Apparatus

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sensors Mode-S transponder

040049

ICAO 24-bit transponder address · allocated to Ethiopia

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

Hex
040049
Octal
01000111
Decimal
262,217
Country
ET
Tail
ET-AOS
Type
B788
No current signal · last broadcast 1d ago
Flights observed
197
Distinct callsigns
20
Country
ET
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 040049.

Country allocation

The ICAO 24-bit address 040049 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
ETH761 Ethiopian Airlines 41 2026-07-07
ETH760 Ethiopian Airlines 33 2026-07-06
ETH574 - 22 2026-07-12
ETH575 - 20 2026-07-12
ETH514 Ethiopian Airlines 7 2026-06-12
ETH724 Ethiopian Airlines 6 2026-05-30
ETH645 Ethiopian Airlines 6 2026-05-27
ETH644 Ethiopian Airlines 6 2026-05-27
ETH515 Ethiopian Airlines 6 2026-06-13
ETH725 Ethiopian Airlines 5 2026-05-30
ETH513 - 5 2026-07-09
ETH512 - 5 2026-07-08
ETH751 Ethiopian Airlines 3 2026-06-05
ETH712 - 3 2026-07-10
ETH519 Ethiopian Airlines 3 2026-05-25
ETH909 Ethiopian Airlines 2 2026-05-19
ETH906 Ethiopian Airlines 2 2026-07-02
ETH858 Ethiopian Airlines 2 2026-05-05
ETH849 Ethiopian Airlines 2 2026-05-05
ETH737 Ethiopian Airlines 2 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 ETH575 - Jul 12, 15:40 UTCJul 13, 02:15 UTC10h 35m
2026-07-12 ETH574 - Jul 12, 03:30 UTCJul 12, 12:50 UTC9h 20m
2026-07-11 ETH574 - Jul 11, 06:20 UTCJul 12, 01:45 UTC19h 25m
2026-07-11 ETH574 - Jul 11, 05:40 UTCJul 12, 01:45 UTC20h 5m
2026-07-10 ETH712 - Jul 10, 16:45 UTCJul 11, 03:45 UTC11h 1m
2026-07-10 ETH712 - Jul 10, 06:20 UTCJul 11, 03:45 UTC21h 25m
2026-07-10 ETH712 - Jul 10, 05:45 UTCJul 11, 03:45 UTC22h 0m
2026-07-09 ETH513 - Jul 9, 09:10 UTCJul 10, 02:55 UTC17h 45m
2026-07-09 ETH513 - Jul 9, 02:45 UTCJul 10, 02:15 UTC23h 30m
2026-07-08 ETH512 - Jul 8, 15:20 UTCJul 8, 23:10 UTC7h 50m
2026-07-07 ETH761 - Jul 7, 22:20 UTCJul 8, 22:15 UTC23h 55m
2026-07-07 ETH761 DME → ADD Jul 7, 20:20 UTCJul 8, 16:10 UTC19h 50m
2026-07-07 ETH761 DME → ADD Jul 7, 19:55 UTCJul 8, 16:10 UTC20h 15m
2026-07-07 ETH761 DME → ADD Jul 7, 02:20 UTCJul 7, 23:25 UTC21h 5m
2026-07-07 ETH761 DME → ADD Jul 7, 00:20 UTCJul 7, 23:25 UTC23h 5m
2026-07-06 ETH760 ADD → DME Jul 6, 23:30 UTCJul 7, 22:15 UTC22h 45m
2026-07-04 ETH761 DME → ADD Jul 4, 19:45 UTCJul 4, 23:15 UTC3h 30m
2026-07-04 ETH761 DME → ADD Jul 4, 02:20 UTCJul 4, 23:15 UTC20h 55m
2026-07-04 ETH761 DME → ADD Jul 4, 00:20 UTCJul 4, 23:15 UTC22h 55m
2026-07-03 ETH760 ADD → DME Jul 3, 23:35 UTCJul 4, 22:15 UTC22h 40m
2026-07-02 ETH906 DSS → BKO Jul 2, 19:10 UTCJul 2, 19:45 UTC35m
2026-07-01 ETH575 ORD → ADD Jul 1, 22:20 UTCJul 2, 17:05 UTC18h 45m
2026-07-01 ETH575 ORD → ADD Jul 1, 21:05 UTCJul 2, 17:05 UTC20h 0m
2026-07-01 ETH575 ORD → ADD Jul 1, 15:40 UTCJul 2, 01:45 UTC10h 5m
2026-07-01 ETH574 - Jul 1, 03:25 UTCJul 1, 13:30 UTC10h 5m
2026-06-30 ETH574 - Jun 30, 23:05 UTCJul 1, 01:25 UTC2h 20m
2026-06-30 ETH575 ORD → ADD Jun 30, 00:20 UTCJul 1, 00:15 UTC23h 56m
2026-06-29 ETH575 ORD → ADD Jun 29, 15:30 UTCJun 30, 01:50 UTC10h 20m
2026-06-29 ETH574 FCO → ORD Jun 29, 03:25 UTCJun 29, 12:34 UTC9h 10m
2026-06-28 ETH574 - Jun 28, 23:54 UTCJun 29, 01:39 UTC1h 45m
2026-06-26 ETH575 ORD → ADD Jun 26, 15:39 UTCJun 27, 01:49 UTC10h 10m
2026-06-26 ETH574 - Jun 26, 03:34 UTCJun 26, 12:55 UTC9h 20m
2026-06-25 ETH574 - Jun 25, 22:49 UTCJun 26, 01:34 UTC2h 45m
2026-06-22 ETH575 ORD → ADD Jun 22, 15:35 UTCJun 23, 02:04 UTC10h 30m
2026-06-22 ETH574 - Jun 22, 03:35 UTCJun 22, 12:59 UTC9h 25m
2026-06-21 ETH574 - Jun 21, 23:44 UTCJun 22, 01:40 UTC1h 55m
2026-06-20 ETH761 DME → ADD Jun 20, 20:45 UTCJun 20, 23:45 UTC3h 0m
2026-06-19 ETH760 ADD → DME Jun 19, 23:44 UTCJun 20, 22:14 UTC22h 30m
2026-06-18 ETH513 - Jun 18, 03:20 UTCJun 18, 10:25 UTC7h 5m
2026-06-17 ETH512 - Jun 17, 15:25 UTCJun 17, 23:40 UTC8h 15m
2026-06-17 ETH512 - Jun 17, 00:45 UTCJun 17, 23:40 UTC22h 55m
2026-06-16 ETH452 ADD → CAI Jun 16, 22:20 UTCJun 16, 22:40 UTC20m
2026-06-15 ETH575 ORD → ADD Jun 15, 16:19 UTCJun 16, 11:45 UTC19h 25m
2026-06-15 ETH575 ORD → ADD Jun 15, 15:50 UTCJun 16, 11:45 UTC19h 55m
2026-06-15 ETH574 - Jun 15, 03:19 UTCJun 15, 12:35 UTC9h 15m
2026-06-14 ETH574 - Jun 14, 08:35 UTCJun 15, 01:50 UTC17h 14m
2026-06-13 ETH680 - Jun 13, 08:45 UTCJun 14, 03:25 UTC18h 40m
2026-06-13 ETH515 LFW → ADD Jun 13, 02:20 UTCJun 14, 01:10 UTC22h 49m
2026-06-12 ETH514 LFW → JFK Jun 12, 17:10 UTCJun 12, 23:55 UTC6h 45m
2026-06-11 ETH761 DME → ADD Jun 11, 22:20 UTCJun 12, 17:20 UTC19h 0m

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

Mode-S 040049 frequently asked

What is Mode-S code 040049?
040049 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AOS.
Where is Mode-S 040049 registered?
Mode-S code 040049 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040049 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040049, octal 01000111, decimal 262,217.
What flights does 040049 operate?
Mode-S 040049 has broadcast 20 distinct callsigns, including ETH761, ETH760, ETH574, ETH575, ETH514.