Apparatus

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sensors Mode-S transponder

04020B

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-AYU · BOEING 737-800

Hex
04020B
Octal
01001013
Decimal
262,667
Country
ET
Tail
ET-AYU
Type
B738
No current signal · last broadcast 12h ago
Flights observed
92
Distinct callsigns
20
Country
ET
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 04020B.

Country allocation

The ICAO 24-bit address 04020B 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
SKK052 - 10 2026-07-01
SKK053 - 9 2026-07-02
SKK055 Skylink Aviation 7 2026-07-17
SKK065 - 6 2026-05-16
SKK051 - 6 2026-06-25
SKK050 - 6 2026-06-24
SKK054 - 5 2026-07-16
SKK034 - 5 2026-07-15
SKK075 Skylink Aviation 4 2026-06-08
SKK074 Skylink Aviation 4 2026-06-07
SKK071 - 4 2026-07-10
SKK070 Skylink Aviation 4 2026-07-09
SKK064 - 4 2026-05-15
SKK022 - 4 2026-07-14
SKK035 - 3 2026-07-13
SKK023 - 3 2026-07-15
SKK069 Skylink Aviation 2 2026-06-12
SKK038 - 2 2026-07-11
SKK076 - 1 2026-07-17
SKK045 Skylink Aviation 1 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 SKK076 - Jul 17, 17:25 UTCJul 17, 18:00 UTC35m
2026-07-17 SKK055 RAI → DSS Jul 17, 08:40 UTCJul 17, 16:19 UTC7h 40m
2026-07-17 SKK055 RAI → DSS Jul 17, 07:14 UTCJul 17, 07:30 UTC15m
2026-07-16 SKK054 - Jul 16, 17:14 UTCJul 16, 17:35 UTC20m
2026-07-16 SKK054 - Jul 16, 15:35 UTCJul 16, 16:09 UTC35m
2026-07-15 SKK034 - Jul 15, 17:40 UTCJul 16, 08:55 UTC15h 15m
2026-07-15 SKK023 - Jul 15, 06:30 UTCJul 15, 07:05 UTC35m
2026-07-14 SKK022 - Jul 14, 18:35 UTCJul 14, 19:15 UTC40m
2026-07-13 SKK035 - Jul 13, 08:35 UTCJul 13, 08:45 UTC10m
2026-07-11 SKK038 - Jul 11, 16:35 UTCJul 11, 16:45 UTC10m
2026-07-10 SKK034 - Jul 10, 16:30 UTCJul 11, 08:45 UTC16h 15m
2026-07-10 SKK071 - Jul 10, 03:45 UTCJul 10, 04:15 UTC30m
2026-07-09 SKK070 FIH → JNB Jul 9, 20:30 UTCJul 9, 21:00 UTC30m
2026-07-05 SKK014 - Jul 5, 17:25 UTCJul 6, 08:00 UTC14h 35m
2026-07-03 SKK035 DLA → LFW Jul 3, 17:25 UTCJul 4, 09:50 UTC16h 25m
2026-07-03 SKK071 - Jul 3, 03:55 UTCJul 3, 17:25 UTC13h 30m
2026-07-02 SKK053 - Jul 2, 08:25 UTCJul 2, 23:30 UTC15h 5m
2026-07-02 SKK053 - Jul 2, 06:55 UTCJul 2, 07:20 UTC25m
2026-07-01 SKK052 - Jul 1, 17:10 UTCJul 1, 17:35 UTC25m
2026-07-01 SKK052 - Jul 1, 15:25 UTCJul 1, 16:05 UTC40m
2026-06-25 SKK051 - Jun 25, 09:40 UTCJun 25, 10:09 UTC30m
2026-06-24 SKK050 - Jun 24, 19:44 UTCJun 24, 20:24 UTC40m
2026-06-18 - - Jun 18, 06:10 UTCJun 18, 06:15 UTC5m
2026-06-17 SKK022 - Jun 17, 18:05 UTCJun 17, 18:20 UTC15m
2026-06-16 SKK053 - Jun 16, 08:39 UTCJun 16, 09:15 UTC35m
2026-06-16 SKK053 - Jun 16, 06:54 UTCJun 16, 07:20 UTC25m
2026-06-15 SKK052 - Jun 15, 17:20 UTCJun 15, 17:50 UTC30m
2026-06-15 SKK052 - Jun 15, 15:35 UTCJun 15, 16:09 UTC35m
2026-06-14 SKK034 LFW → DLA Jun 14, 16:30 UTCJun 15, 08:25 UTC15h 55m
2026-06-12 SKK069 SSG → LFW Jun 12, 07:35 UTCJun 12, 07:55 UTC20m
2026-06-11 SKK053 OXB → DSS Jun 11, 08:40 UTCJun 11, 17:15 UTC8h 35m
2026-06-11 SKK053 OXB → DSS Jun 11, 06:50 UTCJun 11, 07:15 UTC25m
2026-06-10 SKK052 LFW → DSS Jun 10, 17:15 UTCJun 10, 17:35 UTC20m
2026-06-10 SKK052 LFW → DSS Jun 10, 08:35 UTCJun 10, 16:15 UTC7h 40m
2026-06-10 SKK055 RAI → DSS Jun 10, 06:05 UTCJun 10, 07:15 UTC1h 10m
2026-06-09 SKK054 - Jun 9, 17:25 UTCJun 9, 18:05 UTC40m
2026-06-09 SKK054 - Jun 9, 15:30 UTCJun 9, 15:50 UTC20m
2026-06-08 SKK075 LBV → LFW Jun 8, 03:15 UTCJun 8, 03:45 UTC30m
2026-06-07 SKK074 LBV → JNB Jun 7, 23:20 UTCJun 7, 23:55 UTC35m
2026-06-07 SKK074 LBV → JNB Jun 7, 04:00 UTCJun 7, 23:55 UTC19h 55m
2026-06-06 SKK051 DSS → COO Jun 6, 07:05 UTCJun 6, 22:00 UTC14h 55m
2026-06-05 SKK055 RAI → DSS Jun 5, 08:45 UTCJun 5, 18:25 UTC9h 40m
2026-06-04 SKK055 RAI → DSS Jun 4, 17:20 UTCJun 5, 07:20 UTC14h 0m
2026-06-04 SKK054 - Jun 4, 15:35 UTCJun 4, 16:15 UTC40m
2026-06-02 SKK053 OXB → DSS Jun 2, 08:15 UTCJun 2, 08:50 UTC35m
2026-06-02 SKK053 OXB → DSS Jun 2, 06:50 UTCJun 2, 07:10 UTC20m
2026-06-01 SKK052 LFW → DSS Jun 1, 17:35 UTCJun 1, 18:00 UTC25m
2026-06-01 SKK052 LFW → DSS Jun 1, 15:45 UTCJun 1, 16:20 UTC35m
2026-05-31 SKK034 LFW → DLA May 31, 16:10 UTCJun 1, 08:30 UTC16h 20m
2026-05-30 SKK050 LFW → DSS May 30, 08:30 UTCMay 30, 18:05 UTC9h 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-AYU page for operator, model, and routing details .

Mode-S 04020B frequently asked

What is Mode-S code 04020B?
04020B is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AYU.
Where is Mode-S 04020B registered?
Mode-S code 04020B is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 04020B broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 04020B, octal 01001013, decimal 262,667.
What flights does 04020B operate?
Mode-S 04020B has broadcast 20 distinct callsigns, including SKK052, SKK053, SKK055, SKK065, SKK051.