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sensors Mode-S transponder

040142

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-AUQ · BOEING 787-9 Dreamliner

Hex
040142
Octal
01000502
Decimal
262,466
Country
ET
Tail
ET-AUQ
Type
B789
Broadcasting now · callsign ETH629 · 40,000 ft
Flights observed
205
Distinct callsigns
20
Country
ET
Last broadcast
30m ago

Current position

040142 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 040142 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
ETH628 - 14 2026-07-14
ETH645 Ethiopian Airlines 12 2026-05-29
ETH741 Ethiopian Airlines 11 2026-06-29
ETH740 - 11 2026-06-29
ETH644 Ethiopian Airlines 10 2026-05-29
ETH629 - 10 2026-07-14
ETH609 - 10 2026-06-17
ETH907 - 8 2026-06-18
ETH731 Ethiopian Airlines 8 2026-05-31
ETH638 Ethiopian Airlines 7 2026-05-07
ETH608 - 7 2026-06-17
ETH729 - 5 2026-07-10
ETH846 Ethiopian Airlines 4 2026-06-12
ETH844 Ethiopian Airlines 4 2026-05-25
ETH736 - 4 2026-07-03
ETH728 - 4 2026-07-10
ETH726 - 4 2026-06-15
ETH725 Ethiopian Airlines 4 2026-05-22
ETH724 Ethiopian Airlines 4 2026-05-22
ETH713 Ethiopian Airlines 4 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ETH629 - Jul 14, 13:50 UTCJul 14, 14:30 UTC40m
2026-07-14 ETH628 - Jul 14, 08:35 UTCJul 14, 10:20 UTC1h 45m
2026-07-14 ETH628 - Jul 14, 07:25 UTCJul 14, 07:35 UTC10m
2026-07-14 ETH628 - Jul 14, 02:15 UTCJul 14, 05:45 UTC3h 30m
2026-07-12 ETH715 - Jul 12, 20:15 UTCJul 13, 00:35 UTC4h 20m
2026-07-12 ETH715 OSL → ARN Jul 12, 18:05 UTCJul 12, 18:50 UTC45m
2026-07-12 ETH714 ARN → OSL Jul 12, 06:15 UTCJul 12, 07:01 UTC45m
2026-07-12 ETH714 - Jul 12, 00:15 UTCJul 12, 04:30 UTC4h 15m
2026-07-10 ETH729 - Jul 10, 21:20 UTCJul 10, 23:50 UTC2h 30m
2026-07-10 ETH729 - Jul 10, 18:25 UTCJul 10, 19:35 UTC1h 10m
2026-07-10 ETH729 - Jul 10, 17:55 UTCJul 10, 18:20 UTC25m
2026-07-10 ETH728 - Jul 10, 06:50 UTCJul 10, 08:55 UTC2h 5m
2026-07-09 ETH728 - Jul 9, 14:15 UTCJul 10, 04:15 UTC14h 0m
2026-07-08 ETH687 - Jul 8, 21:40 UTCJul 9, 10:40 UTC13h 0m
2026-07-08 ETH848 - Jul 8, 06:35 UTCJul 8, 20:00 UTC13h 25m
2026-07-07 ETH859 ADD → JNB Jul 7, 09:50 UTCJul 8, 01:40 UTC15h 50m
2026-07-06 ETH687 DEL → ADD Jul 6, 21:35 UTCJul 7, 09:50 UTC12h 15m
2026-07-06 ETH688 - Jul 6, 17:10 UTCJul 6, 19:45 UTC2h 35m
2026-07-05 ETH729 - Jul 5, 20:45 UTCJul 5, 23:05 UTC2h 20m
2026-07-05 ETH729 MAN → GVA Jul 5, 17:50 UTCJul 5, 19:20 UTC1h 30m
2026-07-05 ETH728 GVA → MAN Jul 5, 05:35 UTCJul 5, 07:10 UTC1h 35m
2026-07-05 ETH728 - Jul 5, 01:20 UTCJul 5, 04:10 UTC2h 50m
2026-07-03 ETH737 MXP → ADD Jul 3, 22:00 UTCJul 4, 00:45 UTC2h 45m
2026-07-03 ETH737 MXP → ADD Jul 3, 19:20 UTCJul 3, 19:55 UTC35m
2026-07-03 ETH736 MXP → ZRH Jul 3, 05:15 UTCJul 3, 05:50 UTC35m
2026-07-03 ETH736 - Jul 3, 01:15 UTCJul 3, 03:35 UTC2h 20m
2026-07-02 ETH736 - Jul 2, 06:35 UTCJul 3, 03:35 UTC21h 0m
2026-07-02 ETH736 - Jul 2, 04:55 UTCJul 3, 03:35 UTC22h 40m
2026-07-02 ETH686 - Jul 2, 00:20 UTCJul 2, 02:55 UTC2h 35m
2026-06-30 ETH906 DSS → BKO Jun 30, 19:05 UTCJun 30, 19:50 UTC45m
2026-06-29 ETH741 MAD → ADD Jun 29, 22:35 UTCJun 30, 17:00 UTC18h 25m
2026-06-29 ETH741 MAD → ADD Jun 29, 21:44 UTCJun 30, 17:00 UTC19h 15m
2026-06-29 ETH741 MAD → ADD Jun 29, 19:05 UTCJun 29, 19:54 UTC50m
2026-06-29 ETH740 - Jun 29, 06:05 UTCJun 29, 06:59 UTC55m
2026-06-29 ETH740 - Jun 29, 01:00 UTCJun 29, 04:30 UTC3h 30m
2026-06-28 ETH740 - Jun 28, 02:34 UTCJun 29, 02:30 UTC23h 55m
2026-06-28 ETH407 BEY → ADD Jun 28, 01:34 UTCJun 28, 02:34 UTC1h 0m
2026-06-27 ETH406 ADD → BEY Jun 27, 22:35 UTCJun 27, 23:39 UTC1h 5m
2026-06-26 ETH906 DSS → BKO Jun 26, 19:04 UTCJun 26, 19:39 UTC35m
2026-06-26 ETH909 - Jun 26, 16:24 UTCJun 26, 17:00 UTC35m
2026-06-25 ETH687 DEL → ADD Jun 25, 21:35 UTCJun 26, 17:00 UTC19h 25m
2026-06-25 ETH717 - Jun 25, 05:39 UTCJun 25, 19:59 UTC14h 20m
2026-06-25 ETH712 - Jun 25, 01:04 UTCJun 25, 03:29 UTC2h 25m
2026-06-23 ETH741 MAD → ADD Jun 23, 22:10 UTCJun 24, 01:39 UTC3h 30m
2026-06-23 ETH741 MAD → ADD Jun 23, 19:15 UTCJun 23, 20:04 UTC50m
2026-06-23 ETH740 - Jun 23, 05:24 UTCJun 23, 06:09 UTC45m
2026-06-22 ETH740 - Jun 22, 23:20 UTCJun 23, 03:29 UTC4h 10m
2026-06-21 ETH858 JNB → ADD Jun 21, 21:14 UTCJun 21, 21:34 UTC20m
2026-06-21 ETH849 - Jun 21, 00:55 UTCJun 21, 18:50 UTC17h 55m
2026-06-20 ETH713 FCO → ADD Jun 20, 22:35 UTCJun 21, 18:50 UTC20h 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-AUQ page for operator, model, and routing details .

Mode-S 040142 frequently asked

What is Mode-S code 040142?
040142 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AUQ.
Where is Mode-S 040142 registered?
Mode-S code 040142 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040142 broadcasting right now?
Yes. Mode-S 040142 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040142, octal 01000502, decimal 262,466.
What flights does 040142 operate?
Mode-S 040142 has broadcast 20 distinct callsigns, including ETH628, ETH645, ETH741, ETH740, ETH644.