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sensors Mode-S transponder

040155

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-AVM · BOEING 737 MAX 8

Hex
040155
Octal
01000525
Decimal
262,485
Country
ET
Tail
ET-AVM
Type
B38M
No current signal · last broadcast Jul 26, 13:30 UTC
Flights observed
86
Distinct callsigns
20
Country
ET
Last broadcast
Jul 26, 13:30 UTC

Last known position

Most recent position reported by Mode-S 040155.

Country allocation

The ICAO 24-bit address 040155 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
ETH404 - 8 2026-07-22
ETH720 - 7 2026-07-08
ETH849 Ethiopian Airlines 5 2026-07-23
ETH858 Ethiopian Airlines 4 2026-07-23
ETH723 - 4 2026-07-09
ETH614 Ethiopian Airlines 4 2026-05-03
ETH418 - 4 2026-07-11
ETH415 - 4 2026-07-22
ETH963 - 3 2026-07-15
ETH859 Ethiopian Airlines 3 2026-07-04
ETH693 - 3 2026-06-30
ETH615 Ethiopian Airlines 3 2026-05-04
ETH419 - 3 2026-07-11
ETH406 Ethiopian Airlines 3 2026-05-11
ETH962 - 2 2026-07-16
ETH949 - 2 2026-07-09
ETH948 - 2 2026-07-10
ETH721 Ethiopian Airlines 2 2026-06-22
ETH692 - 2 2026-06-18
ETH691 - 2 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ETH931 ADD → ENU Jul 26, 10:50 UTCJul 26, 13:30 UTC2h 40m
2026-07-23 ETH858 JNB → ADD Jul 23, 21:10 UTCJul 23, 21:35 UTC25m
2026-07-23 ETH849 ADD → JNB Jul 23, 18:15 UTCJul 23, 18:45 UTC30m
2026-07-22 ETH415 - Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-22 ETH404 - Jul 22, 02:20 UTCJul 22, 02:50 UTC30m
2026-07-19 ETH697 MAA → ADD Jul 19, 21:50 UTCJul 19, 22:25 UTC35m
2026-07-19 ETH926 ACC → ADD Jul 19, 07:55 UTCJul 19, 19:50 UTC11h 55m
2026-07-18 ETH904 LOS → ADD Jul 18, 05:35 UTCJul 18, 06:05 UTC30m
2026-07-16 ETH962 - Jul 16, 00:50 UTCJul 16, 01:25 UTC35m
2026-07-15 ETH963 - Jul 15, 22:55 UTCJul 15, 23:20 UTC25m
2026-07-14 ETH928 - Jul 14, 21:55 UTCJul 14, 22:35 UTC40m
2026-07-13 ETH691 - Jul 13, 10:55 UTCJul 13, 11:15 UTC20m
2026-07-13 ETH690 - Jul 13, 02:40 UTCJul 13, 03:05 UTC25m
2026-07-11 ETH419 - Jul 11, 13:10 UTCJul 11, 13:35 UTC25m
2026-07-11 ETH418 - Jul 11, 01:15 UTCJul 11, 11:40 UTC10h 25m
2026-07-10 ETH963 - Jul 10, 23:20 UTCJul 10, 23:45 UTC25m
2026-07-10 ETH948 - Jul 10, 01:15 UTCJul 10, 01:35 UTC20m
2026-07-09 ETH949 - Jul 9, 23:40 UTCJul 10, 00:05 UTC25m
2026-07-09 ETH723 - Jul 9, 05:55 UTCJul 9, 07:45 UTC1h 50m
2026-07-08 ETH720 - Jul 8, 23:45 UTCJul 9, 01:35 UTC1h 50m
2026-07-08 ETH948 - Jul 8, 01:20 UTCJul 8, 01:35 UTC15m
2026-07-07 ETH949 - Jul 7, 23:40 UTCJul 8, 00:00 UTC20m
2026-07-06 ETH962 - Jul 6, 00:55 UTCJul 6, 01:20 UTC25m
2026-07-05 ETH963 - Jul 5, 22:55 UTCJul 5, 23:20 UTC25m
2026-07-04 ETH858 JNB → ADD Jul 4, 21:05 UTCJul 4, 21:30 UTC25m
2026-07-04 ETH849 - Jul 4, 06:30 UTCJul 4, 19:10 UTC12h 40m
2026-07-04 ETH859 ADD → JNB Jul 4, 01:35 UTCJul 4, 02:10 UTC35m
2026-07-03 ETH859 ADD → JNB Jul 3, 05:20 UTCJul 4, 02:10 UTC20h 50m
2026-07-03 ETH859 ADD → JNB Jul 3, 05:10 UTCJul 4, 02:10 UTC21h 0m
2026-07-03 ETH404 - Jul 3, 02:20 UTCJul 3, 02:55 UTC35m
2026-07-02 ETH723 - Jul 2, 05:25 UTCJul 2, 07:15 UTC1h 50m
2026-07-01 ETH720 - Jul 1, 23:55 UTCJul 2, 01:35 UTC1h 40m
2026-06-30 ETH693 - Jun 30, 04:35 UTCJun 30, 05:00 UTC25m
2026-06-29 ETH691 - Jun 29, 10:40 UTCJun 30, 02:10 UTC15h 30m
2026-06-29 ETH690 - Jun 29, 01:55 UTCJun 29, 02:20 UTC25m
2026-06-27 ETH687 DEL → ADD Jun 27, 21:50 UTCJun 28, 00:30 UTC2h 40m
2026-06-27 ETH688 - Jun 27, 17:34 UTCJun 27, 20:09 UTC2h 35m
2026-06-24 ETH858 JNB → ADD Jun 24, 21:00 UTCJun 24, 21:19 UTC20m
2026-06-24 ETH849 - Jun 24, 18:34 UTCJun 24, 19:04 UTC30m
2026-06-22 ETH721 IST → ADD Jun 22, 21:10 UTCJun 22, 22:49 UTC1h 40m
2026-06-21 ETH720 - Jun 21, 23:40 UTCJun 22, 01:25 UTC1h 45m
2026-06-18 ETH693 - Jun 18, 05:10 UTCJun 18, 05:35 UTC25m
2026-06-18 ETH692 - Jun 18, 01:55 UTCJun 18, 02:20 UTC25m
2026-06-15 ETH721 IST → ADD Jun 15, 21:20 UTCJun 15, 23:04 UTC1h 45m
2026-06-14 ETH720 - Jun 14, 23:50 UTCJun 15, 01:50 UTC2h 0m
2026-06-14 ETH720 - Jun 14, 05:20 UTCJun 15, 01:50 UTC20h 30m
2026-06-14 ETH404 ADD → TLV Jun 14, 02:25 UTCJun 14, 03:00 UTC35m
2026-06-13 ETH404 ADD → TLV Jun 13, 04:45 UTCJun 14, 03:00 UTC22h 15m
2026-06-13 ETH404 ADD → TLV Jun 13, 02:00 UTCJun 13, 02:35 UTC35m
2026-06-11 ETH858 JNB → ADD Jun 11, 21:00 UTCJun 11, 21:25 UTC25m

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

Mode-S 040155 frequently asked

What is Mode-S code 040155?
040155 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AVM.
Where is Mode-S 040155 registered?
Mode-S code 040155 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040155 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040155, octal 01000525, decimal 262,485.
What flights does 040155 operate?
Mode-S 040155 has broadcast 20 distinct callsigns, including ETH404, ETH720, ETH849, ETH858, ETH723.