Apparatus

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sensors Mode-S transponder

008239

ICAO 24-bit transponder address · allocated to South Africa

Currently assigned to ZS-AVG · PIPER J-3 Cub

Hex
008239
Octal
00101071
Decimal
33,337
Country
ZA
Tail
ZS-AVG
Type
J3
No current signal · last broadcast 1h ago
Flights observed
64
Distinct callsigns
1
Country
ZA
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 008239.

Country allocation

The ICAO 24-bit address 008239 falls within the block assigned to South Africa (ZA) by ICAO Annex 10, Volume III. Every aircraft registered in South Africa 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 1 distinct

Callsign Airline Flights Last seen
ZSOFD - 64 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 ZSOFD - Jul 20, 13:40 UTCJul 20, 14:15 UTC35m
2026-07-20 ZSOFD - Jul 20, 10:05 UTCJul 20, 10:35 UTC30m
2026-07-14 ZSOFD - Jul 14, 14:40 UTCJul 14, 14:50 UTC10m
2026-07-14 ZSOFD - Jul 14, 05:15 UTCJul 14, 05:50 UTC35m
2026-07-12 ZSOFD - Jul 12, 13:15 UTCJul 12, 13:35 UTC20m
2026-07-12 ZSOFD - Jul 12, 09:05 UTCJul 12, 09:35 UTC30m
2026-07-10 ZSOFD - Jul 10, 08:20 UTCJul 10, 08:35 UTC15m
2026-07-10 ZSOFD - Jul 10, 05:45 UTCJul 10, 06:05 UTC20m
2026-07-09 ZSOFD - Jul 9, 15:30 UTCJul 9, 15:55 UTC25m
2026-07-09 ZSOFD - Jul 9, 06:50 UTCJul 9, 07:20 UTC30m
2026-07-08 ZSOFD - Jul 8, 10:20 UTCJul 8, 10:35 UTC15m
2026-07-08 ZSOFD - Jul 8, 07:40 UTCJul 8, 08:00 UTC20m
2026-07-06 ZSOFD - Jul 6, 13:20 UTCJul 6, 13:50 UTC30m
2026-07-06 ZSOFD - Jul 6, 11:25 UTCJul 6, 11:50 UTC25m
2026-07-06 ZSOFD - Jul 6, 07:00 UTCJul 6, 07:20 UTC20m
2026-07-03 ZSOFD - Jul 3, 10:40 UTCJul 3, 11:25 UTC45m
2026-07-03 ZSOFD - Jul 3, 08:05 UTCJul 3, 09:15 UTC1h 10m
2026-07-01 ZSOFD - Jul 1, 14:00 UTCJul 1, 14:15 UTC15m
2026-07-01 ZSOFD - Jul 1, 12:35 UTCJul 1, 13:00 UTC25m
2026-07-01 ZSOFD - Jul 1, 10:25 UTCJul 1, 10:55 UTC30m
2026-06-27 ZSOFD - Jun 27, 13:00 UTCJun 27, 13:44 UTC45m
2026-06-27 ZSOFD - Jun 27, 09:34 UTCJun 27, 09:55 UTC20m
2026-06-26 ZSOFD - Jun 26, 09:59 UTCJun 26, 10:35 UTC35m
2026-06-23 ZSOFD - Jun 23, 14:29 UTCJun 23, 14:39 UTC10m
2026-06-23 ZSOFD - Jun 23, 10:39 UTCJun 23, 10:59 UTC20m
2026-06-23 ZSOFD - Jun 23, 05:45 UTCJun 23, 06:09 UTC25m
2026-06-20 ZSOFD - Jun 20, 12:14 UTCJun 20, 12:45 UTC30m
2026-06-20 ZSOFD - Jun 20, 07:39 UTCJun 20, 08:09 UTC30m
2026-06-19 ZSOFD - Jun 19, 09:59 UTCJun 19, 10:35 UTC35m
2026-06-19 ZSOFD - Jun 19, 05:24 UTCJun 19, 05:59 UTC35m
2026-06-18 ZSOFD - Jun 18, 09:45 UTCJun 18, 10:20 UTC35m
2026-06-18 ZSOFD - Jun 18, 03:45 UTCJun 18, 04:15 UTC30m
2026-06-17 ZSOFD - Jun 17, 11:20 UTCJun 17, 11:50 UTC30m
2026-06-17 ZSOFD - Jun 17, 06:15 UTCJun 17, 06:55 UTC40m
2026-06-15 ZSOFD - Jun 15, 11:00 UTCJun 15, 11:15 UTC15m
2026-06-15 ZSOFD - Jun 15, 06:04 UTCJun 15, 06:35 UTC30m
2026-06-01 ZSOFD - Jun 1, 10:45 UTCJun 1, 11:10 UTC25m
2026-06-01 ZSOFD - Jun 1, 06:10 UTCJun 1, 06:55 UTC45m
2026-05-29 ZSOFD - May 29, 13:30 UTCMay 29, 14:10 UTC40m
2026-05-29 ZSOFD - May 29, 11:15 UTCMay 29, 11:40 UTC25m
2026-05-13 ZSOFD - May 13, 06:15 UTCMay 13, 06:50 UTC35m
2026-05-12 ZSOFD - May 12, 08:05 UTCMay 12, 08:15 UTC10m
2026-05-08 ZSOFD - May 8, 09:25 UTCMay 8, 09:34 UTC10m
2026-05-08 ZSOFD - May 8, 06:50 UTCMay 8, 06:59 UTC10m
2026-05-07 ZSOFD - May 7, 13:40 UTCMay 7, 14:30 UTC50m
2026-05-07 ZSOFD - May 7, 11:40 UTCMay 7, 12:20 UTC40m
2026-05-07 ZSOFD HLA → HLA May 7, 06:55 UTCMay 7, 09:25 UTC2h 30m
2026-05-07 ZSOFD - May 7, 04:30 UTCMay 7, 04:40 UTC10m
2026-05-05 ZSOFD - May 5, 11:10 UTCMay 5, 11:40 UTC30m
2026-05-05 ZSOFD - May 5, 05:40 UTCMay 5, 06:10 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 ZS-AVG page for operator, model, and routing details .

Mode-S 008239 frequently asked

What is Mode-S code 008239?
008239 is an ICAO 24-bit transponder address. Allocated to South Africa. Assigned to ZS-AVG.
Where is Mode-S 008239 registered?
Mode-S code 008239 is allocated to South Africa (ZA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 008239 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 008239, octal 00101071, decimal 33,337.
What flights does 008239 operate?
Mode-S 008239 has broadcast 1 distinct callsign, including ZSOFD.