sensors Mode-S transponder
040234
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-BAK · BOEING 737 MAX 8
- Hex
- 040234
- Octal
- 01001064
- Decimal
- 262,708
- Country
- ET
- Tail
- ET-BAK
- Type
- B38M
- Flights observed
- 40
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 18h ago
Last known position
Country allocation
The ICAO 24-bit address 040234 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 |
|---|---|---|---|
| ETH308 | - | 6 | 2026-07-13 |
| ETH415 | - | 4 | 2026-07-17 |
| ETH404 | - | 4 | 2026-07-17 |
| ETH867 | - | 3 | 2026-07-15 |
| ETH414 | Ethiopian Airlines | 3 | 2026-06-25 |
| ETH428 | Ethiopian Airlines | 2 | 2026-07-17 |
| ETH419 | - | 2 | 2026-07-02 |
| ETH418 | - | 2 | 2026-07-02 |
| ETH405 | Ethiopian Airlines | 2 | 2026-06-25 |
| ETH930 | Ethiopian Airlines | 1 | 2026-04-29 |
| ETH904 | Ethiopian Airlines | 1 | 2026-04-25 |
| ETH691 | - | 1 | 2026-04-13 |
| ETH690 | - | 1 | 2026-04-13 |
| ETH688 | Ethiopian Airlines | 1 | 2026-04-18 |
| ETH687 | Ethiopian Airlines | 1 | 2026-04-18 |
| ETH683 | Ethiopian Airlines | 1 | 2026-05-01 |
| ETH431 | - | 1 | 2026-06-20 |
| ETH430 | - | 1 | 2026-06-20 |
| ETH429 | - | 1 | 2026-07-18 |
| ETH425 | - | 1 | 2026-07-12 |
Recent flights last 40
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-18 | ETH429 | - | Jul 18, 01:15 UTC | Jul 18, 01:30 UTC | 15m |
| 2026-07-17 | ETH428 | ADD → AMM | Jul 17, 23:35 UTC | Jul 18, 00:00 UTC | 25m |
| 2026-07-17 | ETH415 | - | Jul 17, 05:10 UTC | Jul 17, 05:39 UTC | 30m |
| 2026-07-17 | ETH404 | - | Jul 17, 02:30 UTC | Jul 17, 02:54 UTC | 25m |
| 2026-07-15 | ETH867 | - | Jul 15, 15:20 UTC | Jul 15, 17:30 UTC | 2h 10m |
| 2026-07-13 | ETH308 | - | Jul 13, 22:40 UTC | Jul 13, 22:50 UTC | 10m |
| 2026-07-12 | ETH425 | - | Jul 12, 00:50 UTC | Jul 12, 01:00 UTC | 10m |
| 2026-07-11 | ETH424 | - | Jul 11, 22:55 UTC | Jul 11, 23:25 UTC | 30m |
| 2026-07-09 | ETH867 | - | Jul 9, 14:50 UTC | Jul 9, 17:15 UTC | 2h 25m |
| 2026-07-05 | ETH415 | - | Jul 5, 05:20 UTC | Jul 5, 05:45 UTC | 25m |
| 2026-07-05 | ETH404 | - | Jul 5, 02:20 UTC | Jul 5, 02:55 UTC | 35m |
| 2026-07-02 | ETH419 | - | Jul 2, 12:55 UTC | Jul 2, 13:20 UTC | 25m |
| 2026-07-02 | ETH418 | - | Jul 2, 10:50 UTC | Jul 2, 11:20 UTC | 30m |
| 2026-06-27 | ETH867 | ADD → JRO | Jun 27, 14:35 UTC | Jun 27, 16:55 UTC | 2h 20m |
| 2026-06-25 | ETH405 | TLV → ADD | Jun 25, 22:29 UTC | Jun 25, 22:54 UTC | 25m |
| 2026-06-25 | ETH414 | ADD → TLV | Jun 25, 19:29 UTC | Jun 25, 19:54 UTC | 25m |
| 2026-06-23 | ETH419 | - | Jun 23, 13:00 UTC | Jun 23, 13:24 UTC | 25m |
| 2026-06-23 | ETH418 | - | Jun 23, 10:39 UTC | Jun 23, 11:14 UTC | 35m |
| 2026-06-20 | ETH431 | - | Jun 20, 12:59 UTC | Jun 20, 13:14 UTC | 15m |
| 2026-06-20 | ETH430 | - | Jun 20, 10:34 UTC | Jun 20, 10:55 UTC | 20m |
| 2026-06-19 | ETH415 | - | Jun 19, 05:45 UTC | Jun 19, 06:10 UTC | 25m |
| 2026-06-19 | ETH404 | ADD → TLV | Jun 19, 02:24 UTC | Jun 19, 02:59 UTC | 35m |
| 2026-06-18 | ETH415 | - | Jun 18, 05:05 UTC | Jun 18, 05:30 UTC | 25m |
| 2026-06-18 | ETH404 | ADD → TLV | Jun 18, 02:20 UTC | Jun 18, 02:55 UTC | 35m |
| 2026-06-16 | ETH405 | TLV → ADD | Jun 16, 22:20 UTC | Jun 16, 22:50 UTC | 30m |
| 2026-06-16 | ETH414 | ADD → TLV | Jun 16, 19:35 UTC | Jun 16, 20:05 UTC | 31m |
| 2026-06-16 | ETH414 | ADD → TLV | Jun 16, 00:20 UTC | Jun 16, 20:05 UTC | 19h 46m |
| 2026-06-15 | ETH428 | ADD → AMM | Jun 15, 22:40 UTC | Jun 15, 22:54 UTC | 15m |
| 2026-05-27 | ETH308 | ADD → NBO | May 27, 22:35 UTC | May 27, 22:45 UTC | 10m |
| 2026-05-22 | ETH308 | ADD → NBO | May 22, 22:20 UTC | May 22, 22:30 UTC | 10m |
| 2026-05-19 | ETH308 | ADD → NBO | May 19, 22:30 UTC | May 19, 22:40 UTC | 10m |
| 2026-05-06 | ETH308 | ADD → NBO | May 6, 22:35 UTC | May 6, 22:45 UTC | 10m |
| 2026-05-05 | ETH308 | ADD → NBO | May 5, 22:30 UTC | May 5, 22:40 UTC | 10m |
| 2026-05-01 | ETH683 | HYD → ADD | May 1, 18:15 UTC | May 1, 22:20 UTC | 4h 5m |
| 2026-04-29 | ETH930 | ENU → ADD | Apr 29, 13:25 UTC | Apr 29, 21:45 UTC | 8h 20m |
| 2026-04-25 | ETH904 | LOS → ADD | Apr 25, 02:15 UTC | Apr 25, 06:25 UTC | 4h 10m |
| 2026-04-18 | ETH687 | DEL → ADD | Apr 18, 21:35 UTC | Apr 18, 22:05 UTC | 30m |
| 2026-04-18 | ETH688 | ADD → DEL | Apr 18, 18:35 UTC | Apr 18, 19:25 UTC | 50m |
| 2026-04-13 | ETH691 | - | Apr 13, 11:10 UTC | Apr 13, 11:30 UTC | 20m |
| 2026-04-13 | ETH690 | - | Apr 13, 01:25 UTC | Apr 13, 01:50 UTC | 25m |
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-BAK page for operator, model, and routing details .