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
- 75
- Distinct callsigns
- 20
- Country
- ET
- Last broadcast
- 15h 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SKK076 | - | 10 | 2026-07-01 |
| SKK070 | - | 7 | 2026-07-12 |
| SKK077 | - | 6 | 2026-07-02 |
| SKK071 | - | 5 | 2026-07-13 |
| SKK055 | Skylink Aviation | 5 | 2026-06-08 |
| SKK051 | - | 5 | 2026-06-21 |
| SKK075 | Skylink Aviation | 4 | 2026-06-04 |
| SKK074 | Skylink Aviation | 4 | 2026-06-03 |
| SKK054 | - | 4 | 2026-06-07 |
| SKK050 | Skylink Aviation | 4 | 2026-06-06 |
| SKK015 | - | 3 | 2026-07-16 |
| SKK079 | - | 2 | 2026-07-14 |
| SKK069 | Skylink Aviation | 2 | 2026-05-01 |
| SKK065 | - | 2 | 2026-07-04 |
| SKK064 | - | 2 | 2026-07-03 |
| SKK053 | - | 2 | 2026-06-20 |
| SKK052 | - | 2 | 2026-06-19 |
| SKK034 | Skylink Aviation | 2 | 2026-06-10 |
| SKK035 | Skylink Aviation | 1 | 2026-06-22 |
| SKK014 | Skylink Aviation | 1 | 2026-05-07 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-16 | SKK015 | - | Jul 16, 17:05 UTC | Jul 17, 08:10 UTC | 15h 5m |
| 2026-07-14 | SKK079 | - | Jul 14, 09:50 UTC | Jul 14, 10:10 UTC | 20m |
| 2026-07-13 | SKK071 | - | Jul 13, 03:45 UTC | Jul 13, 14:50 UTC | 11h 5m |
| 2026-07-12 | SKK070 | - | Jul 12, 07:40 UTC | Jul 12, 21:45 UTC | 14h 5m |
| 2026-07-08 | SKK071 | - | Jul 8, 03:45 UTC | Jul 8, 04:15 UTC | 30m |
| 2026-07-07 | SKK070 | FIH → JNB | Jul 7, 21:10 UTC | Jul 7, 21:45 UTC | 35m |
| 2026-07-06 | SKK071 | - | Jul 6, 03:00 UTC | Jul 6, 03:30 UTC | 30m |
| 2026-07-05 | SKK070 | FIH → JNB | Jul 5, 23:05 UTC | Jul 5, 23:40 UTC | 35m |
| 2026-07-04 | SKK065 | - | Jul 4, 09:35 UTC | Jul 4, 09:55 UTC | 20m |
| 2026-07-04 | SKK065 | - | Jul 4, 07:20 UTC | Jul 4, 07:35 UTC | 15m |
| 2026-07-03 | SKK064 | NSI → NSI | Jul 3, 16:15 UTC | Jul 3, 16:20 UTC | 5m |
| 2026-07-03 | SKK064 | - | Jul 3, 14:55 UTC | Jul 3, 15:25 UTC | 30m |
| 2026-07-02 | SKK077 | - | Jul 2, 08:30 UTC | Jul 2, 09:05 UTC | 35m |
| 2026-07-01 | SKK076 | - | Jul 1, 17:15 UTC | Jul 2, 06:51 UTC | 13h 36m |
| 2026-07-01 | SKK076 | - | Jul 1, 15:35 UTC | Jul 1, 16:15 UTC | 40m |
| 2026-06-25 | SKK015 | - | Jun 25, 17:09 UTC | Jun 26, 08:45 UTC | 15h 35m |
| 2026-06-22 | SKK035 | DLA → LFW | Jun 22, 08:00 UTC | Jun 22, 08:29 UTC | 30m |
| 2026-06-21 | SKK051 | - | Jun 21, 06:50 UTC | Jun 21, 07:25 UTC | 35m |
| 2026-06-20 | SKK053 | - | Jun 20, 08:25 UTC | Jun 20, 17:59 UTC | 9h 35m |
| 2026-06-20 | SKK053 | - | Jun 20, 06:54 UTC | Jun 20, 07:24 UTC | 30m |
| 2026-06-19 | SKK052 | - | Jun 19, 17:14 UTC | Jun 19, 17:44 UTC | 30m |
| 2026-06-19 | SKK052 | - | Jun 19, 15:29 UTC | Jun 19, 16:04 UTC | 35m |
| 2026-06-17 | SKK071 | - | Jun 17, 03:35 UTC | Jun 17, 04:10 UTC | 35m |
| 2026-06-16 | SKK070 | FIH → JNB | Jun 16, 20:55 UTC | Jun 16, 21:30 UTC | 35m |
| 2026-06-13 | SKK077 | - | Jun 13, 08:25 UTC | Jun 13, 09:00 UTC | 35m |
| 2026-06-12 | SKK076 | - | Jun 12, 18:15 UTC | Jun 13, 06:50 UTC | 12h 34m |
| 2026-06-12 | SKK076 | - | Jun 12, 04:00 UTC | Jun 12, 16:40 UTC | 12h 40m |
| 2026-06-11 | SKK070 | FIH → JNB | Jun 11, 20:55 UTC | Jun 11, 21:40 UTC | 45m |
| 2026-06-10 | SKK034 | LFW → DLA | Jun 10, 16:40 UTC | Jun 10, 17:05 UTC | 25m |
| 2026-06-08 | SKK055 | RAI → DSS | Jun 8, 08:30 UTC | Jun 8, 09:05 UTC | 35m |
| 2026-06-08 | SKK055 | RAI → DSS | Jun 8, 06:35 UTC | Jun 8, 07:20 UTC | 45m |
| 2026-06-07 | SKK054 | - | Jun 7, 17:25 UTC | Jun 7, 17:55 UTC | 30m |
| 2026-06-07 | SKK051 | DSS → COO | Jun 7, 06:50 UTC | Jun 7, 16:25 UTC | 9h 35m |
| 2026-06-06 | SKK050 | LFW → DSS | Jun 6, 17:34 UTC | Jun 6, 18:09 UTC | 35m |
| 2026-06-04 | SKK075 | LBV → LFW | Jun 4, 03:30 UTC | Jun 4, 04:00 UTC | 30m |
| 2026-06-03 | SKK074 | LBV → JNB | Jun 3, 21:00 UTC | Jun 3, 21:40 UTC | 40m |
| 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 |
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 .