Apparatus

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sensors Mode-S transponder

48C587

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-SMH · ROBINSON R-44 Raven

Hex
48C587
Octal
22142607
Decimal
4,769,159
Country
PL
Tail
SP-SMH
Type
R44
No current signal · last broadcast 19h ago
Flights observed
48
Distinct callsigns
1
Country
PL
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 48C587.

Country allocation

The ICAO 24-bit address 48C587 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
SPSMH - 48 2026-06-02

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
2026-06-02 SPSMH - Jun 2, 17:10 UTCJun 2, 17:15 UTC5m
2026-06-02 SPSMH - Jun 2, 16:25 UTCJun 2, 16:45 UTC20m
2026-06-02 SPSMH - Jun 2, 16:10 UTCJun 2, 16:15 UTC5m
2026-06-02 SPSMH - Jun 2, 13:55 UTCJun 2, 14:10 UTC15m
2026-06-02 SPSMH - Jun 2, 13:35 UTCJun 2, 13:45 UTC10m
2026-06-02 SPSMH - Jun 2, 13:20 UTCJun 2, 13:25 UTC5m
2026-06-02 SPSMH - Jun 2, 13:00 UTCJun 2, 13:05 UTC5m
2026-06-01 SPSMH - Jun 1, 16:25 UTCJun 1, 16:30 UTC5m
2026-06-01 SPSMH - Jun 1, 15:55 UTCJun 1, 16:05 UTC10m
2026-06-01 SPSMH - Jun 1, 15:35 UTCJun 1, 15:50 UTC15m
2026-06-01 SPSMH - Jun 1, 11:05 UTCJun 1, 11:15 UTC10m
2026-06-01 SPSMH - Jun 1, 09:50 UTCJun 1, 10:15 UTC25m
2026-06-01 SPSMH - Jun 1, 09:30 UTCJun 1, 09:40 UTC10m
2026-05-28 SPSMH - May 28, 16:55 UTCMay 28, 17:15 UTC20m
2026-05-28 SPSMH - May 28, 16:05 UTCMay 28, 16:15 UTC10m
2026-05-28 SPSMH - May 28, 15:45 UTCMay 28, 15:50 UTC5m
2026-05-28 SPSMH - May 28, 15:20 UTCMay 28, 15:25 UTC5m
2026-05-27 SPSMH - May 27, 12:50 UTCMay 27, 13:50 UTC1h 0m
2026-05-25 SPSMH - May 25, 16:40 UTCMay 25, 17:10 UTC30m
2026-05-25 SPSMH - May 25, 15:40 UTCMay 25, 16:05 UTC25m
2026-05-25 SPSMH - May 25, 15:15 UTCMay 25, 15:25 UTC10m
2026-05-25 SPSMH - May 25, 15:05 UTCMay 25, 15:10 UTC5m
2026-05-18 SPSMH - May 18, 17:25 UTCMay 18, 17:35 UTC10m
2026-05-18 SPSMH POZ → POZ May 18, 16:00 UTCMay 18, 17:20 UTC1h 20m
2026-05-18 SPSMH - May 18, 14:30 UTCMay 18, 15:00 UTC30m
2026-05-18 SPSMH - May 18, 13:05 UTCMay 18, 13:40 UTC35m
2026-05-09 SPSMH - May 9, 17:15 UTCMay 9, 17:25 UTC10m
2026-05-09 SPSMH - May 9, 15:45 UTCMay 9, 15:55 UTC10m
2026-05-09 SPSMH - May 9, 15:30 UTCMay 9, 15:35 UTC5m
2026-04-22 SPSMH - Apr 22, 13:15 UTCApr 22, 13:30 UTC15m
2026-04-22 SPSMH - Apr 22, 12:50 UTCApr 22, 12:55 UTC5m
2026-04-22 SPSMH - Apr 22, 11:40 UTCApr 22, 11:50 UTC10m
2026-04-22 SPSMH - Apr 22, 11:15 UTCApr 22, 11:35 UTC20m
2026-04-22 SPSMH - Apr 22, 11:00 UTCApr 22, 11:10 UTC10m
2026-04-21 SPSMH - Apr 21, 11:30 UTCApr 21, 12:15 UTC45m
2026-04-21 SPSMH - Apr 21, 09:55 UTCApr 21, 10:35 UTC40m
2026-04-20 SPSMH - Apr 20, 15:15 UTCApr 20, 15:25 UTC10m
2026-04-20 SPSMH - Apr 20, 14:55 UTCApr 20, 15:10 UTC15m
2026-04-20 SPSMH - Apr 20, 14:40 UTCApr 20, 14:45 UTC5m
2026-04-20 SPSMH - Apr 20, 13:20 UTCApr 20, 13:30 UTC10m
2026-04-20 SPSMH - Apr 20, 13:00 UTCApr 20, 13:05 UTC5m
2026-04-20 SPSMH - Apr 20, 12:40 UTCApr 20, 12:45 UTC5m
2026-04-19 SPSMH - Apr 19, 10:30 UTCApr 19, 10:45 UTC15m
2026-04-19 SPSMH - Apr 19, 09:20 UTCApr 19, 09:25 UTC5m
2026-04-19 SPSMH - Apr 19, 09:00 UTCApr 19, 09:05 UTC5m
2026-04-18 SPSMH - Apr 18, 16:55 UTCApr 18, 17:00 UTC5m
2026-04-18 SPSMH - Apr 18, 15:45 UTCApr 18, 15:50 UTC5m
2026-04-18 SPSMH - Apr 18, 15:10 UTCApr 18, 15:15 UTC5m

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

Mode-S 48C587 frequently asked

What is Mode-S code 48C587?
48C587 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-SMH.
Where is Mode-S 48C587 registered?
Mode-S code 48C587 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C587 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C587, octal 22142607, decimal 4,769,159.
What flights does 48C587 operate?
Mode-S 48C587 has broadcast 1 distinct callsign, including SPSMH.