Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4A08A5

ICAO 24-bit transponder address · allocated to Romania

Currently assigned to YR-BEE · AIRBUS A-320

Hex
4A08A5
Octal
22404245
Decimal
4,851,877
Country
RO
Tail
YR-BEE
Type
A320
No current signal · last broadcast 36m ago
Flights observed
325
Distinct callsigns
20
Country
RO
Last broadcast
36m ago

Last known position

Most recent position reported by Mode-S 4A08A5.

Country allocation

The ICAO 24-bit address 4A08A5 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
HYS275 HiSky Europe 10 2026-07-09
HYS276 HiSky Europe 8 2026-06-18
HYS258 - 8 2026-07-10
HYS257 - 8 2026-07-10
HYS761 - 7 2026-07-10
HYS278 - 7 2026-07-06
HYS762 - 6 2026-07-04
HYS256 - 6 2026-07-10
HYS255 - 6 2026-07-10
HYS254 - 6 2026-06-29
HYS253 - 6 2026-06-29
HYS277 - 5 2026-06-20
HYS252 HiSky Europe 5 2026-06-18
HYS251 HiSky Europe 5 2026-06-18
HYS8682 - 4 2026-07-11
HYS8681 - 4 2026-07-11
HYS8144 - 4 2026-07-13
HYS8143 - 4 2026-07-13
HYS8142 - 4 2026-07-13
HYS8141 - 4 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 HYS8239 - Jul 14, 01:55 UTCJul 14, 02:50 UTC55m
2026-07-13 HYS8142 - Jul 13, 20:10 UTCJul 13, 21:30 UTC1h 20m
2026-07-13 HYS8149 - Jul 13, 17:25 UTCJul 13, 18:45 UTC1h 20m
2026-07-13 HYS8150 - Jul 13, 15:05 UTCJul 13, 16:40 UTC1h 35m
2026-07-13 HYS8143 - Jul 13, 11:55 UTCJul 13, 13:25 UTC1h 30m
2026-07-13 HYS8144 - Jul 13, 05:05 UTCJul 13, 06:30 UTC1h 25m
2026-07-13 HYS8141 - Jul 13, 02:30 UTCJul 13, 03:55 UTC1h 25m
2026-07-12 HYS7726 LCA → OTP Jul 12, 21:25 UTCJul 12, 23:15 UTC1h 50m
2026-07-12 HYS7729 - Jul 12, 18:25 UTCJul 12, 20:30 UTC2h 5m
2026-07-12 HYS7730 LCA → TSR Jul 12, 15:10 UTCJul 12, 17:20 UTC2h 10m
2026-07-12 HYS7725 - Jul 12, 12:20 UTCJul 12, 14:05 UTC1h 45m
2026-07-12 HYS236 - Jul 12, 09:05 UTCJul 12, 11:15 UTC2h 10m
2026-07-12 HYS235 - Jul 12, 05:30 UTCJul 12, 07:40 UTC2h 10m
2026-07-11 HYS8682 - Jul 11, 21:55 UTCJul 11, 23:45 UTC1h 50m
2026-07-11 HYS8681 - Jul 11, 18:35 UTCJul 11, 20:50 UTC2h 15m
2026-07-11 HYS7622 - Jul 11, 16:10 UTCJul 11, 17:30 UTC1h 20m
2026-07-11 HYS7693 - Jul 11, 13:15 UTCJul 11, 14:55 UTC1h 40m
2026-07-11 HYS7694 - Jul 11, 10:30 UTCJul 11, 12:10 UTC1h 40m
2026-07-11 HYS7621 - Jul 11, 08:05 UTCJul 11, 09:25 UTC1h 20m
2026-07-11 HYS8620 - Jul 11, 05:35 UTCJul 11, 06:50 UTC1h 15m
2026-07-11 HYS8619 - Jul 11, 03:15 UTCJul 11, 04:35 UTC1h 20m
2026-07-10 HYS258 - Jul 10, 23:00 UTCJul 11, 02:05 UTC3h 5m
2026-07-10 HYS257 - Jul 10, 18:00 UTCJul 10, 21:35 UTC3h 35m
2026-07-10 HYS256 - Jul 10, 16:15 UTCJul 10, 16:45 UTC30m
2026-07-10 HYS255 - Jul 10, 14:45 UTCJul 10, 15:25 UTC40m
2026-07-10 HYS222 - Jul 10, 11:30 UTCJul 10, 13:40 UTC2h 10m
2026-07-10 HYS221 - Jul 10, 07:05 UTCJul 10, 09:50 UTC2h 45m
2026-07-10 HYS761 - Jul 10, 05:20 UTCJul 10, 06:00 UTC40m
2026-07-10 HYS764 - Jul 10, 04:05 UTCJul 10, 04:50 UTC45m
2026-07-09 HYS238 TLV → OTP Jul 9, 22:15 UTCJul 10, 00:20 UTC2h 5m
2026-07-09 HYS237 - Jul 9, 18:25 UTCJul 9, 20:40 UTC2h 15m
2026-07-09 HYS275 CLJ → OTP Jul 9, 16:20 UTCJul 9, 16:50 UTC30m
2026-07-09 HYS5472 - Jul 9, 12:50 UTCJul 9, 15:00 UTC2h 10m
2026-07-09 HYS5471 - Jul 9, 09:35 UTCJul 9, 11:40 UTC2h 5m
2026-07-09 HYS7974 - Jul 9, 04:45 UTCJul 9, 06:10 UTC1h 25m
2026-07-09 HYS7973 - Jul 9, 02:15 UTCJul 9, 03:45 UTC1h 30m
2026-07-08 HYS7344 - Jul 8, 19:45 UTCJul 8, 21:20 UTC1h 35m
2026-07-08 HYS7345 - Jul 8, 16:45 UTCJul 8, 18:20 UTC1h 35m
2026-07-08 HYS7346 - Jul 8, 14:00 UTCJul 8, 15:35 UTC1h 35m
2026-07-08 HYS7343 CLJ → HER Jul 8, 11:00 UTCJul 8, 12:30 UTC1h 30m
2026-07-08 HYS5384 - Jul 8, 07:30 UTCJul 8, 09:35 UTC2h 5m
2026-07-08 HYS5383 - Jul 8, 04:20 UTCJul 8, 06:20 UTC2h 0m
2026-07-07 HYS5284 MIR → CLJ Jul 7, 19:20 UTCJul 7, 21:15 UTC1h 55m
2026-07-07 HYS7283 - Jul 7, 16:15 UTCJul 7, 18:25 UTC2h 10m
2026-07-07 HYS7284 - Jul 7, 13:10 UTCJul 7, 15:00 UTC1h 50m
2026-07-07 HYS5283 - Jul 7, 10:00 UTCJul 7, 11:55 UTC1h 55m
2026-07-07 HYS7234 - Jul 7, 07:05 UTCJul 7, 08:50 UTC1h 45m
2026-07-07 HYS7233 - Jul 7, 04:05 UTCJul 7, 05:45 UTC1h 40m
2026-07-06 HYS5184 - Jul 6, 18:50 UTCJul 6, 20:45 UTC1h 55m
2026-07-06 HYS5183 - Jul 6, 14:55 UTCJul 6, 16:45 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-BEE page for operator, model, and routing details .

Mode-S 4A08A5 frequently asked

What is Mode-S code 4A08A5?
4A08A5 is an ICAO 24-bit transponder address. Allocated to Romania. Assigned to YR-BEE.
Where is Mode-S 4A08A5 registered?
Mode-S code 4A08A5 is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A08A5 broadcasting right now?
No active broadcast right now. Last signal was 36m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A08A5, octal 22404245, decimal 4,851,877.
What flights does 4A08A5 operate?
Mode-S 4A08A5 has broadcast 20 distinct callsigns, including HYS275, HYS276, HYS258, HYS257, HYS761.