Apparatus

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sensors Mode-S transponder

406B05

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
406B05
Octal
20065405
Decimal
4,221,701
Country
GB
Tail
G-STBL
Type
B77W
Broadcasting now · callsign BAW9SW · 33,000 ft
Flights observed
104
Distinct callsigns
20
Country
GB
Last broadcast
3h ago

Current position

406B05 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 406B05 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 10 2026-05-24
BAW48Q British Airways 10 2026-05-25
BAW40F British Airways 10 2026-05-07
BAW28K British Airways 8 2026-05-18
BAW21B British Airways 7 2026-05-17
BAW6B British Airways 6 2026-05-19
BAW173A British Airways 6 2026-05-07
BAW14K British Airways 4 2026-04-18
BAW82P British Airways 3 2026-05-29
BAW293 British Airways 3 2026-05-28
BAW28F British Airways 3 2026-05-18
BAW12 British Airways 3 2026-05-02
BAW11 British Airways 3 2026-05-01
BAW9SW British Airways 2 2026-05-28
BAW97A British Airways 2 2026-05-19
BAW8DS British Airways 2 2026-05-26
BAW33K British Airways 2 2026-04-17
BAW29C British Airways 2 2026-05-29
BAW283 British Airways 2 2026-05-26
BAW196E British Airways 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW82P LHR → SAN May 29, 14:20 UTCMay 30, 00:45 UTC10h 25m
2026-05-29 BAW29C IAD → LHR May 29, 02:40 UTCMay 29, 09:45 UTC7h 5m
2026-05-28 BAW293 LHR → IAD May 28, 16:55 UTCMay 29, 00:05 UTC7h 10m
2026-05-28 BAW9SW SAN → LHR May 28, 03:15 UTCMay 28, 13:20 UTC10h 5m
2026-05-27 BAW82P LHR → SAN May 27, 14:25 UTCMay 28, 00:55 UTC10h 30m
2026-05-26 BAW8DS LAX → LHR May 26, 23:39 UTCMay 27, 09:20 UTC9h 40m
2026-05-26 BAW283 LHR → LAX May 26, 10:25 UTCMay 26, 21:04 UTC10h 40m
2026-05-25 BAW48Q SEA → LHR May 25, 03:50 UTCMay 25, 12:40 UTC8h 50m
2026-05-24 BAW49 LHR → SEA May 24, 16:05 UTCMay 24, 20:45 UTC4h 40m
2026-05-24 BAW48Q SEA → LHR May 24, 03:40 UTCMay 24, 12:30 UTC8h 50m
2026-05-23 BAW49 LHR → SEA May 23, 16:05 UTCMay 24, 01:20 UTC9h 16m
2026-05-23 BAW29C IAD → LHR May 23, 03:20 UTCMay 23, 09:40 UTC6h 20m
2026-05-22 BAW293 LHR → IAD May 22, 16:30 UTCMay 23, 00:00 UTC7h 30m
2026-05-21 BAW178 JFK → LHR May 21, 12:30 UTCMay 21, 18:30 UTC6h 0m
2026-05-20 BAW15K LHR → JFK May 20, 15:15 UTCMay 20, 22:15 UTC7h 0m
2026-05-20 BAW196E IAH → LHR May 20, 03:25 UTCMay 20, 11:50 UTC8h 26m
2026-05-19 BAW97A LHR → IAH May 19, 15:05 UTCMay 20, 00:40 UTC9h 35m
2026-05-19 BAW6B SFO → LHR May 19, 02:50 UTCMay 19, 12:10 UTC9h 20m
2026-05-18 BAW28K LHR → SFO May 18, 14:15 UTCMay 19, 00:30 UTC10h 14m
2026-05-18 BAW28F LAX → LHR May 18, 01:40 UTCMay 18, 11:15 UTC9h 35m
2026-05-17 BAW21B LHR → LAX May 17, 13:01 UTCMay 17, 23:05 UTC10h 5m
2026-05-17 BAW180 EWR → LHR May 17, 00:10 UTCMay 17, 06:15 UTC6h 5m
2026-05-16 BAW04A JFK → LHR May 16, 12:45 UTCMay 16, 19:50 UTC7h 5m
2026-05-15 BAW180 EWR → LHR May 15, 23:35 UTCMay 16, 05:35 UTC6h 0m
2026-05-15 BAW04A JFK → LHR May 15, 12:40 UTCMay 15, 19:40 UTC6h 59m
2026-05-15 BAW9608 MCO → LHR May 15, 02:10 UTCMay 15, 08:30 UTC6h 20m
2026-05-13 BAW293 LHR → IAD May 13, 17:40 UTCMay 14, 01:55 UTC8h 15m
2026-05-13 BAW48Q SEA → LHR May 13, 03:50 UTCMay 13, 12:45 UTC8h 55m
2026-05-12 BAW49 LHR → SEA May 12, 15:55 UTCMay 13, 01:25 UTC9h 30m
2026-05-11 BAW48Q SEA → LHR May 11, 04:30 UTCMay 11, 13:05 UTC8h 35m
2026-05-10 BAW49 LHR → SEA May 10, 16:34 UTCMay 11, 02:10 UTC9h 35m
2026-05-10 BAW6B SFO → LHR May 10, 03:20 UTCMay 10, 13:05 UTC9h 45m
2026-05-09 BAW28K LHR → SFO May 9, 14:15 UTCMay 10, 00:39 UTC10h 25m
2026-05-08 BAW8DS LAX → LHR May 8, 23:10 UTCMay 9, 09:05 UTC9h 55m
2026-05-08 BAW283 LHR → LAX May 8, 10:19 UTCMay 8, 20:40 UTC10h 20m
2026-05-07 BAW40F JFK → LHR May 7, 22:59 UTCMay 8, 05:09 UTC6h 10m
2026-05-07 BAW173A LHR → JFK May 7, 10:50 UTCMay 7, 18:10 UTC7h 20m
2026-05-07 BAW116 JFK → LHR May 7, 06:00 UTCMay 7, 07:30 UTC1h 30m
2026-05-07 BAW116 JFK → LHR May 7, 01:15 UTCMay 7, 02:35 UTC1h 20m
2026-05-06 BAW15K LHR → JFK May 6, 14:50 UTCMay 6, 21:55 UTC7h 4m
2026-05-06 BAW40F JFK → LHR May 6, 00:35 UTCMay 6, 05:40 UTC5h 5m
2026-05-05 BAW40F JFK → LHR May 5, 23:10 UTCMay 6, 00:31 UTC1h 20m
2026-05-05 BAW173A LHR → JFK May 5, 12:55 UTCMay 5, 19:55 UTC7h 0m
2026-05-04 BAW40F JFK → LHR May 4, 23:05 UTCMay 5, 05:30 UTC6h 25m
2026-05-04 BAW173A LHR → JFK May 4, 11:10 UTCMay 4, 18:10 UTC7h 0m
2026-05-03 BAW40F JFK → LHR May 3, 23:00 UTCMay 4, 05:25 UTC6h 25m
2026-05-03 BAW173A LHR → JFK May 3, 11:30 UTCMay 3, 18:34 UTC7h 5m
2026-05-02 BAW12 SIN → LHR May 2, 15:55 UTCMay 3, 05:15 UTC13h 19m
2026-05-01 BAW11 LHR → SIN May 1, 18:55 UTCMay 2, 07:15 UTC12h 20m
2026-05-01 BAW196E IAH → LHR May 1, 04:00 UTCMay 1, 12:30 UTC8h 30m

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

Mode-S 406B05 frequently asked

What is Mode-S code 406B05?
406B05 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-STBL.
Where is Mode-S 406B05 registered?
Mode-S code 406B05 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 406B05 broadcasting right now?
Yes. Mode-S 406B05 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406B05, octal 20065405, decimal 4,221,701.
What flights does 406B05 operate?
Mode-S 406B05 has broadcast 20 distinct callsigns, including BAW49, BAW48Q, BAW40F, BAW28K, BAW21B.