Apparatus

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sensors Mode-S transponder

040127

ICAO 24-bit transponder address · allocated to Ethiopia

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

Hex
040127
Octal
01000447
Decimal
262,439
Country
ET
Tail
ET-ATK
Type
B788
No current signal · last broadcast 8h ago
Flights observed
140
Distinct callsigns
20
Country
ET
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 040127.

Country allocation

The ICAO 24-bit address 040127 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
ETH715 Ethiopian Airlines 17 2026-06-13
ETH714 - 17 2026-06-13
ETH736 - 11 2026-07-13
ETH737 - 9 2026-07-13
ETH718 - 6 2026-06-22
ETH516 - 6 2026-07-06
ETH712 - 5 2026-07-09
ETH858 Ethiopian Airlines 4 2026-05-22
ETH739 - 4 2026-06-20
ETH713 - 4 2026-07-10
ETH680 - 4 2026-06-09
ETH517 - 4 2026-07-07
ETH849 Ethiopian Airlines 3 2026-04-30
ETH741 Ethiopian Airlines 3 2026-07-04
ETH738 - 3 2026-06-20
ETH719 - 3 2026-06-23
ETH681 - 3 2026-06-10
ETH609 Ethiopian Airlines 3 2026-06-05
ETH909 Ethiopian Airlines 2 2026-05-12
ETH859 Ethiopian Airlines 2 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ETH737 - Jul 13, 21:55 UTCJul 14, 00:55 UTC3h 0m
2026-07-13 ETH737 ZRH → MXP Jul 13, 19:20 UTCJul 13, 20:00 UTC40m
2026-07-13 ETH736 MXP → ZRH Jul 13, 05:15 UTCJul 13, 05:50 UTC35m
2026-07-13 ETH736 - Jul 13, 01:15 UTCJul 13, 03:40 UTC2h 25m
2026-07-13 ETH736 - Jul 13, 00:40 UTCJul 13, 01:10 UTC30m
2026-07-10 ETH713 - Jul 10, 22:30 UTCJul 11, 00:10 UTC1h 40m
2026-07-10 ETH716 - Jul 10, 05:20 UTCJul 10, 20:40 UTC15h 20m
2026-07-09 ETH712 - Jul 9, 09:00 UTCJul 10, 03:15 UTC18h 15m
2026-07-08 ETH737 - Jul 8, 21:45 UTCJul 9, 09:00 UTC11h 15m
2026-07-08 ETH737 ZRH → MXP Jul 8, 19:15 UTCJul 8, 19:50 UTC35m
2026-07-08 ETH736 MXP → ZRH Jul 8, 05:15 UTCJul 8, 05:50 UTC35m
2026-07-07 ETH736 - Jul 7, 10:20 UTCJul 8, 03:50 UTC17h 30m
2026-07-07 ETH736 - Jul 7, 03:50 UTCJul 8, 03:45 UTC23h 55m
2026-07-07 ETH517 - Jul 7, 03:40 UTCJul 8, 01:45 UTC22h 5m
2026-07-06 ETH516 - Jul 6, 14:55 UTCJul 6, 23:45 UTC8h 50m
2026-07-05 ETH516 - Jul 5, 21:10 UTCJul 6, 15:50 UTC18h 40m
2026-07-04 ETH741 MAD → ADD Jul 4, 23:50 UTCJul 5, 18:55 UTC19h 5m
2026-07-04 ETH741 MAD → ADD Jul 4, 21:55 UTCJul 5, 18:55 UTC21h 0m
2026-07-04 ETH741 MAD → ADD Jul 4, 19:10 UTCJul 4, 20:05 UTC55m
2026-07-04 ETH740 - Jul 4, 05:15 UTCJul 4, 06:00 UTC45m
2026-07-04 ETH740 - Jul 4, 00:15 UTCJul 4, 03:30 UTC3h 15m
2026-06-25 ETH848 - Jun 25, 06:40 UTCJun 25, 17:25 UTC10h 45m
2026-06-25 ETH859 ADD → JNB Jun 25, 01:30 UTCJun 25, 01:59 UTC30m
2026-06-23 ETH719 - Jun 23, 10:49 UTCJun 23, 14:49 UTC4h 0m
2026-06-22 ETH718 - Jun 22, 14:49 UTCJun 23, 05:09 UTC14h 20m
2026-06-22 ETH718 - Jun 22, 07:49 UTCJun 23, 05:09 UTC21h 20m
2026-06-22 ETH718 - Jun 22, 07:40 UTCJun 23, 05:09 UTC21h 30m
2026-06-22 ETH515 - Jun 22, 02:25 UTCJun 23, 01:45 UTC23h 20m
2026-06-21 ETH514 LFW → JFK Jun 21, 15:09 UTCJun 21, 23:24 UTC8h 15m
2026-06-20 ETH739 - Jun 20, 21:49 UTCJun 21, 16:04 UTC18h 15m
2026-06-20 ETH739 - Jun 20, 20:29 UTCJun 21, 16:04 UTC19h 35m
2026-06-20 ETH738 - Jun 20, 00:29 UTCJun 20, 04:09 UTC3h 40m
2026-06-18 ETH713 FCO → ADD Jun 18, 21:25 UTCJun 18, 23:40 UTC2h 15m
2026-06-17 ETH712 - Jun 17, 16:00 UTCJun 18, 03:10 UTC11h 10m
2026-06-16 ETH737 MXP → ADD Jun 16, 21:50 UTCJun 17, 16:00 UTC18h 10m
2026-06-15 ETH736 - Jun 15, 13:40 UTCJun 16, 05:00 UTC15h 20m
2026-06-13 ETH715 ARN → ADD Jun 13, 20:00 UTCJun 13, 23:55 UTC3h 55m
2026-06-13 ETH715 ARN → ADD Jun 13, 17:50 UTCJun 13, 18:35 UTC45m
2026-06-13 ETH714 ARN → OSL Jun 13, 05:40 UTCJun 13, 06:25 UTC45m
2026-06-12 ETH714 - Jun 12, 23:45 UTCJun 13, 04:05 UTC4h 20m
2026-06-11 ETH687 DEL → ADD Jun 11, 21:20 UTCJun 11, 22:00 UTC40m
2026-06-11 ETH688 ADD → DEL Jun 11, 18:55 UTCJun 11, 19:40 UTC45m
2026-06-10 ETH681 - Jun 10, 09:05 UTCJun 10, 11:50 UTC2h 45m
2026-06-09 ETH680 - Jun 9, 14:40 UTCJun 10, 03:50 UTC13h 10m
2026-06-09 ETH680 - Jun 9, 08:35 UTCJun 10, 03:50 UTC19h 15m
2026-06-09 ETH517 LFW → ADD Jun 9, 02:00 UTCJun 10, 01:30 UTC23h 30m
2026-06-08 ETH516 LFW → IAD Jun 8, 15:00 UTCJun 8, 23:35 UTC8h 35m
2026-06-07 ETH516 LFW → IAD Jun 7, 23:50 UTCJun 8, 23:35 UTC23h 45m
2026-06-07 ETH715 ARN → ADD Jun 7, 21:50 UTCJun 8, 15:50 UTC18h 0m
2026-06-07 ETH715 ARN → ADD Jun 7, 20:20 UTCJun 8, 15:50 UTC19h 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-ATK page for operator, model, and routing details .

Mode-S 040127 frequently asked

What is Mode-S code 040127?
040127 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-ATK.
Where is Mode-S 040127 registered?
Mode-S code 040127 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040127 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040127, octal 01000447, decimal 262,439.
What flights does 040127 operate?
Mode-S 040127 has broadcast 20 distinct callsigns, including ETH715, ETH714, ETH736, ETH737, ETH718.