Apparatus

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sensors Mode-S transponder

00A018

ICAO 24-bit transponder address · allocated to South Africa

Hex
00A018
Octal
00120030
Decimal
40,984
Country
ZA
No current signal · last broadcast 11h ago
Flights observed
94
Distinct callsigns
1
Country
ZA
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 00A018.

Country allocation

The ICAO 24-bit address 00A018 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
ZTRNW - 94 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ZTRNW - May 29, 14:40 UTCMay 29, 14:50 UTC10m
2026-05-29 ZTRNW - May 29, 13:35 UTCMay 29, 14:00 UTC25m
2026-05-28 ZTRNW - May 28, 15:30 UTCMay 28, 15:45 UTC15m
2026-05-28 ZTRNW - May 28, 13:15 UTCMay 28, 13:25 UTC10m
2026-05-28 ZTRNW - May 28, 11:05 UTCMay 28, 11:45 UTC40m
2026-05-27 ZTRNW - May 27, 13:00 UTCMay 27, 13:25 UTC25m
2026-05-27 ZTRNW - May 27, 11:10 UTCMay 27, 11:45 UTC35m
2026-05-26 ZTRNW - May 26, 12:45 UTCMay 26, 13:19 UTC35m
2026-05-26 ZTRNW - May 26, 11:15 UTCMay 26, 11:39 UTC25m
2026-05-26 ZTRNW - May 26, 08:50 UTCMay 26, 09:04 UTC15m
2026-05-18 ZTRNW - May 18, 13:00 UTCMay 18, 13:55 UTC55m
2026-05-18 ZTRNW - May 18, 09:35 UTCMay 18, 09:45 UTC10m
2026-05-18 ZTRNW - May 18, 08:55 UTCMay 18, 09:05 UTC10m
2026-05-18 ZTRNW - May 18, 07:10 UTCMay 18, 08:05 UTC55m
2026-05-17 ZTRNW - May 17, 13:45 UTCMay 17, 14:01 UTC15m
2026-05-17 ZTRNW - May 17, 09:55 UTCMay 17, 10:05 UTC10m
2026-05-17 ZTRNW - May 17, 06:55 UTCMay 17, 07:50 UTC55m
2026-05-16 ZTRNW - May 16, 14:16 UTCMay 16, 14:31 UTC15m
2026-05-15 ZTRNW - May 15, 15:20 UTCMay 15, 15:45 UTC25m
2026-05-15 ZTRNW - May 15, 13:55 UTCMay 15, 14:10 UTC15m
2026-05-15 ZTRNW - May 15, 10:55 UTCMay 15, 11:10 UTC15m
2026-05-15 ZTRNW - May 15, 09:00 UTCMay 15, 09:45 UTC45m
2026-05-15 ZTRNW - May 15, 06:55 UTCMay 15, 08:30 UTC1h 35m
2026-05-14 ZTRNW - May 14, 14:40 UTCMay 14, 15:25 UTC45m
2026-05-14 ZTRNW - May 14, 12:25 UTCMay 14, 13:50 UTC1h 25m
2026-05-14 ZTRNW - May 14, 11:20 UTCMay 14, 11:30 UTC10m
2026-05-14 ZTRNW - May 14, 09:35 UTCMay 14, 09:50 UTC15m
2026-05-14 ZTRNW - May 14, 08:15 UTCMay 14, 08:25 UTC10m
2026-05-13 ZTRNW - May 13, 13:05 UTCMay 13, 13:20 UTC15m
2026-05-13 ZTRNW - May 13, 11:30 UTCMay 13, 12:10 UTC40m
2026-05-13 ZTRNW - May 13, 07:55 UTCMay 13, 09:10 UTC1h 15m
2026-05-13 ZTRNW - May 13, 06:45 UTCMay 13, 07:25 UTC40m
2026-05-09 ZTRNW - May 9, 10:50 UTCMay 9, 12:10 UTC1h 20m
2026-05-09 ZTRNW - May 9, 09:20 UTCMay 9, 09:35 UTC15m
2026-05-08 ZTRNW - May 8, 09:09 UTCMay 8, 09:44 UTC35m
2026-05-08 ZTRNW - May 8, 07:55 UTCMay 8, 08:05 UTC10m
2026-05-07 ZTRNW - May 7, 13:45 UTCMay 7, 14:55 UTC1h 10m
2026-05-07 ZTRNW - May 7, 11:40 UTCMay 7, 11:50 UTC10m
2026-05-07 ZTRNW - May 7, 08:50 UTCMay 7, 09:05 UTC15m
2026-05-05 ZTRNW - May 5, 13:20 UTCMay 5, 14:25 UTC1h 5m
2026-05-05 ZTRNW - May 5, 12:10 UTCMay 5, 12:25 UTC15m
2026-05-05 ZTRNW - May 5, 10:50 UTCMay 5, 11:20 UTC30m
2026-05-04 ZTRNW - May 4, 13:00 UTCMay 4, 15:30 UTC2h 30m
2026-05-04 ZTRNW - May 4, 09:40 UTCMay 4, 12:05 UTC2h 25m
2026-05-01 ZTRNW - May 1, 15:10 UTCMay 1, 15:35 UTC25m
2026-05-01 ZTRNW - May 1, 11:15 UTCMay 1, 12:00 UTC45m
2026-05-01 ZTRNW - May 1, 09:45 UTCMay 1, 10:10 UTC25m
2026-04-30 ZTRNW - Apr 30, 14:40 UTCApr 30, 15:05 UTC25m
2026-04-30 ZTRNW - Apr 30, 13:40 UTCApr 30, 13:55 UTC15m
2026-04-30 ZTRNW - Apr 30, 10:50 UTCApr 30, 12:30 UTC1h 40m

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 00A018 frequently asked

What is Mode-S code 00A018?
00A018 is an ICAO 24-bit transponder address. Allocated to South Africa.
Where is Mode-S 00A018 registered?
Mode-S code 00A018 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 00A018 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 00A018, octal 00120030, decimal 40,984.
What flights does 00A018 operate?
Mode-S 00A018 has broadcast 1 distinct callsign, including ZTRNW.