sensors Mode-S transponder

4A4AAE

ICAO 24-bit transponder address · allocated to Romania

Currently assigned to YR-RUN · AIRBUS A220-300

Hex
4A4AAE
Octal
22445256
Decimal
4,868,782
Country
RO
Tail
YR-RUN
Type
BCS3
No current signal · last broadcast 21h ago
Flights observed
9
Distinct callsigns
7
Country
RO
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 4A4AAE.

Country allocation

The ICAO 24-bit address 4A4AAE 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 7 distinct

Callsign Airline Flights Last seen
AWG4105 - 3 2026-04-13
AWG673 - 1 2026-04-12
AWG672P - 1 2026-04-12
AWG4213 - 1 2026-04-13
AWG4212 - 1 2026-04-13
AWG4104 - 1 2026-04-13
AWG101L - 1 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 AWG101L - Apr 14, 05:45 UTCApr 14, 06:15 UTC30m
2026-04-13 AWG4105 - Apr 13, 19:50 UTCApr 13, 21:10 UTC1h 20m
2026-04-13 AWG4105 - Apr 13, 18:25 UTCApr 13, 19:55 UTC1h 30m
2026-04-13 AWG4105 - Apr 13, 15:50 UTCApr 13, 19:45 UTC3h 55m
2026-04-13 AWG4212 - Apr 13, 13:20 UTCApr 13, 15:55 UTC2h 35m
2026-04-13 AWG4213 - Apr 13, 09:15 UTCApr 13, 11:55 UTC2h 40m
2026-04-13 AWG4104 - Apr 13, 04:30 UTCApr 13, 06:45 UTC2h 15m
2026-04-12 AWG673 - Apr 12, 19:05 UTCApr 12, 20:15 UTC1h 10m
2026-04-12 AWG672P - Apr 12, 17:15 UTCApr 12, 18:05 UTC50m

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

Mode-S 4A4AAE frequently asked

What is Mode-S code 4A4AAE?
4A4AAE is an ICAO 24-bit transponder address. Allocated to Romania. Assigned to YR-RUN.
Where is Mode-S 4A4AAE registered?
Mode-S code 4A4AAE is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A4AAE broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A4AAE, octal 22445256, decimal 4,868,782.
What flights does 4A4AAE operate?
Mode-S 4A4AAE has broadcast 7 distinct callsigns, including AWG4105, AWG673, AWG672P, AWG4213, AWG4212.