Apparatus

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sensors Mode-S transponder

48C5E5

ICAO 24-bit transponder address · allocated to Poland

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

Hex
48C5E5
Octal
22142745
Decimal
4,769,253
Country
PL
Tail
SP-SPF
Type
AT75
No current signal · last broadcast 1d ago
Flights observed
3
Distinct callsigns
2
Country
PL
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 48C5E5.

Country allocation

The ICAO 24-bit address 48C5E5 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 2 distinct

Callsign Airline Flights Last seen
SAR1981 Sprintair 2 2026-04-13
SAR1980 - 1 2026-04-13

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-13 SAR1981 KTW → CGN Apr 13, 19:50 UTCApr 13, 21:30 UTC1h 40m
2026-04-13 SAR1981 KTW → CGN Apr 13, 19:35 UTCApr 13, 19:45 UTC10m
2026-04-13 SAR1980 - Apr 13, 01:55 UTCApr 13, 03:50 UTC1h 55m

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

Mode-S 48C5E5 frequently asked

What is Mode-S code 48C5E5?
48C5E5 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-SPF.
Where is Mode-S 48C5E5 registered?
Mode-S code 48C5E5 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C5E5 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C5E5, octal 22142745, decimal 4,769,253.
What flights does 48C5E5 operate?
Mode-S 48C5E5 has broadcast 2 distinct callsigns, including SAR1981, SAR1980.