Apparatus

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sensors Mode-S transponder

04012B

ICAO 24-bit transponder address · allocated to Ethiopia

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

Hex
04012B
Octal
01000453
Decimal
262,443
Country
ET
Tail
ET-ATR
Type
A359
No current signal · last broadcast 6h ago
Flights observed
72
Distinct callsigns
20
Country
ET
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 04012B.

Country allocation

The ICAO 24-bit address 04012B 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
ETH727 Ethiopian Airlines 12 2026-05-25
ETH726 Ethiopian Airlines 12 2026-05-25
ETH737 Ethiopian Airlines 6 2026-04-26
ETH736 Ethiopian Airlines 5 2026-04-26
ETH729 Ethiopian Airlines 4 2026-04-24
ETH728 Ethiopian Airlines 4 2026-04-24
ETH713 Ethiopian Airlines 4 2026-05-29
ETH639 Ethiopian Airlines 4 2026-05-23
ETH638 Ethiopian Airlines 4 2026-05-23
ETH712 Ethiopian Airlines 3 2026-05-28
ETH846 Ethiopian Airlines 2 2026-05-01
ETH739 Ethiopian Airlines 2 2026-05-14
ETH738 Ethiopian Airlines 2 2026-05-14
ETH900 Ethiopian Airlines 1 2026-04-17
ETH735 Ethiopian Airlines 1 2026-05-12
ETH734 Ethiopian Airlines 1 2026-05-11
ETH707 Ethiopian Airlines 1 2026-05-06
ETH706 Ethiopian Airlines 1 2026-05-05
ETH701 Ethiopian Airlines 1 2026-05-27
ETH700 Ethiopian Airlines 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ETH713 FCO → ADD May 29, 21:20 UTCMay 29, 23:00 UTC1h 40m
2026-05-28 ETH712 ADD → FCO May 28, 13:20 UTCMay 29, 03:25 UTC14h 5m
2026-05-27 ETH701 LHR → ADD May 27, 20:25 UTCMay 28, 11:40 UTC15h 15m
2026-05-26 ETH700 ADD → LHR May 26, 13:24 UTCMay 27, 05:29 UTC16h 5m
2026-05-25 ETH727 FCO → ADD May 25, 21:30 UTCMay 26, 12:14 UTC14h 45m
2026-05-25 ETH727 FCO → ADD May 25, 17:55 UTCMay 25, 19:40 UTC1h 45m
2026-05-25 ETH726 MRS → MAN May 25, 05:40 UTCMay 25, 07:15 UTC1h 35m
2026-05-25 ETH726 MRS → MAN May 25, 01:55 UTCMay 25, 04:20 UTC2h 25m
2026-05-23 ETH639 KUL → SIN May 23, 18:15 UTCMay 23, 21:55 UTC3h 40m
2026-05-23 ETH639 KUL → SIN May 23, 15:35 UTCMay 23, 16:10 UTC35m
2026-05-23 ETH638 ADD → SIN May 23, 08:40 UTCMay 23, 09:20 UTC40m
2026-05-23 ETH638 ADD → SIN May 23, 02:10 UTCMay 23, 06:40 UTC4h 29m
2026-05-21 ETH713 FCO → ADD May 21, 21:15 UTCMay 21, 22:50 UTC1h 35m
2026-05-20 ETH712 ADD → FCO May 20, 14:20 UTCMay 21, 03:25 UTC13h 5m
2026-05-16 ETH639 KUL → SIN May 16, 18:20 UTCMay 16, 21:55 UTC3h 35m
2026-05-16 ETH639 KUL → SIN May 16, 15:31 UTCMay 16, 16:05 UTC35m
2026-05-16 ETH638 ADD → SIN May 16, 08:11 UTCMay 16, 09:06 UTC55m
2026-05-16 ETH638 ADD → SIN May 16, 02:05 UTCMay 16, 06:31 UTC4h 26m
2026-05-14 ETH739 GVA → ADD May 14, 19:40 UTCMay 14, 21:45 UTC2h 5m
2026-05-14 ETH739 GVA → ADD May 14, 17:20 UTCMay 14, 18:20 UTC1h 0m
2026-05-14 ETH738 ADD → GVA May 14, 05:50 UTCMay 14, 06:50 UTC1h 0m
2026-05-14 ETH738 ADD → GVA May 14, 01:45 UTCMay 14, 04:45 UTC3h 0m
2026-05-12 ETH735 CDG → ADD May 12, 20:01 UTCMay 12, 23:40 UTC3h 40m
2026-05-11 ETH734 ADD → CDG May 11, 14:45 UTCMay 12, 05:00 UTC14h 16m
2026-05-09 ETH727 FCO → ADD May 9, 21:25 UTCMay 9, 23:50 UTC2h 25m
2026-05-09 ETH727 FCO → ADD May 9, 17:49 UTCMay 9, 19:30 UTC1h 40m
2026-05-09 ETH726 MRS → MAN May 9, 05:40 UTCMay 9, 07:15 UTC1h 35m
2026-05-09 ETH726 MRS → MAN May 9, 01:15 UTCMay 9, 04:15 UTC3h 0m
2026-05-06 ETH707 FRA → ADD May 6, 20:50 UTCMay 6, 23:30 UTC2h 40m
2026-05-05 ETH706 ADD → FRA May 5, 13:40 UTCMay 6, 04:15 UTC14h 35m
2026-05-04 ETH727 FCO → ADD May 4, 21:55 UTCMay 5, 11:35 UTC13h 40m
2026-05-04 ETH727 FCO → ADD May 4, 18:20 UTCMay 4, 20:25 UTC2h 6m
2026-05-04 ETH726 MRS → MAN May 4, 06:40 UTCMay 4, 08:20 UTC1h 40m
2026-05-04 ETH726 MRS → MAN May 4, 02:30 UTCMay 4, 05:25 UTC2h 55m
2026-05-02 ETH727 FCO → ADD May 2, 21:05 UTCMay 3, 00:05 UTC3h 0m
2026-05-02 ETH727 FCO → ADD May 2, 17:50 UTCMay 2, 19:35 UTC1h 45m
2026-05-02 ETH726 MRS → MAN May 2, 06:15 UTCMay 2, 08:00 UTC1h 45m
2026-05-02 ETH726 MRS → MAN May 2, 01:55 UTCMay 2, 04:45 UTC2h 50m
2026-05-01 ETH846 CPT → ADD May 1, 13:50 UTCMay 1, 14:10 UTC20m
2026-04-30 ETH727 FCO → ADD Apr 30, 21:15 UTCMay 1, 12:20 UTC15h 5m
2026-04-30 ETH727 FCO → ADD Apr 30, 17:50 UTCApr 30, 19:40 UTC1h 50m
2026-04-30 ETH726 MRS → MAN Apr 30, 05:40 UTCApr 30, 07:25 UTC1h 45m
2026-04-30 ETH726 MRS → MAN Apr 30, 01:00 UTCApr 30, 04:15 UTC3h 15m
2026-04-28 ETH727 FCO → ADD Apr 28, 21:00 UTCApr 28, 23:10 UTC2h 10m
2026-04-28 ETH727 FCO → ADD Apr 28, 17:50 UTCApr 28, 19:30 UTC1h 40m
2026-04-28 ETH726 MRS → MAN Apr 28, 05:30 UTCApr 28, 07:10 UTC1h 40m
2026-04-28 ETH726 MRS → MAN Apr 28, 01:20 UTCApr 28, 04:25 UTC3h 5m
2026-04-26 ETH737 MXP → ADD Apr 26, 22:00 UTCApr 27, 00:10 UTC2h 10m
2026-04-26 ETH737 MXP → ADD Apr 26, 19:10 UTCApr 26, 19:40 UTC30m
2026-04-26 ETH736 MXP → ZRH Apr 26, 05:45 UTCApr 26, 06:20 UTC35m

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

Mode-S 04012B frequently asked

What is Mode-S code 04012B?
04012B is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-ATR.
Where is Mode-S 04012B registered?
Mode-S code 04012B is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 04012B broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 04012B, octal 01000453, decimal 262,443.
What flights does 04012B operate?
Mode-S 04012B has broadcast 20 distinct callsigns, including ETH727, ETH726, ETH737, ETH736, ETH729.