Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CA9E7

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CA9E7
Octal
23124747
Decimal
5,024,231
Country
IE
Tail
EI-NUA
Type
B789
No current signal · last broadcast 1h ago
Flights observed
176
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CA9E7.

Country allocation

The ICAO 24-bit address 4CA9E7 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 20 distinct

Callsign Airline Flights Last seen
NOS611 - 12 2026-07-11
NOS523 - 7 2026-07-04
NOS573 Neos 6 2026-05-01
NOS431 Neos 6 2026-06-12
NOS153 Neos 6 2026-06-02
NOS131 Neos 6 2026-06-16
NOS787 - 5 2026-07-14
NOS76TA Neos 5 2026-07-12
NOS27XN Neos 5 2026-07-11
NOS127 - 5 2026-04-14
NOS789 Neos 4 2026-05-18
NOS522 - 4 2026-07-03
NOS430 Neos 4 2026-06-11
NOS247 - 4 2026-06-16
NOS130 Neos 4 2026-06-15
NOS126 Neos 4 2026-04-13
NOS947 - 3 2026-04-17
NOS946 - 3 2026-04-16
NOS852 - 3 2026-05-27
NOS631 Neos 3 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 NOS785 - Jul 14, 21:25 UTCJul 14, 23:00 UTC1h 34m
2026-07-14 NOS787 MXP → JFK Jul 14, 10:55 UTCJul 14, 18:35 UTC7h 40m
2026-07-12 NOS76TA FCO → VRN Jul 12, 17:40 UTCJul 12, 18:30 UTC50m
2026-07-11 NOS611 - Jul 11, 21:50 UTCJul 12, 16:10 UTC18h 20m
2026-07-11 NOS611 FCO → FCO Jul 11, 20:35 UTCJul 12, 16:10 UTC19h 35m
2026-07-11 NOS27XN MXP → FCO Jul 11, 17:45 UTCJul 11, 18:35 UTC50m
2026-07-11 NOS6211 CAG → MXP Jul 11, 14:25 UTCJul 11, 15:40 UTC1h 15m
2026-07-11 NOS94JV MXP → CAG Jul 11, 11:40 UTCJul 11, 12:50 UTC1h 10m
2026-07-11 NOS5421 DSS → MXP Jul 11, 02:40 UTCJul 11, 07:30 UTC4h 50m
2026-07-10 NOS5420 MXP → DSS Jul 10, 19:00 UTCJul 11, 00:05 UTC5h 6m
2026-07-10 NOS857 - Jul 10, 12:35 UTCJul 10, 13:35 UTC1h 0m
2026-07-09 NOS457 - Jul 9, 19:20 UTCJul 10, 10:30 UTC15h 10m
2026-07-09 NOS457 - Jul 9, 09:50 UTCJul 10, 09:45 UTC23h 55m
2026-07-09 NOS456 - Jul 9, 07:55 UTCJul 10, 07:45 UTC23h 50m
2026-07-09 NOS856 MXP → FCO Jul 9, 03:45 UTCJul 9, 04:35 UTC50m
2026-07-07 NOS292 - Jul 7, 19:50 UTCJul 8, 15:15 UTC19h 25m
2026-07-07 NOS292 MXP → MXP Jul 7, 18:45 UTCJul 8, 15:15 UTC20h 30m
2026-07-06 NOS861 - Jul 6, 20:25 UTCJul 6, 21:45 UTC1h 20m
2026-07-05 NOS761 NOS → WAW Jul 5, 23:50 UTCJul 6, 18:50 UTC19h 0m
2026-07-05 NOS761 NOS → WAW Jul 5, 23:40 UTCJul 6, 18:50 UTC19h 10m
2026-07-05 NOS860 - Jul 5, 19:30 UTCJul 5, 21:10 UTC1h 40m
2026-07-05 NOS614 - Jul 5, 15:35 UTCJul 5, 16:20 UTC45m
2026-07-05 NOS614 - Jul 5, 00:35 UTCJul 5, 14:25 UTC13h 50m
2026-07-04 NOS613 - Jul 4, 22:40 UTCJul 4, 23:45 UTC1h 5m
2026-07-04 NOS613 - Jul 4, 18:35 UTCJul 4, 19:30 UTC55m
2026-07-04 NOS523 - Jul 4, 10:10 UTCJul 4, 10:50 UTC40m
2026-07-03 NOS523 - Jul 3, 11:50 UTCJul 4, 07:45 UTC19h 55m
2026-07-03 NOS522 - Jul 3, 11:15 UTCJul 4, 07:45 UTC20h 30m
2026-07-01 EVE102P MAD → KAO Jul 1, 12:45 UTCJul 1, 14:50 UTC2h 5m
2026-06-30 EVE801 - Jun 30, 15:25 UTCJul 1, 09:50 UTC18h 25m
2026-06-27 EVE801 - Jun 27, 16:20 UTCJun 28, 10:00 UTC17h 40m
2026-06-23 EVE802 - Jun 23, 15:24 UTCJun 24, 09:29 UTC18h 5m
2026-06-21 EVE802 - Jun 21, 03:19 UTCJun 21, 10:29 UTC7h 10m
2026-06-20 EVE801 - Jun 20, 16:19 UTCJun 20, 23:29 UTC7h 10m
2026-06-20 EVE101P MXP → MAD Jun 20, 11:54 UTCJun 20, 13:39 UTC1h 45m
2026-06-20 NOS6211 CAG → MXP Jun 20, 07:29 UTCJun 20, 08:39 UTC1h 10m
2026-06-20 NOS94JV MXP → CAG Jun 20, 04:44 UTCJun 20, 05:39 UTC55m
2026-06-19 NOS43LK HAM → MXP Jun 19, 13:50 UTCJun 19, 15:19 UTC1h 30m
2026-06-19 NOS564 MXP → HAM Jun 19, 08:54 UTCJun 19, 10:19 UTC1h 25m
2026-06-16 NOS247 - Jun 16, 21:50 UTCJun 17, 16:35 UTC18h 45m
2026-06-16 NOS247 MXP → MXP Jun 16, 20:15 UTCJun 17, 16:35 UTC20h 20m
2026-06-16 NOS131 HAV → LRM Jun 16, 16:50 UTCJun 16, 17:40 UTC50m
2026-06-15 NOS131 HAV → LRM Jun 15, 22:25 UTCJun 16, 14:55 UTC16h 30m
2026-06-15 NOS131 HAV → LRM Jun 15, 19:30 UTCJun 16, 14:55 UTC19h 25m
2026-06-15 NOS130 HOG → MXP Jun 15, 11:49 UTCJun 16, 06:35 UTC18h 45m
2026-06-15 NOS130 HOG → MXP Jun 15, 10:50 UTCJun 16, 06:35 UTC19h 45m
2026-06-15 NOS50SQ - Jun 15, 07:35 UTCJun 15, 08:29 UTC55m
2026-06-14 NOS76TA FCO → VRN Jun 14, 17:45 UTCJun 14, 18:35 UTC50m
2026-06-13 NOS611 FCO → VRN Jun 13, 21:50 UTCJun 14, 16:05 UTC18h 15m
2026-06-13 NOS611 FCO → VRN Jun 13, 20:35 UTCJun 14, 16:05 UTC19h 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 EI-NUA page for operator, model, and routing details .

Mode-S 4CA9E7 frequently asked

What is Mode-S code 4CA9E7?
4CA9E7 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-NUA.
Where is Mode-S 4CA9E7 registered?
Mode-S code 4CA9E7 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA9E7 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA9E7, octal 23124747, decimal 5,024,231.
What flights does 4CA9E7 operate?
Mode-S 4CA9E7 has broadcast 20 distinct callsigns, including NOS611, NOS523, NOS573, NOS431, NOS153.