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sensors Mode-S transponder

040171

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-AWN · AIRBUS A-350-900

Hex
040171
Octal
01000561
Decimal
262,513
Country
ET
Tail
ET-AWN
Type
A359
No current signal · last broadcast Jul 26, 07:00 UTC
Flights observed
200
Distinct callsigns
20
Country
ET
Last broadcast
Jul 26, 07:00 UTC

Last known position

Most recent position reported by Mode-S 040171.

Country allocation

The ICAO 24-bit address 040171 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
ETH506 Ethiopian Airlines 45 2026-07-25
ETH507 Ethiopian Airlines 28 2026-07-26
ETH638 Ethiopian Airlines 13 2026-07-24
ETH639 Ethiopian Airlines 12 2026-07-24
ETH735 Ethiopian Airlines 8 2026-07-22
ETH734 Ethiopian Airlines 8 2026-07-21
ETH707 - 6 2026-07-14
ETH706 - 6 2026-07-13
ETH672 - 6 2026-07-03
ETH604 - 6 2026-07-04
ETH909 - 5 2026-06-20
ETH751 Ethiopian Airlines 5 2026-07-19
ETH750 Ethiopian Airlines 5 2026-07-19
ETH673 - 5 2026-07-03
ETH729 Ethiopian Airlines 4 2026-04-17
ETH908 - 3 2026-06-18
ETH736 Ethiopian Airlines 3 2026-04-21
ETH728 Ethiopian Airlines 3 2026-04-17
ETH727 Ethiopian Airlines 3 2026-05-14
ETH605 - 3 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ETH507 GRU → ADD Jul 26, 05:55 UTCJul 26, 07:00 UTC1h 6m
2026-07-26 ETH507 GRU → ADD Jul 26, 02:15 UTCJul 26, 04:15 UTC2h 0m
2026-07-25 ETH506 ADD → GRU Jul 25, 22:05 UTCJul 26, 00:40 UTC2h 35m
2026-07-25 ETH506 ADD → GRU Jul 25, 19:00 UTCJul 25, 20:35 UTC1h 35m
2026-07-24 ETH506 ADD → GRU Jul 24, 21:40 UTCJul 25, 20:15 UTC22h 35m
2026-07-24 ETH639 KUL → SIN Jul 24, 18:25 UTCJul 24, 22:05 UTC3h 40m
2026-07-24 ETH639 KUL → SIN Jul 24, 15:35 UTCJul 24, 16:20 UTC45m
2026-07-24 ETH638 ADD → SIN Jul 24, 08:55 UTCJul 24, 09:40 UTC45m
2026-07-24 ETH638 ADD → SIN Jul 24, 03:00 UTCJul 24, 07:15 UTC4h 15m
2026-07-22 ETH735 CDG → ADD Jul 22, 20:00 UTCJul 22, 23:10 UTC3h 10m
2026-07-21 ETH734 ADD → CDG Jul 21, 13:40 UTCJul 22, 04:35 UTC14h 55m
2026-07-21 ETH734 ADD → CDG Jul 21, 06:40 UTCJul 22, 04:35 UTC21h 55m
2026-07-21 ETH507 GRU → ADD Jul 21, 02:55 UTCJul 21, 05:05 UTC2h 10m
2026-07-20 ETH506 - Jul 20, 22:30 UTCJul 21, 01:10 UTC2h 40m
2026-07-20 ETH506 - Jul 20, 18:35 UTCJul 20, 19:55 UTC1h 20m
2026-07-20 ETH506 - Jul 20, 10:15 UTCJul 20, 10:30 UTC15m
2026-07-19 ETH751 BRU → ADD Jul 19, 19:55 UTCJul 19, 23:00 UTC3h 5m
2026-07-19 ETH750 ADD → BRU Jul 19, 02:00 UTCJul 19, 05:15 UTC3h 15m
2026-07-18 ETH750 ADD → BRU Jul 18, 06:25 UTCJul 19, 05:15 UTC22h 50m
2026-07-18 ETH507 GRU → ADD Jul 18, 02:45 UTCJul 18, 04:55 UTC2h 11m
2026-07-17 ETH506 - Jul 17, 22:40 UTCJul 18, 01:05 UTC2h 25m
2026-07-17 ETH506 - Jul 17, 19:40 UTCJul 17, 21:10 UTC1h 30m
2026-07-17 ETH453 - Jul 17, 00:55 UTCJul 17, 01:09 UTC15m
2026-07-16 ETH452 - Jul 16, 22:35 UTCJul 16, 22:55 UTC20m
2026-07-16 ETH507 - Jul 16, 06:15 UTCJul 16, 07:30 UTC1h 15m
2026-07-16 ETH507 - Jul 16, 02:30 UTCJul 16, 04:40 UTC2h 10m
2026-07-15 ETH506 - Jul 15, 22:15 UTCJul 16, 00:50 UTC2h 35m
2026-07-15 ETH506 - Jul 15, 12:15 UTCJul 15, 20:45 UTC8h 30m
2026-07-15 ETH506 - Jul 15, 10:30 UTCJul 15, 10:45 UTC15m
2026-07-14 ETH707 - Jul 14, 23:20 UTCJul 14, 23:50 UTC30m
2026-07-14 ETH707 - Jul 14, 20:45 UTCJul 14, 23:15 UTC2h 29m
2026-07-13 ETH706 - Jul 13, 13:25 UTCJul 14, 04:05 UTC14h 40m
2026-07-13 ETH706 - Jul 13, 07:01 UTCJul 14, 04:05 UTC21h 5m
2026-07-13 ETH507 - Jul 13, 03:10 UTCJul 13, 05:25 UTC2h 15m
2026-07-12 ETH506 - Jul 12, 22:55 UTCJul 13, 01:25 UTC2h 30m
2026-07-12 ETH506 - Jul 12, 19:35 UTCJul 12, 21:15 UTC1h 40m
2026-07-11 ETH506 - Jul 11, 21:10 UTCJul 12, 20:15 UTC23h 5m
2026-07-11 ETH639 - Jul 11, 18:10 UTCJul 11, 21:40 UTC3h 30m
2026-07-11 ETH639 - Jul 11, 15:30 UTCJul 11, 16:05 UTC35m
2026-07-11 ETH638 - Jul 11, 09:00 UTCJul 11, 09:40 UTC40m
2026-07-11 ETH638 - Jul 11, 02:50 UTCJul 11, 07:25 UTC4h 35m
2026-07-10 ETH407 - Jul 10, 00:55 UTCJul 10, 01:55 UTC1h 0m
2026-07-09 ETH406 - Jul 9, 22:05 UTCJul 9, 23:10 UTC1h 5m
2026-07-08 ETH751 BRU → ADD Jul 8, 22:20 UTCJul 9, 22:15 UTC23h 55m
2026-07-08 ETH751 BRU → ADD Jul 8, 20:10 UTCJul 8, 22:50 UTC2h 40m
2026-07-08 ETH750 - Jul 8, 01:35 UTCJul 8, 04:55 UTC3h 20m
2026-07-05 ETH605 - Jul 5, 16:35 UTCJul 5, 23:00 UTC6h 25m
2026-07-04 ETH604 - Jul 4, 16:40 UTCJul 5, 08:30 UTC15h 50m
2026-07-04 ETH604 - Jul 4, 13:15 UTCJul 5, 08:30 UTC19h 15m
2026-07-03 ETH673 - Jul 3, 16:20 UTCJul 4, 11:35 UTC19h 15m

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

Mode-S 040171 frequently asked

What is Mode-S code 040171?
040171 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AWN.
Where is Mode-S 040171 registered?
Mode-S code 040171 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040171 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 07:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040171, octal 01000561, decimal 262,513.
What flights does 040171 operate?
Mode-S 040171 has broadcast 20 distinct callsigns, including ETH506, ETH507, ETH638, ETH639, ETH735.