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
- Flights observed
- 194
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- Jul 26, 20:15 UTC
Last known position
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 | Neos | 13 | 2026-07-26 |
| NOS431 | Neos | 8 | 2026-07-24 |
| NOS523 | - | 7 | 2026-07-04 |
| NOS787 | - | 6 | 2026-07-18 |
| NOS76TA | Neos | 6 | 2026-07-26 |
| NOS573 | Neos | 6 | 2026-05-01 |
| NOS430 | Neos | 6 | 2026-07-23 |
| NOS27XN | Neos | 6 | 2026-07-25 |
| NOS247 | - | 6 | 2026-07-21 |
| NOS153 | Neos | 6 | 2026-06-02 |
| NOS131 | Neos | 6 | 2026-06-16 |
| NOS789 | - | 5 | 2026-07-15 |
| NOS127 | - | 5 | 2026-04-14 |
| NOS522 | - | 4 | 2026-07-03 |
| 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
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | NOS76TA | FCO → VRN | Jul 26, 19:20 UTC | Jul 26, 20:15 UTC | 55m |
| 2026-07-26 | NOS611 | FCO → VRN | Jul 26, 11:50 UTC | Jul 26, 17:25 UTC | 5h 35m |
| 2026-07-25 | NOS610 | VRN → FCO | Jul 25, 21:50 UTC | Jul 26, 03:10 UTC | 5h 20m |
| 2026-07-25 | NOS27XN | MXP → FCO | Jul 25, 18:50 UTC | Jul 25, 19:40 UTC | 50m |
| 2026-07-25 | NOS23XD | RMF → MXP | Jul 25, 06:50 UTC | Jul 25, 16:20 UTC | 9h 30m |
| 2026-07-24 | NOS431 | CUN → FCO | Jul 24, 18:15 UTC | Jul 24, 19:20 UTC | 1h 5m |
| 2026-07-24 | NOS431 | CUN → FCO | Jul 24, 05:20 UTC | Jul 24, 15:45 UTC | 10h 25m |
| 2026-07-23 | NOS430 | MXP → FCO | Jul 23, 16:30 UTC | Jul 24, 02:35 UTC | 10h 5m |
| 2026-07-23 | NOS430 | MXP → FCO | Jul 23, 12:15 UTC | Jul 23, 13:00 UTC | 45m |
| 2026-07-21 | NOS247 | - | Jul 21, 19:50 UTC | Jul 22, 15:30 UTC | 19h 40m |
| 2026-07-21 | NOS247 | MXP → MXP | Jul 21, 19:15 UTC | Jul 22, 15:30 UTC | 20h 15m |
| 2026-07-19 | NOS8785 | PMO → MXP | Jul 19, 23:40 UTC | Jul 20, 00:45 UTC | 1h 5m |
| 2026-07-19 | NOS785 | JFK → PMO | Jul 19, 13:50 UTC | Jul 19, 21:40 UTC | 7h 50m |
| 2026-07-18 | NOS787 | MXP → JFK | Jul 18, 11:20 UTC | Jul 18, 19:25 UTC | 8h 5m |
| 2026-07-18 | NOS5421 | DSS → MXP | Jul 18, 02:55 UTC | Jul 18, 07:40 UTC | 4h 45m |
| 2026-07-17 | NOS5420 | MXP → DSS | Jul 17, 19:49 UTC | Jul 18, 00:50 UTC | 5h 0m |
| 2026-07-15 | NOS789 | JFK → MXP | Jul 15, 22:55 UTC | Jul 16, 06:05 UTC | 7h 10m |
| 2026-07-15 | NOS786 | - | Jul 15, 09:55 UTC | Jul 15, 18:50 UTC | 8h 55m |
| 2026-07-14 | NOS785 | - | Jul 14, 21:25 UTC | Jul 15, 05:15 UTC | 7h 49m |
| 2026-07-14 | NOS787 | MXP → JFK | Jul 14, 10:55 UTC | Jul 14, 18:35 UTC | 7h 40m |
| 2026-07-12 | NOS76TA | FCO → VRN | Jul 12, 17:40 UTC | Jul 12, 18:30 UTC | 50m |
| 2026-07-11 | NOS611 | - | Jul 11, 21:50 UTC | Jul 12, 16:10 UTC | 18h 20m |
| 2026-07-11 | NOS611 | FCO → FCO | Jul 11, 20:35 UTC | Jul 12, 16:10 UTC | 19h 35m |
| 2026-07-11 | NOS27XN | MXP → FCO | Jul 11, 17:45 UTC | Jul 11, 18:35 UTC | 50m |
| 2026-07-11 | NOS6211 | CAG → MXP | Jul 11, 14:25 UTC | Jul 11, 15:40 UTC | 1h 15m |
| 2026-07-11 | NOS94JV | MXP → CAG | Jul 11, 11:40 UTC | Jul 11, 12:50 UTC | 1h 10m |
| 2026-07-11 | NOS5421 | DSS → MXP | Jul 11, 02:40 UTC | Jul 11, 07:30 UTC | 4h 50m |
| 2026-07-10 | NOS5420 | MXP → DSS | Jul 10, 19:00 UTC | Jul 11, 00:05 UTC | 5h 6m |
| 2026-07-10 | NOS857 | - | Jul 10, 12:35 UTC | Jul 10, 13:35 UTC | 1h 0m |
| 2026-07-09 | NOS457 | - | Jul 9, 19:20 UTC | Jul 10, 10:30 UTC | 15h 10m |
| 2026-07-09 | NOS457 | - | Jul 9, 09:50 UTC | Jul 10, 09:45 UTC | 23h 55m |
| 2026-07-09 | NOS456 | - | Jul 9, 07:55 UTC | Jul 10, 07:45 UTC | 23h 50m |
| 2026-07-09 | NOS856 | MXP → FCO | Jul 9, 03:45 UTC | Jul 9, 04:35 UTC | 50m |
| 2026-07-07 | NOS292 | - | Jul 7, 19:50 UTC | Jul 8, 15:15 UTC | 19h 25m |
| 2026-07-07 | NOS292 | MXP → MXP | Jul 7, 18:45 UTC | Jul 8, 15:15 UTC | 20h 30m |
| 2026-07-06 | NOS861 | - | Jul 6, 20:25 UTC | Jul 6, 21:45 UTC | 1h 20m |
| 2026-07-05 | NOS761 | NOS → WAW | Jul 5, 23:50 UTC | Jul 6, 18:50 UTC | 19h 0m |
| 2026-07-05 | NOS761 | NOS → WAW | Jul 5, 23:40 UTC | Jul 6, 18:50 UTC | 19h 10m |
| 2026-07-05 | NOS860 | - | Jul 5, 19:30 UTC | Jul 5, 21:10 UTC | 1h 40m |
| 2026-07-05 | NOS614 | - | Jul 5, 15:35 UTC | Jul 5, 16:20 UTC | 45m |
| 2026-07-05 | NOS614 | - | Jul 5, 00:35 UTC | Jul 5, 14:25 UTC | 13h 50m |
| 2026-07-04 | NOS613 | - | Jul 4, 22:40 UTC | Jul 4, 23:45 UTC | 1h 5m |
| 2026-07-04 | NOS613 | - | Jul 4, 18:35 UTC | Jul 4, 19:30 UTC | 55m |
| 2026-07-04 | NOS523 | - | Jul 4, 10:10 UTC | Jul 4, 10:50 UTC | 40m |
| 2026-07-03 | NOS523 | - | Jul 3, 11:50 UTC | Jul 4, 07:45 UTC | 19h 55m |
| 2026-07-03 | NOS522 | - | Jul 3, 11:15 UTC | Jul 4, 07:45 UTC | 20h 30m |
| 2026-07-01 | EVE102P | MAD → KAO | Jul 1, 12:45 UTC | Jul 1, 14:50 UTC | 2h 5m |
| 2026-06-30 | EVE801 | - | Jun 30, 15:25 UTC | Jul 1, 09:50 UTC | 18h 25m |
| 2026-06-27 | EVE801 | - | Jun 27, 16:20 UTC | Jun 28, 10:00 UTC | 17h 40m |
| 2026-06-23 | EVE802 | - | Jun 23, 15:24 UTC | Jun 24, 09:29 UTC | 18h 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 EI-NUA page for operator, model, and routing details .