Apparatus

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sensors Mode-S transponder

511172

ICAO 24-bit transponder address · allocated to Estonia

Currently assigned to ES-MBC · AIRBUS A-320neo

Hex
511172
Octal
24210562
Decimal
5,312,882
Country
EE
Tail
ES-MBC
Type
A20N
Transponder active on ground
Flights observed
180
Distinct callsigns
20
Country
EE
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 511172.

Country allocation

The ICAO 24-bit address 511172 falls within the block assigned to Estonia (EE) by ICAO Annex 10, Volume III. Every aircraft registered in Estonia 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
MBU5AW Marabu Airlines 9 2026-05-29
MBU7MX Marabu Airlines 7 2026-04-18
MBU6VG Marabu Airlines 7 2026-05-26
MBU2QV Marabu Airlines 7 2026-05-11
MBU8DT Marabu Airlines 6 2026-04-16
MBU6CZ Marabu Airlines 6 2026-05-11
MBU7PL Marabu Airlines 5 2026-04-16
MBU7AE Marabu Airlines 5 2026-05-21
MBU6GN Marabu Airlines 5 2026-05-21
MBU6239 Marabu Airlines 5 2026-05-11
MBU4HW Marabu Airlines 5 2026-04-18
MBU3WL Marabu Airlines 5 2026-04-18
MBU3SD Marabu Airlines 5 2026-05-26
MBU2VF Marabu Airlines 5 2026-04-18
MBU1TF Marabu Airlines 5 2026-05-29
MBU6147 Marabu Airlines 4 2026-05-24
MBU3UM Marabu Airlines 4 2026-05-26
MBU3GF Marabu Airlines 4 2026-05-14
MBU9LK Marabu Airlines 3 2026-05-20
MBU8TY Marabu Airlines 3 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 MBU6JB ACE → HAM May 29, 16:15 UTCMay 29, 20:35 UTC4h 20m
2026-05-29 MBU3PK HAM → ACE May 29, 10:40 UTCMay 29, 14:50 UTC4h 10m
2026-05-29 MBU1TF PMI → HAM May 29, 07:00 UTCMay 29, 09:25 UTC2h 25m
2026-05-29 MBU5AW NUE → PMI May 29, 03:50 UTCMay 29, 05:35 UTC1h 45m
2026-05-28 MBU5UE RHO → NUE May 28, 21:15 UTCMay 29, 00:15 UTC3h 0m
2026-05-28 MBU3BE NUE → RHO May 28, 17:15 UTCMay 28, 19:50 UTC2h 35m
2026-05-27 MBU3EL KGS → NUE May 27, 19:35 UTCMay 27, 22:20 UTC2h 45m
2026-05-27 MBU3NF NUE → KGS May 27, 15:50 UTCMay 27, 18:25 UTC2h 35m
2026-05-27 MBU9PN NUE → LPA May 27, 04:19 UTCMay 27, 14:25 UTC10h 5m
2026-05-26 MBU3SD NUE → FUE May 26, 11:20 UTCMay 26, 21:00 UTC9h 40m
2026-05-26 MBU6VG PMI → NUE May 26, 07:59 UTCMay 26, 09:55 UTC1h 55m
2026-05-26 MBU3UM HAM → PMI May 26, 04:15 UTCMay 26, 06:54 UTC2h 40m
2026-05-25 MBU7NV FNC → HAM May 25, 16:55 UTCMay 25, 20:09 UTC3h 15m
2026-05-25 MBU7NV FNC → HAM May 25, 16:05 UTCMay 25, 16:15 UTC10m
2026-05-25 MBU9LP HAM → FNC May 25, 14:10 UTCMay 25, 14:20 UTC10m
2026-05-25 MBU9LP HAM → FNC May 25, 10:10 UTCMay 25, 13:20 UTC3h 10m
2026-05-25 MBU1TF PMI → HAM May 25, 06:20 UTCMay 25, 08:50 UTC2h 30m
2026-05-25 MBU5AW NUE → PMI May 25, 03:10 UTCMay 25, 05:00 UTC1h 50m
2026-05-24 MBU6147 HRG → NUE May 24, 04:30 UTCMay 24, 14:15 UTC9h 45m
2026-05-23 MBU3EL KGS → NUE May 23, 21:10 UTCMay 23, 23:45 UTC2h 35m
2026-05-23 MBU3NF NUE → KGS May 23, 16:45 UTCMay 23, 19:20 UTC2h 35m
2026-05-23 MBU8TY OLB → NUE May 23, 12:55 UTCMay 23, 14:20 UTC1h 25m
2026-05-23 MBU1MR - May 23, 10:05 UTCMay 23, 11:25 UTC1h 20m
2026-05-23 MBU9001 PMI → HAM May 23, 04:55 UTCMay 23, 05:45 UTC50m
2026-05-21 MBU7AE PMI → HAM May 21, 17:00 UTCMay 21, 19:35 UTC2h 35m
2026-05-21 MBU6GN HAM → PMI May 21, 13:25 UTCMay 21, 15:40 UTC2h 15m
2026-05-21 MBU7HQ CHQ → HAM May 21, 08:50 UTCMay 21, 12:00 UTC3h 10m
2026-05-21 MBU8AZ HAM → CHQ May 21, 04:25 UTCMay 21, 07:25 UTC3h 0m
2026-05-20 MBU7AE PMI → HAM May 20, 18:30 UTCMay 20, 20:55 UTC2h 25m
2026-05-20 MBU6GN HAM → PMI May 20, 14:15 UTCMay 20, 16:25 UTC2h 10m
2026-05-20 MBU9LK HER → HAM May 20, 09:10 UTCMay 20, 12:20 UTC3h 10m
2026-05-20 MBU5TA HAM → HER May 20, 04:35 UTCMay 20, 07:25 UTC2h 51m
2026-05-19 MBU3PK HAM → ACE May 19, 10:00 UTCMay 19, 20:10 UTC10h 10m
2026-05-19 MBU1TF PMI → HAM May 19, 06:20 UTCMay 19, 08:50 UTC2h 30m
2026-05-19 MBU5AW NUE → PMI May 19, 02:55 UTCMay 19, 04:40 UTC1h 45m
2026-05-18 MBU3ZE CFU → NUE May 18, 18:10 UTCMay 18, 19:55 UTC1h 44m
2026-05-18 MBU2MG NUE → CFU May 18, 15:15 UTCMay 18, 17:05 UTC1h 50m
2026-05-17 MBU8TY OLB → NUE May 17, 18:55 UTCMay 17, 20:15 UTC1h 20m
2026-05-17 MBU1MR - May 17, 16:01 UTCMay 17, 17:20 UTC1h 20m
2026-05-16 MBU8TY OLB → NUE May 16, 16:00 UTCMay 16, 17:25 UTC1h 25m
2026-05-16 MBU1MR - May 16, 13:25 UTCMay 16, 14:41 UTC1h 15m
2026-05-16 MBU6VG PMI → NUE May 16, 09:56 UTCMay 16, 11:51 UTC1h 55m
2026-05-16 MBU5AW NUE → PMI May 16, 06:20 UTCMay 16, 08:20 UTC2h 0m
2026-05-15 MBU3SD NUE → FUE May 15, 11:15 UTCMay 15, 20:45 UTC9h 29m
2026-05-15 MBU3ZE CFU → NUE May 15, 06:10 UTCMay 15, 08:10 UTC2h 0m
2026-05-15 MBU2MG NUE → CFU May 15, 03:15 UTCMay 15, 04:55 UTC1h 40m
2026-05-14 MBU6EP FNC → NUE May 14, 16:25 UTCMay 14, 20:10 UTC3h 45m
2026-05-14 MBU3GF NUE → FNC May 14, 15:01 UTCMay 14, 15:15 UTC15m
2026-05-14 MBU3GF NUE → FNC May 14, 11:15 UTCMay 14, 14:10 UTC2h 55m
2026-05-14 MBU6VG PMI → NUE May 14, 08:00 UTCMay 14, 09:45 UTC1h 45m

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 ES-MBC page for operator, model, and routing details .

Mode-S 511172 frequently asked

What is Mode-S code 511172?
511172 is an ICAO 24-bit transponder address. Allocated to Estonia. Assigned to ES-MBC.
Where is Mode-S 511172 registered?
Mode-S code 511172 is allocated to Estonia (EE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 511172 broadcasting right now?
Mode-S 511172 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 511172, octal 24210562, decimal 5,312,882.
What flights does 511172 operate?
Mode-S 511172 has broadcast 20 distinct callsigns, including MBU5AW, MBU7MX, MBU6VG, MBU2QV, MBU8DT.