sensors Mode-S transponder
040155
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-AVM · BOEING 737 MAX 8
- Hex
- 040155
- Octal
- 01000525
- Decimal
- 262,485
- Country
- ET
- Tail
- ET-AVM
- Type
- B38M
- Flights observed
- 30
- Distinct callsigns
- 16
- Country
- ET
- Last broadcast
- 21h ago
Last known position
Country allocation
The ICAO 24-bit address 040155 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 16 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| ETH614 | Ethiopian Airlines | 4 | 2026-05-03 |
| ETH615 | Ethiopian Airlines | 3 | 2026-05-04 |
| ETH418 | Ethiopian Airlines | 3 | 2026-05-21 |
| ETH406 | Ethiopian Airlines | 3 | 2026-05-11 |
| ETH723 | Ethiopian Airlines | 2 | 2026-04-30 |
| ETH720 | Ethiopian Airlines | 2 | 2026-05-15 |
| ETH419 | Ethiopian Airlines | 2 | 2026-05-21 |
| ETH415 | Ethiopian Airlines | 2 | 2026-05-23 |
| ETH404 | Ethiopian Airlines | 2 | 2026-05-23 |
| ETH693 | Ethiopian Airlines | 1 | 2026-06-02 |
| ETH692 | Ethiopian Airlines | 1 | 2026-06-02 |
| ETH623 | - | 1 | 2026-04-13 |
| ETH430 | Ethiopian Airlines | 1 | 2026-04-20 |
| ETH422 | Ethiopian Airlines | 1 | 2026-05-05 |
| ETH407 | Ethiopian Airlines | 1 | 2026-05-11 |
| ETH308 | Ethiopian Airlines | 1 | 2026-05-28 |
Recent flights last 30
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | ETH693 | MAA → ADD | Jun 2, 04:35 UTC | Jun 2, 05:10 UTC | 35m |
| 2026-06-02 | ETH692 | ADD → MAA | Jun 2, 01:55 UTC | Jun 2, 02:30 UTC | 35m |
| 2026-05-28 | ETH308 | ADD → NBO | May 28, 22:30 UTC | May 28, 22:40 UTC | 10m |
| 2026-05-23 | ETH415 | TLV → ADD | May 23, 04:50 UTC | May 23, 05:15 UTC | 25m |
| 2026-05-23 | ETH404 | ADD → TLV | May 23, 02:20 UTC | May 23, 02:50 UTC | 29m |
| 2026-05-21 | ETH419 | TLV → ADD | May 21, 12:55 UTC | May 21, 13:20 UTC | 25m |
| 2026-05-21 | ETH418 | ADD → TLV | May 21, 10:50 UTC | May 21, 11:30 UTC | 40m |
| 2026-05-15 | ETH720 | ADD → IST | May 15, 23:45 UTC | May 16, 06:50 UTC | 7h 6m |
| 2026-05-11 | ETH407 | BEY → ADD | May 11, 12:40 UTC | May 11, 13:40 UTC | 1h 0m |
| 2026-05-11 | ETH406 | ADD → BEY | May 11, 10:20 UTC | May 11, 11:15 UTC | 55m |
| 2026-05-10 | ETH415 | TLV → ADD | May 10, 05:00 UTC | May 10, 05:25 UTC | 25m |
| 2026-05-10 | ETH404 | ADD → TLV | May 10, 02:24 UTC | May 10, 03:04 UTC | 40m |
| 2026-05-08 | ETH406 | ADD → BEY | May 8, 10:14 UTC | May 8, 11:19 UTC | 1h 5m |
| 2026-05-07 | ETH406 | ADD → BEY | May 7, 13:20 UTC | May 8, 11:19 UTC | 22h 0m |
| 2026-05-07 | ETH418 | ADD → TLV | May 7, 10:55 UTC | May 7, 11:35 UTC | 40m |
| 2026-05-05 | ETH422 | ADD → DMM | May 5, 22:15 UTC | May 5, 22:35 UTC | 20m |
| 2026-05-04 | ETH615 | AUH → ADD | May 4, 01:15 UTC | May 4, 01:40 UTC | 25m |
| 2026-05-03 | ETH614 | ADD → AUH | May 3, 23:15 UTC | May 3, 23:25 UTC | 10m |
| 2026-05-03 | ETH419 | TLV → ADD | May 3, 13:15 UTC | May 3, 13:40 UTC | 25m |
| 2026-05-02 | ETH418 | ADD → TLV | May 2, 22:30 UTC | May 3, 11:35 UTC | 13h 4m |
| 2026-05-02 | ETH614 | ADD → AUH | May 2, 00:05 UTC | May 2, 22:45 UTC | 22h 40m |
| 2026-04-30 | ETH723 | IST → ADD | Apr 30, 05:30 UTC | Apr 30, 07:10 UTC | 1h 40m |
| 2026-04-29 | ETH720 | ADD → IST | Apr 29, 23:50 UTC | Apr 30, 01:05 UTC | 1h 15m |
| 2026-04-27 | ETH723 | IST → ADD | Apr 27, 23:50 UTC | Apr 28, 07:10 UTC | 7h 20m |
| 2026-04-21 | ETH615 | AUH → ADD | Apr 21, 00:50 UTC | Apr 21, 14:45 UTC | 13h 55m |
| 2026-04-20 | ETH614 | ADD → AUH | Apr 20, 22:30 UTC | Apr 20, 22:55 UTC | 25m |
| 2026-04-20 | ETH430 | ADD → AMM | Apr 20, 10:50 UTC | Apr 20, 11:00 UTC | 10m |
| 2026-04-19 | ETH615 | AUH → ADD | Apr 19, 01:10 UTC | Apr 19, 01:35 UTC | 25m |
| 2026-04-18 | ETH614 | ADD → AUH | Apr 18, 09:05 UTC | Apr 18, 22:50 UTC | 13h 45m |
| 2026-04-13 | ETH623 | - | Apr 13, 00:40 UTC | Apr 13, 01:15 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-AVM page for operator, model, and routing details .