Apparatus

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sensors Mode-S transponder

040140

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-AUO · BOEING 787-9 Dreamliner

Hex
040140
Octal
01000500
Decimal
262,464
Country
ET
Tail
ET-AUO
Type
B789
No current signal · last broadcast 20h ago
Flights observed
91
Distinct callsigns
20
Country
ET
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 040140.

Country allocation

The ICAO 24-bit address 040140 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
ETH628 - 10 2026-06-28
ETH645 Ethiopian Airlines 8 2026-06-11
ETH629 Ethiopian Airlines 8 2026-06-28
ETH741 Ethiopian Airlines 6 2026-06-22
ETH740 - 6 2026-06-22
ETH737 Ethiopian Airlines 6 2026-07-04
ETH736 - 6 2026-07-04
ETH725 - 6 2026-06-20
ETH724 - 6 2026-06-20
ETH644 Ethiopian Airlines 6 2026-06-11
ETH909 Ethiopian Airlines 2 2026-05-24
ETH673 - 2 2026-06-15
ETH672 - 2 2026-06-15
ETH552 - 2 2026-07-09
ETH514 Ethiopian Airlines 2 2026-06-18
ETH913 Ethiopian Airlines 1 2026-06-14
ETH844 Ethiopian Airlines 1 2026-05-31
ETH815 Ethiopian Airlines 1 2026-06-15
ETH716 - 1 2026-06-30
ETH713 Ethiopian Airlines 1 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 ETH553 - Jul 9, 20:15 UTCJul 10, 00:25 UTC4h 10m
2026-07-09 ETH552 - Jul 9, 10:45 UTCJul 9, 12:30 UTC1h 45m
2026-07-09 ETH552 - Jul 9, 10:30 UTCJul 9, 10:40 UTC10m
2026-07-06 ETH519 - Jul 6, 14:55 UTCJul 7, 00:50 UTC9h 55m
2026-07-05 ETH518 - Jul 5, 23:15 UTCJul 6, 01:10 UTC1h 55m
2026-07-04 ETH737 MXP → ADD Jul 4, 21:40 UTCJul 4, 23:45 UTC2h 5m
2026-07-04 ETH737 MXP → ADD Jul 4, 19:15 UTCJul 4, 19:45 UTC30m
2026-07-04 ETH736 MXP → ZRH Jul 4, 05:25 UTCJul 4, 06:05 UTC40m
2026-07-04 ETH736 - Jul 4, 01:25 UTCJul 4, 03:55 UTC2h 30m
2026-07-02 ETH737 MXP → ADD Jul 2, 21:45 UTCJul 2, 23:55 UTC2h 10m
2026-07-02 ETH737 MXP → ADD Jul 2, 19:20 UTCJul 2, 19:55 UTC35m
2026-07-02 ETH736 MXP → ZRH Jul 2, 05:15 UTCJul 2, 05:50 UTC35m
2026-07-02 ETH736 - Jul 2, 00:40 UTCJul 2, 03:30 UTC2h 50m
2026-06-30 ETH713 FCO → ADD Jun 30, 21:30 UTCJun 30, 23:40 UTC2h 10m
2026-06-30 ETH716 - Jun 30, 05:30 UTCJun 30, 19:20 UTC13h 50m
2026-06-29 ETH712 - Jun 29, 12:29 UTCJun 30, 02:55 UTC14h 26m
2026-06-28 ETH629 BKK → ADD Jun 28, 18:55 UTCJun 29, 10:59 UTC16h 5m
2026-06-28 ETH629 BKK → ADD Jun 28, 13:59 UTCJun 28, 16:55 UTC2h 55m
2026-06-28 ETH628 - Jun 28, 09:55 UTCJun 28, 10:04 UTC10m
2026-06-28 ETH628 - Jun 28, 07:09 UTCJun 28, 09:15 UTC2h 5m
2026-06-27 ETH628 - Jun 27, 16:00 UTCJun 28, 05:40 UTC13h 40m
2026-06-26 ETH737 MXP → ADD Jun 26, 22:19 UTCJun 27, 16:04 UTC17h 45m
2026-06-26 ETH737 MXP → ADD Jun 26, 19:14 UTCJun 26, 20:00 UTC45m
2026-06-26 ETH736 MXP → ZRH Jun 26, 05:19 UTCJun 26, 05:50 UTC30m
2026-06-26 ETH736 - Jun 26, 01:20 UTCJun 26, 03:45 UTC2h 25m
2026-06-24 ETH687 DEL → ADD Jun 24, 21:40 UTCJun 25, 00:05 UTC2h 25m
2026-06-24 ETH688 - Jun 24, 04:34 UTCJun 24, 19:55 UTC15h 20m
2026-06-24 ETH686 - Jun 24, 01:34 UTCJun 24, 02:20 UTC45m
2026-06-22 ETH741 MAD → ADD Jun 22, 21:40 UTCJun 23, 00:30 UTC2h 50m
2026-06-22 ETH741 MAD → ADD Jun 22, 19:00 UTCJun 22, 19:49 UTC50m
2026-06-22 ETH740 - Jun 22, 05:20 UTCJun 22, 06:15 UTC55m
2026-06-21 ETH740 - Jun 21, 15:15 UTCJun 22, 03:30 UTC12h 15m
2026-06-20 ETH725 - Jun 20, 20:20 UTCJun 21, 15:19 UTC19h 0m
2026-06-20 ETH725 - Jun 20, 17:39 UTCJun 20, 17:59 UTC20m
2026-06-20 ETH724 VIE → CPH Jun 20, 05:34 UTCJun 20, 06:45 UTC1h 10m
2026-06-19 ETH724 - Jun 19, 08:29 UTCJun 20, 03:54 UTC19h 25m
2026-06-19 ETH515 - Jun 19, 02:19 UTCJun 20, 02:00 UTC23h 40m
2026-06-18 ETH514 LFW → JFK Jun 18, 14:45 UTCJun 18, 23:10 UTC8h 25m
2026-06-17 ETH514 LFW → JFK Jun 17, 22:05 UTCJun 18, 22:00 UTC23h 55m
2026-06-17 ETH725 - Jun 17, 21:05 UTCJun 18, 15:35 UTC18h 30m
2026-06-17 ETH725 - Jun 17, 18:10 UTCJun 17, 19:20 UTC1h 10m
2026-06-17 ETH724 VIE → CPH Jun 17, 05:05 UTCJun 17, 06:30 UTC1h 25m
2026-06-16 ETH724 - Jun 16, 07:20 UTCJun 17, 03:40 UTC20h 21m
2026-06-15 ETH815 ADD → JRO Jun 15, 22:05 UTCJun 16, 09:30 UTC11h 25m
2026-06-15 ETH673 - Jun 15, 15:25 UTCJun 15, 15:40 UTC15m
2026-06-15 ETH673 - Jun 15, 11:49 UTCJun 15, 13:45 UTC1h 55m
2026-06-15 ETH672 - Jun 15, 08:40 UTCJun 15, 10:30 UTC1h 50m
2026-06-15 ETH672 - Jun 15, 06:49 UTCJun 15, 07:10 UTC20m
2026-06-14 ETH913 ADD → ADD Jun 14, 13:55 UTCJun 14, 14:20 UTC25m
2026-06-13 ETH741 MAD → ADD Jun 13, 21:40 UTCJun 14, 10:30 UTC12h 50m

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

Mode-S 040140 frequently asked

What is Mode-S code 040140?
040140 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AUO.
Where is Mode-S 040140 registered?
Mode-S code 040140 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040140 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040140, octal 01000500, decimal 262,464.
What flights does 040140 operate?
Mode-S 040140 has broadcast 20 distinct callsigns, including ETH628, ETH645, ETH629, ETH741, ETH740.