sensors Mode-S transponder
4CACF1
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-MAZ · AIRBUS A-330-300
- Hex
- 4CACF1
- Octal
- 23126361
- Decimal
- 5,025,009
- Country
- IE
- Tail
- EI-MAZ
- Type
- A333
- Flights observed
- 123
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 4CACF1 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 |
|---|---|---|---|
| GTR1986 | - | 25 | 2026-05-24 |
| GTR1975 | - | 12 | 2026-05-24 |
| GTR1515 | - | 9 | 2026-05-04 |
| GTR1604 | - | 8 | 2026-05-04 |
| GTR1946 | - | 6 | 2026-04-23 |
| GTR1945 | - | 6 | 2026-04-22 |
| GTR1914 | - | 6 | 2026-04-25 |
| GTR1926 | - | 5 | 2026-04-28 |
| GTR1538 | - | 5 | 2026-04-29 |
| GTR1934 | - | 4 | 2026-04-15 |
| GTR1924 | - | 4 | 2026-05-12 |
| GTR1912 | - | 4 | 2026-05-25 |
| GTR1559 | - | 4 | 2026-04-24 |
| GTR1931 | - | 3 | 2026-05-26 |
| GTR1557 | - | 3 | 2026-04-17 |
| GTR1513 | - | 3 | 2026-05-25 |
| GTR1962 | - | 2 | 2026-04-19 |
| GTR1950 | - | 2 | 2026-05-30 |
| GTR1922 | - | 2 | 2026-05-26 |
| GTR1573 | - | 2 | 2026-04-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | GTR1950 | - | May 30, 01:05 UTC | May 30, 04:15 UTC | 3h 10m |
| 2026-05-29 | GTR1933 | TLV → ZAZ | May 29, 07:20 UTC | May 29, 11:35 UTC | 4h 15m |
| 2026-05-28 | GTR1932 | ZAZ → DWC | May 28, 22:40 UTC | May 29, 02:50 UTC | 4h 10m |
| 2026-05-26 | GTR1931 | TLV → ZAZ | May 26, 20:50 UTC | May 27, 11:55 UTC | 15h 6m |
| 2026-05-26 | GTR1922 | ZAZ → TLV | May 26, 14:05 UTC | May 26, 18:30 UTC | 4h 25m |
| 2026-05-25 | GTR1513 | TLV → ZAZ | May 25, 11:35 UTC | May 26, 04:00 UTC | 16h 24m |
| 2026-05-25 | GTR1912 | - | May 25, 04:45 UTC | May 25, 09:00 UTC | 4h 15m |
| 2026-05-24 | GTR1986 | - | May 24, 04:20 UTC | May 24, 23:46 UTC | 19h 26m |
| 2026-05-24 | GTR1986 | - | May 24, 02:20 UTC | May 24, 23:46 UTC | 21h 26m |
| 2026-05-24 | GTR1975 | - | May 24, 01:20 UTC | May 24, 23:46 UTC | 22h 26m |
| 2026-05-23 | GTR1975 | - | May 23, 15:10 UTC | May 24, 05:00 UTC | 13h 50m |
| 2026-05-23 | GTR1551 | TLV → ZAZ | May 23, 07:45 UTC | May 23, 12:05 UTC | 4h 20m |
| 2026-05-23 | GTR1950 | ZAZ → TLV | May 23, 01:20 UTC | May 23, 05:30 UTC | 4h 9m |
| 2026-05-21 | GTR1986 | - | May 21, 20:40 UTC | May 22, 01:45 UTC | 5h 5m |
| 2026-05-21 | GTR1986 | - | May 21, 04:20 UTC | May 22, 01:45 UTC | 21h 25m |
| 2026-05-21 | GTR1986 | - | May 21, 02:20 UTC | May 22, 01:45 UTC | 23h 25m |
| 2026-05-21 | GTR1986 | - | May 21, 01:30 UTC | May 22, 00:15 UTC | 22h 45m |
| 2026-05-20 | GTR1975 | - | May 20, 15:05 UTC | May 21, 04:45 UTC | 13h 40m |
| 2026-05-19 | GTR1931 | - | May 19, 20:05 UTC | May 20, 11:40 UTC | 15h 36m |
| 2026-05-19 | GTR1922 | - | May 19, 13:55 UTC | May 19, 17:50 UTC | 3h 55m |
| 2026-05-18 | GTR1513 | - | May 18, 08:20 UTC | May 19, 03:45 UTC | 19h 24m |
| 2026-05-18 | GTR1912 | - | May 18, 06:20 UTC | May 19, 03:45 UTC | 21h 24m |
| 2026-05-18 | GTR1912 | ZAZ → ZAZ | May 18, 04:40 UTC | May 19, 03:45 UTC | 23h 4m |
| 2026-05-17 | GTR1986 | - | May 17, 20:20 UTC | May 18, 01:50 UTC | 5h 30m |
| 2026-05-17 | GTR1986 | - | May 17, 04:20 UTC | May 18, 01:50 UTC | 21h 30m |
| 2026-05-17 | GTR1986 | - | May 17, 02:20 UTC | May 18, 01:50 UTC | 23h 30m |
| 2026-05-17 | GTR1986 | - | May 17, 01:35 UTC | May 18, 00:15 UTC | 22h 40m |
| 2026-05-16 | GTR1975 | - | May 16, 15:20 UTC | May 17, 04:35 UTC | 13h 15m |
| 2026-05-14 | GTR1986 | - | May 14, 20:35 UTC | May 15, 02:15 UTC | 5h 40m |
| 2026-05-14 | GTR1986 | - | May 14, 04:20 UTC | May 15, 02:15 UTC | 21h 55m |
| 2026-05-14 | GTR1986 | - | May 14, 02:20 UTC | May 15, 02:15 UTC | 23h 55m |
| 2026-05-14 | GTR1975 | - | May 14, 01:50 UTC | May 15, 00:15 UTC | 22h 25m |
| 2026-05-13 | GTR1975 | - | May 13, 15:30 UTC | May 14, 05:10 UTC | 13h 40m |
| 2026-05-13 | GTR1931 | - | May 13, 13:35 UTC | May 13, 13:40 UTC | 5m |
| 2026-05-12 | GTR1924 | - | May 12, 21:10 UTC | May 12, 23:40 UTC | 2h 30m |
| 2026-05-12 | GTR192A | - | May 12, 15:35 UTC | May 12, 19:20 UTC | 3h 45m |
| 2026-05-11 | GTR1513 | TBS → ZAZ | May 11, 13:55 UTC | May 12, 05:45 UTC | 15h 51m |
| 2026-05-11 | GTR1912 | - | May 11, 06:50 UTC | May 11, 11:10 UTC | 4h 20m |
| 2026-05-10 | GTR1986 | - | May 10, 22:55 UTC | May 11, 04:50 UTC | 5h 55m |
| 2026-05-10 | GTR1986 | - | May 10, 06:20 UTC | May 11, 04:50 UTC | 22h 30m |
| 2026-05-10 | GTR1986 | - | May 10, 04:19 UTC | May 11, 04:15 UTC | 23h 55m |
| 2026-05-10 | GTR1986 | - | May 10, 03:35 UTC | May 11, 02:15 UTC | 22h 40m |
| 2026-05-09 | GTR1975 | - | May 9, 17:05 UTC | May 10, 06:59 UTC | 13h 55m |
| 2026-05-08 | GTR1553 | - | May 8, 06:20 UTC | May 9, 01:55 UTC | 19h 35m |
| 2026-05-08 | GTR1556 | - | May 8, 04:34 UTC | May 9, 01:55 UTC | 21h 20m |
| 2026-05-07 | GTR1986 | - | May 7, 20:45 UTC | May 8, 02:19 UTC | 5h 35m |
| 2026-05-07 | GTR1986 | - | May 7, 04:20 UTC | May 8, 02:19 UTC | 22h 0m |
| 2026-05-07 | GTR1986 | - | May 7, 03:25 UTC | May 8, 02:14 UTC | 22h 50m |
| 2026-05-06 | GTR1975 | - | May 6, 15:05 UTC | May 7, 04:40 UTC | 13h 35m |
| 2026-05-05 | GTR1924 | TBS → ZAZ | May 5, 21:45 UTC | May 6, 02:55 UTC | 5h 10m |
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-MAZ page for operator, model, and routing details .