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sensors Mode-S transponder

4A09B2

ICAO 24-bit transponder address · allocated to Romania

Currently assigned to YR-BMR · BOEING 737-700

Hex
4A09B2
Octal
22404662
Decimal
4,852,146
Country
RO
Tail
YR-BMR
Type
B737
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
744
Distinct callsigns
20
Country
RO
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S 4A09B2.

Country allocation

The ICAO 24-bit address 4A09B2 falls within the block assigned to Romania (RO) by ICAO Annex 10, Volume III. Every aircraft registered in Romania 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
AEZ8765 Aerial Transit Company 35 2026-07-24
AEZ41ST Aerial Transit Company 35 2026-07-24
AEZ22LO Aerial Transit Company 35 2026-07-26
AEZ70MH Aerial Transit Company 34 2026-07-26
AEZ8041 Aerial Transit Company 33 2026-07-24
AEZ12RG Aerial Transit Company 32 2026-07-26
AEZ48LG Aerial Transit Company 31 2026-07-24
AEZ2349 Aerial Transit Company 30 2026-07-26
AEZ2119 - 25 2026-07-16
AEZ2114 Aerial Transit Company 25 2026-07-17
AEZ965S - 21 2026-07-16
AEZ300Z Aerial Transit Company 21 2026-06-06
AEZ218D - 21 2026-07-16
AEZ2121 - 21 2026-07-16
AEZ2118 - 21 2026-07-16
AEZ44GR Aerial Transit Company 20 2026-05-30
AEZ112X Aerial Transit Company 19 2026-07-26
AEZ2126 - 16 2026-07-12
AEZ81GR Aerial Transit Company 15 2026-06-21
AEZ2127 - 15 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AEZ2349 FCO → CAG Jul 26, 20:20 UTCJul 26, 20:55 UTC35m
2026-07-26 AEZ70MH CAG → FCO Jul 26, 18:20 UTCJul 26, 18:55 UTC35m
2026-07-26 AEZ12RG FCO → CAG Jul 26, 16:20 UTCJul 26, 17:00 UTC40m
2026-07-26 AEZ22LO CAG → FCO Jul 26, 14:30 UTCJul 26, 15:10 UTC40m
2026-07-26 AEZ112X FCO → CAG Jul 26, 12:30 UTCJul 26, 12:55 UTC25m
2026-07-26 AEZ60RG CAG → FCO Jul 26, 10:35 UTCJul 26, 11:10 UTC35m
2026-07-26 AEZ7117 - Jul 26, 08:40 UTCJul 26, 09:10 UTC30m
2026-07-26 AEZ20GR CAG → FCO Jul 26, 05:45 UTCJul 26, 06:20 UTC35m
2026-07-25 AEZ2349 FCO → CAG Jul 25, 20:20 UTCJul 25, 20:55 UTC35m
2026-07-25 AEZ70MH CAG → FCO Jul 25, 18:20 UTCJul 25, 18:55 UTC35m
2026-07-25 AEZ12RG FCO → CAG Jul 25, 16:40 UTCJul 25, 17:10 UTC30m
2026-07-25 AEZ22LO CAG → FCO Jul 25, 14:55 UTCJul 25, 15:30 UTC35m
2026-07-25 AEZ2389 SUF → CAG Jul 25, 12:40 UTCJul 25, 13:25 UTC45m
2026-07-25 AEZ2388 CAG → SUF Jul 25, 10:45 UTCJul 25, 11:30 UTC45m
2026-07-25 AEZ7117 - Jul 25, 08:45 UTCJul 25, 09:20 UTC35m
2026-07-25 AEZ20GR CAG → FCO Jul 25, 05:40 UTCJul 25, 06:25 UTC45m
2026-07-24 AEZ842V - Jul 24, 20:45 UTCJul 24, 21:40 UTC55m
2026-07-24 AEZ2364 CAG → LIN Jul 24, 18:40 UTCJul 24, 19:40 UTC1h 0m
2026-07-24 AEZ69FS - Jul 24, 16:30 UTCJul 24, 17:25 UTC55m
2026-07-24 AEZ75HH - Jul 24, 14:15 UTCJul 24, 15:20 UTC1h 5m
2026-07-24 AEZ8765 LIN → CAG Jul 24, 11:40 UTCJul 24, 12:30 UTC50m
2026-07-24 AEZ41ST CAG → LIN Jul 24, 09:10 UTCJul 24, 10:15 UTC1h 5m
2026-07-24 AEZ8041 LIN → CAG Jul 24, 06:20 UTCJul 24, 07:10 UTC50m
2026-07-24 AEZ48LG CAG → LIN Jul 24, 04:05 UTCJul 24, 05:15 UTC1h 10m
2026-07-23 AEZ842V - Jul 23, 20:15 UTCJul 23, 21:05 UTC50m
2026-07-23 AEZ2364 CAG → LIN Jul 23, 18:05 UTCJul 23, 19:05 UTC1h 0m
2026-07-23 AEZ69FS - Jul 23, 15:45 UTCJul 23, 16:55 UTC1h 10m
2026-07-23 AEZ75HH CAG → LIN Jul 23, 13:35 UTCJul 23, 14:40 UTC1h 5m
2026-07-23 AEZ8662 CAG → FCO Jul 23, 07:35 UTCJul 23, 08:30 UTC55m
2026-07-23 AEZ94GL CAG → LIN Jul 23, 05:20 UTCJul 23, 06:20 UTC1h 0m
2026-07-22 AEZ842V - Jul 22, 21:10 UTCJul 22, 22:05 UTC55m
2026-07-22 AEZ2364 CAG → LIN Jul 22, 18:50 UTCJul 22, 19:55 UTC1h 5m
2026-07-22 AEZ69FS - Jul 22, 16:30 UTCJul 22, 17:20 UTC50m
2026-07-22 AEZ75HH - Jul 22, 14:20 UTCJul 22, 15:20 UTC1h 0m
2026-07-22 AEZ8765 - Jul 22, 11:50 UTCJul 22, 12:45 UTC55m
2026-07-21 AEZ2367 - Jul 21, 20:35 UTCJul 21, 21:25 UTC50m
2026-07-21 AEZ49KF CAG → LIN Jul 21, 18:40 UTCJul 21, 19:35 UTC55m
2026-07-21 AEZ12RG - Jul 21, 16:30 UTCJul 21, 17:10 UTC40m
2026-07-21 AEZ22LO - Jul 21, 14:40 UTCJul 21, 15:15 UTC35m
2026-07-21 AEZ8765 - Jul 21, 12:10 UTCJul 21, 13:05 UTC55m
2026-07-21 AEZ41ST CAG → LIN Jul 21, 09:50 UTCJul 21, 10:50 UTC1h 0m
2026-07-21 AEZ8662 CAG → FCO Jul 21, 07:20 UTCJul 21, 08:20 UTC1h 0m
2026-07-21 AEZ94GL - Jul 21, 05:15 UTCJul 21, 06:15 UTC1h 0m
2026-07-20 AEZ2349 - Jul 20, 20:25 UTCJul 20, 20:50 UTC25m
2026-07-20 AEZ70MH CAG → FCO Jul 20, 18:25 UTCJul 20, 19:05 UTC40m
2026-07-20 AEZ12RG - Jul 20, 16:00 UTCJul 20, 16:30 UTC30m
2026-07-20 AEZ22LO - Jul 20, 14:05 UTCJul 20, 14:40 UTC35m
2026-07-20 AEZ7117 - Jul 20, 08:10 UTCJul 20, 08:40 UTC30m
2026-07-20 AEZ20GR CAG → FCO Jul 20, 05:45 UTCJul 20, 06:30 UTC45m
2026-07-19 AEZ2349 - Jul 19, 20:25 UTCJul 19, 20:50 UTC25m

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 YR-BMR page for operator, model, and routing details .

Mode-S 4A09B2 frequently asked

What is Mode-S code 4A09B2?
4A09B2 is an ICAO 24-bit transponder address. Allocated to Romania. Assigned to YR-BMR.
Where is Mode-S 4A09B2 registered?
Mode-S code 4A09B2 is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A09B2 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 4A09B2, octal 22404662, decimal 4,852,146.
What flights does 4A09B2 operate?
Mode-S 4A09B2 has broadcast 20 distinct callsigns, including AEZ8765, AEZ41ST, AEZ22LO, AEZ70MH, AEZ8041.