Apparatus

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sensors Mode-S transponder

00B031

ICAO 24-bit transponder address · allocated to South Africa

Currently assigned to ZS-SFW · EUROCOPTER BK117 C-1/2

Hex
00B031
Octal
00130061
Decimal
45,105
Country
ZA
Tail
ZS-SFW
Type
BK17
No current signal · last broadcast 4h ago
Flights observed
145
Distinct callsigns
20
Country
ZA
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 00B031.

Country allocation

The ICAO 24-bit address 00B031 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
LNK921L - 8 2026-07-07
LNK111M - 8 2026-07-11
LNK107B - 8 2026-07-11
LNK277B - 7 2026-07-09
LNK253F - 6 2026-07-01
LNK651R - 5 2026-07-10
LNK951A - 4 2026-07-09
LNK552N - 4 2026-06-30
LNK181T - 4 2026-07-10
LNK180S - 4 2026-07-10
LNK141A - 4 2026-07-12
LNK109K - 4 2026-06-28
LNK924C - 3 2026-06-30
LNK694E Airlink 3 2026-06-05
LNK693D Airlink 3 2026-05-22
LNK124R - 3 2026-07-02
LNK928S - 2 2026-06-24
LNK927R - 2 2026-06-30
LNK926Q - 2 2026-06-27
LNK923N - 2 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 LNK100B - Jul 14, 04:40 UTCJul 14, 05:10 UTC30m
2026-07-13 LNK102D - Jul 13, 16:25 UTCJul 13, 19:55 UTC3h 30m
2026-07-13 LNK261H - Jul 13, 11:35 UTCJul 13, 15:10 UTC3h 35m
2026-07-13 LNK734C - Jul 13, 05:31 UTCJul 13, 09:50 UTC4h 20m
2026-07-12 LNK141A - Jul 12, 08:55 UTCJul 12, 13:55 UTC5h 0m
2026-07-11 LNK107B - Jul 11, 12:55 UTCJul 11, 16:45 UTC3h 50m
2026-07-11 LNK111M - Jul 11, 09:00 UTCJul 11, 11:55 UTC2h 55m
2026-07-10 LNK181T - Jul 10, 15:20 UTCJul 10, 15:50 UTC30m
2026-07-10 LNK180S - Jul 10, 13:45 UTCJul 10, 14:05 UTC20m
2026-07-10 LNK651R - Jul 10, 08:50 UTCJul 10, 12:30 UTC3h 40m
2026-07-09 LNK951A - Jul 9, 14:45 UTCJul 9, 16:40 UTC1h 55m
2026-07-09 LNK085W - Jul 9, 11:25 UTCJul 9, 13:30 UTC2h 5m
2026-07-09 LNK277B - Jul 9, 06:20 UTCJul 9, 08:50 UTC2h 30m
2026-07-08 LNK181T - Jul 8, 15:25 UTCJul 8, 15:50 UTC25m
2026-07-08 LNK180S - Jul 8, 13:40 UTCJul 8, 14:05 UTC25m
2026-07-08 LNK651R - Jul 8, 08:50 UTCJul 8, 12:25 UTC3h 35m
2026-07-07 LNK342D CPT → CPT Jul 7, 09:10 UTCJul 7, 13:55 UTC4h 45m
2026-07-07 LNK921L - Jul 7, 05:40 UTCJul 7, 07:35 UTC1h 55m
2026-07-06 LNK461U - Jul 6, 09:30 UTCJul 6, 14:25 UTC4h 55m
2026-07-05 LNK382L - Jul 5, 12:20 UTCJul 6, 06:40 UTC18h 20m
2026-07-05 LNK382L - Jul 5, 12:05 UTCJul 6, 06:40 UTC18h 35m
2026-07-05 LNK921L - Jul 5, 05:55 UTCJul 5, 07:50 UTC1h 55m
2026-07-04 LNK107B - Jul 4, 13:20 UTCJul 4, 17:25 UTC4h 5m
2026-07-04 LNK111M - Jul 4, 09:10 UTCJul 4, 11:55 UTC2h 45m
2026-07-03 LNK569Q JNB → DUR Jul 3, 17:00 UTCJul 4, 06:05 UTC13h 5m
2026-07-03 LNK461U - Jul 3, 09:55 UTCJul 3, 14:55 UTC5h 0m
2026-07-02 LNK727X - Jul 2, 14:55 UTCJul 2, 17:10 UTC2h 15m
2026-07-02 LNK124R - Jul 2, 09:10 UTCJul 2, 13:35 UTC4h 25m
2026-07-01 LNK253F - Jul 1, 08:25 UTCJul 1, 14:55 UTC6h 30m
2026-06-30 LNK552N - Jun 30, 16:45 UTCJul 1, 06:30 UTC13h 45m
2026-06-30 LNK924C - Jun 30, 13:35 UTCJun 30, 15:15 UTC1h 40m
2026-06-30 LNK927R - Jun 30, 09:00 UTCJun 30, 11:00 UTC2h 0m
2026-06-29 LNK743G - Jun 29, 15:00 UTCJun 29, 17:10 UTC2h 10m
2026-06-29 LNK142B - Jun 29, 08:44 UTCJun 29, 13:39 UTC4h 55m
2026-06-28 LNK109K - Jun 28, 13:40 UTCJun 29, 06:40 UTC17h 0m
2026-06-28 LNK921L - Jun 28, 05:45 UTCJun 28, 14:04 UTC8h 20m
2026-06-27 LNK151T - Jun 27, 08:35 UTCJun 27, 13:40 UTC5h 5m
2026-06-27 LNK926Q - Jun 27, 04:19 UTCJun 27, 05:59 UTC1h 40m
2026-06-25 LNK391C - Jun 25, 13:55 UTCJun 25, 14:20 UTC25m
2026-06-25 LNK390N - Jun 25, 07:54 UTCJun 25, 08:24 UTC30m
2026-06-24 LNK929T - Jun 24, 15:54 UTCJun 24, 17:50 UTC1h 55m
2026-06-24 LNK928S - Jun 24, 12:25 UTCJun 24, 14:20 UTC1h 55m
2026-06-23 LNK638C - Jun 23, 15:24 UTCJun 23, 15:55 UTC30m
2026-06-23 LNK637N - Jun 23, 13:59 UTCJun 23, 14:19 UTC20m
2026-06-23 LNK923N - Jun 23, 10:59 UTCJun 23, 13:00 UTC2h 0m
2026-06-23 LNK922M - Jun 23, 07:19 UTCJun 23, 08:54 UTC1h 35m
2026-06-21 LNK638C GRJ → CPT Jun 21, 13:34 UTCJun 21, 15:34 UTC2h 0m
2026-06-21 LNK923N - Jun 21, 10:40 UTCJun 21, 12:24 UTC1h 45m
2026-06-21 LNK922M - Jun 21, 07:20 UTCJun 21, 09:00 UTC1h 40m
2026-06-20 LNK951A JNB → CPT Jun 20, 14:35 UTCJun 20, 16:24 UTC1h 50m

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

Mode-S 00B031 frequently asked

What is Mode-S code 00B031?
00B031 is an ICAO 24-bit transponder address. Allocated to South Africa. Assigned to ZS-SFW.
Where is Mode-S 00B031 registered?
Mode-S code 00B031 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 00B031 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 00B031, octal 00130061, decimal 45,105.
What flights does 00B031 operate?
Mode-S 00B031 has broadcast 20 distinct callsigns, including LNK921L, LNK111M, LNK107B, LNK277B, LNK253F.