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 Jul 25, 01:35 UTC
Flights observed
223
Distinct callsigns
20
Country
AT
Last broadcast
Jul 25, 01:35 UTC

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
TAY5IX - 26 2026-07-17
TAY6IX - 24 2026-07-17
TAY7CA ASL Airlines Belgium 23 2026-05-18
TAY6CA ASL Airlines Belgium 17 2026-05-17
TAY6SF - 14 2026-07-13
TAY6DN - 11 2026-07-10
TAY5DN - 10 2026-07-10
TAY4VA - 9 2026-05-22
TAY8AN ASL Airlines Belgium 8 2026-04-23
TAY3SF - 8 2026-05-29
TAY5TR - 7 2026-07-12
TAY5VA ASL Airlines Belgium 6 2026-05-22
TAY4BC - 6 2026-07-06
TAY3BC - 6 2026-07-03
TAY2VQ ASL Airlines Belgium 6 2026-05-11
TAY9AN ASL Airlines Belgium 4 2026-04-23
TAY6TR ASL Airlines Belgium 3 2026-06-22
TAY2ST - 3 2026-07-23
TAY1VQ - 3 2026-04-15
TAY1ST - 3 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 TAY4999 LGG → CMN Jul 25, 00:50 UTCJul 25, 01:20 UTC30m
2026-07-24 FDX4774 - Jul 24, 19:40 UTCJul 24, 23:00 UTC3h 20m
2026-07-24 FDX4648 LGG → SAW Jul 24, 02:10 UTCJul 24, 04:50 UTC2h 40m
2026-07-23 TAY2ST - Jul 23, 21:50 UTCJul 23, 22:25 UTC35m
2026-07-23 TAY1ST - Jul 23, 02:00 UTCJul 23, 02:45 UTC45m
2026-07-22 TAY2ST - Jul 22, 21:55 UTCJul 22, 22:35 UTC40m
2026-07-22 TAY1ST - Jul 22, 01:55 UTCJul 22, 02:40 UTC45m
2026-07-21 TAY2ST - Jul 21, 21:55 UTCJul 21, 22:35 UTC40m
2026-07-21 TAY1ST - Jul 21, 02:00 UTCJul 21, 02:45 UTC45m
2026-07-18 TAY4999 LGG → CMN Jul 18, 00:29 UTCJul 18, 01:00 UTC30m
2026-07-17 TAY6IX - Jul 17, 20:15 UTCJul 17, 22:15 UTC2h 0m
2026-07-17 TAY6IX - Jul 17, 17:35 UTCJul 17, 18:34 UTC1h 0m
2026-07-17 TAY5IX - Jul 17, 04:25 UTCJul 17, 05:30 UTC1h 5m
2026-07-17 TAY5IX CDG → CPH Jul 17, 01:55 UTCJul 17, 03:20 UTC1h 25m
2026-07-16 TAY6IX - Jul 16, 20:00 UTCJul 16, 22:05 UTC2h 5m
2026-07-16 TAY6IX - Jul 16, 17:45 UTCJul 16, 18:40 UTC55m
2026-07-16 TAY5IX CPH → RIX Jul 16, 04:35 UTCJul 16, 05:40 UTC1h 5m
2026-07-16 TAY5IX CDG → CPH Jul 16, 01:55 UTCJul 16, 03:15 UTC1h 20m
2026-07-15 TAY6IX - Jul 15, 19:55 UTCJul 15, 21:50 UTC1h 55m
2026-07-15 TAY6IX - Jul 15, 17:35 UTCJul 15, 18:30 UTC55m
2026-07-15 TAY5IX - Jul 15, 04:20 UTCJul 15, 05:25 UTC1h 5m
2026-07-15 TAY5IX - Jul 15, 01:40 UTCJul 15, 03:05 UTC1h 25m
2026-07-14 TAY9MS - Jul 14, 21:20 UTCJul 14, 22:15 UTC55m
2026-07-14 TAY1MS - Jul 14, 02:10 UTCJul 14, 03:00 UTC50m
2026-07-13 TAY6SF - Jul 13, 19:30 UTCJul 13, 22:15 UTC2h 45m
2026-07-13 TAY6SF - Jul 13, 17:50 UTCJul 13, 18:25 UTC35m
2026-07-12 TAY5TR - Jul 12, 21:25 UTCJul 12, 21:55 UTC30m
2026-07-12 TAY5TR - Jul 12, 18:01 UTCJul 12, 20:20 UTC2h 20m
2026-07-10 TAY6DN BER → CDG Jul 10, 20:25 UTCJul 10, 21:50 UTC1h 25m
2026-07-10 TAY6DN - Jul 10, 18:20 UTCJul 10, 19:15 UTC55m
2026-07-10 TAY5DN - Jul 10, 04:05 UTCJul 10, 05:05 UTC1h 0m
2026-07-10 TAY5DN - Jul 10, 02:00 UTCJul 10, 03:00 UTC1h 0m
2026-07-09 TAY6DN MUC → CDG Jul 9, 21:15 UTCJul 9, 22:30 UTC1h 15m
2026-07-09 TAY6DN - Jul 9, 18:40 UTCJul 9, 19:45 UTC1h 5m
2026-07-09 TAY5DN - Jul 9, 04:00 UTCJul 9, 05:00 UTC1h 0m
2026-07-09 TAY5DN - Jul 9, 01:40 UTCJul 9, 02:45 UTC1h 5m
2026-07-08 TAY6DN MUC → CDG Jul 8, 21:15 UTCJul 8, 22:30 UTC1h 15m
2026-07-08 TAY6DN - Jul 8, 18:35 UTCJul 8, 19:45 UTC1h 10m
2026-07-08 TAY5DN - Jul 8, 05:30 UTCJul 8, 06:40 UTC1h 10m
2026-07-08 TAY5DN CDG → HAJ Jul 8, 02:35 UTCJul 8, 03:45 UTC1h 10m
2026-07-07 TAY6DN - Jul 7, 21:15 UTCJul 7, 22:25 UTC1h 10m
2026-07-07 TAY6DN - Jul 7, 18:55 UTCJul 7, 20:05 UTC1h 10m
2026-07-07 TAY5DN - Jul 7, 04:00 UTCJul 7, 05:00 UTC1h 0m
2026-07-07 TAY5DN CDG → HAJ Jul 7, 01:50 UTCJul 7, 03:00 UTC1h 10m
2026-07-06 TAY4BC BCN → CDG Jul 6, 21:10 UTCJul 6, 22:45 UTC1h 35m
2026-07-03 TAY3BC - Jul 3, 03:00 UTCJul 3, 04:15 UTC1h 15m
2026-07-02 TAY4BC BCN → CDG Jul 2, 21:25 UTCJul 2, 22:55 UTC1h 30m
2026-07-02 TAY3BC - Jul 2, 03:00 UTCJul 2, 04:10 UTC1h 10m
2026-07-01 TAY4BC BCN → CDG Jul 1, 21:30 UTCJul 1, 23:05 UTC1h 35m
2026-07-01 TAY3BC CDG → BCN Jul 1, 02:55 UTCJul 1, 04:15 UTC1h 20m

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 Jul 25, 01:35 UTC.
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 TAY5IX, TAY6IX, TAY7CA, TAY6CA, TAY6SF.