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
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
378
Distinct callsigns
20
Country
EE
Last broadcast
Jul 26, 20:55 UTC

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 - 16 2026-07-03
MBU7MX Marabu Airlines 14 2026-07-26
MBU1TF - 14 2026-07-03
MBU6VG - 13 2026-07-02
MBU6CZ Marabu Airlines 12 2026-07-23
MBU2QV Marabu Airlines 12 2026-07-23
MBU7AE - 11 2026-07-06
MBU6GN - 11 2026-07-06
MBU4HW Marabu Airlines 11 2026-07-26
MBU3UM - 11 2026-07-02
MBU6239 Marabu Airlines 10 2026-07-23
MBU3GF - 10 2026-07-02
MBU8DT Marabu Airlines 9 2026-07-26
MBU3PK - 9 2026-07-03
MBU7PL Marabu Airlines 8 2026-07-26
MBU9LK - 7 2026-07-06
MBU5TA - 7 2026-07-06
MBU3WL - 7 2026-07-15
MBU3SD - 7 2026-06-30
MBU2VF - 7 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 MBU8DT FUE → LEJ Jul 26, 16:40 UTCJul 26, 20:50 UTC4h 10m
2026-07-26 MBU7PL LEJ → FUE Jul 26, 10:40 UTCJul 26, 14:50 UTC4h 10m
2026-07-26 MBU4HW PMI → LEJ Jul 26, 07:20 UTCJul 26, 09:25 UTC2h 5m
2026-07-26 MBU7MX LEJ → PMI Jul 26, 03:55 UTCJul 26, 06:10 UTC2h 15m
2026-07-25 MBU9AG LEJ → TFS Jul 25, 10:55 UTCJul 25, 22:10 UTC11h 15m
2026-07-25 MBU1RD CFU → LEJ Jul 25, 07:50 UTCJul 25, 09:45 UTC1h 55m
2026-07-25 MBU2RH LEJ → CFU Jul 25, 04:05 UTCJul 25, 05:45 UTC1h 40m
2026-07-24 MBU5DF RHO → LEJ Jul 24, 16:30 UTCJul 24, 19:30 UTC3h 0m
2026-07-24 MBU4AE LEJ → RHO Jul 24, 12:10 UTCJul 24, 14:45 UTC2h 35m
2026-07-24 MBU2YJ KGS → LEJ Jul 24, 08:20 UTCJul 24, 11:05 UTC2h 45m
2026-07-24 MBU8QA LEJ → KGS Jul 24, 03:45 UTCJul 24, 06:20 UTC2h 35m
2026-07-23 MBU6CZ PMI → LEJ Jul 23, 19:15 UTCJul 23, 21:35 UTC2h 20m
2026-07-23 MBU2QV LEJ → PMI Jul 23, 15:50 UTCJul 23, 17:40 UTC1h 50m
2026-07-23 MBU6239 HRG → LEJ Jul 23, 04:30 UTCJul 23, 14:20 UTC9h 50m
2026-07-22 MBU6239 HRG → LEJ Jul 22, 11:10 UTCJul 22, 20:35 UTC9h 25m
2026-07-22 MBU7MX LEJ → PMI Jul 22, 03:45 UTCJul 22, 05:25 UTC1h 40m
2026-07-21 MBU2YJ KGS → LEJ Jul 21, 17:15 UTCJul 21, 20:00 UTC2h 45m
2026-07-21 MBU8QA LEJ → KGS Jul 21, 13:10 UTCJul 21, 15:45 UTC2h 35m
2026-07-21 MBU5DF RHO → LEJ Jul 21, 08:45 UTCJul 21, 11:40 UTC2h 55m
2026-07-21 MBU4AE LEJ → RHO Jul 21, 04:35 UTCJul 21, 07:10 UTC2h 35m
2026-07-20 MBU6CZ PMI → LEJ Jul 20, 19:40 UTCJul 20, 21:45 UTC2h 5m
2026-07-20 MBU2QV - Jul 20, 16:10 UTCJul 20, 18:50 UTC2h 40m
2026-07-20 MBU6239 HRG → LEJ Jul 20, 04:25 UTCJul 20, 14:20 UTC9h 55m
2026-07-19 MBU6CZ PMI → LEJ Jul 19, 19:35 UTCJul 19, 21:45 UTC2h 10m
2026-07-19 MBU2QV - Jul 19, 15:55 UTCJul 19, 18:05 UTC2h 10m
2026-07-19 MBU6238 LEJ → HRG Jul 19, 04:25 UTCJul 19, 14:30 UTC10h 5m
2026-07-18 MBU6CZ - Jul 18, 20:00 UTCJul 18, 22:00 UTC2h 0m
2026-07-18 MBU2QV - Jul 18, 16:25 UTCJul 18, 18:35 UTC2h 10m
2026-07-18 MBU6238 LEJ → HRG Jul 18, 05:20 UTCJul 18, 14:45 UTC9h 25m
2026-07-17 MBU8DT FUE → LEJ Jul 17, 17:50 UTCJul 17, 21:50 UTC4h 0m
2026-07-17 MBU7PL LEJ → FUE Jul 17, 12:00 UTCJul 17, 16:15 UTC4h 15m
2026-07-17 MBU4HW - Jul 17, 08:35 UTCJul 17, 10:30 UTC1h 55m
2026-07-17 MBU7MX - Jul 17, 04:04 UTCJul 17, 06:29 UTC2h 25m
2026-07-16 MBU1RD - Jul 16, 18:55 UTCJul 16, 21:00 UTC2h 5m
2026-07-16 MBU2RH - Jul 16, 15:40 UTCJul 16, 17:20 UTC1h 40m
2026-07-16 MBU3BP FNC → LEJ Jul 16, 10:15 UTCJul 16, 13:54 UTC3h 40m
2026-07-16 MBU5SM - Jul 16, 08:40 UTCJul 16, 08:45 UTC5m
2026-07-16 MBU5SM - Jul 16, 04:25 UTCJul 16, 08:05 UTC3h 40m
2026-07-15 MBU2VF - Jul 15, 17:20 UTCJul 15, 21:30 UTC4h 10m
2026-07-15 MBU3WL - Jul 15, 10:45 UTCJul 15, 15:30 UTC4h 45m
2026-07-15 MBU1RD - Jul 15, 07:10 UTCJul 15, 09:15 UTC2h 5m
2026-07-15 MBU2RH - Jul 15, 03:45 UTCJul 15, 05:20 UTC1h 35m
2026-07-14 MBU8TN - Jul 14, 17:55 UTCJul 14, 21:40 UTC3h 45m
2026-07-14 MBU9AG - Jul 14, 11:20 UTCJul 14, 16:20 UTC5h 0m
2026-07-14 MBU4HW - Jul 14, 07:25 UTCJul 14, 09:30 UTC2h 5m
2026-07-14 MBU7MX - Jul 14, 04:00 UTCJul 14, 06:10 UTC2h 10m
2026-07-13 MBU2VF - Jul 13, 17:25 UTCJul 13, 21:15 UTC3h 50m
2026-07-13 MBU3WL - Jul 13, 10:55 UTCJul 13, 15:40 UTC4h 45m
2026-07-13 MBU1RD - Jul 13, 07:30 UTCJul 13, 09:30 UTC2h 0m
2026-07-13 MBU2RH - Jul 13, 03:40 UTCJul 13, 05:20 UTC1h 40m

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?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
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, MBU1TF, MBU6VG, MBU6CZ.