Apparatus

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sensors Mode-S transponder

040204

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-AYN · AIRBUS A-350-900

Hex
040204
Octal
01001004
Decimal
262,660
Country
ET
Tail
ET-AYN
Type
A359
No current signal · last broadcast 4h ago
Flights observed
0
Distinct callsigns
0
Country
ET
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 040204.

Country allocation

The ICAO 24-bit address 040204 falls within the block assigned to Ethiopia (ET) by ICAO Annex 10, Volume III. Every aircraft registered in Ethiopia 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.

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 ETH710 ADD → LHR Jun 1, 22:45 UTCJun 2, 15:40 UTC16h 55m
2026-06-01 ETH673 ICN → ADD Jun 1, 15:50 UTCJun 1, 16:10 UTC20m
2026-06-01 ETH673 ICN → ADD Jun 1, 12:15 UTCJun 1, 14:10 UTC1h 55m
2026-06-01 ETH672 ICN → NRT Jun 1, 09:00 UTCJun 1, 10:45 UTC1h 45m
2026-06-01 ETH672 ICN → NRT Jun 1, 06:55 UTCJun 1, 07:20 UTC25m
2026-05-30 ETH727 FCO → ADD May 30, 21:20 UTCMay 30, 23:50 UTC2h 30m
2026-05-30 ETH727 FCO → ADD May 30, 18:00 UTCMay 30, 19:45 UTC1h 45m
2026-05-30 ETH726 MRS → MAN May 30, 05:45 UTCMay 30, 07:30 UTC1h 45m
2026-05-30 ETH726 MRS → MAN May 30, 01:35 UTCMay 30, 04:15 UTC2h 40m
2026-05-28 ETH501 IAD → ADD May 28, 15:20 UTCMay 29, 00:20 UTC9h 0m
2026-05-28 ETH500 DUB → IAD May 28, 03:30 UTCMay 28, 12:10 UTC8h 40m
2026-05-27 ETH500 DUB → IAD May 27, 23:55 UTCMay 28, 01:55 UTC2h 0m
2026-05-26 ETH501 IAD → ADD May 26, 15:14 UTCMay 26, 22:59 UTC7h 45m
2026-05-26 ETH500 DUB → IAD May 26, 03:25 UTCMay 26, 12:10 UTC8h 45m
2026-05-21 ETH735 CDG → ADD May 21, 19:55 UTCMay 21, 22:40 UTC2h 45m
2026-05-17 ETH687 DEL → ADD May 17, 21:35 UTCMay 17, 23:20 UTC1h 45m
2026-05-17 ETH689 DEL → ADD May 17, 04:35 UTCMay 17, 19:20 UTC14h 45m
2026-05-17 ETH686 ADD → DEL May 17, 01:30 UTCMay 17, 02:15 UTC45m
2026-05-15 ETH751 BRU → ADD May 15, 19:55 UTCMay 15, 23:20 UTC3h 25m
2026-05-14 ETH750 ADD → BRU May 14, 14:20 UTCMay 15, 05:25 UTC15h 5m
2026-05-14 ETH955 ADD → NSI May 14, 11:55 UTCMay 14, 12:20 UTC25m
2026-05-14 ETH955 ADD → NSI May 14, 10:10 UTCMay 14, 10:31 UTC20m
2026-05-13 ETH673 ICN → ADD May 13, 15:35 UTCMay 13, 15:45 UTC10m
2026-05-13 ETH673 ICN → ADD May 13, 12:00 UTCMay 13, 13:50 UTC1h 50m
2026-05-13 ETH672 ICN → NRT May 13, 08:25 UTCMay 13, 10:20 UTC1h 55m
2026-05-11 ETH685 PVG → ADD May 11, 03:05 UTCMay 11, 22:10 UTC19h 5m
2026-05-11 ETH685 PVG → ADD May 11, 02:45 UTCMay 11, 22:10 UTC19h 25m
2026-05-10 ETH684 ADD → PVG May 10, 16:20 UTCMay 11, 03:50 UTC11h 30m
2026-05-09 ETH685 PVG → ADD May 9, 21:05 UTCMay 10, 16:25 UTC19h 20m
2026-05-09 ETH685 PVG → ADD May 9, 20:10 UTCMay 10, 16:25 UTC20h 15m
2026-05-09 ETH685 PVG → ADD May 9, 03:05 UTCMay 9, 21:50 UTC18h 45m
2026-05-09 ETH685 PVG → ADD May 9, 02:50 UTCMay 9, 21:50 UTC19h 0m
2026-05-07 ETH735 CDG → ADD May 7, 20:00 UTCMay 7, 23:29 UTC3h 29m
2026-05-07 ETH734 ADD → CDG May 7, 01:30 UTCMay 7, 04:45 UTC3h 15m
2026-05-05 ETH684 ADD → PVG May 5, 03:05 UTCMay 5, 21:40 UTC18h 35m
2026-05-05 ETH684 ADD → PVG May 5, 01:20 UTCMay 5, 21:40 UTC20h 20m
2026-05-03 ETH737 MXP → ADD May 3, 21:50 UTCMay 3, 23:50 UTC2h 0m
2026-05-03 ETH737 MXP → ADD May 3, 19:15 UTCMay 3, 19:45 UTC30m
2026-05-03 ETH736 MXP → ZRH May 3, 06:05 UTCMay 3, 06:45 UTC40m
2026-05-02 ETH808 JNB → ADD May 2, 13:20 UTCMay 2, 13:50 UTC30m
2026-05-01 ETH685 PVG → ADD May 1, 20:15 UTCMay 2, 11:30 UTC15h 16m
2026-05-01 ETH685 PVG → ADD May 1, 01:15 UTCMay 1, 23:45 UTC22h 30m
2026-04-29 ETH501 IAD → ADD Apr 29, 15:20 UTCApr 30, 01:20 UTC9h 59m
2026-04-29 ETH500 DUB → IAD Apr 29, 03:49 UTCApr 29, 12:40 UTC8h 51m
2026-04-27 ETH685 PVG → ADD Apr 27, 20:15 UTCApr 27, 23:45 UTC3h 30m
2026-04-27 ETH685 PVG → ADD Apr 27, 03:05 UTCApr 27, 23:45 UTC20h 40m
2026-04-27 ETH685 PVG → ADD Apr 27, 02:35 UTCApr 27, 23:45 UTC21h 10m
2026-04-26 ETH684 ADD → PVG Apr 26, 13:05 UTCApr 27, 03:55 UTC14h 50m
2026-04-26 ETH507 GRU → ADD Apr 26, 05:50 UTCApr 27, 03:55 UTC22h 5m
2026-04-26 ETH507 GRU → ADD Apr 26, 02:10 UTCApr 26, 04:10 UTC2h 0m

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 ET-AYN page for operator, model, and routing details .

Mode-S 040204 frequently asked

What is Mode-S code 040204?
040204 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AYN.
Where is Mode-S 040204 registered?
Mode-S code 040204 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040204 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 040204, octal 01001004, decimal 262,660.