Apparatus

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sensors Mode-S transponder

48EF21

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-LFP · TECNAM P-2006T

Hex
48EF21
Octal
22167441
Decimal
4,779,809
Country
PL
Tail
SP-LFP
Type
P06T
No current signal · last broadcast 6d ago
Flights observed
108
Distinct callsigns
1
Country
PL
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 48EF21.

Country allocation

The ICAO 24-bit address 48EF21 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
SPLFP - 108 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 SPLFP - Jul 8, 11:15 UTCJul 8, 13:55 UTC2h 40m
2026-07-08 SPLFP - Jul 8, 08:00 UTCJul 8, 09:45 UTC1h 45m
2026-07-07 SPLFP - Jul 7, 07:35 UTCJul 7, 08:30 UTC55m
2026-07-03 SPLFP - Jul 3, 15:55 UTCJul 3, 16:25 UTC30m
2026-07-02 SPLFP - Jul 2, 12:55 UTCJul 2, 15:35 UTC2h 40m
2026-07-02 SPLFP - Jul 2, 11:05 UTCJul 2, 12:20 UTC1h 15m
2026-07-02 SPLFP - Jul 2, 08:20 UTCJul 2, 09:30 UTC1h 10m
2026-07-02 SPLFP - Jul 2, 07:15 UTCJul 2, 07:35 UTC20m
2026-06-30 SPLFP - Jun 30, 11:30 UTCJun 30, 12:15 UTC45m
2026-06-30 SPLFP - Jun 30, 06:05 UTCJun 30, 08:05 UTC2h 0m
2026-06-29 SPLFP - Jun 29, 16:55 UTCJun 29, 17:49 UTC55m
2026-06-26 SPLFP - Jun 26, 14:05 UTCJun 26, 16:09 UTC2h 5m
2026-06-26 SPLFP - Jun 26, 11:34 UTCJun 26, 12:29 UTC55m
2026-06-26 SPLFP - Jun 26, 09:20 UTCJun 26, 10:05 UTC45m
2026-06-25 SPLFP - Jun 25, 13:35 UTCJun 25, 16:35 UTC3h 0m
2026-06-25 SPLFP - Jun 25, 12:19 UTCJun 25, 12:40 UTC20m
2026-06-25 SPLFP - Jun 25, 10:04 UTCJun 25, 11:35 UTC1h 30m
2026-06-25 SPLFP - Jun 25, 06:20 UTCJun 25, 08:55 UTC2h 35m
2026-06-24 SPLFP - Jun 24, 15:29 UTCJun 24, 18:25 UTC2h 55m
2026-06-24 SPLFP - Jun 24, 11:59 UTCJun 24, 14:34 UTC2h 35m
2026-06-24 SPLFP - Jun 24, 07:59 UTCJun 24, 11:14 UTC3h 15m
2026-06-18 SPLFP - Jun 18, 14:55 UTCJun 18, 18:15 UTC3h 20m
2026-06-18 SPLFP - Jun 18, 12:50 UTCJun 18, 14:20 UTC1h 30m
2026-06-18 SPLFP - Jun 18, 11:10 UTCJun 18, 12:10 UTC1h 0m
2026-06-18 SPLFP - Jun 18, 08:45 UTCJun 18, 09:45 UTC1h 0m
2026-06-18 SPLFP - Jun 18, 07:00 UTCJun 18, 07:20 UTC20m
2026-06-18 SPLFP - Jun 18, 05:55 UTCJun 18, 06:25 UTC30m
2026-06-17 SPLFP - Jun 17, 15:00 UTCJun 17, 19:00 UTC4h 0m
2026-06-17 SPLFP - Jun 17, 12:30 UTCJun 17, 14:00 UTC1h 30m
2026-06-17 SPLFP - Jun 17, 06:55 UTCJun 17, 08:35 UTC1h 40m
2026-06-15 SPLFP - Jun 15, 13:50 UTCJun 15, 14:00 UTC10m
2026-06-15 SPLFP - Jun 15, 13:05 UTCJun 15, 13:45 UTC40m
2026-06-15 SPLFP - Jun 15, 10:45 UTCJun 15, 12:00 UTC1h 15m
2026-06-14 SPLFP - Jun 14, 07:00 UTCJun 14, 08:45 UTC1h 45m
2026-06-13 SPLFP - Jun 13, 13:45 UTCJun 13, 14:40 UTC55m
2026-06-13 SPLFP - Jun 13, 11:20 UTCJun 13, 12:20 UTC1h 0m
2026-06-12 SPLFP - Jun 12, 16:55 UTCJun 12, 18:20 UTC1h 25m
2026-06-12 SPLFP - Jun 12, 13:00 UTCJun 12, 14:55 UTC1h 55m
2026-06-12 SPLFP - Jun 12, 10:25 UTCJun 12, 11:35 UTC1h 10m
2026-06-12 SPLFP - Jun 12, 07:20 UTCJun 12, 08:50 UTC1h 30m
2026-06-08 SPLFP - Jun 8, 08:50 UTCJun 8, 10:05 UTC1h 15m
2026-06-08 SPLFP - Jun 8, 05:55 UTCJun 8, 06:55 UTC1h 0m
2026-06-07 SPLFP - Jun 7, 16:35 UTCJun 7, 17:30 UTC55m
2026-06-07 SPLFP - Jun 7, 06:35 UTCJun 7, 07:35 UTC1h 0m
2026-06-06 SPLFP - Jun 6, 08:10 UTCJun 6, 09:50 UTC1h 40m
2026-06-05 SPLFP - Jun 5, 10:30 UTCJun 5, 11:55 UTC1h 25m
2026-06-05 SPLFP - Jun 5, 07:45 UTCJun 5, 09:00 UTC1h 15m
2026-06-04 SPLFP - Jun 4, 13:35 UTCJun 4, 16:15 UTC2h 40m
2026-06-04 SPLFP - Jun 4, 11:50 UTCJun 4, 12:45 UTC55m
2026-06-04 SPLFP - Jun 4, 06:20 UTCJun 4, 09:15 UTC2h 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-LFP page for operator, model, and routing details .

Mode-S 48EF21 frequently asked

What is Mode-S code 48EF21?
48EF21 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-LFP.
Where is Mode-S 48EF21 registered?
Mode-S code 48EF21 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48EF21 broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48EF21, octal 22167441, decimal 4,779,809.
What flights does 48EF21 operate?
Mode-S 48EF21 has broadcast 1 distinct callsign, including SPLFP.