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sensors Mode-S transponder

04012A

ICAO 24-bit transponder address · allocated to Ethiopia

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

Hex
04012A
Octal
01000452
Decimal
262,442
Country
ET
Tail
ET-ATQ
Type
A359
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
179
Distinct callsigns
20
Country
ET
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 04012A.

Country allocation

The ICAO 24-bit address 04012A 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
ETH639 - 12 2026-07-18
ETH638 Ethiopian Airlines 12 2026-07-18
ETH645 Ethiopian Airlines 11 2026-07-23
ETH644 Ethiopian Airlines 10 2026-07-23
ETH672 Ethiopian Airlines 9 2026-06-11
ETH673 Ethiopian Airlines 8 2026-06-11
ETH713 - 7 2026-07-15
ETH707 Ethiopian Airlines 7 2026-07-26
ETH706 Ethiopian Airlines 7 2026-07-26
ETH925 Ethiopian Airlines 6 2026-06-05
ETH738 Ethiopian Airlines 6 2026-05-28
ETH729 - 6 2026-06-28
ETH728 - 6 2026-06-28
ETH712 - 6 2026-07-14
ETH685 Ethiopian Airlines 6 2026-06-23
ETH739 Ethiopian Airlines 5 2026-05-28
ETH735 Ethiopian Airlines 5 2026-07-07
ETH751 - 4 2026-07-11
ETH736 Ethiopian Airlines 4 2026-05-04
ETH734 - 4 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ETH707 FRA → ADD Jul 26, 20:30 UTCJul 26, 22:30 UTC2h 0m
2026-07-26 ETH706 ADD → FRA Jul 26, 01:35 UTCJul 26, 04:35 UTC3h 0m
2026-07-23 ETH645 HKG → ADD Jul 23, 18:35 UTCJul 23, 21:45 UTC3h 10m
2026-07-23 ETH645 HKG → ADD Jul 23, 16:50 UTCJul 23, 17:10 UTC20m
2026-07-23 ETH645 HKG → ADD Jul 23, 13:40 UTCJul 23, 15:15 UTC1h 35m
2026-07-23 ETH644 HKG → MNL Jul 23, 09:25 UTCJul 23, 11:15 UTC1h 50m
2026-07-23 ETH644 HKG → MNL Jul 23, 07:00 UTCJul 23, 07:35 UTC35m
2026-07-23 ETH644 HKG → MNL Jul 23, 04:45 UTCJul 23, 05:20 UTC35m
2026-07-23 ETH644 HKG → MNL Jul 23, 01:35 UTCJul 23, 04:40 UTC3h 5m
2026-07-22 ETH433 DOH → ADD Jul 22, 01:10 UTCJul 22, 01:50 UTC40m
2026-07-21 ETH432 ADD → DOH Jul 21, 22:10 UTCJul 21, 23:20 UTC1h 10m
2026-07-20 ETH433 DOH → ADD Jul 20, 01:40 UTCJul 20, 02:25 UTC45m
2026-07-19 ETH432 ADD → DOH Jul 19, 22:50 UTCJul 19, 23:35 UTC45m
2026-07-18 ETH639 - Jul 18, 18:35 UTCJul 18, 22:15 UTC3h 40m
2026-07-18 ETH639 - Jul 18, 15:35 UTCJul 18, 16:10 UTC35m
2026-07-18 ETH638 ADD → SIN Jul 18, 09:00 UTCJul 18, 09:35 UTC35m
2026-07-18 ETH638 ADD → SIN Jul 18, 02:55 UTCJul 18, 07:15 UTC4h 20m
2026-07-16 ETH611 - Jul 16, 22:59 UTCJul 16, 23:29 UTC30m
2026-07-16 ETH640 - Jul 16, 19:25 UTCJul 16, 20:15 UTC50m
2026-07-15 ETH713 - Jul 15, 22:35 UTCJul 16, 20:15 UTC21h 40m
2026-07-15 ETH713 FCO → BOM Jul 15, 21:30 UTCJul 16, 20:15 UTC22h 45m
2026-07-15 ETH716 - Jul 15, 05:35 UTCJul 15, 19:20 UTC13h 45m
2026-07-14 ETH712 - Jul 14, 09:25 UTCJul 15, 03:25 UTC17h 59m
2026-07-14 ETH712 - Jul 14, 07:05 UTCJul 15, 03:25 UTC20h 19m
2026-07-13 ETH866 - Jul 13, 22:35 UTCJul 14, 17:00 UTC18h 25m
2026-07-13 ETH645 - Jul 13, 20:35 UTCJul 14, 17:00 UTC20h 25m
2026-07-13 ETH645 - Jul 13, 18:55 UTCJul 14, 17:00 UTC22h 5m
2026-07-13 ETH645 - Jul 13, 17:10 UTCJul 13, 17:25 UTC15m
2026-07-13 ETH645 - Jul 13, 13:40 UTCJul 13, 15:20 UTC1h 40m
2026-07-13 ETH644 HKG → MNL Jul 13, 09:20 UTCJul 13, 11:10 UTC1h 50m
2026-07-13 ETH644 - Jul 13, 06:55 UTCJul 13, 07:55 UTC1h 0m
2026-07-13 ETH644 - Jul 13, 01:15 UTCJul 13, 05:05 UTC3h 50m
2026-07-11 ETH751 - Jul 11, 22:35 UTCJul 11, 22:55 UTC20m
2026-07-11 ETH751 - Jul 11, 19:40 UTCJul 11, 22:30 UTC2h 50m
2026-07-10 ETH750 - Jul 10, 14:45 UTCJul 11, 05:25 UTC14h 40m
2026-07-09 ETH645 - Jul 9, 21:20 UTCJul 10, 15:05 UTC17h 45m
2026-07-09 ETH645 - Jul 9, 18:40 UTCJul 10, 15:05 UTC20h 25m
2026-07-09 ETH645 - Jul 9, 16:55 UTCJul 9, 17:05 UTC10m
2026-07-09 ETH645 MNL → HKG Jul 9, 13:10 UTCJul 9, 14:50 UTC1h 40m
2026-07-09 ETH644 - Jul 9, 08:50 UTCJul 9, 10:25 UTC1h 35m
2026-07-09 ETH644 - Jul 9, 06:55 UTCJul 9, 07:40 UTC45m
2026-07-09 ETH644 - Jul 9, 01:10 UTCJul 9, 05:10 UTC4h 0m
2026-07-07 ETH735 CDG → ADD Jul 7, 19:50 UTCJul 7, 22:40 UTC2h 50m
2026-07-07 ETH734 - Jul 7, 01:05 UTCJul 7, 04:25 UTC3h 20m
2026-07-04 ETH735 CDG → ADD Jul 4, 20:00 UTCJul 4, 23:45 UTC3h 45m
2026-07-04 ETH734 - Jul 4, 00:45 UTCJul 4, 04:15 UTC3h 30m
2026-07-02 ETH751 BRU → ADD Jul 2, 19:45 UTCJul 2, 23:25 UTC3h 40m
2026-07-02 ETH750 - Jul 2, 01:10 UTCJul 2, 04:40 UTC3h 30m
2026-06-30 ETH727 FCO → ADD Jun 30, 21:20 UTCJul 1, 00:30 UTC3h 10m
2026-06-30 ETH727 FCO → ADD Jun 30, 18:00 UTCJun 30, 19:35 UTC1h 35m

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

Mode-S 04012A frequently asked

What is Mode-S code 04012A?
04012A is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-ATQ.
Where is Mode-S 04012A registered?
Mode-S code 04012A is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 04012A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 04012A, octal 01000452, decimal 262,442.
What flights does 04012A operate?
Mode-S 04012A has broadcast 20 distinct callsigns, including ETH639, ETH638, ETH645, ETH644, ETH672.