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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 Jul 26, 22:45 UTC
Flights observed
459
Distinct callsigns
20
Country
BR
Last broadcast
Jul 26, 22:45 UTC

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 TAM Brazilian Airlines 8 2026-07-20
TAM4532 TAM Brazilian Airlines 7 2026-07-23
TAM3923 - 7 2026-07-08
TAM3918 - 7 2026-07-20
TAM3914 TAM Brazilian Airlines 7 2026-07-25
TAM3913 - 7 2026-07-14
TAM3550 - 7 2026-07-10
TAM3122 - 7 2026-07-17
TAM4714 - 6 2026-06-23
TAM3905 TAM Brazilian Airlines 6 2026-07-23
TAM3934 - 5 2026-07-08
TAM3929 - 5 2026-07-17
TAM3919 TAM Brazilian Airlines 5 2026-07-23
TAM3910 TAM Brazilian Airlines 5 2026-07-25
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TAM3009 BSB → CGH Jul 26, 19:45 UTCJul 26, 22:45 UTC3h 0m
2026-07-26 TAM9075 SDU → BPS Jul 26, 16:40 UTCJul 26, 17:30 UTC50m
2026-07-26 TAM9074 BPS → SDU Jul 26, 09:05 UTCJul 26, 15:35 UTC6h 30m
2026-07-25 TAM3796 BSB → SDU Jul 25, 20:40 UTCJul 26, 00:55 UTC4h 15m
2026-07-25 TAM3914 CGH → SDU Jul 25, 17:40 UTCJul 25, 18:25 UTC45m
2026-07-25 TAM3925 - Jul 25, 15:25 UTCJul 25, 15:55 UTC30m
2026-07-25 TAM3910 CGH → SDU Jul 25, 13:10 UTCJul 25, 13:35 UTC25m
2026-07-25 TAM9132 CGH → NAT Jul 25, 00:15 UTCJul 25, 00:55 UTC40m
2026-07-24 TAM3803 SDU → CGH Jul 24, 22:15 UTCJul 24, 23:05 UTC50m
2026-07-24 TAM3782 BSB → REC Jul 24, 09:10 UTCJul 24, 21:15 UTC12h 5m
2026-07-23 TAM4532 BPS → SDU Jul 23, 22:40 UTCJul 23, 23:10 UTC30m
2026-07-23 TAM3919 SDU → CGH Jul 23, 20:30 UTCJul 23, 21:20 UTC50m
2026-07-23 TAM3786 BSB → SDU Jul 23, 15:45 UTCJul 23, 19:30 UTC3h 45m
2026-07-23 TAM3910 CGH → SDU Jul 23, 14:00 UTCJul 23, 14:35 UTC35m
2026-07-23 TAM3905 SDU → CGH Jul 23, 10:55 UTCJul 23, 11:40 UTC45m
2026-07-22 TAM3938 CGH → SDU Jul 22, 23:45 UTCJul 23, 00:00 UTC15m
2026-07-22 TAM3171 REC → CGH Jul 22, 21:35 UTCJul 22, 22:25 UTC50m
2026-07-22 TAM3491 FOR → REC Jul 22, 17:25 UTCJul 22, 18:25 UTC1h 0m
2026-07-22 TAM3490 REC → FOR Jul 22, 15:25 UTCJul 22, 16:25 UTC1h 0m
2026-07-22 TAM3170 CGH → REC Jul 22, 11:40 UTCJul 22, 12:05 UTC25m
2026-07-22 TAM3274 - Jul 22, 00:05 UTCJul 22, 00:55 UTC50m
2026-07-21 TAM4532 BPS → SDU Jul 21, 22:40 UTCJul 21, 23:15 UTC35m
2026-07-21 TAM3919 SDU → CGH Jul 21, 20:40 UTCJul 21, 21:20 UTC40m
2026-07-21 TAM3786 BSB → SDU Jul 21, 15:35 UTCJul 21, 19:20 UTC3h 45m
2026-07-21 TAM3910 CGH → SDU Jul 21, 14:00 UTCJul 21, 14:40 UTC40m
2026-07-21 TAM3911 SDU → CGH Jul 21, 11:35 UTCJul 21, 12:15 UTC40m
2026-07-21 TAM3902 CGH → SDU Jul 21, 09:55 UTCJul 21, 10:35 UTC40m
2026-07-21 TAM3079 - Jul 21, 00:15 UTCJul 21, 01:05 UTC50m
2026-07-20 TAM3951 SDU → CGH Jul 20, 20:20 UTCJul 20, 20:55 UTC35m
2026-07-20 TAM3918 - Jul 20, 18:35 UTCJul 20, 19:10 UTC35m
2026-07-20 TAM3575 - Jul 20, 15:40 UTCJul 20, 16:15 UTC35m
2026-07-20 TAM3574 CGH → NAT Jul 20, 14:05 UTCJul 20, 14:25 UTC20m
2026-07-20 TAM3675 SSA → SDU Jul 20, 06:35 UTCJul 20, 07:35 UTC1h 0m
2026-07-19 TAM3675 SSA → SDU Jul 19, 09:05 UTCJul 20, 07:35 UTC22h 30m
2026-07-18 TAM3796 - Jul 18, 20:35 UTCJul 19, 00:50 UTC4h 15m
2026-07-18 TAM3914 - Jul 18, 17:45 UTCJul 18, 18:20 UTC35m
2026-07-18 TAM3925 - Jul 18, 15:00 UTCJul 18, 15:45 UTC45m
2026-07-18 TAM3910 - Jul 18, 13:15 UTCJul 18, 13:50 UTC35m
2026-07-17 TAM3788 - Jul 17, 20:44 UTCJul 17, 21:25 UTC40m
2026-07-17 TAM3950 - Jul 17, 18:50 UTCJul 17, 19:25 UTC35m
2026-07-17 TAM3929 - Jul 17, 16:34 UTCJul 17, 17:20 UTC45m
2026-07-17 TAM3122 - Jul 17, 14:39 UTCJul 17, 15:15 UTC35m
2026-07-17 TAM3173 - Jul 17, 09:55 UTCJul 17, 10:40 UTC45m
2026-07-15 TAM3737 - Jul 15, 17:45 UTCJul 15, 22:30 UTC4h 45m
2026-07-15 TAM3430 - Jul 15, 12:40 UTCJul 15, 16:50 UTC4h 10m
2026-07-15 TAM3905 - Jul 15, 10:20 UTCJul 15, 11:05 UTC45m
2026-07-14 TAM3051 - Jul 14, 16:30 UTCJul 14, 17:20 UTC50m
2026-07-14 TAM3913 - Jul 14, 12:20 UTCJul 14, 13:10 UTC50m
2026-07-14 TAM3904 - Jul 14, 10:40 UTCJul 14, 11:15 UTC35m
2026-07-14 TAM3220 - Jul 14, 01:10 UTCJul 14, 02:25 UTC1h 15m

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 Jul 26, 22:45 UTC.
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, TAM4532, TAM3923, TAM3918, TAM3914.