sensors Mode-S transponder
040088
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-ARF · BOEING 787-8 Dreamliner
- Hex
- 040088
- Octal
- 01000210
- Decimal
- 262,280
- Country
- ET
- Tail
- ET-ARF
- Type
- B788
- Flights observed
- 146
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 040088 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 | 21 | 2026-06-05 |
| ETH644 | Ethiopian Airlines | 19 | 2026-06-05 |
| ETH575 | Ethiopian Airlines | 13 | 2026-06-27 |
| ETH574 | - | 8 | 2026-06-27 |
| ETH516 | - | 8 | 2026-06-29 |
| ETH517 | - | 6 | 2026-06-30 |
| ETH858 | Ethiopian Airlines | 4 | 2026-05-23 |
| ETH686 | Ethiopian Airlines | 4 | 2026-06-09 |
| ETH512 | - | 4 | 2026-06-15 |
| ETH907 | Ethiopian Airlines | 3 | 2026-05-06 |
| ETH8801 | - | 3 | 2026-07-14 |
| ETH849 | Ethiopian Airlines | 3 | 2026-05-29 |
| ETH728 | - | 3 | 2026-06-17 |
| ETH689 | Ethiopian Airlines | 3 | 2026-06-09 |
| ETH518 | - | 3 | 2026-06-21 |
| ETH513 | - | 3 | 2026-06-16 |
| ETH955 | Ethiopian Airlines | 2 | 2026-04-30 |
| ETH913 | Ethiopian Airlines | 2 | 2026-05-07 |
| ETH8804 | - | 2 | 2026-04-27 |
| ETH859 | Ethiopian Airlines | 2 | 2026-05-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | ETH8899 | - | Jul 14, 12:30 UTC | Jul 14, 13:30 UTC | 1h 0m |
| 2026-07-14 | ETH8801 | - | Jul 14, 03:30 UTC | Jul 14, 09:45 UTC | 6h 15m |
| 2026-07-13 | ETH8802 | - | Jul 13, 18:45 UTC | Jul 14, 01:45 UTC | 7h 0m |
| 2026-07-13 | ETH8999 | - | Jul 13, 15:20 UTC | Jul 13, 16:30 UTC | 1h 10m |
| 2026-07-02 | ETH719 | - | Jul 2, 09:50 UTC | Jul 2, 13:35 UTC | 3h 45m |
| 2026-07-02 | ETH718 | - | Jul 2, 00:50 UTC | Jul 2, 05:05 UTC | 4h 15m |
| 2026-06-30 | ETH517 | - | Jun 30, 02:00 UTC | Jun 30, 09:30 UTC | 7h 30m |
| 2026-06-29 | ETH516 | - | Jun 29, 15:09 UTC | Jun 29, 23:49 UTC | 8h 40m |
| 2026-06-28 | ETH516 | - | Jun 28, 18:49 UTC | Jun 29, 16:10 UTC | 21h 20m |
| 2026-06-27 | ETH575 | ORD → ADD | Jun 27, 22:04 UTC | Jun 28, 17:10 UTC | 19h 5m |
| 2026-06-27 | ETH575 | ORD → ADD | Jun 27, 21:15 UTC | Jun 28, 17:10 UTC | 19h 55m |
| 2026-06-27 | ETH575 | ORD → ADD | Jun 27, 15:30 UTC | Jun 28, 00:59 UTC | 9h 30m |
| 2026-06-27 | ETH574 | - | Jun 27, 03:09 UTC | Jun 27, 12:29 UTC | 9h 20m |
| 2026-06-26 | ETH574 | - | Jun 26, 23:44 UTC | Jun 27, 01:35 UTC | 1h 50m |
| 2026-06-25 | ETH906 | DSS → BKO | Jun 25, 18:59 UTC | Jun 25, 19:29 UTC | 30m |
| 2026-06-24 | ETH575 | ORD → ADD | Jun 24, 22:04 UTC | Jun 25, 16:59 UTC | 18h 55m |
| 2026-06-24 | ETH575 | ORD → ADD | Jun 24, 21:44 UTC | Jun 25, 16:59 UTC | 19h 15m |
| 2026-06-24 | ETH575 | ORD → ADD | Jun 24, 18:05 UTC | Jun 25, 16:59 UTC | 22h 55m |
| 2026-06-24 | ETH575 | ORD → ADD | Jun 24, 16:05 UTC | Jun 25, 02:45 UTC | 10h 40m |
| 2026-06-24 | ETH574 | - | Jun 24, 03:04 UTC | Jun 24, 12:25 UTC | 9h 20m |
| 2026-06-23 | ETH574 | - | Jun 23, 23:44 UTC | Jun 24, 01:34 UTC | 1h 50m |
| 2026-06-21 | ETH519 | - | Jun 21, 15:09 UTC | Jun 22, 01:05 UTC | 9h 55m |
| 2026-06-21 | ETH518 | - | Jun 21, 10:09 UTC | Jun 21, 12:40 UTC | 2h 30m |
| 2026-06-21 | ETH518 | - | Jun 21, 02:50 UTC | Jun 21, 10:04 UTC | 7h 15m |
| 2026-06-20 | ETH518 | - | Jun 20, 22:39 UTC | Jun 21, 01:14 UTC | 2h 35m |
| 2026-06-19 | ETH575 | ORD → ADD | Jun 19, 15:34 UTC | Jun 20, 01:14 UTC | 9h 40m |
| 2026-06-19 | ETH574 | FCO → ORD | Jun 19, 03:20 UTC | Jun 19, 12:29 UTC | 9h 10m |
| 2026-06-18 | ETH574 | - | Jun 18, 23:35 UTC | Jun 19, 01:29 UTC | 1h 54m |
| 2026-06-17 | ETH729 | - | Jun 17, 20:35 UTC | Jun 17, 23:00 UTC | 2h 25m |
| 2026-06-17 | ETH729 | - | Jun 17, 17:45 UTC | Jun 17, 19:15 UTC | 1h 30m |
| 2026-06-17 | ETH728 | GVA → MAN | Jun 17, 05:30 UTC | Jun 17, 07:00 UTC | 1h 30m |
| 2026-06-17 | ETH728 | - | Jun 17, 00:30 UTC | Jun 17, 04:10 UTC | 3h 40m |
| 2026-06-16 | ETH728 | - | Jun 16, 09:00 UTC | Jun 17, 04:10 UTC | 19h 11m |
| 2026-06-16 | ETH513 | - | Jun 16, 02:54 UTC | Jun 17, 02:00 UTC | 23h 6m |
| 2026-06-15 | ETH512 | - | Jun 15, 15:50 UTC | Jun 16, 00:05 UTC | 8h 15m |
| 2026-06-15 | ETH512 | - | Jun 15, 00:05 UTC | Jun 16, 00:00 UTC | 23h 55m |
| 2026-06-14 | ETH575 | ORD → ADD | Jun 14, 22:05 UTC | Jun 15, 16:40 UTC | 18h 35m |
| 2026-06-14 | ETH575 | ORD → ADD | Jun 14, 21:25 UTC | Jun 15, 16:40 UTC | 19h 14m |
| 2026-06-14 | ETH575 | ORD → ADD | Jun 14, 18:05 UTC | Jun 15, 16:40 UTC | 22h 34m |
| 2026-06-14 | ETH575 | ORD → ADD | Jun 14, 16:05 UTC | Jun 15, 15:59 UTC | 23h 55m |
| 2026-06-14 | ETH575 | ORD → ADD | Jun 14, 15:40 UTC | Jun 15, 01:00 UTC | 9h 20m |
| 2026-06-14 | ETH574 | - | Jun 14, 03:15 UTC | Jun 14, 12:35 UTC | 9h 21m |
| 2026-06-13 | ETH574 | - | Jun 13, 11:25 UTC | Jun 14, 01:45 UTC | 14h 20m |
| 2026-06-12 | ETH713 | FCO → ADD | Jun 12, 21:15 UTC | Jun 13, 11:50 UTC | 14h 34m |
| 2026-06-11 | ETH712 | ADD → FCO | Jun 11, 09:30 UTC | Jun 12, 03:10 UTC | 17h 41m |
| 2026-06-11 | ETH517 | LFW → ADD | Jun 11, 02:40 UTC | Jun 12, 02:00 UTC | 23h 20m |
| 2026-06-10 | ETH516 | LFW → IAD | Jun 10, 15:05 UTC | Jun 11, 00:30 UTC | 9h 25m |
| 2026-06-09 | ETH687 | DEL → ADD | Jun 9, 21:35 UTC | Jun 10, 15:55 UTC | 18h 20m |
| 2026-06-09 | ETH689 | DEL → ADD | Jun 9, 04:20 UTC | Jun 9, 19:35 UTC | 15h 15m |
| 2026-06-09 | ETH686 | ADD → DEL | Jun 9, 01:35 UTC | Jun 9, 02:30 UTC | 55m |
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-ARF page for operator, model, and routing details .