sensors Mode-S transponder
04019A
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-AYD · BOEING 787-9 Dreamliner
- Hex
- 04019A
- Octal
- 01000632
- Decimal
- 262,554
- Country
- ET
- Tail
- ET-AYD
- Type
- B789
- Flights observed
- 97
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 15h ago
Last known position
Country allocation
The ICAO 24-bit address 04019A falls within the block assigned to Ethiopia (ET) by ICAO Annex 10, Volume III. Every aircraft registered in Ethiopia 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 |
|---|---|---|---|
| ETH629 | Ethiopian Airlines | 11 | 2026-05-19 |
| ETH628 | Ethiopian Airlines | 11 | 2026-05-19 |
| ETH552 | Ethiopian Airlines | 10 | 2026-05-28 |
| ETH553 | Ethiopian Airlines | 6 | 2026-05-28 |
| ETH741 | Ethiopian Airlines | 4 | 2026-04-30 |
| ETH740 | Ethiopian Airlines | 4 | 2026-04-30 |
| ETH737 | Ethiopian Airlines | 4 | 2026-05-22 |
| ETH736 | Ethiopian Airlines | 4 | 2026-05-22 |
| ETH712 | Ethiopian Airlines | 4 | 2026-05-13 |
| ETH639 | Ethiopian Airlines | 4 | 2026-04-23 |
| ETH638 | Ethiopian Airlines | 4 | 2026-04-23 |
| ETH925 | Ethiopian Airlines | 3 | 2026-05-18 |
| ETH845 | Ethiopian Airlines | 3 | 2026-05-20 |
| ETH725 | Ethiopian Airlines | 3 | 2026-04-17 |
| ETH724 | Ethiopian Airlines | 3 | 2026-04-17 |
| ETH719 | - | 3 | 2026-04-14 |
| ETH713 | Ethiopian Airlines | 3 | 2026-05-14 |
| ETH844 | Ethiopian Airlines | 2 | 2026-04-24 |
| ETH600 | Ethiopian Airlines | 2 | 2026-04-28 |
| ETH953 | Ethiopian Airlines | 1 | 2026-04-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | ETH318 | ADD → NBO | May 29, 10:45 UTC | May 29, 10:55 UTC | 10m |
| 2026-05-28 | ETH553 | YYZ → ADD | May 28, 15:05 UTC | May 29, 00:10 UTC | 9h 5m |
| 2026-05-28 | ETH552 | ADD → DUB | May 28, 03:45 UTC | May 28, 11:55 UTC | 8h 10m |
| 2026-05-28 | ETH552 | ADD → DUB | May 28, 00:10 UTC | May 28, 02:10 UTC | 2h 0m |
| 2026-05-26 | ETH553 | YYZ → ADD | May 26, 15:00 UTC | May 27, 00:14 UTC | 9h 15m |
| 2026-05-26 | ETH552 | ADD → DUB | May 26, 03:55 UTC | May 26, 12:10 UTC | 8h 15m |
| 2026-05-26 | ETH552 | ADD → DUB | May 26, 00:39 UTC | May 26, 02:24 UTC | 1h 45m |
| 2026-05-24 | ETH553 | YYZ → ADD | May 24, 14:55 UTC | May 24, 23:46 UTC | 8h 51m |
| 2026-05-24 | ETH552 | ADD → DUB | May 24, 04:05 UTC | May 24, 12:30 UTC | 8h 25m |
| 2026-05-24 | ETH552 | ADD → DUB | May 24, 00:15 UTC | May 24, 02:30 UTC | 2h 15m |
| 2026-05-23 | ETH552 | ADD → DUB | May 23, 00:35 UTC | May 24, 00:25 UTC | 23h 50m |
| 2026-05-22 | ETH737 | MXP → ADD | May 22, 21:45 UTC | May 23, 00:50 UTC | 3h 5m |
| 2026-05-22 | ETH737 | MXP → ADD | May 22, 19:10 UTC | May 22, 19:50 UTC | 40m |
| 2026-05-22 | ETH736 | MXP → ZRH | May 22, 05:20 UTC | May 22, 05:55 UTC | 35m |
| 2026-05-21 | ETH736 | MXP → ZRH | May 21, 11:50 UTC | May 22, 03:50 UTC | 16h 0m |
| 2026-05-20 | ETH845 | ADD → CPT | May 20, 18:25 UTC | May 21, 10:40 UTC | 16h 15m |
| 2026-05-20 | ETH845 | ADD → CPT | May 20, 15:05 UTC | May 21, 10:40 UTC | 19h 35m |
| 2026-05-20 | ETH846 | CPT → ADD | May 20, 13:45 UTC | May 21, 10:30 UTC | 20h 45m |
| 2026-05-19 | ETH629 | BKK → ADD | May 19, 19:10 UTC | May 20, 12:15 UTC | 17h 6m |
| 2026-05-19 | ETH629 | BKK → ADD | May 19, 13:45 UTC | May 19, 16:40 UTC | 2h 55m |
| 2026-05-19 | ETH628 | BKK → CGK | May 19, 07:00 UTC | May 19, 09:55 UTC | 2h 55m |
| 2026-05-19 | ETH628 | BKK → CGK | May 19, 02:00 UTC | May 19, 05:30 UTC | 3h 30m |
| 2026-05-18 | ETH925 | NSI → ADD | May 18, 15:50 UTC | May 18, 16:05 UTC | 15m |
| 2026-05-18 | ETH925 | NSI → ADD | May 18, 11:15 UTC | May 18, 11:45 UTC | 30m |
| 2026-05-16 | ETH553 | YYZ → ADD | May 16, 15:31 UTC | May 17, 00:10 UTC | 8h 40m |
| 2026-05-16 | ETH552 | ADD → DUB | May 16, 04:40 UTC | May 16, 13:21 UTC | 8h 41m |
| 2026-05-15 | ETH552 | ADD → DUB | May 15, 12:05 UTC | May 16, 03:10 UTC | 15h 4m |
| 2026-05-14 | ETH713 | FCO → ADD | May 14, 21:15 UTC | May 15, 10:45 UTC | 13h 30m |
| 2026-05-13 | ETH712 | ADD → FCO | May 13, 13:15 UTC | May 14, 03:50 UTC | 14h 35m |
| 2026-05-12 | ETH553 | YYZ → ADD | May 12, 20:10 UTC | May 13, 12:05 UTC | 15h 55m |
| 2026-05-12 | ETH553 | YYZ → ADD | May 12, 15:10 UTC | May 13, 12:05 UTC | 20h 55m |
| 2026-05-12 | ETH552 | ADD → DUB | May 12, 04:05 UTC | May 12, 12:40 UTC | 8h 35m |
| 2026-05-10 | ETH713 | FCO → ADD | May 10, 21:25 UTC | May 10, 23:25 UTC | 2h 0m |
| 2026-05-09 | ETH712 | ADD → FCO | May 9, 12:10 UTC | May 10, 03:35 UTC | 15h 25m |
| 2026-05-08 | ETH751 | BRU → ADD | May 8, 20:15 UTC | May 9, 10:55 UTC | 14h 40m |
| 2026-05-08 | ETH750 | ADD → BRU | May 8, 01:55 UTC | May 8, 05:09 UTC | 3h 15m |
| 2026-05-05 | ETH737 | MXP → ADD | May 5, 21:45 UTC | May 5, 23:50 UTC | 2h 5m |
| 2026-05-05 | ETH737 | MXP → ADD | May 5, 19:10 UTC | May 5, 19:55 UTC | 45m |
| 2026-05-05 | ETH736 | MXP → ZRH | May 5, 06:35 UTC | May 5, 07:00 UTC | 25m |
| 2026-05-05 | ETH736 | MXP → ZRH | May 5, 02:20 UTC | May 5, 04:55 UTC | 2h 35m |
| 2026-05-03 | ETH629 | BKK → ADD | May 3, 19:10 UTC | May 3, 22:15 UTC | 3h 5m |
| 2026-05-03 | ETH629 | BKK → ADD | May 3, 13:45 UTC | May 3, 16:40 UTC | 2h 55m |
| 2026-05-03 | ETH628 | BKK → CGK | May 3, 09:50 UTC | May 3, 10:00 UTC | 10m |
| 2026-05-03 | ETH628 | BKK → CGK | May 3, 07:05 UTC | May 3, 09:15 UTC | 2h 10m |
| 2026-05-02 | ETH628 | BKK → CGK | May 2, 14:05 UTC | May 3, 05:40 UTC | 15h 34m |
| 2026-04-30 | ETH741 | MAD → ADD | Apr 30, 21:45 UTC | May 1, 00:35 UTC | 2h 50m |
| 2026-04-30 | ETH741 | MAD → ADD | Apr 30, 19:25 UTC | Apr 30, 20:15 UTC | 50m |
| 2026-04-30 | ETH740 | ADD → MAD | Apr 30, 05:40 UTC | Apr 30, 06:35 UTC | 55m |
| 2026-04-29 | ETH740 | ADD → MAD | Apr 29, 13:50 UTC | Apr 30, 04:00 UTC | 14h 9m |
| 2026-04-29 | ETH601 | DXB → ADD | Apr 29, 01:05 UTC | Apr 29, 01:30 UTC | 25m |
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 ET-AYD page for operator, model, and routing details .