Apparatus

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sensors Mode-S transponder

4401E2

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-LEX · AIRBUS A-320

Hex
4401E2
Octal
21000742
Decimal
4,456,930
Country
AT
Tail
OE-LEX
Type
A320
No current signal · last broadcast 1h ago
Flights observed
87
Distinct callsigns
20
Country
AT
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4401E2.

Country allocation

The ICAO 24-bit address 4401E2 falls within the block assigned to Austria (AT) by ICAO Annex 10, Volume III. Every aircraft registered in Austria 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
FDX4648 FedEx Express 16 2026-06-02
FDX4797 FedEx Express 14 2026-06-02
FDX4774 - 5 2026-05-08
FDX4725 FedEx Express 5 2026-05-21
FDX4610 - 5 2026-05-17
TAY8LL - 4 2026-05-13
TAY7LL - 4 2026-05-13
TAY6SL ASL Airlines Belgium 4 2026-04-24
FDX4624 - 4 2026-04-25
TAY6IX - 2 2026-05-14
TAY6DN ASL Airlines Belgium 2 2026-05-11
TAY5SL - 2 2026-04-24
TAY5AD ASL Airlines Belgium 2 2026-05-22
TAY3WZ - 2 2026-05-10
TAY2MN ASL Airlines Belgium 2 2026-04-23
TAY1VQ - 2 2026-05-22
TAY1MN ASL Airlines Belgium 2 2026-04-23
TAY7SR ASL Airlines Belgium 1 2026-06-03
TAY7BS ASL Airlines Belgium 1 2026-05-29
TAY6BS - 1 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 TAY7SR TSR → LGG Jun 3, 02:05 UTCJun 3, 02:30 UTC25m
2026-06-02 FDX4797 SAW → LGG Jun 2, 19:50 UTCJun 2, 23:10 UTC3h 20m
2026-06-02 FDX4648 LGG → SAW Jun 2, 15:40 UTCJun 2, 18:40 UTC3h 0m
2026-06-01 TAY1BS - Jun 1, 21:05 UTCJun 1, 21:50 UTC45m
2026-06-01 TAY3BS - Jun 1, 19:05 UTCJun 1, 19:45 UTC40m
2026-06-01 TAY6BS BSL → CDG Jun 1, 15:30 UTCJun 1, 16:20 UTC50m
2026-05-29 TAY7BS CDG → BSL May 29, 02:45 UTCMay 29, 03:30 UTC45m
2026-05-28 FDX4678 MUC → TLV May 28, 20:50 UTCMay 28, 22:35 UTC1h 45m
2026-05-28 FDX4463 - May 28, 02:35 UTCMay 28, 04:10 UTC1h 35m
2026-05-27 TAY4BC BCN → CDG May 27, 21:10 UTCMay 27, 22:35 UTC1h 25m
2026-05-27 TAY3BC CDG → BCN May 27, 02:59 UTCMay 27, 04:24 UTC1h 25m
2026-05-22 TAY5AD MAD → CDG May 22, 21:00 UTCMay 22, 22:35 UTC1h 35m
2026-05-22 TAY5AD MAD → CDG May 22, 18:15 UTCMay 22, 19:05 UTC50m
2026-05-22 TAY1VQ - May 22, 05:55 UTCMay 22, 06:40 UTC45m
2026-05-22 TAY1VQ - May 22, 02:10 UTCMay 22, 04:10 UTC2h 0m
2026-05-21 FDX4725 SAW → LGG May 21, 19:45 UTCMay 21, 22:40 UTC2h 55m
2026-05-21 FDX4648 LGG → SAW May 21, 02:15 UTCMay 21, 04:55 UTC2h 40m
2026-05-20 FDX4797 SAW → LGG May 20, 20:00 UTCMay 20, 23:00 UTC3h 0m
2026-05-20 FDX4648 LGG → SAW May 20, 02:10 UTCMay 20, 04:55 UTC2h 46m
2026-05-18 FDX4797 SAW → LGG May 18, 19:50 UTCMay 18, 22:45 UTC2h 55m
2026-05-17 FDX4610 - May 17, 23:15 UTCMay 18, 02:05 UTC2h 50m
2026-05-14 TAY6IX WAW → CDG May 14, 19:45 UTCMay 14, 21:35 UTC1h 50m
2026-05-14 TAY6IX - May 14, 17:35 UTCMay 14, 18:35 UTC1h 0m
2026-05-14 TAY5IX - May 14, 03:20 UTCMay 14, 05:30 UTC2h 10m
2026-05-13 TAY8LL ARN → CDG May 13, 19:25 UTCMay 13, 21:35 UTC2h 10m
2026-05-13 TAY8LL TLL → ARN May 13, 17:25 UTCMay 13, 18:05 UTC40m
2026-05-13 TAY7LL HEL → TLL May 13, 05:30 UTCMay 13, 05:50 UTC20m
2026-05-13 TAY7LL CDG → HEL May 13, 01:50 UTCMay 13, 04:15 UTC2h 25m
2026-05-12 TAY8LL ARN → CDG May 12, 19:20 UTCMay 12, 21:30 UTC2h 10m
2026-05-12 TAY8LL TLL → ARN May 12, 17:25 UTCMay 12, 18:10 UTC45m
2026-05-12 TAY7LL - May 12, 05:35 UTCMay 12, 05:55 UTC20m
2026-05-12 TAY7LL - May 12, 02:45 UTCMay 12, 04:30 UTC1h 45m
2026-05-11 TAY6DN BLL → GDN May 11, 21:20 UTCMay 11, 22:35 UTC1h 14m
2026-05-11 TAY6DN BLL → GDN May 11, 18:40 UTCMay 11, 20:05 UTC1h 25m
2026-05-10 TAY3WZ - May 10, 20:35 UTCMay 10, 21:10 UTC35m
2026-05-10 TAY3WZ - May 10, 17:59 UTCMay 10, 19:35 UTC1h 35m
2026-05-08 FDX4774 - May 8, 20:00 UTCMay 8, 23:10 UTC3h 10m
2026-05-08 FDX4648 LGG → SAW May 8, 02:14 UTCMay 8, 04:49 UTC2h 35m
2026-05-07 FDX4725 SAW → LGG May 7, 20:10 UTCMay 7, 23:09 UTC3h 0m
2026-05-07 FDX4648 LGG → SAW May 7, 02:30 UTCMay 7, 05:05 UTC2h 35m
2026-05-06 FDX4797 SAW → LGG May 6, 20:15 UTCMay 6, 23:00 UTC2h 45m
2026-05-06 FDX4648 LGG → SAW May 6, 02:30 UTCMay 6, 05:00 UTC2h 30m
2026-05-05 FDX4797 SAW → LGG May 5, 19:55 UTCMay 5, 22:40 UTC2h 45m
2026-05-05 FDX4648 LGG → SAW May 5, 02:01 UTCMay 5, 04:35 UTC2h 35m
2026-05-04 FDX4797 SAW → LGG May 4, 20:20 UTCMay 4, 23:10 UTC2h 50m
2026-05-03 FDX4610 - May 3, 23:20 UTCMay 4, 02:10 UTC2h 50m
2026-04-30 FDX4725 SAW → LGG Apr 30, 19:50 UTCApr 30, 23:00 UTC3h 10m
2026-04-30 FDX4648 LGG → SAW Apr 30, 02:10 UTCApr 30, 04:40 UTC2h 30m
2026-04-29 FDX4797 SAW → LGG Apr 29, 19:55 UTCApr 29, 22:50 UTC2h 55m
2026-04-29 FDX4648 LGG → SAW Apr 29, 02:05 UTCApr 29, 04:34 UTC2h 30m

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 OE-LEX page for operator, model, and routing details .

Mode-S 4401E2 frequently asked

What is Mode-S code 4401E2?
4401E2 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-LEX.
Where is Mode-S 4401E2 registered?
Mode-S code 4401E2 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4401E2 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4401E2, octal 21000742, decimal 4,456,930.
What flights does 4401E2 operate?
Mode-S 4401E2 has broadcast 20 distinct callsigns, including FDX4648, FDX4797, FDX4774, FDX4725, FDX4610.