Apparatus

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sensors Mode-S transponder

4C0263

ICAO 24-bit transponder address · allocated to Serbia

Currently assigned to YU-ATD · EMBRAER ERJ-190-200

Hex
4C0263
Octal
23001143
Decimal
4,981,347
Country
RS
Tail
YU-ATD
Type
E195
No current signal · last broadcast 2h ago
Flights observed
422
Distinct callsigns
20
Country
RS
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4C0263.

Country allocation

The ICAO 24-bit address 4C0263 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 20 distinct

Callsign Airline Flights Last seen
ASL90A Spurling Aviation 14 2026-07-07
ASL27L Spurling Aviation 14 2026-07-07
ASL73B Spurling Aviation 13 2026-05-27
ASL32A Spurling Aviation 13 2026-05-27
ASL65F - 12 2026-07-03
ASL88G - 11 2026-07-14
ASL96D - 10 2026-07-11
ASL94D - 10 2026-06-27
ASL82X - 10 2026-07-14
ASL68Z - 10 2026-07-03
ASL64T Spurling Aviation 10 2026-07-13
ASL64R - 10 2026-07-11
ASL46G - 10 2026-07-13
ASL20A Spurling Aviation 10 2026-07-08
ASL84H - 9 2026-07-12
ASL81K - 9 2026-07-12
ASL58F Spurling Aviation 9 2026-07-08
ASL19P - 9 2026-06-27
ASL75K - 8 2026-07-09
ASL20T - 8 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASL88G ZRH → BEG Jul 14, 07:40 UTCJul 14, 09:00 UTC1h 20m
2026-07-14 ASL82X BEG → ZRH Jul 14, 05:00 UTCJul 14, 06:35 UTC1h 35m
2026-07-13 ASL18A - Jul 13, 19:10 UTCJul 13, 20:45 UTC1h 35m
2026-07-13 ASL4360 BEG → DUS Jul 13, 15:35 UTCJul 13, 17:30 UTC1h 55m
2026-07-13 ASL64T SKG → BEG Jul 13, 13:35 UTCJul 13, 14:30 UTC55m
2026-07-13 ASL46G BEG → SKG Jul 13, 11:40 UTCJul 13, 12:35 UTC55m
2026-07-12 ASL14A ATH → BEG Jul 12, 19:05 UTCJul 12, 20:30 UTC1h 25m
2026-07-12 ASL46F BEG → ATH Jul 12, 16:35 UTCJul 12, 17:50 UTC1h 15m
2026-07-12 ASL66M - Jul 12, 13:20 UTCJul 12, 14:45 UTC1h 25m
2026-07-12 ASL40E - Jul 12, 10:40 UTCJul 12, 12:05 UTC1h 25m
2026-07-12 ASL81K - Jul 12, 07:01 UTCJul 12, 07:35 UTC35m
2026-07-12 ASL84H - Jul 12, 04:55 UTCJul 12, 05:20 UTC25m
2026-07-11 ASL98C ZRH → BEG Jul 11, 19:10 UTCJul 11, 20:30 UTC1h 20m
2026-07-11 ASL90F BEG → ZRH Jul 11, 16:45 UTCJul 11, 18:15 UTC1h 30m
2026-07-11 ASL96D ATH → BEG Jul 11, 14:25 UTCJul 11, 15:45 UTC1h 20m
2026-07-11 ASL64R BEG → ATH Jul 11, 11:45 UTCJul 11, 13:05 UTC1h 20m
2026-07-10 ASL14A ATH → BEG Jul 10, 18:45 UTCJul 10, 20:05 UTC1h 20m
2026-07-10 ASL46F BEG → ATH Jul 10, 16:40 UTCJul 10, 17:50 UTC1h 10m
2026-07-10 ASL96D ATH → BEG Jul 10, 14:00 UTCJul 10, 15:20 UTC1h 20m
2026-07-10 ASL64R BEG → ATH Jul 10, 11:20 UTCJul 10, 12:30 UTC1h 10m
2026-07-10 ASL20K - Jul 10, 07:45 UTCJul 10, 08:55 UTC1h 10m
2026-07-10 ASL42A - Jul 10, 04:50 UTCJul 10, 06:05 UTC1h 15m
2026-07-09 ASL75K FRA → BEG Jul 9, 18:50 UTCJul 9, 20:10 UTC1h 20m
2026-07-09 ASL20T BEG → FRA Jul 9, 15:40 UTCJul 9, 17:30 UTC1h 50m
2026-07-09 ASL64T SKG → BEG Jul 9, 13:20 UTCJul 9, 14:15 UTC55m
2026-07-09 ASL46G BEG → SKG Jul 9, 11:25 UTCJul 9, 12:15 UTC50m
2026-07-09 ASL88G ZRH → BEG Jul 9, 07:45 UTCJul 9, 09:10 UTC1h 25m
2026-07-09 ASL82X BEG → ZRH Jul 9, 05:05 UTCJul 9, 06:35 UTC1h 30m
2026-07-08 ASL20A BEG → TBS Jul 8, 18:35 UTCJul 8, 20:10 UTC1h 35m
2026-07-08 ASL58F BEG → AGP Jul 8, 15:45 UTCJul 8, 17:35 UTC1h 50m
2026-07-08 ASL96D ATH → BEG Jul 8, 13:15 UTCJul 8, 14:35 UTC1h 20m
2026-07-08 ASL64R BEG → ATH Jul 8, 10:40 UTCJul 8, 12:00 UTC1h 20m
2026-07-08 ASL88G ZRH → BEG Jul 8, 08:05 UTCJul 8, 09:20 UTC1h 15m
2026-07-08 ASL82X BEG → ZRH Jul 8, 05:15 UTCJul 8, 06:50 UTC1h 35m
2026-07-07 ASL98C ZRH → BEG Jul 7, 18:50 UTCJul 7, 20:15 UTC1h 25m
2026-07-07 ASL90F BEG → ZRH Jul 7, 16:20 UTCJul 7, 17:45 UTC1h 25m
2026-07-07 ASL27L DBV → BEG Jul 7, 13:30 UTCJul 7, 14:10 UTC40m
2026-07-07 ASL90A BEG → DBV Jul 7, 12:05 UTCJul 7, 12:40 UTC35m
2026-07-07 ASL99L - Jul 7, 10:15 UTCJul 7, 10:45 UTC30m
2026-07-07 ASL52N BEG → TIV Jul 7, 08:30 UTCJul 7, 08:55 UTC25m
2026-07-07 ASL81K - Jul 7, 06:35 UTCJul 7, 07:00 UTC25m
2026-07-07 ASL84H - Jul 7, 04:55 UTCJul 7, 05:20 UTC25m
2026-07-06 ASL54D - Jul 6, 20:05 UTCJul 6, 21:15 UTC1h 10m
2026-07-06 ASL81E - Jul 6, 17:45 UTCJul 6, 19:00 UTC1h 15m
2026-07-06 ASL96D ATH → BEG Jul 6, 14:25 UTCJul 6, 15:40 UTC1h 15m
2026-07-06 ASL64R BEG → ATH Jul 6, 11:50 UTCJul 6, 13:05 UTC1h 15m
2026-07-06 ASL84D HAM → BEG Jul 6, 08:00 UTCJul 6, 09:40 UTC1h 40m
2026-07-06 ASL44R BEG → HAM Jul 6, 04:50 UTCJul 6, 06:45 UTC1h 55m
2026-07-05 ASL20A BEG → TBS Jul 5, 20:00 UTCJul 5, 21:35 UTC1h 35m
2026-07-05 ASL58F BEG → AGP Jul 5, 17:10 UTCJul 5, 19:00 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 YU-ATD page for operator, model, and routing details .

Mode-S 4C0263 frequently asked

What is Mode-S code 4C0263?
4C0263 is an ICAO 24-bit transponder address. Allocated to Serbia. Assigned to YU-ATD.
Where is Mode-S 4C0263 registered?
Mode-S code 4C0263 is allocated to Serbia (RS). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4C0263 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4C0263, octal 23001143, decimal 4,981,347.
What flights does 4C0263 operate?
Mode-S 4C0263 has broadcast 20 distinct callsigns, including ASL90A, ASL27L, ASL73B, ASL32A, ASL65F.