Apparatus

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sensors Mode-S transponder

E4851B

ICAO 24-bit transponder address · allocated to Brazil

Currently assigned to PT-TMD · AIRBUS A-319

Hex
E4851B
Octal
71102433
Decimal
14,976,283
Country
BR
Tail
PT-TMD
Type
A319
No current signal · last broadcast 4h ago
Flights observed
410
Distinct callsigns
20
Country
BR
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S E4851B.

Country allocation

The ICAO 24-bit address E4851B falls within the block assigned to Brazil (BR) by ICAO Annex 10, Volume III. Every aircraft registered in Brazil 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
TAM3951 - 7 2026-06-30
TAM3923 - 7 2026-07-08
TAM3550 - 7 2026-07-10
TAM4714 - 6 2026-06-23
TAM3918 - 6 2026-06-30
TAM3913 - 6 2026-06-25
TAM3122 - 6 2026-06-27
TAM4532 TAM Brazilian Airlines 5 2026-06-19
TAM3934 - 5 2026-07-08
TAM3914 - 5 2026-07-13
TAM3829 - 5 2026-07-06
TAM3701 - 5 2026-06-22
TAM3700 - 5 2026-06-22
TAM4733 TAM Brazilian Airlines 4 2026-06-08
TAM3975 - 4 2026-07-01
TAM3974 - 4 2026-07-01
TAM3947 TAM Brazilian Airlines 4 2026-06-15
TAM3944 TAM Brazilian Airlines 4 2026-06-09
TAM3941 - 4 2026-07-08
TAM3935 TAM Brazilian Airlines 4 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TAM3220 - Jul 14, 01:10 UTCJul 14, 02:25 UTC1h 15m
2026-07-13 TAM3943 - Jul 13, 23:00 UTCJul 13, 23:45 UTC45m
2026-07-13 TAM3914 - Jul 13, 21:40 UTCJul 13, 22:10 UTC30m
2026-07-13 TAM3102 CGH → CGH Jul 13, 16:15 UTCJul 13, 19:55 UTC3h 40m
2026-07-13 TAM3917 - Jul 13, 13:55 UTCJul 13, 14:10 UTC15m
2026-07-13 TAM3906 - Jul 13, 11:30 UTCJul 13, 11:55 UTC25m
2026-07-12 TAM3597 - Jul 12, 20:40 UTCJul 12, 21:35 UTC55m
2026-07-12 TAM3596 - Jul 12, 19:01 UTCJul 12, 19:40 UTC40m
2026-07-12 TAM3209 - Jul 12, 14:05 UTCJul 12, 15:01 UTC55m
2026-07-12 TAM3208 - Jul 12, 12:20 UTCJul 12, 13:01 UTC40m
2026-07-12 TAM3259 - Jul 12, 09:20 UTCJul 12, 10:55 UTC1h 35m
2026-07-11 TAM9073 - Jul 11, 21:40 UTCJul 11, 22:55 UTC1h 15m
2026-07-11 TAM9122 CGH → CGH Jul 11, 01:30 UTCJul 11, 10:05 UTC8h 35m
2026-07-10 TAM3803 - Jul 10, 22:40 UTCJul 10, 23:10 UTC30m
2026-07-10 TAM3782 - Jul 10, 17:20 UTCJul 10, 21:10 UTC3h 51m
2026-07-10 TAM9069 BPS → SDU Jul 10, 15:05 UTCJul 10, 16:10 UTC1h 5m
2026-07-10 TAM9068 SDU → BPS Jul 10, 12:30 UTCJul 10, 13:20 UTC50m
2026-07-10 TAM3550 - Jul 10, 10:50 UTCJul 10, 11:25 UTC35m
2026-07-10 TAM3868 - Jul 10, 00:55 UTCJul 10, 08:10 UTC7h 15m
2026-07-09 TAM3737 FLN → BSB Jul 9, 17:50 UTCJul 9, 18:55 UTC1h 5m
2026-07-09 TAM3430 - Jul 9, 09:05 UTCJul 9, 16:40 UTC7h 35m
2026-07-09 TAM3938 - Jul 9, 00:10 UTCJul 9, 00:50 UTC40m
2026-07-08 TAM3941 - Jul 8, 22:00 UTCJul 8, 22:50 UTC50m
2026-07-08 TAM3934 - Jul 8, 20:25 UTCJul 8, 21:05 UTC40m
2026-07-08 TAM3931 - Jul 8, 18:05 UTCJul 8, 18:45 UTC40m
2026-07-08 TAM3923 - Jul 8, 14:15 UTCJul 8, 15:00 UTC45m
2026-07-08 TAM3908 - Jul 8, 12:55 UTCJul 8, 13:30 UTC35m
2026-07-08 TAM3196 - Jul 8, 02:45 UTCJul 8, 05:05 UTC2h 20m
2026-07-07 TAM3268 - Jul 7, 19:50 UTCJul 8, 01:15 UTC5h 25m
2026-07-07 TAM3301 - Jul 7, 13:50 UTCJul 7, 14:50 UTC1h 0m
2026-07-07 TAM3300 - Jul 7, 11:55 UTCJul 7, 12:45 UTC50m
2026-07-07 TAM3259 - Jul 7, 09:10 UTCJul 7, 10:30 UTC1h 20m
2026-07-07 TAM3258 - Jul 7, 01:10 UTCJul 7, 01:40 UTC30m
2026-07-06 TAM3291 - Jul 6, 22:40 UTCJul 6, 23:55 UTC1h 15m
2026-07-06 TAM4550 - Jul 6, 20:45 UTCJul 6, 21:10 UTC25m
2026-07-06 TAM3829 - Jul 6, 11:10 UTCJul 6, 19:40 UTC8h 30m
2026-07-06 TAM4621 - Jul 6, 08:30 UTCJul 6, 09:30 UTC1h 0m
2026-07-05 TAM3400 - Jul 5, 20:50 UTCJul 6, 00:05 UTC3h 15m
2026-07-05 TAM3829 - Jul 5, 11:05 UTCJul 5, 19:10 UTC8h 5m
2026-07-05 TAM3199 - Jul 5, 00:20 UTCJul 5, 08:45 UTC8h 25m
2026-07-04 TAM3781 - Jul 4, 15:15 UTCJul 4, 15:30 UTC15m
2026-07-03 TAM3536 - Jul 3, 23:50 UTCJul 4, 13:50 UTC14h 0m
2026-07-03 TAM3275 - Jul 3, 22:00 UTCJul 3, 22:50 UTC50m
2026-07-03 TAM3839 - Jul 3, 13:25 UTCJul 3, 16:50 UTC3h 25m
2026-07-03 TAM3619 - Jul 3, 08:30 UTCJul 3, 09:35 UTC1h 5m
2026-07-03 TAM4731 - Jul 3, 00:15 UTCJul 3, 01:25 UTC1h 10m
2026-07-02 TAM3128 - Jul 2, 20:50 UTCJul 2, 22:00 UTC1h 10m
2026-07-02 TAM3828 - Jul 2, 11:15 UTCJul 2, 19:00 UTC7h 45m
2026-07-01 TAM3251 - Jul 1, 19:50 UTCJul 1, 23:50 UTC4h 0m
2026-07-01 TAM3975 - Jul 1, 17:35 UTCJul 1, 18:25 UTC50m

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 PT-TMD page for operator, model, and routing details .

Mode-S E4851B frequently asked

What is Mode-S code E4851B?
E4851B is an ICAO 24-bit transponder address. Allocated to Brazil. Assigned to PT-TMD.
Where is Mode-S E4851B registered?
Mode-S code E4851B is allocated to Brazil (BR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is E4851B broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex E4851B, octal 71102433, decimal 14,976,283.
What flights does E4851B operate?
Mode-S E4851B has broadcast 20 distinct callsigns, including TAM3951, TAM3923, TAM3550, TAM4714, TAM3918.