sensors Mode-S transponder
040228
ICAO 24-bit transponder address · allocated to Ethiopia
Currently assigned to ET-AZY · BOEING 737-800
- Hex
- 040228
- Octal
- 01001050
- Decimal
- 262,696
- Country
- ET
- Tail
- ET-AZY
- Type
- B738
- Flights observed
- 39
- Distinct callsigns
- 17
- Country
- ET
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 040228 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SKK076 | - | 6 | 2026-05-22 |
| SKK077 | - | 4 | 2026-05-24 |
| SKK075 | Skylink Aviation | 3 | 2026-05-21 |
| SKK074 | Skylink Aviation | 3 | 2026-05-20 |
| SKK055 | Skylink Aviation | 3 | 2026-06-01 |
| SKK054 | - | 3 | 2026-05-31 |
| SKK051 | Skylink Aviation | 3 | 2026-05-27 |
| SKK050 | Skylink Aviation | 3 | 2026-05-31 |
| SKK070 | Skylink Aviation | 2 | 2026-05-30 |
| SKK069 | Skylink Aviation | 2 | 2026-05-01 |
| SKK079 | Skylink Aviation | 1 | 2026-05-02 |
| SKK071 | Skylink Aviation | 1 | 2026-05-10 |
| SKK034 | - | 1 | 2026-05-29 |
| SKK015 | Skylink Aviation | 1 | 2026-05-07 |
| SKK014 | Skylink Aviation | 1 | 2026-05-07 |
| SKK011 | Skylink Aviation | 1 | 2026-05-15 |
| SKK010 | Skylink Aviation | 1 | 2026-05-14 |
Recent flights last 39
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | SKK055 | RAI → DSS | Jun 1, 09:55 UTC | Jun 1, 10:25 UTC | 30m |
| 2026-06-01 | SKK055 | RAI → DSS | Jun 1, 07:30 UTC | Jun 1, 08:15 UTC | 45m |
| 2026-05-31 | SKK054 | - | May 31, 18:55 UTC | May 31, 19:25 UTC | 30m |
| 2026-05-31 | SKK050 | LFW → DSS | May 31, 16:25 UTC | May 31, 17:10 UTC | 45m |
| 2026-05-30 | SKK070 | FIH → JNB | May 30, 21:05 UTC | May 30, 21:40 UTC | 35m |
| 2026-05-29 | SKK034 | - | May 29, 16:00 UTC | May 30, 08:20 UTC | 16h 20m |
| 2026-05-27 | SKK051 | DSS → COO | May 27, 06:29 UTC | May 27, 07:10 UTC | 40m |
| 2026-05-26 | SKK050 | LFW → DSS | May 26, 17:59 UTC | May 26, 18:40 UTC | 40m |
| 2026-05-24 | SKK077 | - | May 24, 14:45 UTC | May 24, 15:15 UTC | 30m |
| 2026-05-22 | SKK076 | - | May 22, 18:30 UTC | May 23, 07:30 UTC | 13h 0m |
| 2026-05-22 | SKK076 | - | May 22, 16:35 UTC | May 22, 17:15 UTC | 40m |
| 2026-05-21 | SKK075 | LBV → LFW | May 21, 03:45 UTC | May 21, 04:20 UTC | 35m |
| 2026-05-20 | SKK074 | LBV → JNB | May 20, 09:05 UTC | May 20, 21:55 UTC | 12h 50m |
| 2026-05-20 | SKK055 | RAI → DSS | May 20, 06:35 UTC | May 20, 07:40 UTC | 1h 5m |
| 2026-05-19 | SKK054 | - | May 19, 17:50 UTC | May 19, 18:25 UTC | 35m |
| 2026-05-19 | SKK054 | - | May 19, 16:05 UTC | May 19, 16:45 UTC | 40m |
| 2026-05-18 | SKK075 | LBV → LFW | May 18, 03:35 UTC | May 18, 10:30 UTC | 6h 55m |
| 2026-05-17 | SKK074 | LBV → JNB | May 17, 21:35 UTC | May 17, 22:15 UTC | 40m |
| 2026-05-15 | SKK011 | ABJ → LFW | May 15, 06:30 UTC | May 15, 07:10 UTC | 40m |
| 2026-05-14 | SKK010 | LFW → ABJ | May 14, 17:35 UTC | May 14, 18:40 UTC | 1h 5m |
| 2026-05-11 | SKK051 | DSS → COO | May 11, 09:55 UTC | May 11, 10:25 UTC | 30m |
| 2026-05-10 | SKK071 | FIH → LFW | May 10, 03:45 UTC | May 10, 16:59 UTC | 13h 15m |
| 2026-05-09 | SKK070 | FIH → JNB | May 9, 21:25 UTC | May 9, 22:00 UTC | 35m |
| 2026-05-07 | SKK015 | NKC → CKY | May 7, 18:20 UTC | May 8, 08:14 UTC | 13h 55m |
| 2026-05-07 | SKK014 | CKY → NKC | May 7, 09:10 UTC | May 8, 07:59 UTC | 22h 49m |
| 2026-05-07 | SKK077 | - | May 7, 06:25 UTC | May 7, 06:40 UTC | 15m |
| 2026-05-06 | SKK076 | - | May 6, 17:45 UTC | May 6, 18:15 UTC | 30m |
| 2026-05-06 | SKK076 | - | May 6, 15:55 UTC | May 6, 16:30 UTC | 35m |
| 2026-05-02 | SKK079 | NBO → LFW | May 2, 11:10 UTC | May 2, 11:20 UTC | 10m |
| 2026-05-01 | SKK069 | SSG → LFW | May 1, 07:45 UTC | May 1, 08:05 UTC | 20m |
| 2026-04-30 | SKK051 | DSS → COO | Apr 30, 09:40 UTC | Apr 30, 17:35 UTC | 7h 55m |
| 2026-04-29 | SKK050 | LFW → DSS | Apr 29, 16:25 UTC | Apr 29, 17:05 UTC | 40m |
| 2026-04-26 | SKK069 | SSG → LFW | Apr 26, 07:10 UTC | Apr 26, 07:30 UTC | 20m |
| 2026-04-18 | SKK077 | - | Apr 18, 08:05 UTC | Apr 18, 08:30 UTC | 25m |
| 2026-04-18 | SKK077 | - | Apr 18, 06:20 UTC | Apr 18, 06:50 UTC | 30m |
| 2026-04-17 | SKK076 | - | Apr 17, 17:40 UTC | Apr 17, 18:10 UTC | 30m |
| 2026-04-17 | SKK076 | - | Apr 17, 15:40 UTC | Apr 17, 16:20 UTC | 40m |
| 2026-04-16 | SKK075 | LBV → LFW | Apr 16, 03:34 UTC | Apr 16, 04:04 UTC | 30m |
| 2026-04-15 | SKK074 | LBV → JNB | Apr 15, 21:10 UTC | Apr 15, 21:50 UTC | 40m |
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-AZY page for operator, model, and routing details .