Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 11h ago
Flights observed
258
Distinct callsigns
20
Country
ZA
Last broadcast
11h ago

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 - 13 2026-07-09
SAA530 - 10 2026-06-30
SAA422 - 10 2026-07-14
SAA313 - 10 2026-07-03
SAA404 - 9 2026-07-09
SAA562 - 8 2026-07-01
SAA556 - 8 2026-07-12
SAA419 - 8 2026-07-04
SAA405 - 8 2026-07-14
SAA372 South African Airways 8 2026-06-03
SAA546 - 7 2026-07-01
SAA352 - 7 2026-06-27
SAA337 - 7 2026-06-27
SAA041 - 7 2026-07-13
SAA366 - 6 2026-07-06
SAA354 - 6 2026-07-03
SAA327 - 6 2026-07-08
SAA326 - 6 2026-07-03
SAA076 - 6 2026-07-02
SAA375 - 5 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-12 SAA566 - Jul 12, 13:25 UTCJul 12, 15:55 UTC2h 30m
2026-07-12 SAA556 - Jul 12, 09:25 UTCJul 12, 11:55 UTC2h 30m
2026-07-11 SAA041 - Jul 11, 10:15 UTCJul 11, 14:00 UTC3h 45m
2026-07-11 SAA306 - Jul 11, 05:10 UTCJul 11, 06:40 UTC1h 30m
2026-07-10 SAA363 - Jul 10, 17:10 UTCJul 10, 19:00 UTC1h 50m
2026-07-10 SAA563 - Jul 10, 13:25 UTCJul 10, 16:00 UTC2h 35m
2026-07-10 SAA556 - Jul 10, 09:40 UTCJul 10, 12:00 UTC2h 20m
2026-07-10 SAA306 CPT → JNB Jul 10, 05:00 UTCJul 10, 06:40 UTC1h 40m
2026-07-09 SAA375 - Jul 9, 19:25 UTCJul 9, 21:15 UTC1h 50m
2026-07-09 SAA422 - Jul 9, 14:35 UTCJul 9, 17:45 UTC3h 10m
2026-07-09 SAA410 - Jul 9, 10:00 UTCJul 9, 13:25 UTC3h 25m
2026-07-09 SAA404 - Jul 9, 04:10 UTCJul 9, 07:30 UTC3h 20m
2026-07-08 SAA578 - Jul 8, 15:20 UTCJul 8, 17:45 UTC2h 25m
2026-07-08 SAA342 CPT → JNB Jul 8, 12:25 UTCJul 8, 14:00 UTC1h 35m
2026-07-08 SAA327 - Jul 8, 09:30 UTCJul 8, 11:20 UTC1h 50m
2026-07-08 SAA404 - Jul 8, 04:15 UTCJul 8, 07:30 UTC3h 15m
2026-07-07 SAA362 CPT → JNB Jul 7, 16:35 UTCJul 7, 18:15 UTC1h 40m
2026-07-07 SAA347 - Jul 7, 13:55 UTCJul 7, 15:50 UTC1h 55m
2026-07-07 SAA332 - Jul 7, 10:30 UTCJul 7, 12:10 UTC1h 40m
2026-07-07 SAA319 - Jul 7, 07:35 UTCJul 7, 09:30 UTC1h 55m
2026-07-06 SAA366 - Jul 6, 19:00 UTCJul 6, 19:20 UTC20m
2026-07-06 SAA366 - Jul 6, 17:45 UTCJul 6, 18:05 UTC20m
2026-07-06 SAA355 JNB → CPT Jul 6, 15:05 UTCJul 6, 17:00 UTC1h 55m
2026-07-06 SAA558 - Jul 6, 11:20 UTCJul 6, 14:05 UTC2h 45m
2026-07-06 SAA316 - Jul 6, 07:00 UTCJul 6, 08:40 UTC1h 40m
2026-07-06 SAA303 - Jul 6, 04:15 UTCJul 6, 06:10 UTC1h 55m
2026-07-05 SAA566 - Jul 5, 14:05 UTCJul 5, 16:35 UTC2h 30m
2026-07-05 SAA556 - Jul 5, 10:10 UTCJul 5, 12:50 UTC2h 40m
2026-07-04 SAA419 - Jul 4, 14:35 UTCJul 4, 17:45 UTC3h 10m
2026-07-04 SAA405 - Jul 4, 10:05 UTCJul 4, 13:30 UTC3h 25m
2026-07-04 SAA404 - Jul 4, 04:10 UTCJul 4, 07:25 UTC3h 15m
2026-07-03 SAA354 - Jul 3, 15:35 UTCJul 3, 17:10 UTC1h 35m
2026-07-03 SA343 - Jul 3, 12:50 UTCJul 3, 14:50 UTC2h 0m
2026-07-03 SAA326 CPT → JNB Jul 3, 09:20 UTCJul 3, 11:00 UTC1h 40m
2026-07-03 SAA313 - Jul 3, 06:30 UTCJul 3, 08:30 UTC2h 0m
2026-07-02 SAA076 QRA → JNB Jul 2, 13:45 UTCJul 2, 17:45 UTC4h 0m
2026-07-02 SAA022 JNB → JNB Jul 2, 08:35 UTCJul 2, 12:15 UTC3h 40m
2026-07-01 SAA066 - Jul 1, 17:45 UTCJul 2, 06:25 UTC12h 40m
2026-07-01 SAA562 - Jul 1, 12:25 UTCJul 1, 15:00 UTC2h 35m
2026-07-01 SAA546 - Jul 1, 07:30 UTCJul 1, 10:00 UTC2h 30m
2026-06-30 SAA530 - Jun 30, 19:25 UTCJul 1, 06:10 UTC10h 45m
2026-06-30 SAA419 - Jun 30, 14:20 UTCJun 30, 17:35 UTC3h 15m
2026-06-30 SAA410 - Jun 30, 09:50 UTCJun 30, 13:30 UTC3h 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.

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 11h ago.
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, SAA422, SAA313, SAA404.