Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 8h ago
Flights observed
104
Distinct callsigns
20
Country
GB
Last broadcast
8h 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
BAW49 British Airways 8 2026-05-06
BAW48Q British Airways 8 2026-05-07
BAW6B British Airways 6 2026-04-23
BAW28F British Airways 6 2026-06-01
BAW21B British Airways 6 2026-05-31
BAW14K British Airways 6 2026-05-25
BAW97A British Airways 5 2026-05-29
BAW33K British Airways 5 2026-05-24
BAW28K British Airways 5 2026-04-22
BAW196E British Airways 5 2026-05-30
BAW15K British Airways 5 2026-05-30
BAW116 British Airways 5 2026-05-31
BAW11 British Airways 5 2026-05-07
BAW9SW British Airways 4 2026-06-02
BAW82P British Airways 4 2026-06-01
BAW29C British Airways 4 2026-04-16
BAW293 British Airways 3 2026-04-15
BAW180 British Airways 2 2026-05-28
BAW12 British Airways 2 2026-05-08
BAW04A British Airways 2 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 BAW9SW SAN → LHR Jun 2, 02:55 UTCJun 2, 12:50 UTC9h 55m
2026-06-01 BAW82P LHR → SAN Jun 1, 14:15 UTCJun 2, 00:30 UTC10h 15m
2026-06-01 BAW28F LAX → LHR Jun 1, 00:10 UTCJun 1, 10:15 UTC10h 5m
2026-05-31 BAW21B LHR → LAX May 31, 11:10 UTCMay 31, 21:25 UTC10h 15m
2026-05-31 BAW116 JFK → LHR May 31, 01:10 UTCMay 31, 01:11 UTC1m
2026-05-30 BAW15K LHR → JFK May 30, 15:00 UTCMay 30, 22:10 UTC7h 10m
2026-05-30 BAW196E IAH → LHR May 30, 02:30 UTCMay 30, 11:10 UTC8h 40m
2026-05-29 BAW97A LHR → IAH May 29, 14:15 UTCMay 29, 23:45 UTC9h 30m
2026-05-28 BAW8DS LAX → LHR May 28, 23:05 UTCMay 29, 09:15 UTC10h 10m
2026-05-28 BAW283 LHR → LAX May 28, 10:05 UTCMay 28, 20:35 UTC10h 30m
2026-05-28 BAW180 EWR → LHR May 28, 00:10 UTCMay 28, 06:35 UTC6h 25m
2026-05-27 BAW04A JFK → LHR May 27, 12:55 UTCMay 27, 19:45 UTC6h 50m
2026-05-26 BAW116 JFK → LHR May 26, 00:54 UTCMay 26, 07:29 UTC6h 35m
2026-05-25 BAW15K LHR → JFK May 25, 15:15 UTCMay 25, 22:15 UTC6h 59m
2026-05-25 BAW14K JFK → LHR May 25, 05:30 UTCMay 25, 12:00 UTC6h 30m
2026-05-24 BAW33K LHR → JFK May 24, 19:55 UTCMay 25, 02:55 UTC7h 0m
2026-05-24 BAW196E IAH → LHR May 24, 02:50 UTCMay 24, 11:20 UTC8h 30m
2026-05-23 BAW97A LHR → IAH May 23, 14:25 UTCMay 24, 00:30 UTC10h 6m
2026-05-23 BAW28F LAX → LHR May 23, 00:20 UTCMay 23, 10:15 UTC9h 55m
2026-05-22 BAW21B LHR → LAX May 22, 11:20 UTCMay 22, 21:35 UTC10h 16m
2026-05-21 BAW40F JFK → LHR May 21, 23:15 UTCMay 22, 05:20 UTC6h 5m
2026-05-21 BAW173A LHR → JFK May 21, 11:00 UTCMay 21, 18:00 UTC7h 0m
2026-05-19 BAW180 EWR → LHR May 19, 00:30 UTCMay 19, 07:00 UTC6h 30m
2026-05-18 BAW04A JFK → LHR May 18, 13:00 UTCMay 18, 19:50 UTC6h 49m
2026-05-18 BAW290 LHR → IAD May 18, 03:20 UTCMay 18, 09:50 UTC6h 30m
2026-05-17 BAW291 LHR → SFO May 17, 17:25 UTCMay 18, 00:45 UTC7h 20m
2026-05-17 BAW9SW SAN → LHR May 17, 03:25 UTCMay 17, 13:01 UTC9h 35m
2026-05-16 BAW82P LHR → SAN May 16, 14:35 UTCMay 17, 01:00 UTC10h 25m
2026-05-16 BAW28F LAX → LHR May 16, 00:25 UTCMay 16, 09:56 UTC9h 31m
2026-05-15 BAW21B LHR → LAX May 15, 11:15 UTCMay 15, 21:55 UTC10h 39m
2026-05-15 BAW116 JFK → LHR May 15, 01:45 UTCMay 15, 07:45 UTC6h 0m
2026-05-14 BAW15K LHR → JFK May 14, 15:30 UTCMay 14, 22:55 UTC7h 25m
2026-05-14 BAW14K JFK → LHR May 14, 09:15 UTCMay 14, 10:31 UTC1h 15m
2026-05-14 BAW14K JFK → LHR May 14, 04:25 UTCMay 14, 05:45 UTC1h 20m
2026-05-13 BAW33K LHR → JFK May 13, 18:50 UTCMay 14, 02:05 UTC7h 15m
2026-05-11 BAW9SW SAN → LHR May 11, 03:00 UTCMay 11, 13:15 UTC10h 15m
2026-05-10 BAW82P LHR → SAN May 10, 14:14 UTCMay 11, 00:34 UTC10h 20m
2026-05-10 BAW28F LAX → LHR May 10, 00:24 UTCMay 10, 10:19 UTC9h 55m
2026-05-09 BAW21B LHR → LAX May 9, 11:05 UTCMay 9, 21:40 UTC10h 35m
2026-05-08 BAW12 SIN → LHR May 8, 17:15 UTCMay 9, 06:20 UTC13h 5m
2026-05-07 BAW11 LHR → SIN May 7, 18:50 UTCMay 8, 07:09 UTC12h 19m
2026-05-07 BAW48Q SEA → LHR May 7, 03:40 UTCMay 7, 12:45 UTC9h 5m
2026-05-06 BAW49 LHR → SEA May 6, 16:05 UTCMay 7, 01:15 UTC9h 9m
2026-05-06 BAW28F LAX → LHR May 6, 00:25 UTCMay 6, 10:10 UTC9h 45m
2026-05-05 BAW21B LHR → LAX May 5, 11:00 UTCMay 5, 21:15 UTC10h 15m
2026-05-05 BAW116 JFK → LHR May 5, 01:00 UTCMay 5, 07:25 UTC6h 25m
2026-05-04 BAW15K LHR → JFK May 4, 15:00 UTCMay 4, 22:00 UTC7h 1m
2026-05-04 BAW14K JFK → LHR May 4, 02:04 UTCMay 4, 08:40 UTC6h 35m
2026-05-03 BAW33K LHR → JFK May 3, 15:50 UTCMay 3, 23:00 UTC7h 10m
2026-05-03 BAW48Q SEA → LHR May 3, 03:50 UTCMay 3, 12:40 UTC8h 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 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 8h 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 BAW49, BAW48Q, BAW6B, BAW28F, BAW21B.