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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 2d ago
Flights observed
142
Distinct callsigns
20
Country
ET
Last broadcast
2d 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 - 27 2026-07-08
ETH684 - 15 2026-07-08
ETH500 - 11 2026-06-19
ETH552 Ethiopian Airlines 9 2026-05-06
ETH604 Ethiopian Airlines 6 2026-06-07
ETH501 Ethiopian Airlines 6 2026-06-19
ETH751 - 5 2026-07-12
ETH750 - 5 2026-07-12
ETH553 Ethiopian Airlines 5 2026-05-06
ETH735 Ethiopian Airlines 4 2026-06-28
ETH734 - 4 2026-06-27
ETH706 - 4 2026-07-14
ETH645 Ethiopian Airlines 4 2026-06-26
ETH707 - 3 2026-07-15
ETH638 Ethiopian Airlines 3 2026-05-21
ETH847 - 2 2026-04-13
ETH809 - 2 2026-07-13
ETH712 - 2 2026-06-23
ETH701 Ethiopian Airlines 2 2026-06-11
ETH644 - 2 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 ETH707 - Jul 15, 20:45 UTCJul 15, 23:55 UTC3h 10m
2026-07-14 ETH706 - Jul 14, 12:50 UTCJul 15, 04:05 UTC15h 14m
2026-07-13 ETH809 - Jul 13, 17:10 UTCJul 14, 11:10 UTC18h 0m
2026-07-13 ETH809 - Jul 13, 13:55 UTCJul 14, 11:10 UTC21h 15m
2026-07-12 ETH751 - Jul 12, 20:10 UTCJul 13, 11:55 UTC15h 45m
2026-07-12 ETH750 - Jul 12, 01:00 UTCJul 12, 05:05 UTC4h 5m
2026-07-08 ETH685 - Jul 8, 03:50 UTCJul 8, 23:15 UTC19h 25m
2026-07-08 ETH685 - Jul 8, 01:50 UTCJul 8, 23:15 UTC21h 25m
2026-07-08 ETH684 - Jul 8, 01:10 UTCJul 8, 23:15 UTC22h 5m
2026-07-06 ETH685 PVG → ADD Jul 6, 03:50 UTCJul 6, 23:05 UTC19h 15m
2026-07-06 ETH685 PVG → ADD Jul 6, 03:00 UTCJul 6, 23:05 UTC20h 5m
2026-07-06 ETH685 PVG → ADD Jul 6, 01:05 UTCJul 6, 23:05 UTC22h 0m
2026-07-04 ETH685 PVG → ADD Jul 4, 03:50 UTCJul 4, 23:45 UTC19h 55m
2026-07-04 ETH684 - Jul 4, 01:50 UTCJul 4, 23:45 UTC21h 55m
2026-07-04 ETH684 - Jul 4, 01:20 UTCJul 4, 23:45 UTC22h 25m
2026-07-02 ETH685 PVG → ADD Jul 2, 03:50 UTCJul 2, 23:30 UTC19h 40m
2026-07-02 ETH685 PVG → ADD Jul 2, 01:50 UTCJul 2, 23:30 UTC21h 40m
2026-07-02 ETH684 - Jul 2, 01:25 UTCJul 2, 23:30 UTC22h 5m
2026-06-30 ETH685 PVG → ADD Jun 30, 03:50 UTCJun 30, 23:40 UTC19h 50m
2026-06-30 ETH684 - Jun 30, 01:50 UTCJun 30, 23:40 UTC21h 50m
2026-06-30 ETH684 - Jun 30, 01:19 UTCJun 30, 23:40 UTC22h 21m
2026-06-28 ETH735 CDG → ADD Jun 28, 20:45 UTCJun 28, 23:39 UTC2h 55m
2026-06-28 ETH8740 - Jun 28, 16:35 UTCJun 28, 17:25 UTC50m
2026-06-28 ETH8739 - Jun 28, 06:30 UTCJun 28, 14:25 UTC7h 55m
2026-06-27 ETH734 - Jun 27, 13:20 UTCJun 28, 03:59 UTC14h 40m
2026-06-26 ETH645 HKG → ADD Jun 26, 18:34 UTCJun 26, 21:45 UTC3h 10m
2026-06-26 ETH645 HKG → ADD Jun 26, 16:54 UTCJun 26, 17:09 UTC15m
2026-06-26 ETH645 HKG → ADD Jun 26, 15:10 UTCJun 26, 15:20 UTC10m
2026-06-26 ETH645 HKG → ADD Jun 26, 13:34 UTCJun 26, 14:35 UTC1h 0m
2026-06-26 ETH644 - Jun 26, 09:14 UTCJun 26, 10:55 UTC1h 40m
2026-06-26 ETH644 - Jun 26, 01:20 UTCJun 26, 07:30 UTC6h 10m
2026-06-24 ETH713 FCO → ADD Jun 24, 21:24 UTCJun 24, 23:59 UTC2h 35m
2026-06-23 ETH712 - Jun 23, 13:09 UTCJun 24, 03:10 UTC14h 0m
2026-06-22 ETH685 PVG → ADD Jun 22, 20:04 UTCJun 23, 11:29 UTC15h 25m
2026-06-22 ETH685 PVG → ADD Jun 22, 03:50 UTCJun 22, 22:54 UTC19h 5m
2026-06-22 ETH685 PVG → ADD Jun 22, 01:49 UTCJun 22, 22:54 UTC21h 5m
2026-06-22 ETH684 - Jun 22, 01:10 UTCJun 22, 22:54 UTC21h 45m
2026-06-19 ETH501 IAD → ADD Jun 19, 15:19 UTCJun 20, 00:14 UTC8h 55m
2026-06-19 ETH500 FCO → IAD Jun 19, 03:29 UTCJun 19, 12:34 UTC9h 5m
2026-06-19 ETH500 - Jun 19, 01:04 UTCJun 19, 01:45 UTC40m
2026-06-17 ETH501 IAD → ADD Jun 17, 14:55 UTCJun 18, 00:30 UTC9h 35m
2026-06-17 ETH500 - Jun 17, 03:40 UTCJun 17, 12:35 UTC8h 55m
2026-06-16 ETH500 - Jun 16, 16:10 UTCJun 17, 01:45 UTC9h 36m
2026-06-15 ETH500 - Jun 15, 23:50 UTCJun 16, 23:45 UTC23h 56m
2026-06-15 ETH751 BRU → ADD Jun 15, 21:50 UTCJun 16, 16:10 UTC18h 20m
2026-06-15 ETH751 BRU → ADD Jun 15, 20:25 UTCJun 16, 16:10 UTC19h 45m
2026-06-14 ETH750 - Jun 14, 14:20 UTCJun 15, 04:55 UTC14h 35m
2026-06-14 ETH925 - Jun 14, 12:20 UTCJun 14, 12:55 UTC35m
2026-06-13 ETH707 FRA → ADD Jun 13, 20:35 UTCJun 14, 10:15 UTC13h 40m
2026-06-13 ETH706 - Jun 13, 00:35 UTCJun 13, 04:15 UTC3h 39m

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 2d 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, ETH684, ETH500, ETH552, ETH604.