, 17:34 UTCJun 23, 18:04 UTC30m
2026-06-22 SPOKS - Jun 22, 18:04 UTCJun 22, 18:24 UTC20m
2026-06-22 SPOKS - Jun 22, 12:05 UTCJun 22, 12:30 UTC25m
2026-06-20 SPOKS - Jun 20, 10:04 UTCJun 20, 10:55 UTC50m
2026-06-20 SPOKS - Jun 20, 05:39 UTCJun 20, 08:44 UTC3h 5m
2026-06-19 SPOKS - Jun 19, 09:24 UTCJun 19, 12:34 UTC3h 10m
2026-06-19 SPOKS - Jun 19, 04:19 UTCJun 19, 04:34 UTC15m
2026-06-18 SPOKS - Jun 18, 07:10 UTCJun 18, 08:00 UTC50m
2026-06-16 SPOKS - Jun 16, 18:35 UTCJun 16, 18:50 UTC15m
2026-06-16 SPOKS - Jun 16, 17:19 UTCJun 16, 17:45 UTC25m
2026-06-15 SPOKS - Jun 15, 18:15 UTCJun 15, 18:35 UTC20m
2026-06-12 SPOKS - Jun 12, 12:05 UTCJun 12, 12:35 UTC30m

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

Mode-S 48B931 frequently asked

What is Mode-S code 48B931?
48B931 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-OKS.
Where is Mode-S 48B931 registered?
Mode-S code 48B931 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48B931 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 48B931, octal 22134461, decimal 4,766,001.
What flights does 48B931 operate?
Mode-S 48B931 has broadcast 1 distinct callsign, including SPOKS.