sensors Mode-S transponder
04005C
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-APL · BOEING 737-800
- Hex
- 04005C
- Octal
- 01000134
- Decimal
- 262,236
- Country
- ET
- Tail
- ET-APL
- Type
- B738
- Flights observed
- 20
- Distinct callsigns
- 5
- Country
- ET
- Last broadcast
- 12h ago
Last known position
Country allocation
The ICAO 24-bit address 04005C 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 5 distinct
Recent flights last 20
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-07 | UGD901 | - | Jun 7, 23:05 UTC | Jun 8, 11:50 UTC | 12h 45m |
| 2026-06-07 | UGD712 | - | Jun 7, 07:10 UTC | Jun 7, 21:35 UTC | 14h 25m |
| 2026-06-05 | UGD711 | - | Jun 5, 11:15 UTC | Jun 5, 11:45 UTC | 30m |
| 2026-06-04 | UGD710 | - | Jun 4, 19:15 UTC | Jun 5, 09:25 UTC | 14h 10m |
| 2026-06-03 | UGD711 | - | Jun 3, 11:05 UTC | Jun 3, 11:30 UTC | 25m |
| 2026-06-02 | UGD710 | - | Jun 2, 18:55 UTC | Jun 3, 09:50 UTC | 14h 55m |
| 2026-06-02 | UGD712 | - | Jun 2, 16:45 UTC | Jun 2, 17:25 UTC | 40m |
| 2026-05-31 | UGD901 | - | May 31, 23:00 UTC | Jun 1, 12:50 UTC | 13h 50m |
| 2026-05-31 | UGD901 | - | May 31, 11:35 UTC | May 31, 21:15 UTC | 9h 40m |
| 2026-05-29 | UGD711 | - | May 29, 11:10 UTC | May 29, 11:35 UTC | 25m |
| 2026-05-28 | UGD710 | - | May 28, 15:05 UTC | May 29, 09:45 UTC | 18h 40m |
| 2026-05-27 | UGD711 | - | May 27, 11:15 UTC | May 27, 11:45 UTC | 30m |
| 2026-05-27 | UGD710 | - | May 27, 09:00 UTC | May 27, 09:40 UTC | 40m |
| 2026-05-24 | UGD901 | - | May 24, 23:00 UTC | May 25, 12:35 UTC | 13h 35m |
| 2026-05-24 | UGD712 | - | May 24, 07:10 UTC | May 24, 21:20 UTC | 14h 10m |
| 2026-05-21 | UGD901 | - | May 21, 15:00 UTC | May 21, 19:35 UTC | 4h 35m |
| 2026-05-17 | UGD901 | - | May 17, 23:15 UTC | May 18, 12:10 UTC | 12h 55m |
| 2026-05-17 | UGD901 | - | May 17, 06:55 UTC | May 17, 21:40 UTC | 14h 45m |
| 2026-05-14 | UGD901 | - | May 14, 15:25 UTC | May 14, 20:30 UTC | 5h 5m |
| 2026-04-20 | ETH881 | BEW → ADD | Apr 20, 07:55 UTC | Apr 20, 21:05 UTC | 13h 10m |
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-APL page for operator, model, and routing details .