Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

440B61

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-IXA · BOEING 737-800

Hex
440B61
Octal
21005541
Decimal
4,459,361
Country
AT
Tail
OE-IXA
Type
B738
No current signal · last broadcast 4h ago
Flights observed
111
Distinct callsigns
20
Country
AT
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 440B61.

Country allocation

The ICAO 24-bit address 440B61 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
TAY7CA ASL Airlines Belgium 23 2026-05-18
TAY6CA ASL Airlines Belgium 17 2026-05-17
TAY6SF ASL Airlines Belgium 10 2026-05-29
TAY4VA - 9 2026-05-22
TAY8AN ASL Airlines Belgium 8 2026-04-23
TAY3SF - 8 2026-05-29
TAY5VA ASL Airlines Belgium 6 2026-05-22
TAY2VQ ASL Airlines Belgium 6 2026-05-11
TAY9AN ASL Airlines Belgium 4 2026-04-23
TAY1VQ - 3 2026-04-15
TAY9VX - 2 2026-05-21
TAY7VC - 2 2026-05-21
TAY6IX - 2 2026-04-30
TAY5IX - 2 2026-04-30
TAY9SL ASL Airlines Belgium 1 2026-04-13
TAY8VC - 1 2026-05-10
TAY8SR - 1 2026-05-14
TAY7SR ASL Airlines Belgium 1 2026-05-14
TAY7LQ - 1 2026-04-16
TAY6LQ ASL Airlines Belgium 1 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 TAY6SF SOF → OTP May 29, 19:20 UTCMay 29, 22:10 UTC2h 50m
2026-05-29 TAY6SF SOF → OTP May 29, 17:35 UTCMay 29, 18:10 UTC35m
2026-05-29 TAY3SF - May 29, 06:15 UTCMay 29, 06:40 UTC25m
2026-05-29 TAY3SF - May 29, 02:55 UTCMay 29, 05:20 UTC2h 25m
2026-05-28 TAY6SF SOF → OTP May 28, 19:15 UTCMay 28, 22:00 UTC2h 45m
2026-05-28 TAY6SF SOF → OTP May 28, 17:40 UTCMay 28, 18:15 UTC35m
2026-05-28 TAY3SF - May 28, 06:20 UTCMay 28, 06:45 UTC25m
2026-05-28 TAY3SF - May 28, 02:55 UTCMay 28, 05:15 UTC2h 20m
2026-05-27 TAY6SF SOF → OTP May 27, 19:15 UTCMay 27, 22:05 UTC2h 50m
2026-05-27 TAY6SF SOF → OTP May 27, 17:30 UTCMay 27, 18:05 UTC35m
2026-05-27 TAY3SF - May 27, 06:15 UTCMay 27, 06:40 UTC25m
2026-05-27 TAY3SF CDG → OTP May 27, 02:49 UTCMay 27, 05:09 UTC2h 20m
2026-05-26 TAY6SF SOF → OTP May 26, 19:15 UTCMay 26, 21:59 UTC2h 45m
2026-05-26 TAY6SF SOF → OTP May 26, 17:30 UTCMay 26, 18:05 UTC35m
2026-05-26 TAY3SF - May 26, 06:25 UTCMay 26, 06:44 UTC20m
2026-05-26 TAY3SF - May 26, 02:44 UTCMay 26, 05:10 UTC2h 25m
2026-05-25 TAY6SF SOF → OTP May 25, 19:20 UTCMay 25, 22:00 UTC2h 40m
2026-05-25 TAY6SF SOF → OTP May 25, 17:30 UTCMay 25, 18:15 UTC45m
2026-05-24 TAY5TR NUE → STR May 24, 18:45 UTCMay 24, 21:25 UTC2h 40m
2026-05-22 TAY5VA LYS → CDG May 22, 19:15 UTCMay 22, 20:10 UTC55m
2026-05-22 TAY4VA LYS → GVA May 22, 04:40 UTCMay 22, 04:55 UTC15m
2026-05-22 TAY4VA - May 22, 02:40 UTCMay 22, 03:25 UTC45m
2026-05-21 TAY7VC - May 21, 20:35 UTCMay 21, 22:00 UTC1h 25m
2026-05-21 TAY9VX - May 21, 02:10 UTCMay 21, 03:20 UTC1h 10m
2026-05-19 TAY7VC VCE → CDG May 19, 20:30 UTCMay 19, 22:00 UTC1h 30m
2026-05-19 TAY9VX CDG → VCE May 19, 02:15 UTCMay 19, 03:25 UTC1h 10m
2026-05-18 TAY7CA FCO → ATH May 18, 21:20 UTCMay 18, 22:20 UTC1h 0m
2026-05-18 TAY7CA FCO → ATH May 18, 18:05 UTCMay 18, 20:25 UTC2h 19m
2026-05-18 TAY7CA FCO → ATH May 18, 15:10 UTCMay 18, 16:55 UTC1h 45m
2026-05-17 TAY6CA CDG → LCA May 17, 20:30 UTCMay 17, 21:40 UTC1h 10m
2026-05-17 TAY6CA CDG → LCA May 17, 16:35 UTCMay 17, 19:15 UTC2h 40m
2026-05-15 TAY5VA LYS → CDG May 15, 19:30 UTCMay 15, 20:15 UTC45m
2026-05-15 TAY4VA LYS → GVA May 15, 04:25 UTCMay 15, 04:45 UTC20m
2026-05-15 TAY4VA - May 15, 02:40 UTCMay 15, 03:20 UTC40m
2026-05-14 TAY8SR - May 14, 18:45 UTCMay 14, 20:50 UTC2h 5m
2026-05-14 TAY7SR TSR → LGG May 14, 03:45 UTCMay 14, 05:35 UTC1h 50m
2026-05-13 TAY5VA LYS → CDG May 13, 20:50 UTCMay 13, 21:40 UTC50m
2026-05-13 TAY5VA LYS → CDG May 13, 19:15 UTCMay 13, 19:35 UTC20m
2026-05-13 TAY4VA LYS → GVA May 13, 04:20 UTCMay 13, 04:40 UTC20m
2026-05-13 TAY4VA CDG → LYS May 13, 02:40 UTCMay 13, 03:25 UTC45m
2026-05-12 TAY4BC BCN → CDG May 12, 21:35 UTCMay 12, 23:01 UTC1h 25m
2026-05-12 TAY3BC - May 12, 02:50 UTCMay 12, 04:10 UTC1h 20m
2026-05-11 TAY2VQ VIT → CDG May 11, 20:40 UTCMay 11, 22:05 UTC1h 25m
2026-05-11 TAY2VQ VIT → CDG May 11, 18:15 UTCMay 11, 19:10 UTC55m
2026-05-10 TAY8VC - May 10, 18:49 UTCMay 10, 21:04 UTC2h 15m
2026-05-08 TAY5VA LYS → CDG May 8, 19:25 UTCMay 8, 20:15 UTC50m
2026-05-08 TAY4VA - May 8, 03:44 UTCMay 8, 04:29 UTC45m
2026-05-07 TAY7CA FCO → ATH May 7, 18:30 UTCMay 7, 21:45 UTC3h 15m
2026-05-07 TAY7CA FCO → ATH May 7, 15:50 UTCMay 7, 17:20 UTC1h 30m
2026-05-07 TAY6CA CDG → LCA May 7, 07:10 UTCMay 7, 08:20 UTC1h 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 OE-IXA page for operator, model, and routing details .

Mode-S 440B61 frequently asked

What is Mode-S code 440B61?
440B61 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-IXA.
Where is Mode-S 440B61 registered?
Mode-S code 440B61 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440B61 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440B61, octal 21005541, decimal 4,459,361.
What flights does 440B61 operate?
Mode-S 440B61 has broadcast 20 distinct callsigns, including TAY7CA, TAY6CA, TAY6SF, TAY4VA, TAY8AN.