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
- 77
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 2h 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 | 17 | 2026-05-26 |
| ETH644 | Ethiopian Airlines | 16 | 2026-05-26 |
| ETH858 | Ethiopian Airlines | 5 | 2026-05-29 |
| ETH907 | Ethiopian Airlines | 3 | 2026-05-06 |
| ETH849 | Ethiopian Airlines | 3 | 2026-05-29 |
| ETH955 | Ethiopian Airlines | 2 | 2026-04-30 |
| ETH913 | Ethiopian Airlines | 2 | 2026-05-07 |
| ETH8804 | - | 2 | 2026-04-27 |
| ETH8801 | - | 2 | 2026-04-28 |
| ETH859 | Ethiopian Airlines | 2 | 2026-05-22 |
| ETH688 | Ethiopian Airlines | 2 | 2026-05-01 |
| ETH686 | Ethiopian Airlines | 2 | 2026-05-21 |
| ETH517 | Ethiopian Airlines | 2 | 2026-05-28 |
| ETH513 | Ethiopian Airlines | 2 | 2026-05-12 |
| ETH512 | Ethiopian Airlines | 2 | 2026-05-10 |
| ETH923 | Ethiopian Airlines | 1 | 2026-04-22 |
| ETH8998 | - | 1 | 2026-04-24 |
| ETH8997 | - | 1 | 2026-04-28 |
| ETH848 | Ethiopian Airlines | 1 | 2026-05-23 |
| ETH741 | Ethiopian Airlines | 1 | 2026-05-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | ETH858 | JNB → ADD | May 29, 21:10 UTC | May 30, 16:00 UTC | 18h 50m |
| 2026-05-29 | ETH849 | ADD → JNB | May 29, 06:25 UTC | May 29, 18:15 UTC | 11h 51m |
| 2026-05-28 | ETH517 | LFW → ADD | May 28, 08:45 UTC | May 29, 01:45 UTC | 17h 0m |
| 2026-05-28 | ETH517 | LFW → ADD | May 28, 02:25 UTC | May 29, 01:45 UTC | 23h 20m |
| 2026-05-27 | ETH516 | LFW → IAD | May 27, 22:45 UTC | May 28, 00:25 UTC | 1h 40m |
| 2026-05-26 | ETH645 | HKG → ADD | May 26, 18:24 UTC | May 26, 21:49 UTC | 3h 25m |
| 2026-05-26 | ETH645 | HKG → ADD | May 26, 16:45 UTC | May 26, 16:59 UTC | 15m |
| 2026-05-26 | ETH645 | HKG → ADD | May 26, 13:19 UTC | May 26, 15:00 UTC | 1h 40m |
| 2026-05-26 | ETH644 | HKG → MNL | May 26, 08:50 UTC | May 26, 10:34 UTC | 1h 45m |
| 2026-05-26 | ETH644 | HKG → MNL | May 26, 06:25 UTC | May 26, 07:05 UTC | 40m |
| 2026-05-25 | ETH644 | HKG → MNL | May 25, 14:05 UTC | May 26, 04:20 UTC | 14h 14m |
| 2026-05-23 | ETH858 | JNB → ADD | May 23, 21:15 UTC | May 24, 00:30 UTC | 3h 15m |
| 2026-05-23 | ETH848 | JNB → ADD | May 23, 06:25 UTC | May 23, 18:00 UTC | 11h 35m |
| 2026-05-22 | ETH859 | ADD → JNB | May 22, 10:55 UTC | May 23, 02:05 UTC | 15h 10m |
| 2026-05-21 | ETH858 | JNB → ADD | May 21, 20:50 UTC | May 22, 11:15 UTC | 14h 25m |
| 2026-05-21 | ETH689 | DEL → ADD | May 21, 04:10 UTC | May 21, 18:05 UTC | 13h 55m |
| 2026-05-21 | ETH686 | ADD → DEL | May 21, 01:25 UTC | May 21, 02:10 UTC | 45m |
| 2026-05-20 | ETH686 | ADD → DEL | May 20, 07:50 UTC | May 21, 02:10 UTC | 18h 20m |
| 2026-05-19 | ETH741 | MAD → ADD | May 19, 20:35 UTC | May 20, 07:50 UTC | 11h 16m |
| 2026-05-18 | ETH740 | ADD → MAD | May 18, 14:55 UTC | May 19, 04:15 UTC | 13h 19m |
| 2026-05-15 | ETH681 | - | May 15, 08:35 UTC | May 15, 09:30 UTC | 55m |
| 2026-05-15 | ETH680 | - | May 15, 02:25 UTC | May 15, 03:25 UTC | 1h 0m |
| 2026-05-13 | ETH645 | HKG → ADD | May 13, 18:25 UTC | May 13, 21:50 UTC | 3h 25m |
| 2026-05-13 | ETH645 | HKG → ADD | May 13, 16:45 UTC | May 13, 16:55 UTC | 10m |
| 2026-05-13 | ETH645 | HKG → ADD | May 13, 13:31 UTC | May 13, 15:15 UTC | 1h 45m |
| 2026-05-13 | ETH644 | HKG → MNL | May 13, 08:30 UTC | May 13, 10:20 UTC | 1h 50m |
| 2026-05-13 | ETH644 | HKG → MNL | May 13, 06:20 UTC | May 13, 06:50 UTC | 30m |
| 2026-05-12 | ETH644 | HKG → MNL | May 12, 10:05 UTC | May 13, 04:20 UTC | 18h 15m |
| 2026-05-12 | ETH513 | JFK → ABJ | May 12, 09:15 UTC | May 13, 04:20 UTC | 19h 5m |
| 2026-05-12 | ETH513 | JFK → ABJ | May 12, 03:10 UTC | May 12, 15:30 UTC | 12h 20m |
| 2026-05-10 | ETH512 | LFW → JFK | May 10, 22:05 UTC | May 11, 16:50 UTC | 18h 45m |
| 2026-05-10 | ETH512 | LFW → JFK | May 10, 21:35 UTC | May 11, 16:50 UTC | 19h 15m |
| 2026-05-10 | ETH645 | HKG → ADD | May 10, 18:39 UTC | May 11, 16:50 UTC | 22h 10m |
| 2026-05-10 | ETH645 | HKG → ADD | May 10, 16:59 UTC | May 10, 17:10 UTC | 10m |
| 2026-05-10 | ETH645 | HKG → ADD | May 10, 13:49 UTC | May 10, 15:29 UTC | 1h 40m |
| 2026-05-10 | ETH644 | HKG → MNL | May 10, 08:25 UTC | May 10, 10:10 UTC | 1h 45m |
| 2026-05-10 | ETH644 | HKG → MNL | May 10, 06:10 UTC | May 10, 06:35 UTC | 25m |
| 2026-05-09 | ETH644 | HKG → MNL | May 9, 14:10 UTC | May 10, 04:15 UTC | 14h 5m |
| 2026-05-07 | ETH913 | ADD → ADD | May 7, 13:40 UTC | May 7, 14:05 UTC | 25m |
| 2026-05-07 | ETH913 | ADD → ADD | May 7, 10:05 UTC | May 7, 10:35 UTC | 30m |
| 2026-05-06 | ETH907 | BKO → DSS | May 6, 08:15 UTC | May 6, 08:50 UTC | 35m |
| 2026-05-06 | ETH907 | BKO → DSS | May 6, 05:20 UTC | May 6, 06:05 UTC | 45m |
| 2026-05-04 | ETH645 | HKG → ADD | May 4, 19:00 UTC | May 4, 22:25 UTC | 3h 25m |
| 2026-05-04 | ETH645 | HKG → ADD | May 4, 17:15 UTC | May 4, 17:25 UTC | 10m |
| 2026-05-04 | ETH645 | HKG → ADD | May 4, 15:25 UTC | May 4, 15:45 UTC | 20m |
| 2026-05-04 | ETH645 | HKG → ADD | May 4, 13:55 UTC | May 4, 14:25 UTC | 30m |
| 2026-05-04 | ETH644 | HKG → MNL | May 4, 09:05 UTC | May 4, 11:00 UTC | 1h 55m |
| 2026-05-04 | ETH644 | HKG → MNL | May 4, 07:00 UTC | May 4, 07:25 UTC | 25m |
| 2026-05-04 | ETH644 | HKG → MNL | May 4, 02:04 UTC | May 4, 04:50 UTC | 2h 45m |
| 2026-05-01 | ETH687 | DEL → ADD | May 1, 21:25 UTC | May 1, 23:20 UTC | 1h 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 .