Apparatus

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sensors Mode-S transponder

00A51A

ICAO 24-bit transponder address · allocated to South Africa

Currently assigned to ZS-SZH · AIRBUS A-320

Hex
00A51A
Octal
00122432
Decimal
42,266
Country
ZA
Tail
ZS-SZH
Type
A320
No current signal · last broadcast Jul 26, 19:10 UTC
Flights observed
301
Distinct callsigns
20
Country
ZA
Last broadcast
Jul 26, 19:10 UTC

Last known position

Most recent position reported by Mode-S 00A51A.

Country allocation

The ICAO 24-bit address 00A51A 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 20 distinct

Callsign Airline Flights Last seen
SAA410 South African Airways 15 2026-07-21
SAA530 South African Airways 12 2026-07-24
SAA419 South African Airways 12 2026-07-23
SAA404 - 11 2026-07-23
SAA313 South African Airways 11 2026-07-17
SAA556 South African Airways 10 2026-07-24
SAA422 - 10 2026-07-14
SAA405 South African Airways 9 2026-07-23
SAA372 - 9 2026-07-16
SAA366 South African Airways 9 2026-07-26
SAA562 - 8 2026-07-01
SAA546 South African Airways 8 2026-07-25
SAA352 South African Airways 8 2026-07-25
SAA337 South African Airways 8 2026-07-25
SAA354 - 7 2026-07-17
SAA347 - 7 2026-07-20
SAA326 - 7 2026-07-17
SAA041 - 7 2026-07-13
SAA362 South African Airways 6 2026-07-20
SAA359 - 6 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAA366 CPT → JNB Jul 26, 18:55 UTCJul 26, 19:10 UTC15m
2026-07-26 SAA366 CPT → JNB Jul 26, 17:35 UTCJul 26, 17:55 UTC20m
2026-07-26 SAA355 JNB → CPT Jul 26, 14:50 UTCJul 26, 16:40 UTC1h 50m
2026-07-26 SAA558 DUR → JNB Jul 26, 13:25 UTCJul 26, 13:50 UTC25m
2026-07-26 SAA551 JNB → DUR Jul 26, 11:10 UTCJul 26, 11:35 UTC25m
2026-07-25 SAA352 CPT → JNB Jul 25, 14:05 UTCJul 25, 15:45 UTC1h 40m
2026-07-25 SAA337 JNB → CPT Jul 25, 11:15 UTCJul 25, 13:05 UTC1h 50m
2026-07-25 SAA546 DUR → JNB Jul 25, 07:35 UTCJul 25, 10:00 UTC2h 25m
2026-07-24 SAA366 CPT → JNB Jul 24, 17:40 UTCJul 24, 19:15 UTC1h 35m
2026-07-24 SA355 JNB → CPT Jul 24, 14:55 UTCJul 24, 16:45 UTC1h 50m
2026-07-24 SAA556 DUR → JNB Jul 24, 11:50 UTCJul 24, 12:05 UTC15m
2026-07-24 SAA547 JNB → DUR Jul 24, 09:25 UTCJul 24, 09:45 UTC20m
2026-07-24 SAA530 DUR → JNB Jul 24, 05:30 UTCJul 24, 05:45 UTC15m
2026-07-23 SAA419 JNB → PLZ Jul 23, 14:05 UTCJul 23, 14:30 UTC25m
2026-07-23 SAA405 JNB → PLZ Jul 23, 09:40 UTCJul 23, 12:55 UTC3h 15m
2026-07-23 SAA404 - Jul 23, 04:10 UTCJul 23, 07:20 UTC3h 10m
2026-07-22 SAA419 JNB → PLZ Jul 22, 14:10 UTCJul 22, 17:35 UTC3h 25m
2026-07-21 SAA585 JNB → DUR Jul 21, 19:25 UTCJul 22, 12:50 UTC17h 25m
2026-07-21 SAA419 JNB → PLZ Jul 21, 14:40 UTCJul 21, 17:50 UTC3h 10m
2026-07-21 SAA410 PLZ → JNB Jul 21, 09:55 UTCJul 21, 13:10 UTC3h 15m
2026-07-21 SAA404 - Jul 21, 04:10 UTCJul 21, 07:30 UTC3h 20m
2026-07-20 SAA362 CPT → JNB Jul 20, 16:20 UTCJul 20, 17:55 UTC1h 35m
2026-07-20 SAA347 - Jul 20, 13:35 UTCJul 20, 15:35 UTC2h 0m
2026-07-20 SAA332 CPT → JNB Jul 20, 10:50 UTCJul 20, 12:25 UTC1h 35m
2026-07-20 SAA319 JNB → CPT Jul 20, 07:45 UTCJul 20, 09:55 UTC2h 10m
2026-07-19 SAA024 JNB → JNB Jul 19, 18:10 UTCJul 20, 05:35 UTC11h 25m
2026-07-19 SAA566 DUR → JNB Jul 19, 13:25 UTCJul 19, 15:55 UTC2h 30m
2026-07-19 SAA556 - Jul 19, 09:30 UTCJul 19, 12:00 UTC2h 30m
2026-07-18 SAA362 CPT → JNB Jul 18, 16:25 UTCJul 18, 17:55 UTC1h 30m
2026-07-18 SAA347 - Jul 18, 13:35 UTCJul 18, 15:40 UTC2h 5m
2026-07-18 SAA035 - Jul 18, 11:10 UTCJul 18, 11:35 UTC25m
2026-07-18 SAA034 - Jul 18, 09:25 UTCJul 18, 09:50 UTC25m
2026-07-17 SAA530 DUR → JNB Jul 17, 19:25 UTCJul 18, 05:55 UTC10h 31m
2026-07-17 SAA354 CPT → JNB Jul 17, 15:49 UTCJul 17, 17:30 UTC1h 40m
2026-07-17 SAA343 - Jul 17, 12:50 UTCJul 17, 14:55 UTC2h 5m
2026-07-17 SAA326 CPT → JNB Jul 17, 09:30 UTCJul 17, 11:04 UTC1h 35m
2026-07-17 SAA313 JNB → CPT Jul 17, 06:25 UTCJul 17, 08:30 UTC2h 5m
2026-07-16 SAA372 - Jul 16, 18:29 UTCJul 16, 20:05 UTC1h 35m
2026-07-16 SAA359 JNB → CPT Jul 16, 15:45 UTCJul 16, 17:40 UTC1h 55m
2026-07-16 SAA063 - Jul 16, 09:05 UTCJul 16, 13:25 UTC4h 20m
2026-07-15 SAA419 - Jul 15, 14:40 UTCJul 15, 18:10 UTC3h 30m
2026-07-15 SAA410 JNB → JNB Jul 15, 09:55 UTCJul 15, 13:35 UTC3h 40m
2026-07-15 SAA538 - Jul 15, 05:45 UTCJul 15, 08:05 UTC2h 20m
2026-07-14 SAA422 - Jul 14, 14:15 UTCJul 14, 17:30 UTC3h 15m
2026-07-14 SAA405 - Jul 14, 09:50 UTCJul 14, 13:05 UTC3h 15m
2026-07-13 SAA067 - Jul 13, 18:05 UTCJul 14, 06:30 UTC12h 25m
2026-07-13 SAA041 - Jul 13, 11:20 UTCJul 13, 14:55 UTC3h 35m
2026-07-13 SAA316 - Jul 13, 09:15 UTCJul 13, 09:45 UTC30m
2026-07-13 SAA316 - Jul 13, 08:01 UTCJul 13, 08:20 UTC20m
2026-07-13 SAA303 - Jul 13, 04:30 UTCJul 13, 06:25 UTC1h 55m

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

Mode-S 00A51A frequently asked

What is Mode-S code 00A51A?
00A51A is an ICAO 24-bit transponder address. Allocated to South Africa. Assigned to ZS-SZH.
Where is Mode-S 00A51A registered?
Mode-S code 00A51A 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 00A51A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 00A51A, octal 00122432, decimal 42,266.
What flights does 00A51A operate?
Mode-S 00A51A has broadcast 20 distinct callsigns, including SAA410, SAA530, SAA419, SAA404, SAA313.