Apparatus

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sensors Mode-S transponder

00B091

ICAO 24-bit transponder address · allocated to South Africa

Currently assigned to ZS-SJO · BOEING 737-800

Hex
00B091
Octal
00130221
Decimal
45,201
Country
ZA
Tail
ZS-SJO
Type
B738
No current signal · last broadcast Apr 25, 18:55 UTC
Flights observed
55
Distinct callsigns
20
Country
ZA
Last broadcast
Apr 25, 18:55 UTC

Last known position

Most recent position reported by Mode-S 00B091.

Country allocation

The ICAO 24-bit address 00B091 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
SFR691 Safair 3 2026-04-19
SFR315 Safair 3 2026-04-18
SFR668 Safair 2 2026-04-23
SFR381 Safair 2 2026-04-16
SFR380 Safair 2 2026-04-16
SFR361 Safair 2 2026-04-24
SFR293 Safair 2 2026-04-20
SFR292 Safair 2 2026-04-20
SFR289 Safair 2 2026-04-14
SFR839 Safair 1 2026-04-23
SFR838 Safair 1 2026-04-23
SFR829 Safair 1 2026-04-13
SFR828 - 1 2026-04-13
SFR690 Safair 1 2026-04-19
SFR660 Safair 1 2026-04-19
SFR633 Safair 1 2026-04-17
SFR632 Safair 1 2026-04-17
SFR453 Safair 1 2026-04-23
SFR424 Safair 1 2026-04-21
SFR418 Safair 1 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-04-25 SFR215 CPT → JNB Apr 25, 17:25 UTCApr 25, 18:55 UTC1h 30m
2026-04-25 SFR214 JNB → CPT Apr 25, 14:30 UTCApr 25, 16:30 UTC2h 0m
2026-04-25 SFR345 DUR → JNB Apr 25, 10:45 UTCApr 25, 13:25 UTC2h 40m
2026-04-25 SFR258 JNB → GRJ Apr 25, 05:45 UTCApr 25, 09:40 UTC3h 55m
2026-04-24 SFR248 JNB → ELS Apr 24, 14:35 UTCApr 24, 17:40 UTC3h 5m
2026-04-24 SFR361 PLZ → JNB Apr 24, 09:35 UTCApr 24, 13:20 UTC3h 45m
2026-04-24 SFR251 GRJ → JNB Apr 24, 04:15 UTCApr 24, 08:05 UTC3h 50m
2026-04-23 SFR839 BFN → JNB Apr 23, 18:15 UTCApr 23, 18:35 UTC20m
2026-04-23 SFR838 JNB → BFN Apr 23, 16:20 UTCApr 23, 16:35 UTC15m
2026-04-23 SFR379 ELS → JNB Apr 23, 12:10 UTCApr 23, 15:25 UTC3h 15m
2026-04-23 SFR453 DUR → JNB Apr 23, 08:40 UTCApr 23, 10:55 UTC2h 15m
2026-04-23 SFR668 DUR → JNB Apr 23, 04:35 UTCApr 23, 05:00 UTC25m
2026-04-22 SFR668 DUR → JNB Apr 22, 06:45 UTCApr 23, 05:00 UTC22h 15m
2026-04-21 SFR414 JNB → DUR Apr 21, 10:25 UTCApr 22, 05:30 UTC19h 5m
2026-04-21 SFR413 DUR → JNB Apr 21, 06:45 UTCApr 21, 09:20 UTC2h 35m
2026-04-21 SFR424 DUR → JNB Apr 21, 05:10 UTCApr 21, 05:40 UTC30m
2026-04-20 SFR170 CPT → DUR Apr 20, 16:55 UTCApr 20, 17:05 UTC10m
2026-04-20 SFR031 PLZ → CPT Apr 20, 13:30 UTCApr 20, 13:45 UTC15m
2026-04-20 SFR130 CPT → PLZ Apr 20, 10:50 UTCApr 20, 11:00 UTC10m
2026-04-20 SFR292 JNB → CPT Apr 20, 09:40 UTCApr 20, 09:55 UTC15m
2026-04-20 SFR292 JNB → CPT Apr 20, 08:00 UTCApr 20, 08:20 UTC20m
2026-04-20 SFR293 CPT → JNB Apr 20, 06:45 UTCApr 20, 07:10 UTC25m
2026-04-20 SFR293 CPT → JNB Apr 20, 05:30 UTCApr 20, 05:40 UTC10m
2026-04-19 SFR691 JNB → CPT Apr 19, 16:40 UTCApr 19, 18:40 UTC2h 0m
2026-04-19 SFR690 CPT → JNB Apr 19, 13:35 UTCApr 19, 15:20 UTC1h 45m
2026-04-19 SFR161 DUR → CPT Apr 19, 09:00 UTCApr 19, 12:45 UTC3h 45m
2026-04-19 SFR660 DUR → JNB Apr 19, 04:25 UTCApr 19, 07:45 UTC3h 20m
2026-04-18 SFR418 JNB → DUR Apr 18, 14:55 UTCApr 18, 18:40 UTC3h 45m
2026-04-18 SFR417 DUR → JNB Apr 18, 10:15 UTCApr 18, 13:50 UTC3h 35m
2026-04-18 SFR315 HLA → CPT Apr 18, 08:50 UTCApr 18, 09:10 UTC20m
2026-04-18 SFR315 HLA → CPT Apr 18, 07:25 UTCApr 18, 07:35 UTC10m
2026-04-18 SFR315 HLA → CPT Apr 18, 07:10 UTCApr 18, 07:35 UTC25m
2026-04-18 SFR339 CPT → HLA Apr 18, 05:50 UTCApr 18, 06:10 UTC20m
2026-04-17 SFR691 JNB → CPT Apr 17, 18:30 UTCApr 17, 18:45 UTC15m
2026-04-17 SFR691 JNB → CPT Apr 17, 16:50 UTCApr 17, 17:10 UTC20m
2026-04-17 SFR633 PLZ → JNB Apr 17, 09:30 UTCApr 17, 09:50 UTC20m
2026-04-17 SFR632 JNB → PLZ Apr 17, 06:25 UTCApr 17, 06:45 UTC20m
2026-04-16 SFR381 CPT → JNB Apr 16, 14:05 UTCApr 16, 14:25 UTC20m
2026-04-16 SFR381 CPT → JNB Apr 16, 12:49 UTCApr 16, 13:05 UTC15m
2026-04-16 SFR380 JNB → CPT Apr 16, 11:29 UTCApr 16, 11:54 UTC25m
2026-04-16 SFR380 JNB → CPT Apr 16, 09:59 UTCApr 16, 10:19 UTC20m
2026-04-16 SFR283 DUR → JNB Apr 16, 08:19 UTCApr 16, 08:50 UTC30m
2026-04-16 SFR282 JNB → DUR Apr 16, 06:15 UTCApr 16, 06:40 UTC25m
2026-04-15 SFR249 ELS → JNB Apr 15, 17:30 UTCApr 15, 17:45 UTC15m
2026-04-15 SFR361 PLZ → JNB Apr 15, 13:05 UTCApr 15, 13:40 UTC35m
2026-04-15 SFR360 JNB → PLZ Apr 15, 09:55 UTCApr 15, 10:15 UTC20m
2026-04-14 SFR289 DUR → JNB Apr 14, 16:50 UTCApr 14, 17:00 UTC10m
2026-04-14 SFR289 DUR → JNB Apr 14, 14:50 UTCApr 14, 16:45 UTC1h 55m
2026-04-14 SFR288 - Apr 14, 14:35 UTCApr 14, 14:45 UTC10m
2026-04-14 SFR221 GRJ → JNB Apr 14, 12:55 UTCApr 14, 13:30 UTC35m

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

Mode-S 00B091 frequently asked

What is Mode-S code 00B091?
00B091 is an ICAO 24-bit transponder address. Allocated to South Africa. Assigned to ZS-SJO.
Where is Mode-S 00B091 registered?
Mode-S code 00B091 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 00B091 broadcasting right now?
No active broadcast right now. Last signal was Apr 25, 18:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 00B091, octal 00130221, decimal 45,201.
What flights does 00B091 operate?
Mode-S 00B091 has broadcast 20 distinct callsigns, including SFR691, SFR315, SFR668, SFR381, SFR380.