Apparatus

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sensors Mode-S transponder

040105

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-ASK · BOEING 777-300ER

Hex
040105
Octal
01000405
Decimal
262,405
Country
ET
Tail
ET-ASK
Type
B77W
No current signal · last broadcast 6h ago
Flights observed
67
Distinct callsigns
8
Country
ET
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 040105.

Country allocation

The ICAO 24-bit address 040105 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 8 distinct

Callsign Airline Flights Last seen
ETH607 Ethiopian Airlines 25 2026-05-26
ETH606 Ethiopian Airlines 14 2026-05-30
ETH318 Ethiopian Airlines 8 2026-05-12
ETH637 Ethiopian Airlines 6 2026-05-17
ETH636 Ethiopian Airlines 5 2026-05-17
ETH640 Ethiopian Airlines 4 2026-05-28
ETH611 Ethiopian Airlines 4 2026-05-28
ETH610 Ethiopian Airlines 1 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ETH606 ADD → CAN May 30, 00:35 UTCMay 30, 03:40 UTC3h 5m
2026-05-28 ETH611 BOM → ADD May 28, 22:45 UTCMay 28, 23:20 UTC35m
2026-05-28 ETH640 ADD → BOM May 28, 19:10 UTCMay 28, 20:05 UTC55m
2026-05-26 ETH607 CAN → ADD May 26, 19:05 UTCMay 26, 22:39 UTC3h 35m
2026-05-26 ETH607 CAN → ADD May 26, 17:15 UTCMay 26, 17:25 UTC10m
2026-05-26 ETH606 ADD → CAN May 26, 00:44 UTCMay 26, 03:55 UTC3h 10m
2026-05-23 ETH607 CAN → ADD May 23, 18:25 UTCMay 23, 21:45 UTC3h 20m
2026-05-23 ETH606 ADD → CAN May 23, 01:00 UTCMay 23, 03:50 UTC2h 49m
2026-05-21 ETH611 BOM → ADD May 21, 22:50 UTCMay 21, 23:25 UTC35m
2026-05-21 ETH640 ADD → BOM May 21, 19:05 UTCMay 21, 19:55 UTC50m
2026-05-19 ETH611 BOM → ADD May 19, 23:00 UTCMay 19, 23:30 UTC30m
2026-05-19 ETH640 ADD → BOM May 19, 06:00 UTCMay 19, 19:55 UTC13h 55m
2026-05-19 ETH610 ADD → BOM May 19, 02:00 UTCMay 19, 02:55 UTC55m
2026-05-17 ETH637 TFU → ADD May 17, 04:40 UTCMay 17, 23:00 UTC18h 20m
2026-05-17 ETH636 ADD → TFU May 17, 02:35 UTCMay 17, 23:00 UTC20h 25m
2026-05-15 ETH611 BOM → ADD May 15, 23:00 UTCMay 15, 23:20 UTC20m
2026-05-15 ETH640 ADD → BOM May 15, 19:30 UTCMay 15, 20:15 UTC45m
2026-05-13 ETH607 CAN → ADD May 13, 18:50 UTCMay 13, 22:10 UTC3h 20m
2026-05-13 ETH607 CAN → ADD May 13, 17:20 UTCMay 13, 17:30 UTC10m
2026-05-13 ETH606 ADD → CAN May 13, 02:50 UTCMay 13, 03:50 UTC1h 0m
2026-05-12 ETH318 ADD → NBO May 12, 09:25 UTCMay 12, 09:35 UTC10m
2026-05-10 ETH636 ADD → TFU May 10, 03:55 UTCMay 10, 21:25 UTC17h 30m
2026-05-08 ETH637 TFU → ADD May 8, 03:35 UTCMay 8, 21:20 UTC17h 45m
2026-05-07 ETH636 ADD → TFU May 7, 16:35 UTCMay 8, 04:54 UTC12h 20m
2026-05-06 ETH607 CAN → ADD May 6, 21:20 UTCMay 7, 16:40 UTC19h 20m
2026-05-06 ETH607 CAN → ADD May 6, 21:10 UTCMay 7, 16:40 UTC19h 30m
2026-05-06 ETH607 CAN → ADD May 6, 18:25 UTCMay 7, 16:40 UTC22h 16m
2026-05-06 ETH607 CAN → ADD May 6, 16:50 UTCMay 6, 17:05 UTC15m
2026-05-06 ETH606 ADD → CAN May 6, 02:30 UTCMay 6, 03:50 UTC1h 20m
2026-05-04 ETH607 CAN → ADD May 4, 16:55 UTCMay 4, 21:50 UTC4h 56m
2026-05-04 ETH606 ADD → CAN May 4, 02:15 UTCMay 4, 05:00 UTC2h 45m
2026-05-02 ETH607 CAN → ADD May 2, 18:25 UTCMay 2, 21:40 UTC3h 15m
2026-05-02 ETH606 ADD → CAN May 2, 00:55 UTCMay 2, 03:55 UTC3h 0m
2026-05-01 ETH318 ADD → NBO May 1, 09:40 UTCMay 1, 09:50 UTC10m
2026-04-30 ETH607 CAN → ADD Apr 30, 19:05 UTCApr 30, 22:30 UTC3h 25m
2026-04-30 ETH607 CAN → ADD Apr 30, 17:10 UTCApr 30, 17:25 UTC15m
2026-04-30 ETH606 ADD → CAN Apr 30, 01:30 UTCApr 30, 04:35 UTC3h 5m
2026-04-28 ETH607 CAN → ADD Apr 28, 03:20 UTCApr 28, 22:40 UTC19h 20m
2026-04-28 ETH606 ADD → CAN Apr 28, 01:20 UTCApr 28, 22:40 UTC21h 20m
2026-04-28 ETH606 ADD → CAN Apr 28, 01:10 UTCApr 28, 22:40 UTC21h 30m
2026-04-27 ETH318 ADD → NBO Apr 27, 09:30 UTCApr 27, 09:40 UTC10m
2026-04-26 ETH607 CAN → ADD Apr 26, 16:50 UTCApr 26, 21:50 UTC5h 0m
2026-04-26 ETH606 ADD → CAN Apr 26, 01:20 UTCApr 26, 04:05 UTC2h 45m
2026-04-25 ETH318 ADD → NBO Apr 25, 09:25 UTCApr 25, 09:40 UTC15m
2026-04-24 ETH637 TFU → ADD Apr 24, 03:40 UTCApr 24, 23:10 UTC19h 30m
2026-04-24 ETH637 TFU → ADD Apr 24, 01:55 UTCApr 24, 23:10 UTC21h 15m
2026-04-22 ETH637 TFU → ADD Apr 22, 20:05 UTCApr 22, 23:20 UTC3h 15m
2026-04-22 ETH637 TFU → ADD Apr 22, 03:20 UTCApr 22, 23:20 UTC20h 0m
2026-04-22 ETH636 ADD → TFU Apr 22, 01:35 UTCApr 22, 23:20 UTC21h 45m
2026-04-21 ETH636 ADD → TFU Apr 21, 09:00 UTCApr 22, 04:40 UTC19h 40m

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

Mode-S 040105 frequently asked

What is Mode-S code 040105?
040105 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-ASK.
Where is Mode-S 040105 registered?
Mode-S code 040105 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040105 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 040105, octal 01000405, decimal 262,405.
What flights does 040105 operate?
Mode-S 040105 has broadcast 8 distinct callsigns, including ETH607, ETH606, ETH318, ETH637, ETH636.