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sensors Mode-S transponder

4A4EAE

ICAO 24-bit transponder address · allocated to Romania

Currently assigned to YR-SUN · AIRBUS A-320

Hex
4A4EAE
Octal
22447256
Decimal
4,869,806
Country
RO
Tail
YR-SUN
Type
A320
No current signal · last broadcast 4d ago
Flights observed
394
Distinct callsigns
20
Country
RO
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 4A4EAE.

Country allocation

The ICAO 24-bit address 4A4EAE 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
HYS255 - 18 2026-07-03
HYS256 - 17 2026-07-03
HYS762 - 13 2026-06-27
HYS761 - 10 2026-06-27
HYS254 - 10 2026-06-22
HYS763 - 8 2026-06-28
HYS278 HiSky Europe 8 2026-05-25
HYS277 HiSky Europe 8 2026-05-26
HYS253 - 8 2026-06-22
HYS222 - 8 2026-07-03
HYS221 - 8 2026-07-03
HYS258 - 7 2026-06-28
HYS276 HiSky Europe 6 2026-05-31
HYS257 - 6 2026-06-28
HYS246 - 6 2026-07-10
HYS245 - 6 2026-07-10
HYM457 - 6 2026-07-05
HYS7679 - 5 2026-05-02
HYS7582 - 5 2026-06-26
HYS7581 - 5 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 HYS246 BRU → OTP Jul 10, 11:05 UTCJul 10, 13:15 UTC2h 10m
2026-07-10 HYS245 - Jul 10, 07:10 UTCJul 10, 09:50 UTC2h 40m
2026-07-09 HYM422 - Jul 9, 12:50 UTCJul 9, 13:30 UTC40m
2026-07-05 HYM458 - Jul 5, 21:40 UTCJul 6, 00:00 UTC2h 20m
2026-07-05 HYM457 - Jul 5, 18:50 UTCJul 5, 20:05 UTC1h 15m
2026-07-05 HYS446 - Jul 5, 14:15 UTCJul 5, 16:30 UTC2h 15m
2026-07-05 HYS225 - Jul 5, 10:55 UTCJul 5, 13:10 UTC2h 15m
2026-07-05 HYS226 - Jul 5, 08:00 UTCJul 5, 09:55 UTC1h 55m
2026-07-05 HYS445 - Jul 5, 04:30 UTCJul 5, 06:55 UTC2h 25m
2026-07-04 HYS474 - Jul 4, 23:25 UTCJul 5, 02:15 UTC2h 50m
2026-07-04 HYS243 - Jul 4, 19:05 UTCJul 4, 22:30 UTC3h 25m
2026-07-04 HYS244 - Jul 4, 15:15 UTCJul 4, 17:55 UTC2h 40m
2026-07-04 HYS473 - Jul 4, 10:15 UTCJul 4, 13:55 UTC3h 40m
2026-07-04 HYM484 - Jul 4, 07:10 UTCJul 4, 08:45 UTC1h 35m
2026-07-04 HYM483 - Jul 4, 04:00 UTCJul 4, 06:00 UTC2h 0m
2026-07-03 HYS482 - Jul 3, 18:10 UTCJul 3, 18:40 UTC30m
2026-07-03 HYS256 - Jul 3, 16:30 UTCJul 3, 17:05 UTC35m
2026-07-03 HYS255 - Jul 3, 15:15 UTCJul 3, 15:50 UTC35m
2026-07-03 HYS222 - Jul 3, 12:00 UTCJul 3, 14:15 UTC2h 15m
2026-07-03 HYS221 - Jul 3, 07:25 UTCJul 3, 10:05 UTC2h 40m
2026-07-03 HYS481 - Jul 3, 05:05 UTCJul 3, 05:40 UTC35m
2026-07-02 HYM458 - Jul 2, 21:55 UTCJul 3, 00:10 UTC2h 15m
2026-07-02 HYM457 - Jul 2, 17:50 UTCJul 2, 20:10 UTC2h 20m
2026-07-02 HYS446 - Jul 2, 13:50 UTCJul 2, 16:10 UTC2h 20m
2026-07-02 HYS225 - Jul 2, 10:30 UTCJul 2, 12:35 UTC2h 5m
2026-07-02 HYS226 - Jul 2, 07:40 UTCJul 2, 09:35 UTC1h 55m
2026-07-02 HYS445 - Jul 2, 04:35 UTCJul 2, 06:35 UTC2h 0m
2026-07-01 HYS474 - Jul 1, 23:50 UTCJul 2, 02:50 UTC3h 0m
2026-07-01 HYS243 - Jul 1, 19:20 UTCJul 1, 22:40 UTC3h 20m
2026-07-01 HYS244 - Jul 1, 15:10 UTCJul 1, 18:10 UTC3h 0m
2026-07-01 HYS473 - Jul 1, 10:25 UTCJul 1, 13:50 UTC3h 25m
2026-07-01 HYM484 - Jul 1, 07:10 UTCJul 1, 09:00 UTC1h 50m
2026-07-01 HYM483 - Jul 1, 03:40 UTCJul 1, 05:35 UTC1h 55m
2026-06-30 HYM458 - Jun 30, 22:35 UTCJul 1, 00:50 UTC2h 15m
2026-06-30 HYM457 - Jun 30, 18:40 UTCJun 30, 20:55 UTC2h 15m
2026-06-30 HYS446 - Jun 30, 14:50 UTCJun 30, 17:15 UTC2h 25m
2026-06-30 HYS445 - Jun 30, 10:35 UTCJun 30, 13:10 UTC2h 35m
2026-06-30 HYS482 - Jun 30, 08:50 UTCJun 30, 09:20 UTC30m
2026-06-30 HYS8240 - Jun 30, 04:20 UTCJun 30, 05:20 UTC1h 0m
2026-06-30 HYS8239 - Jun 30, 01:55 UTCJun 30, 02:50 UTC55m
2026-06-29 HYS8142 - Jun 29, 19:49 UTCJun 29, 21:09 UTC1h 20m
2026-06-29 HYS8149 - Jun 29, 16:55 UTCJun 29, 18:25 UTC1h 30m
2026-06-29 HYS8150 - Jun 29, 14:25 UTCJun 29, 16:00 UTC1h 35m
2026-06-29 HYS8143 - Jun 29, 11:14 UTCJun 29, 12:49 UTC1h 35m
2026-06-29 HYS8144 - Jun 29, 06:05 UTCJun 29, 07:34 UTC1h 30m
2026-06-29 HYS8141 - Jun 29, 03:25 UTCJun 29, 04:50 UTC1h 25m
2026-06-28 HYS258 - Jun 28, 22:59 UTCJun 29, 02:20 UTC3h 20m
2026-06-28 HYS257 - Jun 28, 18:05 UTCJun 28, 21:24 UTC3h 20m
2026-06-28 HYS256 - Jun 28, 16:14 UTCJun 28, 16:55 UTC40m
2026-06-28 HYS255 - Jun 28, 14:45 UTCJun 28, 15:14 UTC30m

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

Mode-S 4A4EAE frequently asked

What is Mode-S code 4A4EAE?
4A4EAE is an ICAO 24-bit transponder address. Allocated to Romania. Assigned to YR-SUN.
Where is Mode-S 4A4EAE registered?
Mode-S code 4A4EAE is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A4EAE broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A4EAE, octal 22447256, decimal 4,869,806.
What flights does 4A4EAE operate?
Mode-S 4A4EAE has broadcast 20 distinct callsigns, including HYS255, HYS256, HYS762, HYS761, HYS254.