Apparatus

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sensors Mode-S transponder

48E899

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-ESN · BOEING 737-800

Hex
48E899
Octal
22164231
Decimal
4,778,137
Country
PL
Tail
SP-ESN
Type
B738
Broadcasting now · callsign ENT4866 · 36,000 ft
Flights observed
248
Distinct callsigns
20
Country
PL
Last broadcast
20m ago

Current position

48E899 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 48E899 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 20 distinct

Callsign Airline Flights Last seen
ENT509N - 3 2026-04-21
ENT4865 - 3 2026-07-14
ENT4092 - 3 2026-07-05
ENT4091 - 3 2026-07-05
ENT1184 - 3 2026-06-16
ENT8UM - 2 2026-04-17
ENT7006 DAT Enterprise Limited 2 2026-05-16
ENT6BW - 2 2026-04-18
ENT5112 - 2 2026-07-13
ENT5111 - 2 2026-07-13
ENT4906 - 2 2026-07-06
ENT4905 - 2 2026-07-07
ENT4337 - 2 2026-07-14
ENT4106 - 2 2026-07-14
ENT4068 - 2 2026-07-11
ENT1442 - 2 2026-07-13
ENT1441 - 2 2026-07-13
ENT9YJ - 1 2026-06-26
ENT9TM - 1 2026-07-10
ENT9PE - 1 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ENT4865 - Jul 14, 07:25 UTCJul 14, 14:15 UTC6h 50m
2026-07-14 ENT4106 - Jul 14, 03:45 UTCJul 14, 05:50 UTC2h 5m
2026-07-14 ENT4337 - Jul 14, 00:25 UTCJul 14, 02:25 UTC2h 0m
2026-07-13 ENT5112 - Jul 13, 13:45 UTCJul 13, 16:10 UTC2h 25m
2026-07-13 ENT1441 - Jul 13, 09:55 UTCJul 13, 12:20 UTC2h 25m
2026-07-13 ENT1442 - Jul 13, 05:55 UTCJul 13, 08:30 UTC2h 35m
2026-07-13 ENT5111 - Jul 13, 02:10 UTCJul 13, 04:35 UTC2h 25m
2026-07-12 ENT3JC - Jul 12, 20:25 UTCJul 12, 22:15 UTC1h 50m
2026-07-12 ENT4SC - Jul 12, 16:50 UTCJul 12, 18:45 UTC1h 55m
2026-07-12 ENT2HM - Jul 12, 13:10 UTCJul 12, 15:05 UTC1h 55m
2026-07-12 ENT8FT - Jul 12, 10:05 UTCJul 12, 11:50 UTC1h 45m
2026-07-12 ENT4074 - Jul 12, 04:55 UTCJul 12, 07:20 UTC2h 25m
2026-07-12 ENT4073 - Jul 12, 01:10 UTCJul 12, 03:25 UTC2h 15m
2026-07-11 ENT4066 - Jul 11, 13:30 UTCJul 11, 23:15 UTC9h 45m
2026-07-11 ENT4068 - Jul 11, 01:45 UTCJul 11, 11:30 UTC9h 45m
2026-07-10 ENT9MH - Jul 10, 17:55 UTCJul 10, 19:45 UTC1h 50m
2026-07-10 ENT9TM - Jul 10, 15:15 UTCJul 10, 16:55 UTC1h 40m
2026-07-10 ENT3TK - Jul 10, 12:00 UTCJul 10, 13:55 UTC1h 55m
2026-07-10 ENT1JY - Jul 10, 09:15 UTCJul 10, 10:55 UTC1h 40m
2026-07-10 ENT4YN - Jul 10, 05:40 UTCJul 10, 07:45 UTC2h 5m
2026-07-10 ENT5FB - Jul 10, 02:50 UTCJul 10, 04:30 UTC1h 40m
2026-07-09 ENT7513 - Jul 9, 08:25 UTCJul 9, 17:50 UTC9h 25m
2026-07-09 ENT1010 - Jul 9, 04:25 UTCJul 9, 07:00 UTC2h 35m
2026-07-09 ENT1009 - Jul 9, 01:00 UTCJul 9, 03:10 UTC2h 10m
2026-07-08 ENT5166 - Jul 8, 17:20 UTCJul 8, 20:10 UTC2h 50m
2026-07-08 ENT7501 - Jul 8, 12:55 UTCJul 8, 15:40 UTC2h 45m
2026-07-08 ENT7502 - Jul 8, 08:20 UTCJul 8, 11:30 UTC3h 10m
2026-07-08 ENT5165 WRO → AYT Jul 8, 04:40 UTCJul 8, 07:10 UTC2h 30m
2026-07-07 ENT4905 BZG → WRO Jul 7, 12:30 UTCJul 7, 22:25 UTC9h 55m
2026-07-06 ENT4906 WRO → BZG Jul 6, 22:55 UTCJul 7, 08:25 UTC9h 30m
2026-07-06 ENT3BX - Jul 6, 12:45 UTCJul 6, 17:30 UTC4h 45m
2026-07-06 ENT4XK - Jul 6, 06:25 UTCJul 6, 11:15 UTC4h 50m
2026-07-05 ENT4ZM - Jul 5, 18:10 UTCJul 5, 20:05 UTC1h 55m
2026-07-05 ENT5XT - Jul 5, 15:20 UTCJul 5, 17:10 UTC1h 50m
2026-07-05 ENT4092 - Jul 5, 11:40 UTCJul 5, 14:05 UTC2h 25m
2026-07-05 ENT4091 - Jul 5, 08:10 UTCJul 5, 10:30 UTC2h 20m
2026-07-05 ENT3PS - Jul 5, 04:35 UTCJul 5, 06:50 UTC2h 15m
2026-07-05 ENT3DK - Jul 5, 00:45 UTCJul 5, 03:00 UTC2h 15m
2026-07-04 ENT7188 - Jul 4, 18:10 UTCJul 4, 20:55 UTC2h 45m
2026-07-04 ENT4007 - Jul 4, 14:00 UTCJul 4, 16:55 UTC2h 55m
2026-07-04 ENT7062 - Jul 4, 01:55 UTCJul 4, 04:50 UTC2h 55m
2026-07-03 ENT7187 WRO → AYT Jul 3, 22:20 UTCJul 4, 00:45 UTC2h 25m
2026-07-03 ENT5SW - Jul 3, 18:45 UTCJul 3, 20:30 UTC1h 45m
2026-07-03 ENT9HM - Jul 3, 15:50 UTCJul 3, 17:40 UTC1h 50m
2026-07-03 ENT3KP - Jul 3, 12:05 UTCJul 3, 13:55 UTC1h 50m
2026-07-03 ENT5ET - Jul 3, 09:15 UTCJul 3, 11:05 UTC1h 50m
2026-07-03 ENT6MB - Jul 3, 06:00 UTCJul 3, 07:55 UTC1h 55m
2026-07-03 ENT7AJ - Jul 3, 03:05 UTCJul 3, 04:55 UTC1h 50m
2026-07-02 ENT4441 KTW → HRG Jul 2, 16:55 UTCJul 3, 01:45 UTC8h 50m
2026-07-02 ENT4103 - Jul 2, 02:30 UTCJul 2, 11:35 UTC9h 5m

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

Mode-S 48E899 frequently asked

What is Mode-S code 48E899?
48E899 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-ESN.
Where is Mode-S 48E899 registered?
Mode-S code 48E899 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48E899 broadcasting right now?
Yes. Mode-S 48E899 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48E899, octal 22164231, decimal 4,778,137.
What flights does 48E899 operate?
Mode-S 48E899 has broadcast 20 distinct callsigns, including ENT509N, ENT4865, ENT4092, ENT4091, ENT1184.