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
- 215
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- Jul 24, 22:15 UTC
Current 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 |
|---|---|---|---|
| ETH552 | Ethiopian Airlines | 28 | 2026-07-18 |
| ETH553 | - | 20 | 2026-07-19 |
| ETH741 | - | 13 | 2026-07-20 |
| ETH740 | Ethiopian Airlines | 13 | 2026-07-20 |
| ETH629 | Ethiopian Airlines | 11 | 2026-05-19 |
| ETH628 | Ethiopian Airlines | 11 | 2026-05-19 |
| ETH645 | Ethiopian Airlines | 8 | 2026-06-14 |
| ETH725 | - | 7 | 2026-06-29 |
| ETH724 | - | 7 | 2026-06-29 |
| ETH737 | Ethiopian Airlines | 6 | 2026-05-31 |
| ETH644 | - | 5 | 2026-06-14 |
| ETH609 | Ethiopian Airlines | 5 | 2026-07-24 |
| ETH608 | Ethiopian Airlines | 5 | 2026-07-24 |
| ETH736 | Ethiopian Airlines | 4 | 2026-05-22 |
| ETH731 | Ethiopian Airlines | 4 | 2026-07-05 |
| ETH712 | Ethiopian Airlines | 4 | 2026-05-13 |
| ETH639 | Ethiopian Airlines | 4 | 2026-04-23 |
| ETH638 | Ethiopian Airlines | 4 | 2026-04-23 |
| ETH512 | - | 4 | 2026-07-11 |
| ETH925 | Ethiopian Airlines | 3 | 2026-05-18 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | ETH609 | HKG → BKK | Jul 24, 19:15 UTC | Jul 24, 22:15 UTC | 3h 0m |
| 2026-07-24 | ETH609 | HKG → BKK | Jul 24, 17:15 UTC | Jul 24, 17:45 UTC | 30m |
| 2026-07-24 | ETH608 | BKK → HKG | Jul 24, 07:05 UTC | Jul 24, 07:20 UTC | 15m |
| 2026-07-23 | ETH608 | BKK → HKG | Jul 23, 13:50 UTC | Jul 24, 05:30 UTC | 15h 40m |
| 2026-07-23 | ETH602 | ADD → DXB | Jul 23, 11:50 UTC | Jul 23, 12:00 UTC | 10m |
| 2026-07-22 | ETH611 | BOM → ADD | Jul 22, 23:05 UTC | Jul 22, 23:35 UTC | 30m |
| 2026-07-22 | ETH640 | ADD → BOM | Jul 22, 19:35 UTC | Jul 22, 20:30 UTC | 55m |
| 2026-07-21 | ETH906 | DSS → BKO | Jul 21, 19:10 UTC | Jul 21, 19:40 UTC | 30m |
| 2026-07-20 | ETH741 | - | Jul 20, 22:35 UTC | Jul 21, 17:25 UTC | 18h 49m |
| 2026-07-20 | ETH741 | - | Jul 20, 22:05 UTC | Jul 21, 17:25 UTC | 19h 20m |
| 2026-07-20 | ETH741 | - | Jul 20, 19:25 UTC | Jul 20, 20:15 UTC | 50m |
| 2026-07-20 | ETH740 | ADD → MAD | Jul 20, 05:20 UTC | Jul 20, 06:15 UTC | 55m |
| 2026-07-20 | ETH740 | ADD → MAD | Jul 20, 00:30 UTC | Jul 20, 04:00 UTC | 3h 30m |
| 2026-07-19 | ETH553 | - | Jul 19, 00:35 UTC | Jul 20, 00:30 UTC | 23h 55m |
| 2026-07-18 | ETH553 | - | Jul 18, 15:45 UTC | Jul 19, 01:15 UTC | 9h 30m |
| 2026-07-18 | ETH552 | ADD → DUB | Jul 18, 04:50 UTC | Jul 18, 13:15 UTC | 8h 25m |
| 2026-07-18 | ETH552 | ADD → DUB | Jul 18, 01:15 UTC | Jul 18, 03:10 UTC | 1h 56m |
| 2026-07-16 | ETH553 | - | Jul 16, 15:00 UTC | Jul 17, 01:00 UTC | 10h 0m |
| 2026-07-16 | ETH552 | - | Jul 16, 04:15 UTC | Jul 16, 12:25 UTC | 8h 10m |
| 2026-07-15 | ETH552 | - | Jul 15, 23:25 UTC | Jul 16, 02:15 UTC | 2h 50m |
| 2026-07-15 | ETH552 | - | Jul 15, 00:35 UTC | Jul 16, 00:30 UTC | 23h 55m |
| 2026-07-14 | ETH741 | - | Jul 14, 21:40 UTC | Jul 15, 01:25 UTC | 3h 44m |
| 2026-07-14 | ETH741 | - | Jul 14, 19:15 UTC | Jul 14, 20:00 UTC | 45m |
| 2026-07-14 | ETH740 | - | Jul 14, 05:35 UTC | Jul 14, 06:25 UTC | 50m |
| 2026-07-13 | ETH740 | - | Jul 13, 08:35 UTC | Jul 14, 03:55 UTC | 19h 20m |
| 2026-07-13 | ETH740 | - | Jul 13, 08:25 UTC | Jul 14, 03:55 UTC | 19h 30m |
| 2026-07-13 | ETH907 | - | Jul 13, 05:20 UTC | Jul 13, 05:55 UTC | 35m |
| 2026-07-12 | ETH513 | - | Jul 12, 09:25 UTC | Jul 13, 05:55 UTC | 20h 30m |
| 2026-07-12 | ETH513 | - | Jul 12, 03:05 UTC | Jul 12, 10:20 UTC | 7h 15m |
| 2026-07-11 | ETH512 | - | Jul 11, 15:20 UTC | Jul 11, 23:05 UTC | 7h 45m |
| 2026-07-11 | ETH512 | - | Jul 11, 00:35 UTC | Jul 11, 23:05 UTC | 22h 30m |
| 2026-07-10 | ETH553 | - | Jul 10, 22:35 UTC | Jul 11, 22:30 UTC | 23h 55m |
| 2026-07-10 | ETH553 | - | Jul 10, 20:35 UTC | Jul 11, 16:10 UTC | 19h 35m |
| 2026-07-10 | ETH553 | - | Jul 10, 20:00 UTC | Jul 11, 16:10 UTC | 20h 10m |
| 2026-07-10 | ETH553 | - | Jul 10, 15:05 UTC | Jul 11, 01:05 UTC | 10h 0m |
| 2026-07-10 | ETH552 | FCO → YYZ | Jul 10, 03:50 UTC | Jul 10, 12:30 UTC | 8h 40m |
| 2026-07-09 | ETH552 | - | Jul 9, 23:10 UTC | Jul 10, 01:55 UTC | 2h 45m |
| 2026-07-08 | ETH729 | - | Jul 8, 20:40 UTC | Jul 8, 23:00 UTC | 2h 20m |
| 2026-07-08 | ETH729 | MAN → GVA | Jul 8, 17:55 UTC | Jul 8, 19:25 UTC | 1h 30m |
| 2026-07-08 | ETH728 | GVA → MAN | Jul 8, 06:05 UTC | Jul 8, 07:30 UTC | 1h 25m |
| 2026-07-07 | ETH728 | - | Jul 7, 09:10 UTC | Jul 8, 04:10 UTC | 19h 0m |
| 2026-07-07 | ETH513 | - | Jul 7, 02:55 UTC | Jul 7, 03:35 UTC | 40m |
| 2026-07-06 | ETH512 | - | Jul 6, 15:40 UTC | Jul 6, 23:35 UTC | 7h 55m |
| 2026-07-05 | ETH512 | - | Jul 5, 22:40 UTC | Jul 6, 16:35 UTC | 17h 55m |
| 2026-07-05 | ETH731 | DUB → ADD | Jul 5, 20:35 UTC | Jul 6, 16:35 UTC | 20h 0m |
| 2026-07-05 | ETH731 | DUB → ADD | Jul 5, 20:25 UTC | Jul 6, 16:35 UTC | 20h 10m |
| 2026-07-05 | ETH731 | DUB → ADD | Jul 5, 17:50 UTC | Jul 5, 18:45 UTC | 55m |
| 2026-07-05 | ETH730 | VIE → WAW | Jul 5, 05:10 UTC | Jul 5, 06:05 UTC | 55m |
| 2026-07-04 | ETH730 | - | Jul 4, 14:05 UTC | Jul 5, 03:45 UTC | 13h 40m |
| 2026-07-03 | ETH519 | - | Jul 3, 16:35 UTC | Jul 4, 10:35 UTC | 18h 0m |
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 .