Apparatus

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sensors Mode-S transponder

00ADD1

ICAO 24-bit transponder address · allocated to South Africa

Hex
00ADD1
Octal
00126721
Decimal
44,497
Country
ZA
No current signal · last broadcast 12d ago
Flights observed
160
Distinct callsigns
1
Country
ZA
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S 00ADD1.

Country allocation

The ICAO 24-bit address 00ADD1 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
ZSIDL - 160 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-01 ZSIDL - Jul 1, 11:05 UTCJul 1, 11:15 UTC10m
2026-06-30 ZSIDL - Jun 30, 15:00 UTCJun 30, 15:35 UTC35m
2026-06-30 ZSIDL - Jun 30, 13:40 UTCJun 30, 14:10 UTC30m
2026-06-30 ZSIDL - Jun 30, 08:55 UTCJun 30, 09:45 UTC50m
2026-06-29 ZSIDL - Jun 29, 14:50 UTCJun 29, 15:34 UTC45m
2026-06-29 ZSIDL - Jun 29, 13:24 UTCJun 29, 13:39 UTC15m
2026-06-29 ZSIDL - Jun 29, 09:10 UTCJun 29, 09:25 UTC15m
2026-06-26 ZSIDL - Jun 26, 07:50 UTCJun 26, 08:20 UTC30m
2026-06-25 ZSIDL - Jun 25, 14:29 UTCJun 25, 15:44 UTC1h 15m
2026-06-25 ZSIDL - Jun 25, 13:35 UTCJun 25, 13:55 UTC20m
2026-06-25 ZSIDL - Jun 25, 12:04 UTCJun 25, 12:25 UTC20m
2026-06-24 ZSIDL - Jun 24, 13:34 UTCJun 24, 15:14 UTC1h 40m
2026-06-24 ZSIDL - Jun 24, 12:30 UTCJun 24, 12:40 UTC10m
2026-06-20 ZSIDL - Jun 20, 15:14 UTCJun 20, 15:39 UTC25m
2026-06-20 ZSIDL - Jun 20, 13:29 UTCJun 20, 13:55 UTC25m
2026-06-20 ZSIDL - Jun 20, 12:19 UTCJun 20, 12:34 UTC15m
2026-06-20 ZSIDL - Jun 20, 09:09 UTCJun 20, 09:44 UTC35m
2026-06-20 ZSIDL - Jun 20, 07:34 UTCJun 20, 08:14 UTC40m
2026-06-16 ZSIDL - Jun 16, 11:10 UTCJun 16, 11:25 UTC15m
2026-06-10 ZSIDL - Jun 10, 15:20 UTCJun 10, 15:45 UTC25m
2026-06-10 ZSIDL - Jun 10, 13:40 UTCJun 10, 14:20 UTC40m
2026-06-09 ZSIDL - Jun 9, 12:20 UTCJun 9, 12:40 UTC20m
2026-06-08 ZSIDL - Jun 8, 13:40 UTCJun 8, 14:15 UTC35m
2026-06-07 ZSIDL - Jun 7, 15:05 UTCJun 7, 15:45 UTC40m
2026-06-06 ZSIDL - Jun 6, 14:59 UTCJun 6, 15:44 UTC45m
2026-06-05 ZSIDL - Jun 5, 15:20 UTCJun 5, 16:10 UTC50m
2026-06-05 ZSIDL - Jun 5, 12:10 UTCJun 5, 12:45 UTC35m
2026-06-05 ZSIDL - Jun 5, 10:20 UTCJun 5, 10:35 UTC15m
2026-06-05 ZSIDL - Jun 5, 09:10 UTCJun 5, 09:20 UTC10m
2026-06-05 ZSIDL - Jun 5, 08:15 UTCJun 5, 08:25 UTC10m
2026-06-04 ZSIDL - Jun 4, 14:00 UTCJun 4, 14:10 UTC10m
2026-06-04 ZSIDL - Jun 4, 12:10 UTCJun 4, 13:00 UTC50m
2026-06-04 ZSIDL - Jun 4, 10:50 UTCJun 4, 11:15 UTC25m
2026-06-04 ZSIDL - Jun 4, 06:20 UTCJun 4, 06:50 UTC30m
2026-06-03 ZSIDL - Jun 3, 15:15 UTCJun 3, 15:35 UTC20m
2026-06-03 ZSIDL - Jun 3, 13:45 UTCJun 3, 14:30 UTC45m
2026-06-03 ZSIDL - Jun 3, 12:00 UTCJun 3, 12:40 UTC40m
2026-06-03 ZSIDL - Jun 3, 11:00 UTCJun 3, 11:25 UTC25m
2026-06-02 ZSIDL - Jun 2, 12:35 UTCJun 2, 12:55 UTC20m
2026-06-01 ZSIDL - Jun 1, 14:40 UTCJun 1, 14:50 UTC10m
2026-06-01 ZSIDL - Jun 1, 12:25 UTCJun 1, 13:05 UTC40m
2026-05-31 ZSIDL - May 31, 10:45 UTCMay 31, 11:15 UTC30m
2026-05-31 ZSIDL - May 31, 09:40 UTCMay 31, 10:00 UTC20m
2026-05-31 ZSIDL - May 31, 08:25 UTCMay 31, 08:35 UTC10m
2026-05-30 ZSIDL - May 30, 15:10 UTCMay 30, 15:35 UTC25m
2026-05-30 ZSIDL - May 30, 13:50 UTCMay 30, 14:30 UTC40m
2026-05-30 ZSIDL - May 30, 11:30 UTCMay 30, 12:10 UTC40m
2026-05-30 ZSIDL - May 30, 08:55 UTCMay 30, 09:50 UTC55m
2026-05-29 ZSIDL - May 29, 13:30 UTCMay 29, 14:15 UTC45m
2026-05-29 ZSIDL - May 29, 12:20 UTCMay 29, 12:50 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.

Mode-S 00ADD1 frequently asked

What is Mode-S code 00ADD1?
00ADD1 is an ICAO 24-bit transponder address. Allocated to South Africa.
Where is Mode-S 00ADD1 registered?
Mode-S code 00ADD1 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 00ADD1 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 00ADD1, octal 00126721, decimal 44,497.
What flights does 00ADD1 operate?
Mode-S 00ADD1 has broadcast 1 distinct callsign, including ZSIDL.