sensors Mode-S transponder
040159
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-AVQ · BOEING 777-200LR
- Hex
- 040159
- Octal
- 01000531
- Decimal
- 262,489
- Country
- ET
- Tail
- ET-AVQ
- Type
- B77L
- Flights observed
- 138
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address 040159 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 |
|---|---|---|---|
| ETH3651 | Ethiopian Airlines | 18 | 2026-05-28 |
| ETH3640 | Ethiopian Airlines | 10 | 2026-05-12 |
| ETH3516 | Ethiopian Airlines | 9 | 2026-05-17 |
| ETH3652 | Ethiopian Airlines | 8 | 2026-05-28 |
| ETH3618 | Ethiopian Airlines | 8 | 2026-05-13 |
| ETH3518 | Ethiopian Airlines | 8 | 2026-05-17 |
| ETH3502 | Ethiopian Airlines | 7 | 2026-05-16 |
| ETH3400 | Ethiopian Airlines | 7 | 2026-04-17 |
| ETH3739 | Ethiopian Airlines | 6 | 2026-05-02 |
| ETH3690 | - | 6 | 2026-05-29 |
| ETH3720 | Ethiopian Airlines | 4 | 2026-05-04 |
| ETH3691 | - | 4 | 2026-04-25 |
| ETH3629 | Ethiopian Airlines | 4 | 2026-05-13 |
| ETH3290 | Ethiopian Airlines | 4 | 2026-05-24 |
| ETH3712 | Ethiopian Airlines | 3 | 2026-05-13 |
| ETH3706 | Ethiopian Airlines | 3 | 2026-04-27 |
| ETH3685 | - | 3 | 2026-04-13 |
| ETH3511 | Ethiopian Airlines | 3 | 2026-05-16 |
| ETH3291 | - | 3 | 2026-05-25 |
| ETH3750 | Ethiopian Airlines | 2 | 2026-05-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | ETH3690 | - | May 29, 22:00 UTC | May 30, 01:15 UTC | 3h 15m |
| 2026-05-29 | ETH3690 | - | May 29, 02:20 UTC | May 30, 01:15 UTC | 22h 55m |
| 2026-05-28 | ETH3652 | SCL → LOS | May 28, 23:50 UTC | May 29, 00:00 UTC | 10m |
| 2026-05-28 | ETH3651 | ADD → ACC | May 28, 18:25 UTC | May 28, 19:50 UTC | 1h 25m |
| 2026-05-28 | ETH3651 | ADD → ACC | May 28, 14:55 UTC | May 28, 16:25 UTC | 1h 30m |
| 2026-05-27 | ETH3651 | ADD → ACC | May 27, 16:20 UTC | May 28, 16:15 UTC | 23h 55m |
| 2026-05-27 | ETH3690 | - | May 27, 05:19 UTC | May 27, 19:05 UTC | 13h 46m |
| 2026-05-26 | ETH3690 | - | May 26, 19:25 UTC | May 27, 16:50 UTC | 21h 25m |
| 2026-05-26 | ETH3910 | - | May 26, 00:19 UTC | May 26, 20:05 UTC | 19h 45m |
| 2026-05-25 | ETH3291 | - | May 25, 22:19 UTC | May 26, 20:05 UTC | 21h 45m |
| 2026-05-25 | ETH3291 | - | May 25, 21:19 UTC | May 26, 20:05 UTC | 22h 45m |
| 2026-05-25 | ETH3291 | - | May 25, 07:35 UTC | May 26, 00:35 UTC | 16h 59m |
| 2026-05-24 | ETH3290 | ADD → MCT | May 24, 12:20 UTC | May 25, 10:30 UTC | 22h 10m |
| 2026-05-24 | ETH3652 | SCL → LOS | May 24, 10:20 UTC | May 25, 10:15 UTC | 23h 55m |
| 2026-05-24 | ETH3652 | SCL → LOS | May 24, 09:40 UTC | May 25, 08:15 UTC | 22h 35m |
| 2026-05-24 | ETH3651 | ADD → ACC | May 24, 02:55 UTC | May 24, 05:20 UTC | 2h 25m |
| 2026-05-23 | ETH3651 | ADD → ACC | May 23, 22:00 UTC | May 23, 23:35 UTC | 1h 35m |
| 2026-05-23 | ETH3651 | ADD → ACC | May 23, 03:10 UTC | May 23, 23:35 UTC | 20h 25m |
| 2026-05-23 | ETH3651 | ADD → ACC | May 23, 01:00 UTC | May 23, 23:35 UTC | 22h 35m |
| 2026-05-22 | ETH3290 | ADD → MCT | May 22, 13:30 UTC | May 23, 03:30 UTC | 14h 0m |
| 2026-05-21 | ETH3290 | ADD → MCT | May 21, 16:55 UTC | May 22, 16:15 UTC | 23h 20m |
| 2026-05-21 | ETH3652 | SCL → LOS | May 21, 15:30 UTC | May 22, 14:15 UTC | 22h 45m |
| 2026-05-21 | ETH3652 | SCL → LOS | May 21, 14:20 UTC | May 21, 14:30 UTC | 10m |
| 2026-05-21 | ETH3651 | ADD → ACC | May 21, 08:20 UTC | May 21, 09:50 UTC | 1h 30m |
| 2026-05-20 | ETH3651 | ADD → ACC | May 20, 10:25 UTC | May 21, 06:15 UTC | 19h 50m |
| 2026-05-20 | ETH3651 | ADD → ACC | May 20, 08:20 UTC | May 21, 06:15 UTC | 21h 55m |
| 2026-05-20 | ETH3651 | ADD → ACC | May 20, 07:50 UTC | May 21, 06:15 UTC | 22h 25m |
| 2026-05-19 | ETH3290 | ADD → MCT | May 19, 20:25 UTC | May 20, 11:05 UTC | 14h 41m |
| 2026-05-18 | ETH3717 | LGG → ADD | May 18, 10:50 UTC | May 18, 14:05 UTC | 3h 15m |
| 2026-05-17 | ETH3518 | MIA → LGG | May 17, 23:20 UTC | May 18, 07:25 UTC | 8h 5m |
| 2026-05-17 | ETH3518 | MIA → LGG | May 17, 20:25 UTC | May 17, 21:05 UTC | 40m |
| 2026-05-17 | ETH3518 | MIA → LGG | May 17, 17:50 UTC | May 17, 17:55 UTC | 5m |
| 2026-05-17 | ETH3516 | MEX → BOG | May 17, 15:15 UTC | May 17, 15:31 UTC | 15m |
| 2026-05-17 | ETH3516 | MEX → BOG | May 17, 11:40 UTC | May 17, 13:15 UTC | 1h 35m |
| 2026-05-16 | ETH3516 | MEX → BOG | May 16, 22:30 UTC | May 17, 09:45 UTC | 11h 15m |
| 2026-05-16 | ETH3511 | MIA → LGG | May 16, 13:01 UTC | May 16, 20:40 UTC | 7h 40m |
| 2026-05-16 | ETH3502 | LGG → ORD | May 16, 01:00 UTC | May 16, 10:46 UTC | 9h 46m |
| 2026-05-15 | ETH3502 | LGG → ORD | May 15, 20:30 UTC | May 15, 22:55 UTC | 2h 25m |
| 2026-05-15 | ETH3502 | LGG → ORD | May 15, 01:40 UTC | May 15, 22:55 UTC | 21h 14m |
| 2026-05-14 | ETH3715 | LGG → ADD | May 14, 12:55 UTC | May 14, 23:05 UTC | 10h 10m |
| 2026-05-13 | ETH3712 | ADD → LGG | May 13, 14:20 UTC | May 14, 09:40 UTC | 19h 20m |
| 2026-05-13 | ETH3712 | ADD → LGG | May 13, 13:45 UTC | May 14, 09:40 UTC | 19h 55m |
| 2026-05-13 | ETH3629 | HKG → ADD | May 13, 12:00 UTC | May 13, 12:15 UTC | 15m |
| 2026-05-13 | ETH3618 | ICN → HKG | May 13, 09:25 UTC | May 13, 09:40 UTC | 15m |
| 2026-05-13 | ETH3618 | ICN → HKG | May 13, 06:30 UTC | May 13, 08:40 UTC | 2h 10m |
| 2026-05-12 | ETH3640 | OSL → ICN | May 12, 19:45 UTC | May 13, 00:25 UTC | 4h 40m |
| 2026-05-12 | ETH3499 | HKG → HKG | May 12, 16:40 UTC | May 12, 18:05 UTC | 1h 25m |
| 2026-05-12 | ETH3499 | HKG → HKG | May 12, 06:50 UTC | May 12, 14:05 UTC | 7h 15m |
| 2026-05-11 | ETH3718 | LGG → HKG | May 11, 12:00 UTC | May 11, 15:35 UTC | 3h 35m |
| 2026-05-11 | ETH3518 | MIA → LGG | May 11, 01:40 UTC | May 11, 09:50 UTC | 8h 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 ET-AVQ page for operator, model, and routing details .