Apparatus

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sensors Mode-S transponder

00AD57

ICAO 24-bit transponder address · allocated to South Africa

Currently assigned to ZT-HCC

Hex
00AD57
Octal
00126527
Decimal
44,375
Country
ZA
Tail
ZT-HCC
Type
EC30
No current signal · last broadcast 18d ago
Flights observed
196
Distinct callsigns
20
Country
ZA
Last broadcast
18d ago

Last known position

Most recent position reported by Mode-S 00AD57.

Country allocation

The ICAO 24-bit address 00AD57 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
SFR417 - 5 2026-07-23
SFR269 - 5 2026-07-12
SFR605 - 4 2026-06-26
SFR568 Safair 4 2026-07-21
SFR339 - 4 2026-07-03
SFR315 - 4 2026-07-03
SFR311 - 4 2026-07-04
SFR310 - 4 2026-07-04
SFR206 - 4 2026-06-26
SFR179 Safair 4 2026-07-23
SFR691 - 3 2026-07-22
SFR690 Safair 3 2026-07-22
SFR660 - 3 2026-07-07
SFR604 - 3 2026-06-26
SFR295 - 3 2026-07-18
SFR294 - 3 2026-07-18
SFR290 - 3 2026-07-12
SFR233 - 3 2026-07-17
SFR207 - 3 2026-06-26
SFR189 - 3 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SFR245 ELS → JNB Jul 26, 18:00 UTCJul 26, 18:10 UTC10m
2026-07-26 SFR244 JNB → ELS Jul 26, 15:00 UTCJul 26, 15:15 UTC15m
2026-07-25 SFR901 JNB → DUR Jul 25, 07:25 UTCJul 25, 07:40 UTC15m
2026-07-24 SFR153 ELS → CPT Jul 24, 07:50 UTCJul 24, 08:20 UTC30m
2026-07-24 SFR152 CPT → ELS Jul 24, 05:00 UTCJul 24, 05:15 UTC15m
2026-07-23 SFR179 DUR → CPT Jul 23, 15:00 UTCJul 23, 18:45 UTC3h 45m
2026-07-23 SFR417 - Jul 23, 13:30 UTCJul 23, 14:00 UTC30m
2026-07-23 SFR178 CPT → DUR Jul 23, 10:20 UTCJul 23, 10:35 UTC15m
2026-07-23 FA315 HLA → CPT Jul 23, 07:10 UTCJul 23, 09:10 UTC2h 0m
2026-07-23 FA339 CPT → HLA Jul 23, 04:30 UTCJul 23, 06:15 UTC1h 45m
2026-07-22 SFR691 - Jul 22, 16:40 UTCJul 22, 18:30 UTC1h 50m
2026-07-22 SFR690 CPT → JNB Jul 22, 13:30 UTCJul 22, 15:10 UTC1h 40m
2026-07-22 SFR161 DUR → CPT Jul 22, 04:10 UTCJul 22, 12:25 UTC8h 15m
2026-07-21 SFR568 PLZ → CPT Jul 21, 17:05 UTCJul 21, 20:10 UTC3h 5m
2026-07-21 SFR637 - Jul 21, 10:25 UTCJul 21, 16:00 UTC5h 35m
2026-07-20 SFR9121 - Jul 20, 15:00 UTCJul 20, 17:00 UTC2h 0m
2026-07-20 SFR121 - Jul 20, 12:00 UTCJul 20, 13:10 UTC1h 10m
2026-07-20 SFR474 HLA → DUR Jul 20, 07:50 UTCJul 20, 10:35 UTC2h 45m
2026-07-20 SFR286 JNB → DUR Jul 20, 04:10 UTCJul 20, 06:55 UTC2h 45m
2026-07-19 SFR561 DUR → JNB Jul 19, 18:30 UTCJul 19, 21:00 UTC2h 30m
2026-07-19 SFR271 - Jul 19, 14:50 UTCJul 19, 17:25 UTC2h 35m
2026-07-19 SFR257 GRJ → HLA Jul 19, 09:35 UTCJul 19, 13:35 UTC4h 0m
2026-07-19 SFR231 PLZ → JNB Jul 19, 04:35 UTCJul 19, 08:15 UTC3h 40m
2026-07-18 SFR215 - Jul 18, 17:35 UTCJul 18, 19:10 UTC1h 35m
2026-07-18 SFR214 - Jul 18, 14:45 UTCJul 18, 16:45 UTC2h 0m
2026-07-18 SFR295 - Jul 18, 11:20 UTCJul 18, 12:55 UTC1h 35m
2026-07-18 SFR294 - Jul 18, 08:35 UTCJul 18, 10:35 UTC2h 0m
2026-07-18 SFR261 - Jul 18, 04:55 UTCJul 18, 07:25 UTC2h 30m
2026-07-17 SFR233 - Jul 17, 16:40 UTCJul 17, 20:10 UTC3h 30m
2026-07-17 SFR381 - Jul 17, 13:10 UTCJul 17, 14:55 UTC1h 45m
2026-07-17 SFR380 - Jul 17, 10:20 UTCJul 17, 12:19 UTC2h 0m
2026-07-17 SFR283 - Jul 17, 06:25 UTCJul 17, 08:49 UTC2h 25m
2026-07-16 SFR289 - Jul 16, 14:50 UTCJul 16, 17:10 UTC2h 20m
2026-07-16 SFR221 - Jul 16, 09:50 UTCJul 16, 13:45 UTC3h 55m
2026-07-16 SFR370 - Jul 16, 04:40 UTCJul 16, 08:10 UTC3h 30m
2026-07-15 SFR511 - Jul 15, 14:35 UTCJul 15, 17:05 UTC2h 30m
2026-07-15 SFR849 - Jul 15, 13:00 UTCJul 15, 13:35 UTC35m
2026-07-15 SFR848 - Jul 15, 11:05 UTCJul 15, 11:20 UTC15m
2026-07-14 SFR593 CPT → JNB Jul 14, 10:40 UTCJul 14, 12:15 UTC1h 35m
2026-07-14 SFR592 - Jul 14, 07:45 UTCJul 14, 09:45 UTC2h 0m
2026-07-14 SFR590 - Jul 14, 04:30 UTCJul 14, 06:45 UTC2h 15m
2026-07-13 SFR233 - Jul 13, 15:45 UTCJul 13, 19:20 UTC3h 35m
2026-07-13 SFR453 - Jul 13, 12:00 UTCJul 13, 14:35 UTC2h 35m
2026-07-13 SFR451 - Jul 13, 05:15 UTCJul 13, 10:15 UTC5h 0m
2026-07-12 SFR269 - Jul 12, 16:30 UTCJul 12, 18:55 UTC2h 25m
2026-07-12 SFR291 - Jul 12, 13:50 UTCJul 12, 15:25 UTC1h 35m
2026-07-12 SFR290 - Jul 12, 11:01 UTCJul 12, 12:55 UTC1h 55m
2026-07-11 SFR289 - Jul 11, 14:35 UTCJul 11, 17:15 UTC2h 40m
2026-07-11 SFR221 - Jul 11, 13:20 UTCJul 11, 13:40 UTC20m
2026-07-11 SFR220 - Jul 11, 09:50 UTCJul 11, 10:05 UTC15m

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 ZT-HCC page for operator, model, and routing details .

Mode-S 00AD57 frequently asked

What is Mode-S code 00AD57?
00AD57 is an ICAO 24-bit transponder address. Allocated to South Africa. Assigned to ZT-HCC.
Where is Mode-S 00AD57 registered?
Mode-S code 00AD57 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 00AD57 broadcasting right now?
No active broadcast right now. Last signal was 18d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 00AD57, octal 00126527, decimal 44,375.
What flights does 00AD57 operate?
Mode-S 00AD57 has broadcast 20 distinct callsigns, including SFR417, SFR269, SFR605, SFR568, SFR339.