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sensors Mode-S transponder

406B0A

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-STBK · BOEING 777-300ER

Hex
406B0A
Octal
20065412
Decimal
4,221,706
Country
GB
Tail
G-STBK
Type
B77W
No current signal · last broadcast 20m ago
Flights observed
177
Distinct callsigns
20
Country
GB
Last broadcast
20m ago

Last known position

Most recent position reported by Mode-S 406B0A.

Country allocation

The ICAO 24-bit address 406B0A falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom 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
BAW97A - 10 2026-07-14
BAW6B British Airways 10 2026-07-07
BAW49 - 10 2026-07-07
BAW48Q - 10 2026-07-08
BAW29C - 9 2026-07-06
BAW28K British Airways 9 2026-07-06
BAW28F - 9 2026-07-14
BAW21B - 9 2026-07-13
BAW196E - 9 2026-07-15
BAW293 - 8 2026-07-05
BAW15K British Airways 8 2026-07-02
BAW14K - 8 2026-06-27
BAW9SW - 7 2026-07-05
BAW82P British Airways 7 2026-07-04
BAW33K British Airways 7 2026-06-26
BAW116 - 7 2026-07-03
BAW11 - 7 2026-07-15
BAW8DS - 5 2026-07-17
BAW283 - 5 2026-07-17
BAW12 - 4 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 BAW8DS - Jul 17, 23:10 UTCJul 18, 02:25 UTC3h 15m
2026-07-17 BAW283 - Jul 17, 10:00 UTCJul 17, 20:25 UTC10h 25m
2026-07-16 BAW12 - Jul 16, 15:49 UTCJul 17, 05:15 UTC13h 25m
2026-07-15 BAW11 - Jul 15, 19:15 UTCJul 16, 08:10 UTC12h 55m
2026-07-15 BAW196E - Jul 15, 02:20 UTCJul 15, 11:20 UTC9h 0m
2026-07-14 BAW97A - Jul 14, 14:40 UTCJul 14, 23:40 UTC8h 59m
2026-07-14 BAW97A - Jul 14, 14:15 UTCJul 14, 14:35 UTC20m
2026-07-14 BAW28F - Jul 14, 00:30 UTCJul 14, 10:20 UTC9h 50m
2026-07-13 BAW21B - Jul 13, 11:15 UTCJul 13, 21:50 UTC10h 35m
2026-07-12 BAW11J JFK → LHR Jul 12, 23:05 UTCJul 13, 05:31 UTC6h 25m
2026-07-12 BAW181 LHR → JFK Jul 12, 12:01 UTCJul 12, 18:45 UTC6h 45m
2026-07-11 BAW8DS - Jul 11, 23:20 UTCJul 12, 09:05 UTC9h 45m
2026-07-11 BAW283 - Jul 11, 10:05 UTCJul 11, 20:35 UTC10h 30m
2026-07-10 BAW40F JFK → LHR Jul 10, 23:15 UTCJul 11, 05:31 UTC6h 15m
2026-07-10 BAW173A LHR → JFK Jul 10, 11:20 UTCJul 10, 18:35 UTC7h 15m
2026-07-09 BAW12 - Jul 9, 15:50 UTCJul 10, 05:15 UTC13h 25m
2026-07-08 BAW11 - Jul 8, 19:25 UTCJul 9, 08:00 UTC12h 35m
2026-07-08 BAW48Q SEA → LHR Jul 8, 04:05 UTCJul 8, 13:05 UTC9h 0m
2026-07-07 BAW49 - Jul 7, 16:05 UTCJul 8, 01:25 UTC9h 20m
2026-07-07 BAW6B SFO → LHR Jul 7, 03:15 UTCJul 7, 12:40 UTC9h 25m
2026-07-06 BAW28K LHR → SFO Jul 6, 14:20 UTCJul 7, 00:55 UTC10h 35m
2026-07-06 BAW29C IAD → LHR Jul 6, 04:35 UTCJul 6, 11:20 UTC6h 45m
2026-07-05 BAW293 - Jul 5, 17:00 UTCJul 6, 01:15 UTC8h 15m
2026-07-05 BAW9SW - Jul 5, 02:55 UTCJul 5, 12:50 UTC9h 55m
2026-07-04 BAW82P LHR → SAN Jul 4, 14:10 UTCJul 5, 00:45 UTC10h 35m
2026-07-04 BAW28F - Jul 4, 00:40 UTCJul 4, 10:40 UTC10h 0m
2026-07-03 BAW21B - Jul 3, 11:00 UTCJul 3, 21:40 UTC10h 40m
2026-07-03 BAW116 JFK → LHR Jul 3, 01:00 UTCJul 3, 07:30 UTC6h 30m
2026-07-02 BAW15K LHR → JFK Jul 2, 15:05 UTCJul 2, 22:25 UTC7h 20m
2026-07-01 BAW8DS - Jul 1, 23:35 UTCJul 2, 08:55 UTC9h 20m
2026-07-01 BAW283 LHR → LAX Jul 1, 10:05 UTCJul 1, 20:40 UTC10h 35m
2026-06-30 BAW180 - Jun 30, 23:40 UTCJul 1, 05:55 UTC6h 15m
2026-06-30 BAW04A - Jun 30, 12:50 UTCJun 30, 19:45 UTC6h 55m
2026-06-30 BAW29C IAD → LHR Jun 30, 03:25 UTCJun 30, 10:00 UTC6h 35m
2026-06-29 BAW293 - Jun 29, 16:44 UTCJun 30, 00:04 UTC7h 20m
2026-06-29 BAW48Q SEA → LHR Jun 29, 03:49 UTCJun 29, 12:49 UTC9h 0m
2026-06-28 BAW49 - Jun 28, 16:09 UTCJun 29, 00:49 UTC8h 40m
2026-06-28 BAW29C IAD → LHR Jun 28, 03:05 UTCJun 28, 09:30 UTC6h 25m
2026-06-27 BAW293 - Jun 27, 17:39 UTCJun 28, 00:50 UTC7h 10m
2026-06-27 BAW14K JFK → LHR Jun 27, 02:09 UTCJun 27, 08:39 UTC6h 30m
2026-06-26 BAW33K LHR → JFK Jun 26, 16:14 UTCJun 26, 23:09 UTC6h 55m
2026-06-26 BAW6B SFO → LHR Jun 26, 02:40 UTCJun 26, 12:39 UTC10h 0m
2026-06-25 BAW28K LHR → SFO Jun 25, 13:55 UTCJun 26, 00:10 UTC10h 15m
2026-06-25 BAW14K JFK → LHR Jun 25, 02:39 UTCJun 25, 08:45 UTC6h 5m
2026-06-24 BAW33K LHR → JFK Jun 24, 16:19 UTCJun 25, 00:05 UTC7h 45m
2026-06-22 BAW8DS - Jun 22, 23:20 UTCJun 23, 09:20 UTC10h 0m
2026-06-22 BAW283 LHR → LAX Jun 22, 10:00 UTCJun 22, 20:34 UTC10h 35m
2026-06-21 BAW9SW - Jun 21, 04:34 UTCJun 21, 14:30 UTC9h 55m
2026-06-20 BAW82P LHR → SAN Jun 20, 15:39 UTCJun 21, 02:20 UTC10h 40m
2026-06-20 BAW28F - Jun 20, 00:29 UTCJun 20, 10:09 UTC9h 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 G-STBK page for operator, model, and routing details .

Mode-S 406B0A frequently asked

What is Mode-S code 406B0A?
406B0A is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-STBK.
Where is Mode-S 406B0A registered?
Mode-S code 406B0A is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 406B0A broadcasting right now?
No active broadcast right now. Last signal was 20m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406B0A, octal 20065412, decimal 4,221,706.
What flights does 406B0A operate?
Mode-S 406B0A has broadcast 20 distinct callsigns, including BAW97A, BAW6B, BAW49, BAW48Q, BAW29C.