sensors Mode-S transponder
04008D
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-ARK · BOEING 777-200LR
- Hex
- 04008D
- Octal
- 01000215
- Decimal
- 262,285
- Country
- ET
- Tail
- ET-ARK
- Type
- B77L
- Flights observed
- 206
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 13h ago
Last known position
Country allocation
The ICAO 24-bit address 04008D 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 |
|---|---|---|---|
| ETH3739 | Ethiopian Airlines | 13 | 2026-06-03 |
| ETH3714 | Ethiopian Airlines | 10 | 2026-06-11 |
| ETH3640 | - | 9 | 2026-07-06 |
| ETH3785 | - | 8 | 2026-06-19 |
| ETH3712 | - | 8 | 2026-06-17 |
| ETH3750 | Ethiopian Airlines | 7 | 2026-06-08 |
| ETH3685 | - | 7 | 2026-07-06 |
| ETH3751 | Ethiopian Airlines | 6 | 2026-06-09 |
| ETH3738 | Ethiopian Airlines | 6 | 2026-06-02 |
| ETH3604 | Ethiopian Airlines | 6 | 2026-07-04 |
| ETH3784 | - | 5 | 2026-06-21 |
| ETH3720 | Ethiopian Airlines | 5 | 2026-06-08 |
| ETH3718 | Ethiopian Airlines | 5 | 2026-05-05 |
| ETH3704 | Ethiopian Airlines | 5 | 2026-06-05 |
| ETH3702 | - | 5 | 2026-07-03 |
| ETH3656 | - | 5 | 2026-06-22 |
| ETH3618 | - | 5 | 2026-07-06 |
| ETH3707 | Ethiopian Airlines | 4 | 2026-06-27 |
| ETH3229 | Ethiopian Airlines | 4 | 2026-05-06 |
| ETH3856 | - | 3 | 2026-07-15 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-16 | ETH3490 | - | Jul 16, 20:19 UTC | Jul 17, 14:35 UTC | 18h 15m |
| 2026-07-16 | ETH3490 | - | Jul 16, 09:20 UTC | Jul 17, 00:10 UTC | 14h 50m |
| 2026-07-15 | ETH3857 | - | Jul 15, 14:50 UTC | Jul 16, 06:10 UTC | 15h 20m |
| 2026-07-15 | ETH3856 | - | Jul 15, 03:25 UTC | Jul 15, 07:05 UTC | 3h 40m |
| 2026-07-12 | ETH3788 | - | Jul 12, 15:45 UTC | Jul 13, 07:45 UTC | 16h 0m |
| 2026-07-07 | ETH3603 | - | Jul 7, 17:00 UTC | Jul 7, 17:25 UTC | 25m |
| 2026-07-06 | ETH3685 | - | Jul 6, 11:30 UTC | Jul 6, 15:00 UTC | 3h 30m |
| 2026-07-06 | ETH3685 | - | Jul 6, 10:00 UTC | Jul 6, 10:15 UTC | 15m |
| 2026-07-06 | ETH3618 | - | Jul 6, 04:45 UTC | Jul 6, 07:40 UTC | 2h 55m |
| 2026-07-06 | ETH3640 | - | Jul 6, 02:10 UTC | Jul 6, 02:30 UTC | 20m |
| 2026-07-05 | ETH3640 | - | Jul 5, 17:30 UTC | Jul 5, 20:30 UTC | 3h 0m |
| 2026-07-05 | ETH3640 | - | Jul 5, 13:25 UTC | Jul 5, 15:00 UTC | 1h 35m |
| 2026-07-04 | ETH3604 | LGG → LGG | Jul 4, 13:20 UTC | Jul 5, 10:55 UTC | 21h 35m |
| 2026-07-04 | ETH3604 | LGG → LGG | Jul 4, 12:50 UTC | Jul 5, 10:55 UTC | 22h 5m |
| 2026-07-03 | ETH3702 | - | Jul 3, 15:20 UTC | Jul 4, 10:25 UTC | 19h 5m |
| 2026-07-03 | ETH3702 | - | Jul 3, 13:30 UTC | Jul 4, 10:25 UTC | 20h 55m |
| 2026-07-03 | ETH3702 | - | Jul 3, 12:40 UTC | Jul 4, 10:25 UTC | 21h 45m |
| 2026-07-02 | ETH3856 | - | Jul 2, 12:25 UTC | Jul 3, 06:00 UTC | 17h 35m |
| 2026-07-02 | ETH3685 | - | Jul 2, 09:20 UTC | Jul 3, 06:00 UTC | 20h 40m |
| 2026-07-02 | ETH3685 | - | Jul 2, 08:45 UTC | Jul 3, 06:00 UTC | 21h 15m |
| 2026-07-02 | ETH3685 | - | Jul 2, 07:25 UTC | Jul 2, 07:40 UTC | 15m |
| 2026-07-02 | ETH3673 | - | Jul 2, 04:30 UTC | Jul 2, 04:55 UTC | 25m |
| 2026-07-02 | ETH3673 | - | Jul 2, 01:50 UTC | Jul 2, 04:00 UTC | 2h 10m |
| 2026-07-01 | ETH3672 | - | Jul 1, 22:40 UTC | Jul 1, 23:05 UTC | 25m |
| 2026-07-01 | ETH3672 | - | Jul 1, 14:15 UTC | Jul 1, 18:55 UTC | 4h 40m |
| 2026-07-01 | ETH3672 | GKE → OSL | Jul 1, 10:25 UTC | Jul 1, 11:50 UTC | 1h 25m |
| 2026-06-30 | ETH3400 | - | Jun 30, 16:05 UTC | Jul 1, 08:40 UTC | 16h 35m |
| 2026-06-30 | ETH3622 | ADD → DXB | Jun 30, 07:30 UTC | Jun 30, 13:15 UTC | 5h 45m |
| 2026-06-28 | ETH3619 | - | Jun 28, 12:15 UTC | Jun 28, 15:14 UTC | 3h 0m |
| 2026-06-28 | ETH3619 | - | Jun 28, 07:40 UTC | Jun 28, 08:50 UTC | 1h 10m |
| 2026-06-27 | ETH3792 | LGG → LGG | Jun 27, 19:15 UTC | Jun 28, 05:24 UTC | 10h 10m |
| 2026-06-27 | ETH3707 | LGG → HKG | Jun 27, 15:14 UTC | Jun 27, 17:20 UTC | 2h 5m |
| 2026-06-27 | ETH3793 | - | Jun 27, 07:30 UTC | Jun 27, 13:15 UTC | 5h 45m |
| 2026-06-27 | ETH3793 | - | Jun 27, 02:14 UTC | Jun 27, 02:29 UTC | 15m |
| 2026-06-26 | ETH3218 | - | Jun 26, 21:55 UTC | Jun 26, 22:19 UTC | 25m |
| 2026-06-26 | ETH3218 | - | Jun 26, 05:55 UTC | Jun 26, 21:10 UTC | 15h 15m |
| 2026-06-26 | ETH3610 | - | Jun 26, 02:05 UTC | Jun 26, 03:05 UTC | 1h 0m |
| 2026-06-24 | ETH3638 | ADD → KUL | Jun 24, 10:30 UTC | Jun 24, 17:34 UTC | 7h 5m |
| 2026-06-23 | ETH3605 | - | Jun 23, 14:35 UTC | Jun 24, 07:44 UTC | 17h 10m |
| 2026-06-23 | ETH3605 | - | Jun 23, 11:19 UTC | Jun 24, 07:44 UTC | 20h 25m |
| 2026-06-23 | ETH3604 | LGG → LGG | Jun 23, 09:20 UTC | Jun 24, 07:44 UTC | 22h 25m |
| 2026-06-23 | ETH3604 | LGG → LGG | Jun 23, 09:09 UTC | Jun 24, 07:15 UTC | 22h 5m |
| 2026-06-22 | ETH3702 | - | Jun 22, 11:19 UTC | Jun 23, 06:24 UTC | 19h 5m |
| 2026-06-22 | ETH3702 | - | Jun 22, 09:45 UTC | Jun 23, 06:24 UTC | 20h 40m |
| 2026-06-22 | ETH3656 | - | Jun 22, 01:29 UTC | Jun 22, 04:30 UTC | 3h 0m |
| 2026-06-21 | ETH3656 | - | Jun 21, 07:45 UTC | Jun 22, 04:30 UTC | 20h 45m |
| 2026-06-21 | ETH3219 | HKG → ADD | Jun 21, 07:00 UTC | Jun 21, 07:14 UTC | 15m |
| 2026-06-21 | ETH3784 | - | Jun 21, 03:49 UTC | Jun 21, 04:20 UTC | 30m |
| 2026-06-20 | ETH3784 | - | Jun 20, 15:54 UTC | Jun 20, 19:34 UTC | 3h 40m |
| 2026-06-19 | ETH3785 | - | Jun 19, 19:49 UTC | Jun 20, 10:39 UTC | 14h 50m |
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-ARK page for operator, model, and routing details .