Apparatus

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sensors Mode-S transponder

040197

ICAO 24-bit transponder address · allocated to Ethiopia

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

Hex
040197
Octal
01000627
Decimal
262,551
Country
ET
Tail
ET-AYB
Type
A359
No current signal · last broadcast 15h ago
Flights observed
79
Distinct callsigns
20
Country
ET
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 040197.

Country allocation

The ICAO 24-bit address 040197 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.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ETH685 Ethiopian Airlines 10 2026-05-23
ETH552 Ethiopian Airlines 9 2026-05-06
ETH684 Ethiopian Airlines 6 2026-06-02
ETH500 Ethiopian Airlines 6 2026-04-16
ETH604 Ethiopian Airlines 5 2026-05-27
ETH553 Ethiopian Airlines 5 2026-05-06
ETH501 Ethiopian Airlines 4 2026-04-16
ETH750 Ethiopian Airlines 3 2026-05-16
ETH735 Ethiopian Airlines 3 2026-05-15
ETH734 Ethiopian Airlines 3 2026-05-15
ETH638 Ethiopian Airlines 3 2026-05-21
ETH847 - 2 2026-04-13
ETH751 Ethiopian Airlines 2 2026-05-17
ETH639 Ethiopian Airlines 2 2026-05-21
ETH600 Ethiopian Airlines 2 2026-05-31
ETH507 Ethiopian Airlines 2 2026-04-27
ETH506 Ethiopian Airlines 2 2026-04-26
ETH909 Ethiopian Airlines 1 2026-05-12
ETH846 - 1 2026-04-13
ETH808 Ethiopian Airlines 1 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 ETH684 ADD → PVG Jun 2, 00:50 UTCJun 2, 04:05 UTC3h 15m
2026-06-01 ETH601 DXB → ADD Jun 1, 00:55 UTCJun 1, 01:15 UTC20m
2026-05-31 ETH600 ADD → DXB May 31, 09:45 UTCMay 31, 22:50 UTC13h 5m
2026-05-30 ETH600 ADD → DXB May 30, 23:50 UTCMay 31, 22:50 UTC23h 0m
2026-05-30 ETH707 FRA → ADD May 30, 20:30 UTCMay 31, 09:45 UTC13h 15m
2026-05-29 ETH706 ADD → FRA May 29, 14:10 UTCMay 30, 04:15 UTC14h 5m
2026-05-27 ETH604 ADD → PEK May 27, 07:40 UTCMay 27, 08:05 UTC25m
2026-05-23 ETH685 PVG → ADD May 23, 03:50 UTCMay 23, 23:25 UTC19h 35m
2026-05-23 ETH685 PVG → ADD May 23, 03:15 UTCMay 23, 23:25 UTC20h 10m
2026-05-23 ETH685 PVG → ADD May 23, 01:00 UTCMay 23, 23:25 UTC22h 25m
2026-05-22 ETH684 ADD → PVG May 22, 12:55 UTCMay 23, 03:55 UTC14h 59m
2026-05-21 ETH639 KUL → SIN May 21, 18:35 UTCMay 22, 11:25 UTC16h 50m
2026-05-21 ETH639 KUL → SIN May 21, 15:30 UTCMay 21, 16:10 UTC40m
2026-05-21 ETH638 ADD → SIN May 21, 07:55 UTCMay 21, 08:50 UTC55m
2026-05-20 ETH638 ADD → SIN May 20, 15:30 UTCMay 21, 06:05 UTC14h 35m
2026-05-20 ETH638 ADD → SIN May 20, 09:25 UTCMay 21, 06:05 UTC20h 40m
2026-05-19 ETH604 ADD → PEK May 19, 07:25 UTCMay 19, 07:50 UTC25m
2026-05-17 ETH751 BRU → ADD May 17, 19:45 UTCMay 17, 22:45 UTC3h 0m
2026-05-16 ETH750 ADD → BRU May 16, 13:41 UTCMay 17, 05:20 UTC15h 40m
2026-05-15 ETH735 CDG → ADD May 15, 20:00 UTCMay 16, 12:16 UTC16h 16m
2026-05-15 ETH734 ADD → CDG May 15, 01:25 UTCMay 15, 05:00 UTC3h 35m
2026-05-14 ETH734 ADD → CDG May 14, 08:45 UTCMay 15, 05:00 UTC20h 15m
2026-05-12 ETH909 ADD → BKO May 12, 21:50 UTCMay 13, 17:05 UTC19h 15m
2026-05-12 ETH685 PVG → ADD May 12, 20:15 UTCMay 13, 17:05 UTC20h 50m
2026-05-12 ETH685 PVG → ADD May 12, 03:50 UTCMay 12, 21:55 UTC18h 5m
2026-05-12 ETH685 PVG → ADD May 12, 03:00 UTCMay 12, 21:55 UTC18h 55m
2026-05-11 ETH684 ADD → PVG May 11, 08:55 UTCMay 12, 04:15 UTC19h 20m
2026-05-10 ETH685 PVG → ADD May 10, 20:45 UTCMay 11, 08:55 UTC12h 10m
2026-05-10 ETH685 PVG → ADD May 10, 03:50 UTCMay 10, 21:59 UTC18h 10m
2026-05-10 ETH684 ADD → PVG May 10, 02:34 UTCMay 10, 21:59 UTC19h 25m
2026-05-09 ETH684 ADD → PVG May 9, 09:05 UTCMay 10, 03:55 UTC18h 50m
2026-05-08 ETH685 PVG → ADD May 8, 21:00 UTCMay 9, 09:05 UTC12h 5m
2026-05-08 ETH685 PVG → ADD May 8, 03:49 UTCMay 8, 21:55 UTC18h 5m
2026-05-08 ETH684 ADD → PVG May 8, 02:39 UTCMay 8, 21:55 UTC19h 15m
2026-05-06 ETH553 YYZ → ADD May 6, 15:05 UTCMay 7, 00:00 UTC8h 55m
2026-05-06 ETH552 ADD → DUB May 6, 04:00 UTCMay 6, 12:40 UTC8h 40m
2026-05-06 ETH552 ADD → DUB May 6, 00:40 UTCMay 6, 02:40 UTC2h 0m
2026-05-04 ETH751 BRU → ADD May 4, 19:50 UTCMay 4, 22:35 UTC2h 45m
2026-05-04 ETH750 ADD → BRU May 4, 02:50 UTCMay 4, 06:20 UTC3h 30m
2026-05-03 ETH750 ADD → BRU May 3, 05:50 UTCMay 4, 05:45 UTC23h 55m
2026-05-03 ETH717 FCO → ADD May 3, 05:30 UTCMay 4, 03:45 UTC22h 15m
2026-05-03 ETH712 ADD → FCO May 3, 00:40 UTCMay 3, 03:30 UTC2h 49m
2026-05-01 ETH553 YYZ → ADD May 1, 20:45 UTCMay 2, 00:40 UTC3h 55m
2026-05-01 ETH553 YYZ → ADD May 1, 15:20 UTCMay 1, 16:55 UTC1h 35m
2026-05-01 ETH552 ADD → DUB May 1, 04:40 UTCMay 1, 12:50 UTC8h 10m
2026-05-01 ETH552 ADD → DUB May 1, 00:45 UTCMay 1, 02:50 UTC2h 5m
2026-04-28 ETH604 ADD → PEK Apr 28, 08:00 UTCApr 28, 08:25 UTC25m
2026-04-27 ETH507 GRU → ADD Apr 27, 05:55 UTCApr 28, 03:25 UTC21h 30m
2026-04-27 ETH507 GRU → ADD Apr 27, 02:10 UTCApr 27, 04:15 UTC2h 5m
2026-04-26 ETH506 ADD → GRU Apr 26, 21:55 UTCApr 27, 00:25 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 ET-AYB page for operator, model, and routing details .

Mode-S 040197 frequently asked

What is Mode-S code 040197?
040197 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AYB.
Where is Mode-S 040197 registered?
Mode-S code 040197 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040197 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040197, octal 01000627, decimal 262,551.
What flights does 040197 operate?
Mode-S 040197 has broadcast 20 distinct callsigns, including ETH685, ETH552, ETH684, ETH500, ETH604.