sensors Mode-S transponder
040156
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-AVN · BOEING 777-200LR
- Hex
- 040156
- Octal
- 01000526
- Decimal
- 262,486
- Country
- ET
- Tail
- ET-AVN
- Type
- B77L
- Flights observed
- 100
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 040156 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 |
|---|---|---|---|
| ETH3702 | Ethiopian Airlines | 7 | 2026-05-20 |
| ETH3750 | Ethiopian Airlines | 5 | 2026-05-14 |
| ETH3712 | Ethiopian Airlines | 5 | 2026-05-28 |
| ETH3657 | Ethiopian Airlines | 5 | 2026-05-01 |
| ETH3605 | Ethiopian Airlines | 5 | 2026-05-26 |
| ETH3751 | Ethiopian Airlines | 4 | 2026-04-24 |
| ETH3638 | Ethiopian Airlines | 4 | 2026-05-27 |
| ETH3502 | Ethiopian Airlines | 4 | 2026-05-29 |
| ETH3807 | Ethiopian Airlines | 3 | 2026-04-18 |
| ETH3739 | Ethiopian Airlines | 3 | 2026-05-25 |
| ETH3714 | Ethiopian Airlines | 3 | 2026-04-15 |
| ETH3707 | Ethiopian Airlines | 3 | 2026-05-06 |
| ETH3685 | Ethiopian Airlines | 3 | 2026-05-07 |
| ETH3640 | Ethiopian Airlines | 3 | 2026-04-27 |
| ETH3518 | Ethiopian Airlines | 3 | 2026-05-24 |
| ETH3516 | Ethiopian Airlines | 3 | 2026-05-24 |
| ETH3715 | Ethiopian Airlines | 2 | 2026-05-28 |
| ETH3706 | Ethiopian Airlines | 2 | 2026-04-19 |
| ETH3691 | - | 2 | 2026-04-19 |
| ETH3681 | Ethiopian Airlines | 2 | 2026-04-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | ETH3502 | LGG → ORD | May 29, 23:25 UTC | May 30, 01:30 UTC | 2h 5m |
| 2026-05-29 | ETH3502 | LGG → ORD | May 29, 06:45 UTC | May 29, 21:40 UTC | 14h 55m |
| 2026-05-28 | ETH3715 | LGG → ADD | May 28, 18:05 UTC | May 29, 04:15 UTC | 10h 10m |
| 2026-05-28 | ETH3712 | ADD → LGG | May 28, 11:20 UTC | May 28, 15:15 UTC | 3h 55m |
| 2026-05-27 | ETH3712 | ADD → LGG | May 27, 17:35 UTC | May 28, 15:15 UTC | 21h 40m |
| 2026-05-27 | ETH3638 | ADD → KUL | May 27, 15:35 UTC | May 28, 15:15 UTC | 23h 40m |
| 2026-05-27 | ETH3638 | ADD → KUL | May 27, 15:25 UTC | May 28, 13:30 UTC | 22h 5m |
| 2026-05-26 | ETH3605 | LGG → CGO | May 26, 16:15 UTC | May 27, 08:40 UTC | 16h 26m |
| 2026-05-26 | ETH3605 | LGG → CGO | May 26, 11:34 UTC | May 27, 08:40 UTC | 21h 6m |
| 2026-05-26 | ETH3605 | LGG → CGO | May 26, 10:44 UTC | May 27, 08:40 UTC | 21h 56m |
| 2026-05-25 | ETH3739 | GRU → SCL | May 25, 15:20 UTC | May 26, 07:49 UTC | 16h 29m |
| 2026-05-25 | ETH3739 | GRU → SCL | May 25, 12:00 UTC | May 26, 07:49 UTC | 19h 49m |
| 2026-05-25 | ETH3739 | GRU → SCL | May 25, 07:35 UTC | May 26, 07:29 UTC | 23h 54m |
| 2026-05-25 | ETH3738 | LGG → PVG | May 25, 06:40 UTC | May 26, 01:49 UTC | 19h 9m |
| 2026-05-24 | ETH3518 | MIA → LGG | May 24, 19:30 UTC | May 25, 03:45 UTC | 8h 15m |
| 2026-05-24 | ETH3518 | MIA → LGG | May 24, 16:35 UTC | May 24, 17:10 UTC | 35m |
| 2026-05-24 | ETH3518 | MIA → LGG | May 24, 14:05 UTC | May 24, 14:15 UTC | 10m |
| 2026-05-24 | ETH3516 | MEX → BOG | May 24, 11:45 UTC | May 24, 11:55 UTC | 10m |
| 2026-05-24 | ETH3516 | MEX → BOG | May 24, 08:15 UTC | May 24, 09:45 UTC | 1h 30m |
| 2026-05-23 | ETH3516 | MEX → BOG | May 23, 18:35 UTC | May 24, 05:45 UTC | 11h 10m |
| 2026-05-23 | ETH3511 | MIA → LGG | May 23, 09:00 UTC | May 23, 16:45 UTC | 7h 45m |
| 2026-05-22 | ETH3502 | LGG → ORD | May 22, 21:15 UTC | May 23, 06:45 UTC | 9h 29m |
| 2026-05-22 | ETH3502 | LGG → ORD | May 22, 15:25 UTC | May 22, 18:25 UTC | 3h 0m |
| 2026-05-20 | ETH3638 | ADD → KUL | May 20, 17:20 UTC | May 20, 20:20 UTC | 3h 0m |
| 2026-05-20 | ETH3702 | ADD → BRU | May 20, 10:25 UTC | May 20, 14:40 UTC | 4h 15m |
| 2026-05-17 | ETH3858 | - | May 17, 22:35 UTC | May 17, 23:00 UTC | 25m |
| 2026-05-17 | ETH3715 | LGG → ADD | May 17, 09:40 UTC | May 17, 20:01 UTC | 10h 20m |
| 2026-05-16 | ETH3712 | ADD → LGG | May 16, 12:55 UTC | May 17, 07:10 UTC | 18h 15m |
| 2026-05-16 | ETH3712 | ADD → LGG | May 16, 09:56 UTC | May 17, 07:10 UTC | 21h 15m |
| 2026-05-15 | ETH3656 | LGG → LGG | May 15, 07:55 UTC | May 16, 03:00 UTC | 19h 5m |
| 2026-05-14 | ETH3750 | LGG → CAN | May 14, 16:40 UTC | May 15, 11:20 UTC | 18h 40m |
| 2026-05-14 | ETH3720 | ADD → LGG | May 14, 10:20 UTC | May 14, 14:30 UTC | 4h 10m |
| 2026-05-13 | ETH3603 | SHJ → SHJ | May 13, 23:50 UTC | May 14, 00:05 UTC | 15m |
| 2026-05-11 | ETH3711 | DUB → BRU | May 11, 10:00 UTC | May 11, 20:20 UTC | 10h 20m |
| 2026-05-10 | ETH3702 | ADD → BRU | May 10, 11:35 UTC | May 11, 07:10 UTC | 19h 35m |
| 2026-05-10 | ETH3702 | ADD → BRU | May 10, 10:24 UTC | May 11, 07:10 UTC | 20h 45m |
| 2026-05-09 | ETH3490 | - | May 9, 23:40 UTC | May 10, 11:55 UTC | 12h 15m |
| 2026-05-07 | ETH3685 | HKG → ADD | May 7, 11:05 UTC | May 7, 14:30 UTC | 3h 25m |
| 2026-05-07 | ETH3685 | HKG → ADD | May 7, 09:20 UTC | May 7, 09:30 UTC | 10m |
| 2026-05-07 | ETH3673 | ICN → HKG | May 7, 06:00 UTC | May 7, 06:20 UTC | 20m |
| 2026-05-07 | ETH3673 | ICN → HKG | May 7, 03:10 UTC | May 7, 05:25 UTC | 2h 15m |
| 2026-05-07 | ETH3672 | OSL → ICN | May 7, 00:55 UTC | May 7, 01:05 UTC | 10m |
| 2026-05-06 | ETH3672 | OSL → ICN | May 6, 16:40 UTC | May 6, 22:20 UTC | 5h 39m |
| 2026-05-06 | ETH3707 | LGG → HKG | May 6, 12:15 UTC | May 6, 14:20 UTC | 2h 5m |
| 2026-05-06 | ETH3707 | LGG → HKG | May 6, 05:55 UTC | May 6, 10:30 UTC | 4h 35m |
| 2026-05-05 | ETH3707 | LGG → HKG | May 5, 23:05 UTC | May 5, 23:20 UTC | 15m |
| 2026-05-05 | ETH3794 | MST → MST | May 5, 09:35 UTC | May 5, 20:25 UTC | 10h 50m |
| 2026-05-05 | ETH3408 | - | May 5, 02:45 UTC | May 5, 07:05 UTC | 4h 20m |
| 2026-05-03 | ETH3291 | - | May 3, 06:30 UTC | May 3, 18:25 UTC | 11h 55m |
| 2026-05-01 | ETH3657 | ADD → LGG | May 1, 23:30 UTC | May 2, 00:05 UTC | 35m |
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-AVN page for operator, model, and routing details .