Apparatus

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sensors Mode-S transponder

04004B

ICAO 24-bit transponder address · allocated to Ethiopia

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

Hex
04004B
Octal
01000113
Decimal
262,219
Country
ET
Tail
ET-AOU
Type
B788
No current signal · last broadcast 1d ago
Flights observed
124
Distinct callsigns
20
Country
ET
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 04004B.

Country allocation

The ICAO 24-bit address 04004B 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
ETH644 Ethiopian Airlines 10 2026-04-23
ETH645 Ethiopian Airlines 9 2026-04-23
ETH512 - 8 2026-06-20
UGD110 - 7 2026-07-12
ETH574 - 6 2026-06-25
ETH514 Ethiopian Airlines 6 2026-06-02
ETH513 - 6 2026-06-21
ETH515 Ethiopian Airlines 5 2026-06-03
UGD111 - 4 2026-07-12
ETH730 Ethiopian Airlines 4 2026-05-28
ETH725 - 4 2026-06-22
ETH724 - 4 2026-06-22
ETH519 - 4 2026-06-28
ETH518 - 4 2026-06-28
ETH714 Ethiopian Airlines 3 2026-05-30
ETH609 Ethiopian Airlines 3 2026-06-01
ETH575 Ethiopian Airlines 3 2026-06-25
ETH553 Ethiopian Airlines 3 2026-05-21
ETH516 - 3 2026-04-13
UGD700 - 2 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 UGD111 - Jul 12, 19:35 UTCJul 12, 21:25 UTC1h 50m
2026-07-12 UGD110 - Jul 12, 13:15 UTCJul 12, 15:40 UTC2h 25m
2026-07-10 UGD111 - Jul 10, 19:45 UTCJul 10, 21:35 UTC1h 50m
2026-07-10 UGD110 - Jul 10, 14:50 UTCJul 10, 17:10 UTC2h 20m
2026-07-09 UGD110 - Jul 9, 16:50 UTCJul 10, 16:45 UTC23h 55m
2026-07-08 UGD741 CPT → JNB Jul 8, 15:45 UTCJul 9, 09:00 UTC17h 15m
2026-07-07 UGD111 LGW → CPT Jul 7, 19:35 UTCJul 8, 10:55 UTC15h 20m
2026-07-07 UGD110 - Jul 7, 13:20 UTCJul 7, 15:35 UTC2h 15m
2026-07-05 UGD111 - Jul 5, 19:00 UTCJul 6, 09:05 UTC14h 5m
2026-07-04 UGD110 - Jul 4, 20:55 UTCJul 5, 15:40 UTC18h 45m
2026-07-03 UGD700 - Jul 3, 20:50 UTCJul 4, 15:10 UTC18h 20m
2026-07-03 UDG111 - Jul 3, 19:00 UTCJul 4, 15:10 UTC20h 10m
2026-07-03 UGD110 - Jul 3, 14:40 UTCJul 3, 16:45 UTC2h 5m
2026-07-02 UGD110 QRA → LGW Jul 2, 19:30 UTCJul 3, 16:45 UTC21h 15m
2026-07-02 UGD700 - Jul 2, 13:25 UTCJul 2, 14:10 UTC45m
2026-06-30 ETH858 JNB → ADD Jun 30, 21:00 UTCJun 30, 21:30 UTC30m
2026-06-30 ETH8406 - Jun 30, 06:30 UTCJun 30, 18:30 UTC12h 0m
2026-06-30 ETH8405 - Jun 30, 03:50 UTCJun 30, 04:25 UTC35m
2026-06-28 ETH519 - Jun 28, 15:05 UTCJun 29, 01:00 UTC9h 55m
2026-06-28 ETH518 FCO → ATL Jun 28, 02:44 UTCJun 28, 12:29 UTC9h 45m
2026-06-27 ETH518 - Jun 27, 22:40 UTCJun 28, 01:04 UTC2h 25m
2026-06-25 ETH575 ORD → ADD Jun 25, 15:54 UTCJun 26, 01:29 UTC9h 35m
2026-06-25 ETH574 - Jun 25, 03:20 UTCJun 25, 12:40 UTC9h 20m
2026-06-24 ETH574 - Jun 24, 07:44 UTCJun 25, 01:24 UTC17h 40m
2026-06-22 ETH725 - Jun 22, 20:24 UTCJun 22, 23:20 UTC2h 55m
2026-06-22 ETH725 CPH → VIE Jun 22, 17:44 UTCJun 22, 18:54 UTC1h 10m
2026-06-22 ETH724 VIE → CPH Jun 22, 05:24 UTCJun 22, 06:45 UTC1h 20m
2026-06-21 ETH724 - Jun 21, 09:15 UTCJun 22, 03:45 UTC18h 30m
2026-06-21 ETH513 - Jun 21, 02:50 UTCJun 22, 02:45 UTC23h 55m
2026-06-20 ETH512 - Jun 20, 15:44 UTCJun 20, 23:45 UTC8h 0m
2026-06-19 ETH519 ATL → ADD Jun 19, 21:19 UTCJun 20, 16:44 UTC19h 25m
2026-06-19 ETH519 ATL → ADD Jun 19, 16:49 UTCJun 20, 16:44 UTC23h 55m
2026-06-19 ETH519 ATL → ADD Jun 19, 14:59 UTCJun 20, 00:49 UTC9h 50m
2026-06-19 ETH518 ADD → DUB Jun 19, 02:35 UTCJun 19, 12:39 UTC10h 5m
2026-06-18 ETH518 ADD → DUB Jun 18, 23:05 UTCJun 19, 00:59 UTC1h 54m
2026-06-04 ETH641 BOM → ADD Jun 4, 05:45 UTCJun 4, 06:25 UTC40m
2026-06-03 ETH610 ADD → BOM Jun 3, 08:45 UTCJun 4, 02:30 UTC17h 45m
2026-06-03 ETH515 LFW → ADD Jun 3, 02:50 UTCJun 4, 02:30 UTC23h 40m
2026-06-03 ETH515 LFW → ADD Jun 3, 02:15 UTCJun 3, 09:45 UTC7h 30m
2026-06-02 ETH514 LFW → JFK Jun 2, 15:00 UTCJun 2, 23:25 UTC8h 25m
2026-06-01 ETH609 HKG → BKK Jun 1, 21:35 UTCJun 2, 15:55 UTC18h 20m
2026-06-01 ETH609 HKG → BKK Jun 1, 19:15 UTCJun 1, 19:25 UTC10m
2026-06-01 ETH609 HKG → BKK Jun 1, 16:10 UTCJun 1, 17:35 UTC1h 25m
2026-06-01 ETH608 BKK → HKG Jun 1, 06:45 UTCJun 1, 08:15 UTC1h 30m
2026-06-01 ETH608 BKK → HKG Jun 1, 01:45 UTCJun 1, 05:10 UTC3h 25m
2026-05-30 ETH715 ARN → ADD May 30, 20:15 UTCMay 31, 00:20 UTC4h 5m
2026-05-30 ETH715 ARN → ADD May 30, 17:55 UTCMay 30, 18:35 UTC40m
2026-05-30 ETH714 ADD → ARN May 30, 06:20 UTCMay 30, 07:00 UTC40m
2026-05-30 ETH714 ADD → ARN May 30, 00:30 UTCMay 30, 04:45 UTC4h 15m
2026-05-29 ETH714 ADD → ARN May 29, 07:40 UTCMay 30, 04:45 UTC21h 5m

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

Mode-S 04004B frequently asked

What is Mode-S code 04004B?
04004B is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AOU.
Where is Mode-S 04004B registered?
Mode-S code 04004B is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 04004B 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 04004B, octal 01000113, decimal 262,219.
What flights does 04004B operate?
Mode-S 04004B has broadcast 20 distinct callsigns, including ETH644, ETH645, ETH512, UGD110, ETH574.