sensors Mode-S transponder

4A1EAE

ICAO 24-bit transponder address · allocated to Romania

Currently assigned to YR-GUN · AIRBUS A220-300

Hex
4A1EAE
Octal
22417256
Decimal
4,857,518
Country
RO
Tail
YR-GUN
Type
BCS3
No current signal · last broadcast 15h ago
Flights observed
14
Distinct callsigns
12
Country
RO
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 4A1EAE.

Country allocation

The ICAO 24-bit address 4A1EAE 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 12 distinct

Callsign Airline Flights Last seen
AWG724T - 2 2026-04-13
AWG673 - 2 2026-04-14
AWG725 - 1 2026-04-13
AWG721P - 1 2026-04-13
AWG720F - 1 2026-04-13
AWG672P - 1 2026-04-14
AWG610M - 1 2026-04-14
AWG137G - 1 2026-04-13
AWG136Z - 1 2026-04-13
AWG127T - 1 2026-04-12
AWG121 Animawings 1 2026-04-13
AWG120R - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 AWG610M - Apr 14, 09:45 UTCApr 14, 11:05 UTC1h 20m
2026-04-14 AWG673 - Apr 14, 07:10 UTCApr 14, 08:30 UTC1h 20m
2026-04-14 AWG673 - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-14 AWG672P - Apr 14, 05:15 UTCApr 14, 06:05 UTC50m
2026-04-13 AWG137G - Apr 13, 18:35 UTCApr 13, 19:10 UTC35m
2026-04-13 AWG136Z - Apr 13, 16:50 UTCApr 13, 17:15 UTC25m
2026-04-13 AWG725 - Apr 13, 14:55 UTCApr 13, 15:40 UTC45m
2026-04-13 AWG720F - Apr 13, 12:25 UTCApr 13, 13:20 UTC55m
2026-04-13 AWG721P - Apr 13, 10:25 UTCApr 13, 11:30 UTC1h 5m
2026-04-13 AWG724T - Apr 13, 08:20 UTCApr 13, 08:35 UTC15m
2026-04-13 AWG724T - Apr 13, 08:00 UTCApr 13, 08:15 UTC15m
2026-04-13 AWG121 TSR → OTP Apr 13, 06:15 UTCApr 13, 06:50 UTC35m
2026-04-13 AWG120R - Apr 13, 04:25 UTCApr 13, 05:05 UTC40m
2026-04-12 AWG127T - Apr 12, 17:15 UTCApr 12, 17:30 UTC15m

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

Mode-S 4A1EAE frequently asked

What is Mode-S code 4A1EAE?
4A1EAE is an ICAO 24-bit transponder address. Allocated to Romania. Assigned to YR-GUN.
Where is Mode-S 4A1EAE registered?
Mode-S code 4A1EAE is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A1EAE broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A1EAE, octal 22417256, decimal 4,857,518.
What flights does 4A1EAE operate?
Mode-S 4A1EAE has broadcast 12 distinct callsigns, including AWG724T, AWG673, AWG725, AWG721P, AWG720F.