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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 2h ago
Flights observed
171
Distinct callsigns
20
Country
ET
Last broadcast
2h ago

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 - 34 2026-07-12
ETH507 - 22 2026-07-13
ETH638 - 11 2026-07-11
ETH639 - 10 2026-07-11
ETH735 Ethiopian Airlines 7 2026-06-22
ETH734 - 6 2026-06-22
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
ETH673 - 5 2026-07-03
ETH751 Ethiopian Airlines 4 2026-07-08
ETH729 Ethiopian Airlines 4 2026-04-17
ETH908 - 3 2026-06-18
ETH750 - 3 2026-07-08
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
2026-07-14 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
2026-07-03 ETH673 - Jul 3, 15:55 UTCJul 4, 11:35 UTC19h 40m
2026-07-03 ETH673 - Jul 3, 12:15 UTCJul 3, 14:20 UTC2h 5m
2026-07-03 ETH672 - Jul 3, 09:00 UTCJul 3, 10:45 UTC1h 45m
2026-07-03 ETH672 - Jul 3, 06:55 UTCJul 3, 07:20 UTC25m
2026-07-03 ETH672 - Jul 3, 05:40 UTCJul 3, 06:10 UTC30m
2026-07-02 ETH507 - Jul 2, 05:05 UTCJul 2, 06:15 UTC1h 10m
2026-07-02 ETH507 EZE → GRU Jul 2, 01:20 UTCJul 2, 03:30 UTC2h 10m
2026-07-01 ETH506 ADD → GRU Jul 1, 20:55 UTCJul 1, 23:45 UTC2h 50m
2026-07-01 ETH506 ADD → GRU Jul 1, 17:30 UTCJul 1, 19:00 UTC1h 30m
2026-06-30 ETH506 ADD → GRU Jun 30, 21:35 UTCJul 1, 19:00 UTC21h 25m
2026-06-30 ETH639 KUL → SIN Jun 30, 18:30 UTCJul 1, 18:15 UTC23h 45m
2026-06-30 ETH639 KUL → SIN Jun 30, 15:30 UTCJun 30, 16:10 UTC40m
2026-06-30 ETH638 - Jun 30, 08:50 UTCJun 30, 09:35 UTC45m
2026-06-29 ETH638 - Jun 29, 13:14 UTCJun 30, 07:00 UTC17h 45m
2026-06-29 ETH809 - Jun 29, 00:24 UTCJun 29, 11:35 UTC11h 10m
2026-06-28 ETH604 - Jun 28, 08:19 UTCJun 28, 08:34 UTC15m
2026-06-28 ETH604 - Jun 28, 01:50 UTCJun 28, 01:59 UTC10m
2026-06-27 ETH453 CAI → ADD Jun 27, 00:50 UTCJun 27, 01:00 UTC10m
2026-06-26 ETH507 - Jun 26, 05:35 UTCJun 26, 23:00 UTC17h 25m
2026-06-26 ETH507 - Jun 26, 00:55 UTCJun 26, 03:05 UTC2h 10m
2026-06-25 ETH506 ADD → GRU Jun 25, 20:54 UTCJun 25, 23:24 UTC2h 30m
2026-06-25 ETH506 ADD → GRU Jun 25, 00:49 UTCJun 25, 18:29 UTC17h 40m
2026-06-24 ETH452 - Jun 24, 22:39 UTCJun 24, 22:55 UTC15m
2026-06-24 ETH507 - Jun 24, 05:54 UTCJun 24, 06:50 UTC55m
2026-06-24 ETH507 - Jun 24, 01:24 UTCJun 24, 03:29 UTC2h 5m
2026-06-23 ETH506 ADD → GRU Jun 23, 21:39 UTCJun 23, 23:59 UTC2h 20m
2026-06-22 ETH506 ADD → GRU Jun 22, 22:19 UTCJun 23, 19:59 UTC21h 40m
2026-06-22 ETH735 CDG → ADD Jun 22, 20:19 UTCJun 23, 19:59 UTC23h 40m
2026-06-22 ETH735 CDG → ADD Jun 22, 20:04 UTCJun 22, 22:59 UTC2h 55m

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 2h ago.
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.