Apparatus

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sensors Mode-S transponder

4891B4

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-ENW · BOEING 737-800

Hex
4891B4
Octal
22110664
Decimal
4,755,892
Country
PL
Tail
SP-ENW
Type
B738
Broadcasting now · callsign ENT2MC · 23,775 ft
Flights observed
287
Distinct callsigns
20
Country
PL
Last broadcast
Jul 26, 19:45 UTC

Current position

4891B4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4891B4 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
ENT4003 DAT Enterprise Limited 5 2026-07-25
ENT4004 - 4 2026-07-25
ENT4598 DAT Enterprise Limited 3 2026-07-25
ENT4597 DAT Enterprise Limited 3 2026-07-25
ENT4182 DAT Enterprise Limited 3 2026-07-26
ENT4073 - 3 2026-06-28
ENT778 DAT Enterprise Limited 2 2026-05-10
ENT777 DAT Enterprise Limited 2 2026-05-10
ENT7502 - 2 2026-06-10
ENT7501 - 2 2026-06-10
ENT7292 - 2 2026-06-08
ENT7291 DAT Enterprise Limited 2 2026-06-08
ENT7036 - 2 2026-06-24
ENT6WB - 2 2026-07-15
ENT5218 - 2 2026-06-18
ENT5217 - 2 2026-06-18
ENT5166 - 2 2026-06-10
ENT5165 - 2 2026-06-10
ENT5112 - 2 2026-06-29
ENT5111 - 2 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENT4182 AYT → SZZ Jul 26, 10:10 UTCJul 26, 19:45 UTC9h 35m
2026-07-26 ENT7BT KTW → LPA Jul 26, 04:45 UTCJul 26, 07:20 UTC2h 36m
2026-07-26 ENT8RK - Jul 26, 01:10 UTCJul 26, 03:20 UTC2h 10m
2026-07-25 ENT4004 - Jul 25, 17:50 UTCJul 25, 21:10 UTC3h 20m
2026-07-25 ENT4597 WAW → SSH Jul 25, 12:20 UTCJul 25, 15:50 UTC3h 30m
2026-07-25 ENT4598 SSH → WAW Jul 25, 05:25 UTCJul 25, 09:05 UTC3h 40m
2026-07-25 ENT4003 KTW → SSH Jul 25, 00:20 UTCJul 25, 03:40 UTC3h 20m
2026-07-24 ENT5183 - Jul 24, 10:00 UTCJul 24, 19:05 UTC9h 5m
2026-07-23 ENT5184 - Jul 23, 23:15 UTCJul 24, 08:30 UTC9h 15m
2026-07-22 ENT2XH FUE → KTW Jul 22, 03:35 UTCJul 22, 05:25 UTC1h 50m
2026-07-21 ENT6RP - Jul 21, 23:50 UTCJul 22, 01:55 UTC2h 5m
2026-07-21 ENT9GD FNC → WAW Jul 21, 20:10 UTCJul 21, 21:45 UTC1h 35m
2026-07-21 ENT7DT - Jul 21, 17:05 UTCJul 21, 18:50 UTC1h 45m
2026-07-21 ENT3XH - Jul 21, 14:10 UTCJul 21, 15:55 UTC1h 45m
2026-07-21 ENT5NA KTW → FNC Jul 21, 11:30 UTCJul 21, 13:05 UTC1h 35m
2026-07-21 ENT221 - Jul 21, 02:05 UTCJul 21, 05:15 UTC3h 10m
2026-07-20 ENT220 WAW → TLV Jul 20, 21:20 UTCJul 21, 00:20 UTC2h 59m
2026-07-20 ENT4010 DJE → KTW Jul 20, 14:15 UTCJul 20, 16:35 UTC2h 20m
2026-07-20 ENT4215 - Jul 20, 10:00 UTCJul 20, 12:50 UTC2h 50m
2026-07-20 ENT4216 - Jul 20, 03:55 UTCJul 20, 06:25 UTC2h 30m
2026-07-20 ENT4009 WAW → HRG Jul 20, 00:00 UTCJul 20, 02:30 UTC2h 30m
2026-07-19 ENT7PF TFS → WAW Jul 19, 19:55 UTCJul 19, 21:55 UTC2h 0m
2026-07-19 ENT7GA HER → WRO Jul 19, 17:05 UTCJul 19, 19:05 UTC2h 0m
2026-07-19 ENT9BG - Jul 19, 14:00 UTCJul 19, 15:55 UTC1h 55m
2026-07-19 ENT2CD KTW → LPA Jul 19, 09:55 UTCJul 19, 12:10 UTC2h 15m
2026-07-19 ENT4RZ - Jul 19, 04:50 UTCJul 19, 07:10 UTC2h 20m
2026-07-19 ENT1EB DOL → CDG Jul 19, 00:30 UTCJul 19, 03:05 UTC2h 35m
2026-07-18 ENT4597 WAW → SSH Jul 18, 12:25 UTCJul 18, 21:15 UTC8h 50m
2026-07-18 ENT4598 SSH → WAW Jul 18, 05:40 UTCJul 18, 09:20 UTC3h 40m
2026-07-18 ENT4003 KTW → SSH Jul 18, 00:29 UTCJul 18, 03:45 UTC3h 16m
2026-07-17 ENT5082 AYT → KTW Jul 17, 10:05 UTCJul 17, 19:45 UTC9h 40m
2026-07-16 ENT5081 KTW → AYT Jul 16, 22:59 UTCJul 17, 08:40 UTC9h 40m
2026-07-16 ENT1358 - Jul 16, 19:14 UTCJul 16, 21:35 UTC2h 20m
2026-07-16 ENT1359 - Jul 16, 15:14 UTCJul 16, 17:54 UTC2h 40m
2026-07-16 ENT1360 - Jul 16, 11:30 UTCJul 16, 14:05 UTC2h 35m
2026-07-16 ENT7517 POZ → NBE Jul 16, 07:45 UTCJul 16, 10:25 UTC2h 40m
2026-07-16 ENT7518 NBE → POZ Jul 16, 03:40 UTCJul 16, 06:10 UTC2h 30m
2026-07-16 ENT1357 - Jul 16, 00:15 UTCJul 16, 02:35 UTC2h 20m
2026-07-15 ENT7KZ - Jul 15, 04:25 UTCJul 15, 06:45 UTC2h 20m
2026-07-15 ENT6WB - Jul 15, 00:55 UTCJul 15, 03:00 UTC2h 5m
2026-07-14 ENT4204 - Jul 14, 21:15 UTCJul 14, 23:50 UTC2h 34m
2026-07-14 ENT4445 POZ → AYT Jul 14, 17:20 UTCJul 14, 20:05 UTC2h 45m
2026-07-14 ENT4996 - Jul 14, 10:25 UTCJul 14, 13:05 UTC2h 40m
2026-07-14 ENT4107 - Jul 14, 07:20 UTCJul 14, 09:10 UTC1h 50m
2026-07-14 ENT4108 - Jul 14, 02:45 UTCJul 14, 05:20 UTC2h 35m
2026-07-13 ENT4995 - Jul 13, 23:10 UTCJul 14, 01:20 UTC2h 10m
2026-07-13 ENT4018 NBE → POZ Jul 13, 16:40 UTCJul 13, 19:15 UTC2h 35m
2026-07-13 ENT4017 POZ → NBE Jul 13, 13:10 UTCJul 13, 15:45 UTC2h 35m
2026-07-13 ENT2WY - Jul 13, 09:15 UTCJul 13, 12:15 UTC3h 0m
2026-07-13 ENT4HC - Jul 13, 03:55 UTCJul 13, 07:25 UTC3h 30m

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

Mode-S 4891B4 frequently asked

What is Mode-S code 4891B4?
4891B4 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-ENW.
Where is Mode-S 4891B4 registered?
Mode-S code 4891B4 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4891B4 broadcasting right now?
Yes. Mode-S 4891B4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4891B4, octal 22110664, decimal 4,755,892.
What flights does 4891B4 operate?
Mode-S 4891B4 has broadcast 20 distinct callsigns, including ENT4003, ENT4004, ENT4598, ENT4597, ENT4182.