Apparatus

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sensors Mode-S transponder

040229

ICAO 24-bit transponder address · allocated to Ethiopia

Currently assigned to ET-AZZ · BOEING 737-800

Hex
040229
Octal
01001051
Decimal
262,697
Country
ET
Tail
ET-AZZ
Type
B738
No current signal · last broadcast Jul 26, 08:55 UTC
Flights observed
95
Distinct callsigns
20
Country
ET
Last broadcast
Jul 26, 08:55 UTC

Last known position

Most recent position reported by Mode-S 040229.

Country allocation

The ICAO 24-bit address 040229 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
SKK071 Skylink Aviation 8 2026-07-24
SKK070 Skylink Aviation 8 2026-07-23
SKK077 - 7 2026-07-11
SKK076 - 7 2026-07-10
SKK064 - 6 2026-06-15
SKK034 - 6 2026-05-20
SKK065 Skylink Aviation 5 2026-06-16
SKK051 - 5 2026-07-13
SKK074 Skylink Aviation 4 2026-06-10
SKK069 - 4 2026-07-15
SKK050 Skylink Aviation 4 2026-06-07
SKK015 - 4 2026-07-02
SKK055 - 3 2026-07-07
SKK054 - 3 2026-07-07
SKK035 - 3 2026-07-18
SKK014 Skylink Aviation 3 2026-06-18
SKK081 Skylink Aviation 2 2026-07-26
SKK080 Skylink Aviation 2 2026-07-25
SKK075 Skylink Aviation 2 2026-06-11
SKK068 - 2 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKK081 NKC → BJL Jul 26, 08:25 UTCJul 26, 08:55 UTC30m
2026-07-26 SKK081 NKC → BJL Jul 26, 06:55 UTCJul 26, 07:30 UTC35m
2026-07-25 SKK080 LFW → BJL Jul 25, 17:40 UTCJul 25, 18:15 UTC35m
2026-07-25 SKK080 LFW → BJL Jul 25, 16:25 UTCJul 25, 16:50 UTC25m
2026-07-24 SKK071 FIH → LFW Jul 24, 03:45 UTCJul 24, 04:10 UTC25m
2026-07-23 SKK070 FIH → JNB Jul 23, 20:45 UTCJul 23, 21:20 UTC35m
2026-07-18 SKK035 - Jul 18, 08:20 UTCJul 18, 08:45 UTC25m
2026-07-15 SKK069 - Jul 15, 07:45 UTCJul 15, 08:05 UTC20m
2026-07-14 SKK068 - Jul 14, 17:25 UTCJul 14, 17:45 UTC20m
2026-07-13 SKK051 - Jul 13, 09:20 UTCJul 13, 09:50 UTC30m
2026-07-12 SKK071 - Jul 12, 03:45 UTCJul 12, 18:40 UTC14h 55m
2026-07-11 SKK077 - Jul 11, 08:45 UTCJul 11, 21:45 UTC13h 0m
2026-07-11 SKK077 - Jul 11, 06:45 UTCJul 11, 07:10 UTC25m
2026-07-10 SKK076 - Jul 10, 17:20 UTCJul 10, 17:50 UTC30m
2026-07-10 SKK076 - Jul 10, 15:45 UTCJul 10, 16:20 UTC35m
2026-07-09 SKK077 - Jul 9, 09:05 UTCJul 9, 09:30 UTC25m
2026-07-09 SKK077 - Jul 9, 06:25 UTCJul 9, 07:00 UTC35m
2026-07-08 SKK076 - Jul 8, 17:25 UTCJul 8, 17:55 UTC30m
2026-07-08 SKK076 - Jul 8, 08:45 UTCJul 8, 16:25 UTC7h 40m
2026-07-07 SKK055 - Jul 7, 17:50 UTCJul 8, 07:25 UTC13h 35m
2026-07-07 SKK054 - Jul 7, 15:35 UTCJul 7, 16:10 UTC35m
2026-07-06 SKK035 DLA → LFW Jul 6, 17:20 UTCJul 7, 08:45 UTC15h 25m
2026-07-05 SKK071 - Jul 5, 02:45 UTCJul 5, 03:15 UTC30m
2026-07-04 SKK070 FIH → JNB Jul 4, 23:30 UTCJul 5, 00:05 UTC35m
2026-07-02 SKK015 - Jul 2, 17:35 UTCJul 3, 08:10 UTC14h 35m
2026-06-26 SKK071 - Jun 26, 03:45 UTCJun 26, 04:14 UTC30m
2026-06-25 SKK070 FIH → JNB Jun 25, 23:14 UTCJun 25, 23:49 UTC35m
2026-06-22 SKK078 LFW → NBO Jun 22, 14:59 UTCJun 22, 15:10 UTC10m
2026-06-19 SKK015 - Jun 19, 07:19 UTCJun 19, 08:09 UTC50m
2026-06-18 SKK014 CKY → NKC Jun 18, 17:00 UTCJun 18, 17:45 UTC45m
2026-06-16 SKK065 NSI → LFW Jun 16, 08:44 UTCJun 16, 09:10 UTC25m
2026-06-16 SKK065 NSI → LFW Jun 16, 07:45 UTCJun 16, 08:05 UTC20m
2026-06-15 SKK064 - Jun 15, 16:35 UTCJun 15, 16:45 UTC10m
2026-06-15 SKK064 - Jun 15, 15:15 UTCJun 15, 15:45 UTC30m
2026-06-14 SKK071 - Jun 14, 04:00 UTCJun 14, 10:25 UTC6h 25m
2026-06-13 SKK070 FIH → JNB Jun 13, 08:45 UTCJun 13, 21:45 UTC13h 0m
2026-06-13 SKK053 - Jun 13, 07:10 UTCJun 13, 07:40 UTC30m
2026-06-12 SKK052 - Jun 12, 17:00 UTCJun 12, 17:30 UTC30m
2026-06-12 SKK052 - Jun 12, 15:30 UTCJun 12, 16:05 UTC35m
2026-06-11 SKK075 LBV → LFW Jun 11, 04:50 UTCJun 11, 05:20 UTC30m
2026-06-10 SKK074 LBV → JNB Jun 10, 21:40 UTCJun 10, 22:20 UTC40m
2026-06-09 SKK065 NSI → LFW Jun 9, 09:20 UTCJun 9, 09:45 UTC25m
2026-06-09 SKK065 NSI → LFW Jun 9, 07:50 UTCJun 9, 08:10 UTC20m
2026-06-08 SKK064 - Jun 8, 17:15 UTCJun 8, 17:25 UTC10m
2026-06-08 SKK064 - Jun 8, 07:15 UTCJun 8, 16:10 UTC8h 55m
2026-06-07 SKK050 LFW → DSS Jun 7, 17:55 UTCJun 7, 18:30 UTC35m
2026-06-04 SKK077 - Jun 4, 08:30 UTCJun 4, 08:55 UTC25m
2026-06-03 SKK076 - Jun 3, 17:20 UTCJun 4, 07:00 UTC13h 40m
2026-06-03 SKK076 - Jun 3, 15:35 UTCJun 3, 16:10 UTC35m
2026-05-29 SKK071 FIH → LFW May 29, 03:40 UTCMay 29, 04:10 UTC30m

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-AZZ page for operator, model, and routing details .

Mode-S 040229 frequently asked

What is Mode-S code 040229?
040229 is an ICAO 24-bit transponder address. Allocated to Ethiopia. Assigned to ET-AZZ.
Where is Mode-S 040229 registered?
Mode-S code 040229 is allocated to Ethiopia (ET). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 040229 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 08:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 040229, octal 01001051, decimal 262,697.
What flights does 040229 operate?
Mode-S 040229 has broadcast 20 distinct callsigns, including SKK071, SKK070, SKK077, SKK076, SKK064.