Apparatus

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sensors Mode-S transponder

040198

ICAO 24-bit transponder address · allocated to Ethiopia

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

Hex
040198
Octal
01000630
Decimal
262,552
Country
ET
Tail
ET-AYA
Type
A359
No current signal · last broadcast 8d ago
Flights observed
59
Distinct callsigns
20
Country
ET
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S 040198.

Country allocation

The ICAO 24-bit address 040198 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
ETH713 Ethiopian Airlines 6 2026-05-18
ETH712 Ethiopian Airlines 6 2026-05-18
ETH506 Ethiopian Airlines 5 2026-04-15
ETH735 Ethiopian Airlines 4 2026-05-20
ETH734 Ethiopian Airlines 4 2026-05-20
ETH727 Ethiopian Airlines 4 2026-04-14
ETH500 Ethiopian Airlines 4 2026-05-07
ETH501 Ethiopian Airlines 3 2026-05-07
ETH845 Ethiopian Airlines 2 2026-04-20
ETH844 Ethiopian Airlines 2 2026-04-20
ETH751 Ethiopian Airlines 2 2026-04-17
ETH750 Ethiopian Airlines 2 2026-04-17
ETH726 Ethiopian Airlines 2 2026-04-14
ETH707 Ethiopian Airlines 2 2026-05-02
ETH706 Ethiopian Airlines 2 2026-05-02
ETH685 Ethiopian Airlines 2 2026-04-21
ETH507 Ethiopian Airlines 2 2026-04-16
ETH934 Ethiopian Airlines 1 2026-05-15
ETH873 Ethiopian Airlines 1 2026-04-29
ETH808 Ethiopian Airlines 1 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-21 ETH808 JNB → ADD May 21, 13:05 UTCMay 21, 13:40 UTC35m
2026-05-20 ETH735 CDG → ADD May 20, 20:10 UTCMay 21, 11:30 UTC15h 20m
2026-05-20 ETH734 ADD → CDG May 20, 00:35 UTCMay 20, 04:35 UTC4h 0m
2026-05-18 ETH713 FCO → ADD May 18, 21:55 UTCMay 18, 23:35 UTC1h 40m
2026-05-18 ETH713 FCO → ADD May 18, 18:45 UTCMay 18, 20:15 UTC1h 30m
2026-05-18 ETH712 ADD → FCO May 18, 05:10 UTCMay 18, 06:55 UTC1h 45m
2026-05-18 ETH712 ADD → FCO May 18, 01:30 UTCMay 18, 03:35 UTC2h 5m
2026-05-15 ETH934 ABJ → ADD May 15, 14:20 UTCMay 15, 14:55 UTC34m
2026-05-13 ETH735 CDG → ADD May 13, 20:15 UTCMay 13, 23:05 UTC2h 50m
2026-05-13 ETH734 ADD → CDG May 13, 01:10 UTCMay 13, 05:10 UTC4h 0m
2026-05-11 ETH735 CDG → ADD May 11, 20:00 UTCMay 11, 22:35 UTC2h 34m
2026-05-11 ETH734 ADD → CDG May 11, 01:05 UTCMay 11, 05:15 UTC4h 10m
2026-05-09 ETH735 CDG → ADD May 9, 20:44 UTCMay 10, 00:05 UTC3h 20m
2026-05-09 ETH734 ADD → CDG May 9, 01:25 UTCMay 9, 04:50 UTC3h 25m
2026-05-07 ETH501 IAD → ADD May 7, 15:40 UTCMay 8, 00:44 UTC9h 5m
2026-05-07 ETH500 DUB → IAD May 7, 04:20 UTCMay 7, 13:25 UTC9h 5m
2026-05-06 ETH500 DUB → IAD May 6, 13:45 UTCMay 7, 02:50 UTC13h 4m
2026-05-05 ETH501 IAD → ADD May 5, 16:06 UTCMay 6, 11:35 UTC19h 30m
2026-05-05 ETH501 IAD → ADD May 5, 15:15 UTCMay 6, 11:35 UTC20h 20m
2026-05-05 ETH500 DUB → IAD May 5, 03:40 UTCMay 5, 12:20 UTC8h 40m
2026-05-05 ETH500 DUB → IAD May 5, 00:05 UTCMay 5, 02:10 UTC2h 5m
2026-05-02 ETH707 FRA → ADD May 2, 20:45 UTCMay 3, 08:20 UTC11h 34m
2026-05-02 ETH706 ADD → FRA May 2, 01:25 UTCMay 2, 04:25 UTC3h 0m
2026-04-30 ETH604 ADD → PEK Apr 30, 07:45 UTCApr 30, 08:05 UTC20m
2026-04-29 ETH873 ADD → HRE Apr 29, 09:05 UTCApr 30, 01:40 UTC16h 34m
2026-04-28 ETH713 FCO → ADD Apr 28, 22:10 UTCApr 29, 09:05 UTC10h 56m
2026-04-28 ETH713 FCO → ADD Apr 28, 19:05 UTCApr 28, 20:10 UTC1h 5m
2026-04-28 ETH712 ADD → FCO Apr 28, 05:25 UTCApr 28, 06:35 UTC1h 10m
2026-04-28 ETH712 ADD → FCO Apr 28, 02:30 UTCApr 28, 03:45 UTC1h 15m
2026-04-26 ETH713 FCO → ADD Apr 26, 21:20 UTCApr 26, 23:00 UTC1h 40m
2026-04-26 ETH712 ADD → FCO Apr 26, 01:05 UTCApr 26, 03:25 UTC2h 20m
2026-04-24 ETH713 FCO → ADD Apr 24, 21:30 UTCApr 24, 23:45 UTC2h 15m
2026-04-24 ETH712 ADD → FCO Apr 24, 01:30 UTCApr 24, 03:25 UTC1h 55m
2026-04-21 ETH685 PVG → ADD Apr 21, 20:25 UTCApr 22, 15:45 UTC19h 20m
2026-04-21 ETH685 PVG → ADD Apr 21, 02:45 UTCApr 22, 00:05 UTC21h 20m
2026-04-20 ETH684 ADD → PVG Apr 20, 13:25 UTCApr 21, 03:55 UTC14h 30m
2026-04-20 ETH844 CPT → ADD Apr 20, 12:15 UTCApr 20, 12:25 UTC10m
2026-04-20 ETH845 ADD → CPT Apr 20, 10:35 UTCApr 20, 11:00 UTC25m
2026-04-19 ETH707 FRA → ADD Apr 19, 20:40 UTCApr 20, 06:05 UTC9h 25m
2026-04-18 ETH706 ADD → FRA Apr 18, 13:45 UTCApr 19, 04:15 UTC14h 30m
2026-04-18 ETH844 CPT → ADD Apr 18, 12:30 UTCApr 18, 12:45 UTC15m
2026-04-18 ETH845 ADD → CPT Apr 18, 10:45 UTCApr 18, 11:05 UTC20m
2026-04-17 ETH751 BRU → ADD Apr 17, 21:25 UTCApr 17, 22:35 UTC1h 10m
2026-04-17 ETH751 BRU → ADD Apr 17, 19:45 UTCApr 17, 21:20 UTC1h 35m
2026-04-17 ETH750 ADD → BRU Apr 17, 03:20 UTCApr 17, 05:10 UTC1h 51m
2026-04-17 ETH750 ADD → BRU Apr 17, 01:50 UTCApr 17, 03:15 UTC1h 25m
2026-04-16 ETH507 GRU → ADD Apr 16, 07:09 UTCApr 16, 07:54 UTC45m
2026-04-16 ETH507 GRU → ADD Apr 16, 03:09 UTCApr 16, 05:05 UTC1h 55m
2026-04-15 ETH506 ADD → GRU Apr 15, 23:10 UTCApr 16, 01:05 UTC1h 55m
2026-04-15 ETH506 ADD → GRU Apr 15, 22:50 UTCApr 15, 23:00 UTC10m

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-AYA page for operator, model, and routing details .

Mode-S 040198 frequently asked

What is Mode-S code 040198?
040198 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AYA.
Where is Mode-S 040198 registered?
Mode-S code 040198 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040198 broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040198, octal 01000630, decimal 262,552.
What flights does 040198 operate?
Mode-S 040198 has broadcast 20 distinct callsigns, including ETH713, ETH712, ETH506, ETH735, ETH734.