Apparatus

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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
No current signal · last broadcast Jul 26, 18:25 UTC
Flights observed
85
Distinct callsigns
20
Country
ET
Last broadcast
Jul 26, 18:25 UTC

Last known position

Most recent position reported by Mode-S 040228.

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 - 12 2026-07-24
SKK077 - 7 2026-07-25
SKK070 - 7 2026-07-12
SKK051 - 6 2026-07-19
SKK071 - 5 2026-07-13
SKK055 Skylink Aviation 5 2026-06-08
SKK050 Skylink Aviation 5 2026-07-18
SKK075 Skylink Aviation 4 2026-06-04
SKK074 Skylink Aviation 4 2026-06-03
SKK054 - 4 2026-06-07
SKK034 - 3 2026-07-19
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
SKK078 Skylink Aviation 1 2026-07-26
SKK068 - 1 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKK078 LFW → NBO Jul 26, 18:05 UTCJul 26, 18:25 UTC20m
2026-07-25 SKK077 - Jul 25, 08:15 UTCJul 25, 08:40 UTC25m
2026-07-24 SKK076 - Jul 24, 17:30 UTCJul 25, 07:05 UTC13h 35m
2026-07-24 SKK076 - Jul 24, 15:45 UTCJul 24, 16:20 UTC35m
2026-07-23 SKK067 BGF → NSI Jul 23, 16:40 UTCJul 24, 08:40 UTC16h 0m
2026-07-23 SKK066 LFW → NSI Jul 23, 15:15 UTCJul 23, 15:45 UTC30m
2026-07-21 SKK068 - Jul 21, 10:00 UTCJul 21, 17:25 UTC7h 25m
2026-07-19 SKK034 - Jul 19, 17:10 UTCJul 20, 08:25 UTC15h 15m
2026-07-19 SKK051 - Jul 19, 09:45 UTCJul 19, 10:15 UTC30m
2026-07-18 SKK050 LFW → DSS Jul 18, 17:15 UTCJul 18, 18:00 UTC45m
2026-07-16 SKK015 - Jul 16, 17:05 UTCJul 17, 08:10 UTC15h 5m
2026-07-14 SKK079 - Jul 14, 09:50 UTCJul 14, 10:10 UTC20m
2026-07-13 SKK071 - Jul 13, 03:45 UTCJul 13, 14:50 UTC11h 5m
2026-07-12 SKK070 - Jul 12, 07:40 UTCJul 12, 21:45 UTC14h 5m
2026-07-08 SKK071 - Jul 8, 03:45 UTCJul 8, 04:15 UTC30m
2026-07-07 SKK070 FIH → JNB Jul 7, 21:10 UTCJul 7, 21:45 UTC35m
2026-07-06 SKK071 - Jul 6, 03:00 UTCJul 6, 03:30 UTC30m
2026-07-05 SKK070 FIH → JNB Jul 5, 23:05 UTCJul 5, 23:40 UTC35m
2026-07-04 SKK065 - Jul 4, 09:35 UTCJul 4, 09:55 UTC20m
2026-07-04 SKK065 - Jul 4, 07:20 UTCJul 4, 07:35 UTC15m
2026-07-03 SKK064 NSI → NSI Jul 3, 16:15 UTCJul 3, 16:20 UTC5m
2026-07-03 SKK064 - Jul 3, 14:55 UTCJul 3, 15:25 UTC30m
2026-07-02 SKK077 - Jul 2, 08:30 UTCJul 2, 09:05 UTC35m
2026-07-01 SKK076 - Jul 1, 17:15 UTCJul 2, 06:51 UTC13h 36m
2026-07-01 SKK076 - Jul 1, 15:35 UTCJul 1, 16:15 UTC40m
2026-06-25 SKK015 - Jun 25, 17:09 UTCJun 26, 08:45 UTC15h 35m
2026-06-22 SKK035 DLA → LFW Jun 22, 08:00 UTCJun 22, 08:29 UTC30m
2026-06-21 SKK051 - Jun 21, 06:50 UTCJun 21, 07:25 UTC35m
2026-06-20 SKK053 - Jun 20, 08:25 UTCJun 20, 17:59 UTC9h 35m
2026-06-20 SKK053 - Jun 20, 06:54 UTCJun 20, 07:24 UTC30m
2026-06-19 SKK052 - Jun 19, 17:14 UTCJun 19, 17:44 UTC30m
2026-06-19 SKK052 - Jun 19, 15:29 UTCJun 19, 16:04 UTC35m
2026-06-17 SKK071 - Jun 17, 03:35 UTCJun 17, 04:10 UTC35m
2026-06-16 SKK070 FIH → JNB Jun 16, 20:55 UTCJun 16, 21:30 UTC35m
2026-06-13 SKK077 - Jun 13, 08:25 UTCJun 13, 09:00 UTC35m
2026-06-12 SKK076 - Jun 12, 18:15 UTCJun 13, 06:50 UTC12h 34m
2026-06-12 SKK076 - Jun 12, 04:00 UTCJun 12, 16:40 UTC12h 40m
2026-06-11 SKK070 FIH → JNB Jun 11, 20:55 UTCJun 11, 21:40 UTC45m
2026-06-10 SKK034 LFW → DLA Jun 10, 16:40 UTCJun 10, 17:05 UTC25m
2026-06-08 SKK055 RAI → DSS Jun 8, 08:30 UTCJun 8, 09:05 UTC35m
2026-06-08 SKK055 RAI → DSS Jun 8, 06:35 UTCJun 8, 07:20 UTC45m
2026-06-07 SKK054 - Jun 7, 17:25 UTCJun 7, 17:55 UTC30m
2026-06-07 SKK051 DSS → COO Jun 7, 06:50 UTCJun 7, 16:25 UTC9h 35m
2026-06-06 SKK050 LFW → DSS Jun 6, 17:34 UTCJun 6, 18:09 UTC35m
2026-06-04 SKK075 LBV → LFW Jun 4, 03:30 UTCJun 4, 04:00 UTC30m
2026-06-03 SKK074 LBV → JNB Jun 3, 21:00 UTCJun 3, 21:40 UTC40m
2026-06-01 SKK055 RAI → DSS Jun 1, 09:55 UTCJun 1, 10:25 UTC30m
2026-06-01 SKK055 RAI → DSS Jun 1, 07:30 UTCJun 1, 08:15 UTC45m
2026-05-31 SKK054 - May 31, 18:55 UTCMay 31, 19:25 UTC30m
2026-05-31 SKK050 LFW → DSS May 31, 16:25 UTCMay 31, 17:10 UTC45m

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 .

Mode-S 040228 frequently asked

What is Mode-S code 040228?
040228 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AZY.
Where is Mode-S 040228 registered?
Mode-S code 040228 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040228 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040228, octal 01001050, decimal 262,696.
What flights does 040228 operate?
Mode-S 040228 has broadcast 20 distinct callsigns, including SKK076, SKK077, SKK070, SKK051, SKK071.