Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4C01ED

ICAO 24-bit transponder address · allocated to Serbia

Currently assigned to YU-APN · AIRBUS A-319

Hex
4C01ED
Octal
23000755
Decimal
4,981,229
Country
RS
Tail
YU-APN
Type
A319
No current signal · last broadcast 7h ago
Flights observed
197
Distinct callsigns
20
Country
RS
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 4C01ED.

Country allocation

The ICAO 24-bit address 4C01ED 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
ASL93X Spurling Aviation 6 2026-05-28
ASL84J Spurling Aviation 6 2026-05-26
ASL68F Spurling Aviation 6 2026-05-25
ASL37R Spurling Aviation 6 2026-05-28
ASL136 Spurling Aviation 5 2026-06-02
ASL73B Spurling Aviation 4 2026-05-23
ASL58V Spurling Aviation 4 2026-06-02
ASL49G Spurling Aviation 4 2026-05-16
ASL32A Spurling Aviation 4 2026-05-23
ASL188 Spurling Aviation 4 2026-05-14
ASL16G Spurling Aviation 4 2026-06-02
ASL124 Spurling Aviation 4 2026-05-29
ASL123 Spurling Aviation 4 2026-06-03
ASL122 Spurling Aviation 4 2026-06-03
ASL88G Spurling Aviation 3 2026-05-17
ASL86T Spurling Aviation 3 2026-06-03
ASL82X Spurling Aviation 3 2026-05-17
ASL71G Spurling Aviation 3 2026-06-03
ASL57Z - 3 2026-05-16
ASL57F Spurling Aviation 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 ASL123 LED → BEG Jun 3, 15:55 UTCJun 3, 18:30 UTC2h 35m
2026-06-03 ASL122 BEG → LED Jun 3, 12:10 UTCJun 3, 14:50 UTC2h 40m
2026-06-03 ASL71G CDG → BEG Jun 3, 08:30 UTCJun 3, 10:30 UTC2h 0m
2026-06-03 ASL86T BEG → CDG Jun 3, 04:45 UTCJun 3, 07:00 UTC2h 15m
2026-06-02 ASL136 BEG → SVO Jun 2, 20:00 UTCJun 2, 22:05 UTC2h 5m
2026-06-02 ASL123 LED → BEG Jun 2, 16:00 UTCJun 2, 18:25 UTC2h 25m
2026-06-02 ASL122 BEG → LED Jun 2, 12:15 UTCJun 2, 14:50 UTC2h 35m
2026-06-02 ASL16G OPO → BEG Jun 2, 07:40 UTCJun 2, 09:00 UTC1h 20m
2026-06-02 ASL58V BEG → KRK Jun 2, 04:55 UTCJun 2, 06:25 UTC1h 30m
2026-06-01 ASL136 BEG → SVO Jun 1, 20:15 UTCJun 2, 02:45 UTC6h 30m
2026-06-01 ASL179 AER → BEG Jun 1, 15:45 UTCJun 1, 18:10 UTC2h 25m
2026-06-01 ASL178 BEG → AER Jun 1, 14:15 UTCJun 1, 14:25 UTC10m
2026-06-01 ASL178 BEG → AER Jun 1, 12:25 UTCJun 1, 13:40 UTC1h 15m
2026-06-01 ASL48X LCA → BEG Jun 1, 08:15 UTCJun 1, 10:25 UTC2h 10m
2026-06-01 ASL38M TGD → BEG Jun 1, 04:55 UTCJun 1, 07:05 UTC2h 10m
2026-05-31 ASL17G OPO → BEG May 31, 12:00 UTCMay 31, 20:05 UTC8h 5m
2026-05-31 ASL121 LED → BEG May 31, 09:10 UTCMay 31, 10:00 UTC50m
2026-05-30 ASL47E LCA → BEG May 30, 15:10 UTCMay 30, 17:30 UTC2h 20m
2026-05-30 ASL71H BEG → LCA May 30, 11:55 UTCMay 30, 13:55 UTC2h 0m
2026-05-30 ASL39G TBS → BEG May 30, 06:20 UTCMay 30, 08:15 UTC1h 55m
2026-05-30 ASL47H BEG → AYT May 30, 03:15 UTCMay 30, 04:55 UTC1h 40m
2026-05-29 ASL124 BEG → LED May 29, 17:00 UTCMay 29, 23:00 UTC6h 0m
2026-05-29 ASL10A BEG → ZRH May 29, 12:50 UTCMay 29, 15:05 UTC2h 15m
2026-05-29 ASL12H BEG → LHR May 29, 08:50 UTCMay 29, 11:25 UTC2h 35m
2026-05-29 ASL81K BEG → LHR May 29, 06:25 UTCMay 29, 07:00 UTC35m
2026-05-29 ASL84H BEG → TIV May 29, 04:55 UTCMay 29, 05:15 UTC20m
2026-05-28 ASL65W ARN → BEG May 28, 19:20 UTCMay 28, 21:20 UTC2h 0m
2026-05-28 ASL82Y BEG → ARN May 28, 15:25 UTCMay 28, 18:05 UTC2h 40m
2026-05-28 ASL37R TIV → BEG May 28, 13:40 UTCMay 28, 14:10 UTC30m
2026-05-28 ASL93X BEG → TGD May 28, 12:00 UTCMay 28, 12:20 UTC20m
2026-05-28 ASL16G OPO → BEG May 28, 07:35 UTCMay 28, 08:55 UTC1h 20m
2026-05-28 ASL58V BEG → KRK May 28, 04:50 UTCMay 28, 06:20 UTC1h 30m
2026-05-27 ASL17G OPO → BEG May 27, 18:00 UTCMay 28, 02:40 UTC8h 40m
2026-05-27 ASL131 SVO → BEG May 27, 08:45 UTCMay 27, 10:50 UTC2h 5m
2026-05-27 ASL130 BEG → SVO May 27, 03:50 UTCMay 27, 05:45 UTC1h 55m
2026-05-26 ASL134 BEG → SVO May 26, 16:59 UTCMay 27, 00:04 UTC7h 5m
2026-05-26 ASL84J LCA → BEG May 26, 01:20 UTCMay 26, 03:40 UTC2h 20m
2026-05-25 ASL68F CGN → INI May 25, 21:54 UTCMay 26, 00:00 UTC2h 5m
2026-05-25 ASL22Q TIV → BEG May 25, 17:05 UTCMay 25, 17:35 UTC30m
2026-05-25 ASL30D SKP → BEG May 25, 15:30 UTCMay 25, 15:50 UTC20m
2026-05-25 ASL37R TIV → BEG May 25, 13:40 UTCMay 25, 14:05 UTC25m
2026-05-25 ASL93X BEG → TGD May 25, 12:05 UTCMay 25, 12:25 UTC20m
2026-05-25 ASL71B SZG → BEG May 25, 06:55 UTCMay 25, 08:15 UTC1h 20m
2026-05-25 ASL70J LJU → BEG May 25, 04:30 UTCMay 25, 05:40 UTC1h 10m
2026-05-24 ASL44H FRA → BEG May 24, 18:25 UTCMay 24, 19:45 UTC1h 20m
2026-05-24 ASL86W BEG → BER May 24, 16:00 UTCMay 24, 17:25 UTC1h 25m
2026-05-24 ASL53E PMI → BEG May 24, 13:00 UTCMay 24, 14:30 UTC1h 30m
2026-05-24 ASL27D BEG → ZRH May 24, 10:20 UTCMay 24, 11:45 UTC1h 25m
2026-05-23 ASL73B TGD → BEG May 23, 13:30 UTCMay 23, 14:05 UTC35m
2026-05-23 ASL32A BEG → TIV May 23, 11:50 UTCMay 23, 12:10 UTC20m

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

Mode-S 4C01ED frequently asked

What is Mode-S code 4C01ED?
4C01ED is an ICAO 24-bit transponder address. Allocated to Serbia. Assigned to YU-APN.
Where is Mode-S 4C01ED registered?
Mode-S code 4C01ED is allocated to Serbia (RS). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4C01ED broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4C01ED, octal 23000755, decimal 4,981,229.
What flights does 4C01ED operate?
Mode-S 4C01ED has broadcast 20 distinct callsigns, including ASL93X, ASL84J, ASL68F, ASL37R, ASL136.