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sensors Mode-S transponder

040103

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-ASI · BOEING 787-8 Dreamliner

Hex
040103
Octal
01000403
Decimal
262,403
Country
ET
Tail
ET-ASI
Type
B788
No current signal · last broadcast Jul 26, 20:50 UTC
Flights observed
160
Distinct callsigns
20
Country
ET
Last broadcast
Jul 26, 20:50 UTC

Last known position

Most recent position reported by Mode-S 040103.

Country allocation

The ICAO 24-bit address 040103 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
DRC098 - 25 2026-07-26
UGD111 - 11 2026-05-03
UGD110 - 11 2026-05-03
DRC099 - 11 2026-07-26
ETH741 Ethiopian Airlines 7 2026-06-09
ETH715 Ethiopian Airlines 7 2026-06-02
ETH740 Ethiopian Airlines 6 2026-06-09
ETH737 Ethiopian Airlines 6 2026-06-11
ETH736 Ethiopian Airlines 6 2026-06-11
ETH725 Ethiopian Airlines 6 2026-05-27
ETH724 Ethiopian Airlines 6 2026-05-27
ETH714 Ethiopian Airlines 6 2026-06-02
ETH644 - 6 2026-06-15
UGD430 - 5 2026-05-02
ETH645 Ethiopian Airlines 5 2026-06-15
ETH727 Ethiopian Airlines 4 2026-06-23
ETH726 - 4 2026-06-23
UGD431 - 3 2026-04-30
ETH672 - 3 2026-06-21
ETH909 - 2 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DRC099 - Jul 26, 19:10 UTCJul 26, 20:50 UTC1h 40m
2026-07-26 DRC098 - Jul 26, 01:25 UTCJul 26, 17:05 UTC15h 41m
2026-07-25 DRC098 - Jul 25, 20:50 UTCJul 26, 17:05 UTC20h 16m
2026-07-25 DRC098 - Jul 25, 19:10 UTCJul 26, 17:05 UTC21h 56m
2026-07-25 DRC098 - Jul 25, 14:55 UTCJul 25, 16:55 UTC2h 0m
2026-07-24 DRC098 - Jul 24, 20:50 UTCJul 25, 16:55 UTC20h 5m
2026-07-24 DRC098 - Jul 24, 19:40 UTCJul 25, 16:55 UTC21h 15m
2026-07-24 DRC098 - Jul 24, 15:05 UTCJul 24, 17:05 UTC2h 0m
2026-07-22 DRC099 - Jul 22, 20:10 UTCJul 23, 02:25 UTC6h 15m
2026-07-22 DRC098 - Jul 22, 14:55 UTCJul 22, 16:50 UTC1h 55m
2026-07-19 DRC099 - Jul 19, 19:35 UTCJul 20, 01:50 UTC6h 15m
2026-07-18 DRC098 - Jul 18, 20:50 UTCJul 19, 16:40 UTC19h 50m
2026-07-18 DRC099 - Jul 18, 19:35 UTCJul 19, 16:40 UTC21h 5m
2026-07-18 DRC098 - Jul 18, 10:25 UTCJul 18, 16:50 UTC6h 25m
2026-07-17 DRC098 - Jul 17, 20:50 UTCJul 18, 16:50 UTC20h 1m
2026-07-17 DRC099 - Jul 17, 20:25 UTCJul 18, 16:50 UTC20h 26m
2026-07-17 DRC098 - Jul 17, 15:00 UTCJul 17, 16:55 UTC1h 55m
2026-07-15 DRC099 - Jul 15, 23:35 UTCJul 16, 05:50 UTC6h 15m
2026-07-15 DRC098 - Jul 15, 10:35 UTCJul 15, 17:05 UTC6h 30m
2026-07-12 DRC099 - Jul 12, 19:45 UTCJul 12, 21:45 UTC2h 0m
2026-07-12 DRC098 - Jul 12, 01:45 UTCJul 12, 17:05 UTC15h 20m
2026-07-11 DRC099 - Jul 11, 19:20 UTCJul 12, 17:05 UTC21h 45m
2026-07-11 DRC098 - Jul 11, 10:35 UTCJul 11, 17:10 UTC6h 35m
2026-07-10 DRC098 BRU → BRU Jul 10, 20:45 UTCJul 11, 17:10 UTC20h 25m
2026-07-10 DRC098 - Jul 10, 10:20 UTCJul 10, 17:10 UTC6h 50m
2026-07-08 DRC099 - Jul 8, 19:55 UTCJul 8, 21:40 UTC1h 45m
2026-07-08 DRC098 - Jul 8, 14:40 UTCJul 8, 16:45 UTC2h 5m
2026-07-05 DRC099 - Jul 5, 20:05 UTCJul 6, 02:25 UTC6h 20m
2026-07-04 DRC098 - Jul 4, 20:50 UTCJul 5, 16:45 UTC19h 55m
2026-07-04 DRC098 BRU → BRU Jul 4, 19:30 UTCJul 5, 16:45 UTC21h 15m
2026-07-04 DRC098 - Jul 4, 02:25 UTCJul 4, 16:55 UTC14h 30m
2026-07-03 DRC098 - Jul 3, 20:50 UTCJul 4, 16:55 UTC20h 5m
2026-07-03 DRC098 - Jul 3, 20:15 UTCJul 4, 16:55 UTC20h 40m
2026-07-03 DRC098 - Jul 3, 14:40 UTCJul 3, 16:40 UTC2h 0m
2026-07-01 DRC099 - Jul 1, 20:20 UTCJul 1, 21:55 UTC1h 35m
2026-07-01 DRC098 - Jul 1, 15:10 UTCJul 1, 17:10 UTC2h 0m
2026-06-25 ETH731 DUB → ADD Jun 25, 20:14 UTCJun 25, 23:09 UTC2h 55m
2026-06-25 ETH731 DUB → ADD Jun 25, 17:49 UTCJun 25, 18:39 UTC50m
2026-06-25 ETH730 VIE → WAW Jun 25, 05:25 UTCJun 25, 06:20 UTC55m
2026-06-24 ETH730 CPT → VIE Jun 24, 13:30 UTCJun 25, 03:50 UTC14h 20m
2026-06-23 ETH727 FCO → ADD Jun 23, 21:20 UTCJun 24, 11:59 UTC14h 40m
2026-06-23 ETH727 FCO → ADD Jun 23, 17:54 UTCJun 23, 19:34 UTC1h 40m
2026-06-23 ETH726 MRS → MAN Jun 23, 05:34 UTCJun 23, 07:19 UTC1h 45m
2026-06-22 ETH726 - Jun 22, 13:25 UTCJun 23, 03:49 UTC14h 25m
2026-06-21 ETH602 ADD → DXB Jun 21, 16:54 UTCJun 22, 11:35 UTC18h 40m
2026-06-21 ETH673 - Jun 21, 15:40 UTCJun 22, 11:35 UTC19h 55m
2026-06-21 ETH673 - Jun 21, 11:55 UTCJun 21, 13:50 UTC1h 55m
2026-06-21 ETH672 - Jun 21, 08:30 UTCJun 21, 10:19 UTC1h 50m
2026-06-21 ETH672 - Jun 21, 06:24 UTCJun 21, 06:55 UTC30m
2026-06-21 ETH672 - Jun 21, 01:10 UTCJun 21, 05:40 UTC4h 30m

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

Mode-S 040103 frequently asked

What is Mode-S code 040103?
040103 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-ASI.
Where is Mode-S 040103 registered?
Mode-S code 040103 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040103 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040103, octal 01000403, decimal 262,403.
What flights does 040103 operate?
Mode-S 040103 has broadcast 20 distinct callsigns, including DRC098, UGD111, UGD110, DRC099, ETH741.