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sensors Mode-S transponder

4A0D12

ICAO 24-bit transponder address · allocated to Romania

Currently assigned to YR-CHR · AIRBUS A220-100

Hex
4A0D12
Octal
22406422
Decimal
4,853,010
Country
RO
Tail
YR-CHR
Type
BCS1
No current signal · last broadcast 7d ago
Flights observed
445
Distinct callsigns
20
Country
RO
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S 4A0D12.

Country allocation

The ICAO 24-bit address 4A0D12 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
AWG100 - 24 2026-06-29
AWG101L - 22 2026-06-29
AWG655 - 19 2026-07-03
AWG654R - 19 2026-07-03
AWG681 Animawings 18 2026-07-03
AWG680H - 18 2026-07-03
AWG601K - 16 2026-06-28
AWG600N - 14 2026-06-28
AWG137G Animawings 13 2026-07-01
AWG136Z Animawings 13 2026-07-01
AWG117L - 11 2026-07-01
AWG116P Animawings 11 2026-07-01
AWG107R - 11 2026-06-28
AWG651R - 10 2026-07-07
AWG121 - 10 2026-07-07
AWG650 - 9 2026-07-07
AWG120R - 9 2026-07-07
AWG106Q - 9 2026-06-28
AWG725 - 7 2026-07-06
AWG724T - 7 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-07 AWG4127 RHO → OTP Jul 7, 18:10 UTCJul 7, 19:45 UTC1h 35m
2026-07-07 AWG4126 - Jul 7, 15:40 UTCJul 7, 17:10 UTC1h 30m
2026-07-07 AWG651R LGW → OTP Jul 7, 11:50 UTCJul 7, 14:30 UTC2h 40m
2026-07-07 AWG650 - Jul 7, 07:20 UTCJul 7, 10:35 UTC3h 15m
2026-07-07 AWG121 - Jul 7, 05:40 UTCJul 7, 06:15 UTC35m
2026-07-07 AWG120R - Jul 7, 04:00 UTCJul 7, 04:30 UTC30m
2026-07-06 AWG725 - Jul 6, 17:00 UTCJul 6, 17:45 UTC45m
2026-07-06 AWG724T - Jul 6, 14:40 UTCJul 6, 15:35 UTC55m
2026-07-06 AWG6001 MST → SOF Jul 6, 12:20 UTCJul 6, 13:00 UTC40m
2026-07-06 AWG721P IST → TSR Jul 6, 10:00 UTCJul 6, 11:00 UTC1h 0m
2026-07-06 AWG720F - Jul 6, 07:40 UTCJul 6, 08:55 UTC1h 15m
2026-07-06 AWG120R - Jul 6, 06:00 UTCJul 6, 06:35 UTC35m
2026-07-06 AWG121 - Jul 6, 03:55 UTCJul 6, 04:30 UTC35m
2026-07-05 AWG4313 PMI → TSR Jul 5, 20:45 UTCJul 5, 22:55 UTC2h 10m
2026-07-05 AWG4312 TSR → PMI Jul 5, 16:55 UTCJul 5, 19:25 UTC2h 30m
2026-07-05 AWG741 ATH → CLJ Jul 5, 12:55 UTCJul 5, 14:10 UTC1h 15m
2026-07-05 AWG742P - Jul 5, 09:45 UTCJul 5, 11:15 UTC1h 30m
2026-07-05 AWG743Q - Jul 5, 06:35 UTCJul 5, 07:55 UTC1h 20m
2026-07-05 AWG740A - Jul 5, 04:00 UTCJul 5, 05:20 UTC1h 20m
2026-07-04 AWG4129 RHO → TSR Jul 4, 18:55 UTCJul 4, 20:40 UTC1h 45m
2026-07-04 AWG4174 IAS → RHO Jul 4, 15:55 UTCJul 4, 17:45 UTC1h 50m
2026-07-04 AWG4175 RHO → IAS Jul 4, 13:00 UTCJul 4, 14:45 UTC1h 45m
2026-07-04 AWG4128 TSR → RHO Jul 4, 10:20 UTCJul 4, 12:00 UTC1h 40m
2026-07-04 AWG6000 - Jul 4, 08:15 UTCJul 4, 08:50 UTC35m
2026-07-03 AWG655 - Jul 3, 22:10 UTCJul 4, 00:35 UTC2h 25m
2026-07-03 AWG654R - Jul 3, 17:40 UTCJul 3, 20:55 UTC3h 15m
2026-07-03 AWG681 GVA → OTP Jul 3, 14:20 UTCJul 3, 16:25 UTC2h 5m
2026-07-03 AWG680H - Jul 3, 10:45 UTCJul 3, 13:10 UTC2h 25m
2026-07-03 AWG621R - Jul 3, 07:20 UTCJul 3, 08:55 UTC1h 35m
2026-07-03 AWG620Q - Jul 3, 04:25 UTCJul 3, 06:05 UTC1h 40m
2026-07-02 AWG6001 MST → SOF Jul 2, 20:25 UTCJul 2, 21:05 UTC40m
2026-07-02 AWG126 OTP → TSR Jul 2, 19:05 UTCJul 2, 19:40 UTC35m
2026-07-02 AWG127T TSR → OTP Jul 2, 17:15 UTCJul 2, 17:55 UTC40m
2026-07-02 AWG741 ATH → CLJ Jul 2, 16:00 UTCJul 2, 16:20 UTC20m
2026-07-02 AWG741 ATH → CLJ Jul 2, 13:20 UTCJul 2, 14:50 UTC1h 30m
2026-07-02 AWG740A - Jul 2, 10:10 UTCJul 2, 11:40 UTC1h 30m
2026-07-02 AWG740A - Jul 2, 08:20 UTCJul 2, 08:40 UTC20m
2026-07-02 AWG120R - Jul 2, 04:10 UTCJul 2, 04:45 UTC35m
2026-07-01 AWG137G IAS → OTP Jul 1, 20:45 UTCJul 1, 20:55 UTC10m
2026-07-01 AWG136Z OTP → IAS Jul 1, 19:00 UTCJul 1, 19:25 UTC25m
2026-07-01 AWG117L OMR → OTP Jul 1, 17:05 UTCJul 1, 17:55 UTC50m
2026-07-01 AWG116P OTP → OMR Jul 1, 15:15 UTCJul 1, 16:10 UTC55m
2026-07-01 AWG631 IBZ → OTP Jul 1, 10:45 UTCJul 1, 13:40 UTC2h 55m
2026-07-01 AWG630X - Jul 1, 05:50 UTCJul 1, 08:35 UTC2h 45m
2026-07-01 AWG121 - Jul 1, 04:00 UTCJul 1, 04:45 UTC45m
2026-06-30 AWG126 OTP → TSR Jun 30, 22:05 UTCJun 30, 22:40 UTC35m
2026-06-30 AWG127T TSR → OTP Jun 30, 19:10 UTCJun 30, 20:05 UTC55m
2026-06-30 AWG127T TSR → OTP Jun 30, 16:50 UTCJun 30, 18:00 UTC1h 10m
2026-06-30 AWG641Q - Jun 30, 14:10 UTCJun 30, 15:30 UTC1h 20m
2026-06-30 AWG644 - Jun 30, 10:45 UTCJun 30, 12:35 UTC1h 50m

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-CHR page for operator, model, and routing details .

Mode-S 4A0D12 frequently asked

What is Mode-S code 4A0D12?
4A0D12 is an ICAO 24-bit transponder address. Allocated to Romania. Assigned to YR-CHR.
Where is Mode-S 4A0D12 registered?
Mode-S code 4A0D12 is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A0D12 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A0D12, octal 22406422, decimal 4,853,010.
What flights does 4A0D12 operate?
Mode-S 4A0D12 has broadcast 20 distinct callsigns, including AWG100, AWG101L, AWG655, AWG654R, AWG681.