sensors Mode-S transponder
4CADC9
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-HJR · AIRBUS A-330-900
- Hex
- 4CADC9
- Octal
- 23126711
- Decimal
- 5,025,225
- Country
- IE
- Tail
- EI-HJR
- Type
- A339
- Flights observed
- 104
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address 4CADC9 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 |
|---|---|---|---|
| ITY620 | ITA Airways | 12 | 2026-04-17 |
| ITY621 | ITA Airways | 11 | 2026-04-18 |
| ITY608 | ITA Airways | 10 | 2026-05-19 |
| ITY609 | ITA Airways | 9 | 2026-05-19 |
| ITY759 | ITA Airways | 7 | 2026-04-13 |
| ITY615 | ITA Airways | 5 | 2026-05-14 |
| ITY603 | ITA Airways | 5 | 2026-05-20 |
| ITY602 | ITA Airways | 5 | 2026-05-20 |
| ITY769 | ITA Airways | 4 | 2026-04-16 |
| ITY614 | ITA Airways | 4 | 2026-05-14 |
| ITY770 | ITA Airways | 3 | 2026-04-15 |
| ITY673 | ITA Airways | 3 | 2026-05-23 |
| ITY672 | ITA Airways | 3 | 2026-05-22 |
| ITY651 | ITA Airways | 3 | 2026-05-07 |
| ITY650 | ITA Airways | 3 | 2026-05-07 |
| ITY675 | ITA Airways | 2 | 2026-05-17 |
| ITY674 | ITA Airways | 2 | 2026-05-16 |
| ITY758 | - | 1 | 2026-04-12 |
| ITY6MO | ITA Airways | 1 | 2026-05-22 |
| ITY6KC | ITA Airways | 1 | 2026-05-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-27 | ITY683 | EZE → FCO | May 27, 04:34 UTC | May 27, 17:10 UTC | 12h 36m |
| 2026-05-26 | ITY682 | FCO → EZE | May 26, 12:24 UTC | May 27, 02:14 UTC | 13h 50m |
| 2026-05-26 | ITY6KC | JFK → FCO | May 26, 01:44 UTC | May 26, 09:49 UTC | 8h 5m |
| 2026-05-25 | ITY610 | FCO → JFK | May 25, 13:50 UTC | May 25, 22:34 UTC | 8h 44m |
| 2026-05-24 | ITY679 | GRU → FCO | May 24, 23:00 UTC | May 25, 09:10 UTC | 10h 10m |
| 2026-05-24 | ITY678 | FCO → GRU | May 24, 08:25 UTC | May 24, 19:55 UTC | 11h 30m |
| 2026-05-23 | ITY673 | GIG → FCO | May 23, 17:30 UTC | May 24, 03:55 UTC | 10h 25m |
| 2026-05-22 | ITY672 | FCO → GIG | May 22, 20:50 UTC | May 23, 07:50 UTC | 10h 59m |
| 2026-05-22 | ITY6MO | MIA → FCO | May 22, 00:05 UTC | May 22, 09:40 UTC | 9h 35m |
| 2026-05-21 | ITY630 | FCO → MIA | May 21, 09:25 UTC | May 21, 20:00 UTC | 10h 35m |
| 2026-05-20 | ITY603 | JFK → FCO | May 20, 22:30 UTC | May 21, 06:15 UTC | 7h 45m |
| 2026-05-20 | ITY602 | FCO → JFK | May 20, 07:55 UTC | May 20, 16:50 UTC | 8h 55m |
| 2026-05-19 | ITY609 | JFK → FCO | May 19, 21:00 UTC | May 20, 04:40 UTC | 7h 41m |
| 2026-05-19 | ITY608 | FCO → JFK | May 19, 08:35 UTC | May 19, 17:25 UTC | 8h 50m |
| 2026-05-18 | ITY603 | JFK → FCO | May 18, 22:15 UTC | May 19, 05:55 UTC | 7h 40m |
| 2026-05-18 | ITY602 | FCO → JFK | May 18, 07:55 UTC | May 18, 16:30 UTC | 8h 35m |
| 2026-05-17 | ITY675 | GRU → FCO | May 17, 17:45 UTC | May 18, 04:20 UTC | 10h 35m |
| 2026-05-16 | ITY674 | FCO → GRU | May 16, 20:40 UTC | May 17, 08:40 UTC | 12h 0m |
| 2026-05-15 | ITY641 | SFO → FCO | May 15, 23:20 UTC | May 16, 10:35 UTC | 11h 16m |
| 2026-05-15 | ITY640 | FCO → SFO | May 15, 07:40 UTC | May 15, 20:10 UTC | 12h 29m |
| 2026-05-14 | ITY615 | BOS → FCO | May 14, 21:35 UTC | May 15, 05:00 UTC | 7h 25m |
| 2026-05-14 | ITY614 | FCO → BOS | May 14, 09:00 UTC | May 14, 17:45 UTC | 8h 45m |
| 2026-05-13 | ITY603 | JFK → FCO | May 13, 22:45 UTC | May 14, 06:30 UTC | 7h 45m |
| 2026-05-13 | ITY602 | FCO → JFK | May 13, 08:00 UTC | May 13, 16:55 UTC | 8h 55m |
| 2026-05-12 | ITY673 | GIG → FCO | May 12, 17:45 UTC | May 13, 03:50 UTC | 10h 5m |
| 2026-05-11 | ITY672 | FCO → GIG | May 11, 20:50 UTC | May 12, 08:30 UTC | 11h 40m |
| 2026-05-10 | ITY619 | IAD → FCO | May 10, 20:54 UTC | May 11, 05:20 UTC | 8h 25m |
| 2026-05-10 | ITY618 | FCO → IAD | May 10, 09:15 UTC | May 10, 18:29 UTC | 9h 15m |
| 2026-05-09 | ITY603 | JFK → FCO | May 9, 22:05 UTC | May 10, 06:15 UTC | 8h 10m |
| 2026-05-09 | ITY602 | FCO → JFK | May 9, 07:55 UTC | May 9, 16:40 UTC | 8h 45m |
| 2026-05-08 | ITY609 | JFK → FCO | May 8, 20:45 UTC | May 9, 04:50 UTC | 8h 5m |
| 2026-05-08 | ITY608 | FCO → JFK | May 8, 08:44 UTC | May 8, 17:35 UTC | 8h 50m |
| 2026-05-07 | ITY651 | YYZ → FCO | May 7, 21:15 UTC | May 8, 05:24 UTC | 8h 10m |
| 2026-05-07 | ITY650 | FCO → YYZ | May 7, 08:50 UTC | May 7, 17:55 UTC | 9h 5m |
| 2026-05-05 | ITY675 | GRU → FCO | May 5, 17:35 UTC | May 6, 03:45 UTC | 10h 10m |
| 2026-05-04 | ITY674 | FCO → GRU | May 4, 20:35 UTC | May 5, 08:40 UTC | 12h 5m |
| 2026-04-30 | ITY615 | BOS → FCO | Apr 30, 02:35 UTC | Apr 30, 05:15 UTC | 2h 40m |
| 2026-04-29 | ITY615 | BOS → FCO | Apr 29, 21:25 UTC | Apr 29, 22:35 UTC | 1h 10m |
| 2026-04-29 | ITY614 | FCO → BOS | Apr 29, 08:55 UTC | Apr 29, 17:05 UTC | 8h 11m |
| 2026-04-28 | ITY603 | JFK → FCO | Apr 28, 22:10 UTC | Apr 29, 06:19 UTC | 8h 10m |
| 2026-04-28 | ITY602 | FCO → JFK | Apr 28, 08:20 UTC | Apr 28, 17:00 UTC | 8h 40m |
| 2026-04-27 | ITY615 | BOS → FCO | Apr 27, 21:30 UTC | Apr 28, 05:15 UTC | 7h 45m |
| 2026-04-27 | ITY614 | FCO → BOS | Apr 27, 09:00 UTC | Apr 27, 17:05 UTC | 8h 5m |
| 2026-04-26 | ITY651 | YYZ → FCO | Apr 26, 21:15 UTC | Apr 27, 05:35 UTC | 8h 20m |
| 2026-04-26 | ITY650 | FCO → YYZ | Apr 26, 09:00 UTC | Apr 26, 17:35 UTC | 8h 35m |
| 2026-04-24 | ITY609 | JFK → FCO | Apr 24, 20:25 UTC | Apr 25, 04:20 UTC | 7h 55m |
| 2026-04-24 | ITY608 | FCO → JFK | Apr 24, 08:40 UTC | Apr 24, 16:55 UTC | 8h 15m |
| 2026-04-23 | ITY609 | JFK → FCO | Apr 23, 20:45 UTC | Apr 24, 04:55 UTC | 8h 10m |
| 2026-04-23 | ITY608 | FCO → JFK | Apr 23, 09:15 UTC | Apr 23, 17:35 UTC | 8h 20m |
| 2026-04-22 | ITY615 | BOS → FCO | Apr 22, 21:55 UTC | Apr 23, 05:40 UTC | 7h 46m |
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-HJR page for operator, model, and routing details .