Apparatus

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sensors Mode-S transponder

040156

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-AVN · BOEING 777-200LR

Hex
040156
Octal
01000526
Decimal
262,486
Country
ET
Tail
ET-AVN
Type
B77L
No current signal · last broadcast 1d ago
Flights observed
188
Distinct callsigns
20
Country
ET
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 040156.

Country allocation

The ICAO 24-bit address 040156 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
ETH3518 - 11 2026-07-03
ETH3516 - 10 2026-07-02
ETH3605 - 8 2026-07-11
ETH3750 - 7 2026-07-12
ETH3702 Ethiopian Airlines 7 2026-05-20
ETH3657 - 7 2026-07-13
ETH3290 - 7 2026-06-17
ETH3712 - 6 2026-07-05
ETH3651 Ethiopian Airlines 6 2026-06-15
ETH3511 - 6 2026-06-22
ETH3751 Ethiopian Airlines 5 2026-06-03
ETH3672 - 5 2026-07-08
ETH3638 Ethiopian Airlines 5 2026-06-26
ETH3502 - 5 2026-06-22
ETH3714 - 4 2026-06-20
ETH3691 - 4 2026-06-13
ETH3690 - 4 2026-06-13
ETH3685 - 4 2026-07-09
ETH3604 - 4 2026-07-11
ETH3807 Ethiopian Airlines 3 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ETH3657 - Jul 13, 02:20 UTCJul 13, 05:55 UTC3h 35m
2026-07-12 ETH3750 - Jul 12, 09:45 UTCJul 12, 11:50 UTC2h 5m
2026-07-11 ETH3605 - Jul 11, 11:35 UTCJul 12, 06:35 UTC19h 0m
2026-07-11 ETH3604 - Jul 11, 09:35 UTCJul 12, 06:35 UTC21h 0m
2026-07-11 ETH3604 - Jul 11, 08:35 UTCJul 12, 06:35 UTC22h 0m
2026-07-10 ETH3605 - Jul 10, 12:55 UTCJul 11, 05:35 UTC16h 40m
2026-07-10 ETH3605 - Jul 10, 09:35 UTCJul 11, 05:35 UTC20h 0m
2026-07-10 ETH3604 - Jul 10, 07:35 UTCJul 11, 05:35 UTC22h 0m
2026-07-09 ETH3720 - Jul 9, 09:45 UTCJul 10, 05:20 UTC19h 35m
2026-07-09 ETH3685 - Jul 9, 07:55 UTCJul 9, 08:10 UTC15m
2026-07-09 ETH3673 ICN → HKG Jul 9, 02:25 UTCJul 9, 05:30 UTC3h 5m
2026-07-08 ETH3672 - Jul 8, 23:00 UTCJul 8, 23:20 UTC20m
2026-07-08 ETH3672 - Jul 8, 14:25 UTCJul 8, 16:35 UTC2h 10m
2026-07-08 ETH3672 MST → OSL Jul 8, 10:20 UTCJul 8, 11:55 UTC1h 35m
2026-07-07 ETH3400 - Jul 7, 18:50 UTCJul 8, 08:15 UTC13h 25m
2026-07-05 ETH3848 - Jul 5, 23:05 UTCJul 6, 10:10 UTC11h 5m
2026-07-05 ETH3715 - Jul 5, 10:55 UTCJul 5, 21:05 UTC10h 10m
2026-07-05 ETH3712 - Jul 5, 03:45 UTCJul 5, 08:10 UTC4h 25m
2026-07-03 ETH3657 - Jul 3, 23:40 UTCJul 4, 04:10 UTC4h 30m
2026-07-03 ETH3750 - Jul 3, 07:35 UTCJul 3, 09:30 UTC1h 55m
2026-07-03 ETH3518 - Jul 3, 00:40 UTCJul 3, 05:30 UTC4h 50m
2026-07-02 ETH3518 - Jul 2, 21:25 UTCJul 3, 00:35 UTC3h 10m
2026-07-02 ETH3518 - Jul 2, 18:15 UTCJul 2, 18:50 UTC35m
2026-07-02 ETH3516 - Jul 2, 09:40 UTCJul 2, 11:15 UTC1h 35m
2026-07-01 ETH3516 - Jul 1, 20:15 UTCJul 2, 06:55 UTC10h 40m
2026-06-30 ETH3725 - Jun 30, 23:35 UTCJul 1, 18:20 UTC18h 45m
2026-06-30 ETH3725 - Jun 30, 21:35 UTCJul 1, 18:20 UTC20h 45m
2026-06-30 ETH3229 - Jun 30, 19:55 UTCJul 1, 18:20 UTC22h 25m
2026-06-30 ETH3229 - Jun 30, 18:15 UTCJul 1, 17:30 UTC23h 15m
2026-06-30 ETH3753 - Jun 30, 03:20 UTCJun 30, 15:30 UTC12h 10m
2026-06-29 ETH3483 - Jun 29, 09:44 UTCJun 30, 00:25 UTC14h 40m
2026-06-29 ETH3568 LGG → WUH Jun 29, 00:20 UTCJun 29, 05:15 UTC4h 55m
2026-06-26 ETH3713 BRU → ADD Jun 26, 17:44 UTCJun 26, 18:15 UTC30m
2026-06-26 ETH3638 ADD → KUL Jun 26, 07:10 UTCJun 26, 14:09 UTC7h 0m
2026-06-25 ETH3518 - Jun 25, 19:54 UTCJun 26, 03:54 UTC8h 0m
2026-06-25 ETH3518 - Jun 25, 17:09 UTCJun 25, 17:44 UTC35m
2026-06-25 ETH3516 - Jun 25, 08:09 UTCJun 25, 09:45 UTC1h 35m
2026-06-24 ETH3516 - Jun 24, 18:39 UTCJun 25, 05:25 UTC10h 45m
2026-06-24 ETH3793 - Jun 24, 10:25 UTCJun 24, 12:44 UTC2h 20m
2026-06-24 ETH3793 - Jun 24, 01:34 UTCJun 24, 07:20 UTC5h 45m
2026-06-23 ETH3793 - Jun 23, 20:29 UTCJun 23, 20:49 UTC20m
2026-06-22 ETH3446 - Jun 22, 23:35 UTCJun 23, 17:54 UTC18h 20m
2026-06-22 ETH3511 - Jun 22, 21:05 UTCJun 23, 17:54 UTC20h 50m
2026-06-22 ETH3511 - Jun 22, 17:34 UTCJun 23, 17:30 UTC23h 55m
2026-06-22 ETH3511 - Jun 22, 15:35 UTCJun 23, 15:04 UTC23h 30m
2026-06-22 ETH3511 - Jun 22, 15:24 UTCJun 23, 12:25 UTC21h 0m
2026-06-22 ETH3502 - Jun 22, 02:59 UTCJun 22, 12:30 UTC9h 30m
2026-06-21 ETH3725 - Jun 21, 10:09 UTCJun 22, 01:10 UTC15h 0m
2026-06-20 ETH3714 - Jun 20, 12:19 UTCJun 21, 07:04 UTC18h 45m
2026-06-20 ETH3656 - Jun 20, 04:04 UTCJun 20, 07:34 UTC3h 30m

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

Mode-S 040156 frequently asked

What is Mode-S code 040156?
040156 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AVN.
Where is Mode-S 040156 registered?
Mode-S code 040156 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040156 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 040156, octal 01000526, decimal 262,486.
What flights does 040156 operate?
Mode-S 040156 has broadcast 20 distinct callsigns, including ETH3518, ETH3516, ETH3605, ETH3750, ETH3702.