Apparatus

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sensors Mode-S transponder

4C0222

ICAO 24-bit transponder address · allocated to Serbia

Currently assigned to YU-ARC · AIRBUS A-330-200

Hex
4C0222
Octal
23001042
Decimal
4,981,282
Country
RS
Tail
YU-ARC
Type
A332
No current signal · last broadcast Jul 26, 03:35 UTC
Flights observed
161
Distinct callsigns
8
Country
RS
Last broadcast
Jul 26, 03:35 UTC

Last known position

Most recent position reported by Mode-S 4C0222.

Country allocation

The ICAO 24-bit address 4C0222 falls within the block assigned to Serbia (RS) by ICAO Annex 10, Volume III. Every aircraft registered in Serbia 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 8 distinct

Callsign Airline Flights Last seen
ASL989 Spurling Aviation 49 2026-07-24
ASL987 - 40 2026-07-18
ASL988 Spurling Aviation 34 2026-07-23
ASL986 - 32 2026-07-25
ASL509 - 2 2026-06-25
ASL508 - 2 2026-06-24
ASL4041 - 1 2026-07-10
ASL4040 - 1 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 ASL986 - Jul 25, 12:25 UTCJul 26, 03:35 UTC15h 10m
2026-07-24 ASL989 CAN → BEG Jul 24, 19:30 UTCJul 24, 22:45 UTC3h 15m
2026-07-24 ASL989 CAN → BEG Jul 24, 00:35 UTCJul 24, 22:45 UTC22h 10m
2026-07-23 ASL988 BEG → CAN Jul 23, 23:55 UTCJul 24, 22:30 UTC22h 35m
2026-07-21 ASL986 - Jul 21, 12:40 UTCJul 22, 03:15 UTC14h 35m
2026-07-20 ASL989 - Jul 20, 19:40 UTCJul 21, 02:10 UTC6h 29m
2026-07-20 ASL989 - Jul 20, 02:35 UTCJul 21, 02:10 UTC23h 35m
2026-07-20 ASL989 - Jul 20, 00:35 UTCJul 20, 22:50 UTC22h 15m
2026-07-20 ASL988 BEG → CAN Jul 20, 00:10 UTCJul 20, 22:30 UTC22h 20m
2026-07-18 ASL987 - Jul 18, 20:35 UTCJul 19, 15:35 UTC19h 0m
2026-07-18 ASL987 - Jul 18, 16:35 UTCJul 19, 15:35 UTC23h 0m
2026-07-18 ASL986 - Jul 18, 15:15 UTCJul 19, 14:20 UTC23h 5m
2026-07-14 ASL989 - Jul 14, 05:25 UTCJul 14, 12:05 UTC6h 40m
2026-07-13 ASL989 - Jul 13, 13:15 UTCJul 14, 12:05 UTC22h 50m
2026-07-13 ASL988 - Jul 13, 08:35 UTCJul 14, 08:30 UTC23h 55m
2026-07-13 ASL988 - Jul 13, 07:45 UTCJul 14, 06:10 UTC22h 25m
2026-07-12 ASL987 - Jul 12, 10:01 UTCJul 13, 04:20 UTC18h 20m
2026-07-12 ASL987 - Jul 12, 06:55 UTCJul 13, 04:20 UTC21h 25m
2026-07-12 ASL987 - Jul 12, 04:35 UTCJul 13, 04:20 UTC23h 45m
2026-07-10 ASL4041 - Jul 10, 13:40 UTCJul 10, 15:40 UTC2h 0m
2026-07-07 ASL4040 - Jul 7, 04:30 UTCJul 7, 06:25 UTC1h 55m
2026-07-06 ASL988 - Jul 6, 00:35 UTCJul 6, 20:25 UTC19h 50m
2026-07-05 ASL988 - Jul 5, 23:45 UTCJul 6, 20:25 UTC20h 40m
2026-07-05 ASL987 - Jul 5, 03:50 UTCJul 5, 13:30 UTC9h 40m
2026-07-04 ASL987 - Jul 4, 15:10 UTCJul 5, 13:30 UTC22h 20m
2026-07-04 ASL986 BEG → PVG Jul 4, 13:15 UTCJul 5, 12:30 UTC23h 15m
2026-06-30 ASL986 BEG → PVG Jun 30, 12:45 UTCJul 1, 07:55 UTC19h 10m
2026-06-29 ASL989 - Jun 29, 19:44 UTCJun 29, 20:35 UTC50m
2026-06-29 ASL989 - Jun 29, 00:34 UTCJun 29, 20:35 UTC20h 0m
2026-06-29 ASL988 - Jun 29, 00:00 UTCJun 29, 20:35 UTC20h 35m
2026-06-27 ASL986 BEG → PVG Jun 27, 12:34 UTCJun 28, 06:49 UTC18h 15m
2026-06-27 ASL986 BEG → PVG Jun 27, 12:25 UTCJun 28, 06:49 UTC18h 25m
2026-06-26 ASL989 - Jun 26, 20:55 UTCJun 27, 03:15 UTC6h 20m
2026-06-26 ASL989 - Jun 26, 05:19 UTCJun 27, 03:15 UTC21h 55m
2026-06-26 ASL988 - Jun 26, 00:35 UTCJun 26, 21:39 UTC21h 5m
2026-06-25 ASL988 - Jun 25, 23:49 UTCJun 26, 21:39 UTC21h 50m
2026-06-25 ASL509 - Jun 25, 04:29 UTCJun 25, 12:44 UTC8h 15m
2026-06-24 ASL508 BEG → YYZ Jun 24, 16:50 UTCJun 25, 01:54 UTC9h 5m
2026-06-24 ASL987 - Jun 24, 03:15 UTCJun 24, 12:34 UTC9h 20m
2026-06-23 ASL987 - Jun 23, 15:15 UTCJun 24, 12:34 UTC21h 20m
2026-06-23 ASL986 BEG → PVG Jun 23, 12:45 UTCJun 24, 06:59 UTC18h 15m
2026-06-23 ASL989 - Jun 23, 01:25 UTCJun 23, 02:09 UTC45m
2026-06-22 ASL988 - Jun 22, 00:34 UTCJun 22, 20:24 UTC19h 50m
2026-06-21 ASL988 - Jun 21, 23:55 UTCJun 22, 20:24 UTC20h 30m
2026-06-20 ASL986 BEG → PVG Jun 20, 13:04 UTCJun 21, 07:04 UTC18h 0m
2026-06-20 ASL989 BEG → BEG Jun 20, 02:04 UTCJun 20, 02:09 UTC5m
2026-06-19 ASL988 - Jun 19, 00:34 UTCJun 19, 20:29 UTC19h 55m
2026-06-19 ASL988 - Jun 19, 00:00 UTCJun 19, 20:29 UTC20h 29m
2026-06-18 ASL509 YYZ → BEG Jun 18, 04:35 UTCJun 18, 13:05 UTC8h 30m
2026-06-17 ASL508 BEG → YYZ Jun 17, 15:55 UTCJun 18, 01:05 UTC9h 10m

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 YU-ARC page for operator, model, and routing details .

Mode-S 4C0222 frequently asked

What is Mode-S code 4C0222?
4C0222 is an ICAO 24-bit transponder address. Allocated to Serbia. Assigned to YU-ARC.
Where is Mode-S 4C0222 registered?
Mode-S code 4C0222 is allocated to Serbia (RS). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4C0222 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 03:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4C0222, octal 23001042, decimal 4,981,282.
What flights does 4C0222 operate?
Mode-S 4C0222 has broadcast 8 distinct callsigns, including ASL989, ASL987, ASL988, ASL986, ASL509.