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sensors Mode-S transponder

4CAA15

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-MGL · BOEING 787-9 Dreamliner

Hex
4CAA15
Octal
23125025
Decimal
5,024,277
Country
IE
Tail
EI-MGL
Type
B789
Broadcasting now · callsign MGL137 · 40,000 ft
Flights observed
142
Distinct callsigns
11
Country
IE
Last broadcast
5m ago

Current position

4CAA15 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAA15 falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland 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 11 distinct

Callsign Airline Flights Last seen
MGL502 - 23 2026-07-07
MGL302 - 22 2026-07-13
MGL301 - 22 2026-07-13
MGL137 - 19 2026-07-11
MGL501 - 18 2026-06-29
MGL138 MIAT Mongolian Airlines 13 2026-07-12
MGL307 - 9 2026-07-13
MGL309 - 6 2026-07-11
MGL308 - 6 2026-07-13
MGL310 MIAT Mongolian Airlines 3 2026-06-26
MGL7307 - 1 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 MGL308 - Jul 13, 15:10 UTCJul 14, 07:15 UTC16h 5m
2026-07-13 MGL307 - Jul 13, 12:45 UTCJul 13, 13:10 UTC25m
2026-07-13 MGL302 - Jul 13, 05:55 UTCJul 13, 07:25 UTC1h 30m
2026-07-13 MGL301 - Jul 13, 03:15 UTCJul 13, 03:40 UTC25m
2026-07-12 MGL138 FRA → UBN Jul 12, 12:50 UTCJul 12, 18:50 UTC6h 0m
2026-07-11 MGL137 ICN → FRA Jul 11, 17:40 UTCJul 12, 10:25 UTC16h 45m
2026-07-11 MGL309 - Jul 11, 15:45 UTCJul 11, 16:10 UTC25m
2026-07-11 MGL302 - Jul 11, 05:45 UTCJul 11, 07:10 UTC1h 25m
2026-07-11 MGL301 - Jul 11, 03:15 UTCJul 11, 03:45 UTC30m
2026-07-10 MGL138 FRA → UBN Jul 10, 12:50 UTCJul 11, 02:25 UTC13h 35m
2026-07-09 MGL137 ICN → FRA Jul 9, 17:05 UTCJul 10, 10:45 UTC17h 40m
2026-07-09 MGL309 UBN → ICN Jul 9, 15:05 UTCJul 9, 15:25 UTC20m
2026-07-09 MGL302 - Jul 9, 05:50 UTCJul 9, 07:35 UTC1h 45m
2026-07-09 MGL301 - Jul 9, 03:55 UTCJul 9, 04:20 UTC25m
2026-07-08 MGL138 FRA → UBN Jul 8, 12:35 UTCJul 8, 18:40 UTC6h 5m
2026-07-07 MGL137 ICN → FRA Jul 7, 17:05 UTCJul 8, 10:20 UTC17h 15m
2026-07-07 MGL309 UBN → ICN Jul 7, 15:05 UTCJul 7, 15:25 UTC20m
2026-07-07 MGL502 - Jul 7, 06:15 UTCJul 7, 09:35 UTC3h 20m
2026-07-06 MGL138 FRA → UBN Jul 6, 13:20 UTCJul 7, 04:20 UTC15h 0m
2026-07-05 MGL137 - Jul 5, 15:20 UTCJul 6, 10:40 UTC19h 20m
2026-07-05 MGL137 ICN → FRA Jul 5, 15:05 UTCJul 6, 10:40 UTC19h 35m
2026-07-05 MGL307 - Jul 5, 12:50 UTCJul 5, 13:10 UTC20m
2026-07-05 MGL302 - Jul 5, 05:55 UTCJul 5, 07:30 UTC1h 35m
2026-07-05 MGL301 - Jul 5, 03:25 UTCJul 5, 03:45 UTC20m
2026-07-04 MGL138 FRA → UBN Jul 4, 13:00 UTCJul 4, 18:55 UTC5h 55m
2026-07-03 MGL137 ICN → FRA Jul 3, 15:25 UTCJul 4, 10:30 UTC19h 5m
2026-07-03 MGL307 - Jul 3, 13:05 UTCJul 3, 13:30 UTC25m
2026-07-03 MGL302 - Jul 3, 05:50 UTCJul 3, 12:20 UTC6h 30m
2026-07-03 MGL301 - Jul 3, 03:05 UTCJul 3, 03:25 UTC20m
2026-07-02 MGL138 FRA → UBN Jul 2, 12:55 UTCJul 2, 18:45 UTC5h 50m
2026-07-01 MGL137 - Jul 1, 15:20 UTCJul 2, 10:40 UTC19h 20m
2026-07-01 MGL307 - Jul 1, 12:50 UTCJul 1, 13:10 UTC20m
2026-07-01 MGL302 - Jul 1, 05:45 UTCJul 1, 07:20 UTC1h 35m
2026-07-01 MGL301 - Jul 1, 03:10 UTCJul 1, 03:30 UTC20m
2026-06-30 MGL502 - Jun 30, 06:25 UTCJun 30, 09:45 UTC3h 20m
2026-06-29 MGL501 ICN → NRT Jun 29, 15:30 UTCJun 30, 04:10 UTC12h 41m
2026-06-29 MGL307 - Jun 29, 12:29 UTCJun 29, 13:00 UTC30m
2026-06-29 MGL302 - Jun 29, 05:24 UTCJun 29, 06:54 UTC1h 30m
2026-06-29 MGL301 - Jun 29, 03:05 UTCJun 29, 03:25 UTC20m
2026-06-28 MGL302 - Jun 28, 05:34 UTCJun 28, 06:59 UTC1h 25m
2026-06-28 MGL301 - Jun 28, 03:19 UTCJun 28, 03:59 UTC40m
2026-06-27 MGL308 - Jun 27, 15:24 UTCJun 27, 16:55 UTC1h 30m
2026-06-27 MGL307 - Jun 27, 12:39 UTCJun 27, 13:04 UTC25m
2026-06-27 MGL302 - Jun 27, 05:44 UTCJun 27, 07:04 UTC1h 20m
2026-06-27 MGL301 - Jun 27, 03:09 UTCJun 27, 03:40 UTC30m
2026-06-26 MGL310 ICN → UBN Jun 26, 17:09 UTCJun 26, 18:34 UTC1h 25m
2026-06-26 MGL309 UBN → ICN Jun 26, 07:00 UTCJun 26, 15:34 UTC8h 35m
2026-06-26 MGL302 - Jun 26, 05:50 UTCJun 26, 06:04 UTC15m
2026-06-26 MGL301 - Jun 26, 03:15 UTCJun 26, 03:39 UTC25m
2026-06-25 MGL310 ICN → UBN Jun 25, 16:59 UTCJun 25, 18:34 UTC1h 35m

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 EI-MGL page for operator, model, and routing details .

Mode-S 4CAA15 frequently asked

What is Mode-S code 4CAA15?
4CAA15 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-MGL.
Where is Mode-S 4CAA15 registered?
Mode-S code 4CAA15 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAA15 broadcasting right now?
Yes. Mode-S 4CAA15 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAA15, octal 23125025, decimal 5,024,277.
What flights does 4CAA15 operate?
Mode-S 4CAA15 has broadcast 11 distinct callsigns, including MGL502, MGL302, MGL301, MGL137, MGL501.