sensors Mode-S transponder
040141
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-AUP · BOEING 787-9 Dreamliner
- Hex
- 040141
- Octal
- 01000501
- Decimal
- 262,465
- Country
- ET
- Tail
- ET-AUP
- Type
- B789
- Flights observed
- 75
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address 040141 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 |
|---|---|---|---|
| ETH645 | Ethiopian Airlines | 7 | 2026-05-05 |
| ETH644 | Ethiopian Airlines | 6 | 2026-05-05 |
| ETH741 | Ethiopian Airlines | 5 | 2026-04-23 |
| ETH740 | Ethiopian Airlines | 5 | 2026-04-23 |
| ETH736 | Ethiopian Airlines | 5 | 2026-05-26 |
| ETH609 | Ethiopian Airlines | 5 | 2026-05-18 |
| ETH638 | Ethiopian Airlines | 4 | 2026-05-10 |
| ETH608 | Ethiopian Airlines | 4 | 2026-04-17 |
| ETH913 | Ethiopian Airlines | 3 | 2026-04-21 |
| ETH737 | Ethiopian Airlines | 3 | 2026-05-14 |
| ETH715 | Ethiopian Airlines | 3 | 2026-05-03 |
| ETH629 | Ethiopian Airlines | 3 | 2026-05-16 |
| ETH628 | Ethiopian Airlines | 3 | 2026-05-24 |
| ETH750 | Ethiopian Airlines | 2 | 2026-05-01 |
| ETH714 | Ethiopian Airlines | 2 | 2026-05-03 |
| ETH639 | Ethiopian Airlines | 2 | 2026-04-19 |
| ETH925 | Ethiopian Airlines | 1 | 2026-04-22 |
| ETH859 | Ethiopian Airlines | 1 | 2026-04-15 |
| ETH848 | Ethiopian Airlines | 1 | 2026-04-15 |
| ETH847 | Ethiopian Airlines | 1 | 2026-05-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | ETH552 | ADD → DUB | May 30, 00:45 UTC | May 30, 02:45 UTC | 2h 0m |
| 2026-05-28 | ETH712 | ADD → FCO | May 28, 01:30 UTC | May 28, 03:25 UTC | 1h 55m |
| 2026-05-26 | ETH736 | MXP → ZRH | May 26, 01:24 UTC | May 26, 03:45 UTC | 2h 20m |
| 2026-05-25 | ETH847 | ADD → CPT | May 25, 11:35 UTC | May 25, 12:10 UTC | 35m |
| 2026-05-24 | ETH628 | BKK → CGK | May 24, 10:20 UTC | May 24, 10:30 UTC | 10m |
| 2026-05-24 | ETH628 | BKK → CGK | May 24, 07:35 UTC | May 24, 09:50 UTC | 2h 15m |
| 2026-05-24 | ETH628 | BKK → CGK | May 24, 02:15 UTC | May 24, 05:55 UTC | 3h 40m |
| 2026-05-18 | ETH609 | HKG → BKK | May 18, 19:20 UTC | May 18, 22:30 UTC | 3h 10m |
| 2026-05-18 | ETH609 | HKG → BKK | May 18, 17:10 UTC | May 18, 17:35 UTC | 25m |
| 2026-05-17 | ETH835 | ADD → WDH | May 17, 07:20 UTC | May 18, 04:20 UTC | 21h 0m |
| 2026-05-16 | ETH629 | BKK → ADD | May 16, 19:45 UTC | May 17, 07:25 UTC | 11h 40m |
| 2026-05-16 | ETH629 | BKK → ADD | May 16, 17:30 UTC | May 16, 18:10 UTC | 40m |
| 2026-05-16 | ETH629 | BKK → ADD | May 16, 15:40 UTC | May 16, 15:55 UTC | 15m |
| 2026-05-14 | ETH737 | MXP → ADD | May 14, 21:50 UTC | May 14, 23:45 UTC | 1h 55m |
| 2026-05-14 | ETH736 | MXP → ZRH | May 14, 05:55 UTC | May 14, 06:10 UTC | 15m |
| 2026-05-14 | ETH736 | MXP → ZRH | May 14, 01:40 UTC | May 14, 04:15 UTC | 2h 35m |
| 2026-05-10 | ETH638 | ADD → SIN | May 10, 02:00 UTC | May 10, 05:50 UTC | 3h 50m |
| 2026-05-09 | ETH638 | ADD → SIN | May 9, 04:25 UTC | May 10, 02:45 UTC | 22h 20m |
| 2026-05-09 | ETH686 | ADD → DEL | May 9, 01:30 UTC | May 9, 02:10 UTC | 40m |
| 2026-05-07 | ETH737 | MXP → ADD | May 7, 21:55 UTC | May 8, 00:49 UTC | 2h 54m |
| 2026-05-07 | ETH737 | MXP → ADD | May 7, 19:20 UTC | May 7, 19:55 UTC | 35m |
| 2026-05-07 | ETH736 | MXP → ZRH | May 7, 05:40 UTC | May 7, 06:05 UTC | 25m |
| 2026-05-06 | ETH736 | MXP → ZRH | May 6, 13:20 UTC | May 7, 04:20 UTC | 14h 59m |
| 2026-05-05 | ETH645 | HKG → ADD | May 5, 18:35 UTC | May 6, 12:01 UTC | 17h 25m |
| 2026-05-05 | ETH645 | HKG → ADD | May 5, 16:55 UTC | May 5, 17:05 UTC | 10m |
| 2026-05-05 | ETH645 | HKG → ADD | May 5, 13:35 UTC | May 5, 15:15 UTC | 1h 40m |
| 2026-05-05 | ETH644 | HKG → MNL | May 5, 08:25 UTC | May 5, 10:00 UTC | 1h 35m |
| 2026-05-04 | ETH644 | HKG → MNL | May 4, 15:30 UTC | May 5, 06:45 UTC | 15h 16m |
| 2026-05-03 | ETH715 | ARN → ADD | May 3, 20:20 UTC | May 4, 15:30 UTC | 19h 10m |
| 2026-05-03 | ETH715 | ARN → ADD | May 3, 20:05 UTC | May 4, 15:30 UTC | 19h 25m |
| 2026-05-03 | ETH715 | ARN → ADD | May 3, 18:05 UTC | May 3, 18:45 UTC | 40m |
| 2026-05-03 | ETH714 | ADD → ARN | May 3, 05:55 UTC | May 3, 06:40 UTC | 45m |
| 2026-05-02 | ETH714 | ADD → ARN | May 2, 23:55 UTC | May 3, 04:05 UTC | 4h 9m |
| 2026-05-01 | ETH751 | BRU → ADD | May 1, 19:40 UTC | May 1, 22:25 UTC | 2h 45m |
| 2026-05-01 | ETH750 | ADD → BRU | May 1, 01:30 UTC | May 1, 05:15 UTC | 3h 45m |
| 2026-04-30 | ETH750 | ADD → BRU | Apr 30, 07:10 UTC | May 1, 05:15 UTC | 22h 5m |
| 2026-04-29 | ETH645 | HKG → ADD | Apr 29, 18:40 UTC | Apr 30, 07:10 UTC | 12h 29m |
| 2026-04-29 | ETH645 | HKG → ADD | Apr 29, 16:50 UTC | Apr 29, 17:01 UTC | 10m |
| 2026-04-29 | ETH645 | HKG → ADD | Apr 29, 14:45 UTC | Apr 29, 14:50 UTC | 5m |
| 2026-04-29 | ETH645 | HKG → ADD | Apr 29, 13:10 UTC | Apr 29, 14:15 UTC | 1h 5m |
| 2026-04-29 | ETH644 | HKG → MNL | Apr 29, 09:20 UTC | Apr 29, 10:20 UTC | 1h 0m |
| 2026-04-29 | ETH644 | HKG → MNL | Apr 29, 08:40 UTC | Apr 29, 08:50 UTC | 10m |
| 2026-04-29 | ETH644 | HKG → MNL | Apr 29, 06:05 UTC | Apr 29, 06:49 UTC | 45m |
| 2026-04-29 | ETH644 | HKG → MNL | Apr 29, 01:05 UTC | Apr 29, 04:10 UTC | 3h 5m |
| 2026-04-25 | ETH707 | FRA → ADD | Apr 25, 20:30 UTC | Apr 25, 23:10 UTC | 2h 40m |
| 2026-04-24 | ETH706 | ADD → FRA | Apr 24, 12:55 UTC | Apr 25, 04:25 UTC | 15h 30m |
| 2026-04-23 | ETH741 | MAD → ADD | Apr 23, 21:55 UTC | Apr 24, 11:05 UTC | 13h 10m |
| 2026-04-23 | ETH741 | MAD → ADD | Apr 23, 19:10 UTC | Apr 23, 20:00 UTC | 50m |
| 2026-04-23 | ETH740 | ADD → MAD | Apr 23, 06:30 UTC | Apr 23, 07:20 UTC | 50m |
| 2026-04-22 | ETH740 | ADD → MAD | Apr 22, 14:30 UTC | Apr 23, 04:50 UTC | 14h 20m |
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-AUP page for operator, model, and routing details .