Apparatus

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sensors Mode-S transponder

406A34

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
406A34
Octal
20065064
Decimal
4,221,492
Country
GB
Tail
G-STBI
Type
B77W
Broadcasting now · callsign BAW9SW · 35,000 ft
Flights observed
92
Distinct callsigns
20
Country
GB
Last broadcast
5h ago

Current position

406A34 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 406A34 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
BAW283 British Airways 9 2026-05-23
BAW8DS British Airways 7 2026-05-23
BAW97A British Airways 6 2026-04-18
BAW196E British Airways 5 2026-04-19
BAW15K British Airways 5 2026-05-26
BAW116 British Airways 5 2026-05-27
BAW6B British Airways 4 2026-05-29
BAW40F British Airways 4 2026-05-14
BAW298 British Airways 4 2026-04-17
BAW28K British Airways 4 2026-05-28
BAW173A British Airways 4 2026-05-14
BAW82P British Airways 3 2026-05-30
BAW299 British Airways 3 2026-04-16
BAW28F British Airways 3 2026-05-28
BAW12 British Airways 3 2026-05-20
BAW11 British Airways 3 2026-05-19
BAW9SW British Airways 2 2026-05-08
BAW33K British Airways 2 2026-05-29
BAW21B British Airways 2 2026-05-27
BAW14K British Airways 2 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BAW82P LHR → SAN May 30, 14:40 UTCMay 31, 00:55 UTC10h 15m
2026-05-30 BAW14K JFK → LHR May 30, 02:40 UTCMay 30, 09:00 UTC6h 20m
2026-05-29 BAW33K LHR → JFK May 29, 16:20 UTCMay 29, 23:40 UTC7h 20m
2026-05-29 BAW6B SFO → LHR May 29, 03:05 UTCMay 29, 12:55 UTC9h 50m
2026-05-28 BAW28K LHR → SFO May 28, 14:35 UTCMay 29, 00:45 UTC10h 10m
2026-05-28 BAW28F LAX → LHR May 28, 00:55 UTCMay 28, 11:10 UTC10h 15m
2026-05-27 BAW21B LHR → LAX May 27, 12:05 UTCMay 27, 22:30 UTC10h 25m
2026-05-27 BAW116 JFK → LHR May 27, 00:55 UTCMay 27, 07:30 UTC6h 36m
2026-05-26 BAW15K LHR → JFK May 26, 15:20 UTCMay 26, 22:05 UTC6h 45m
2026-05-26 BAW14K JFK → LHR May 26, 02:10 UTCMay 26, 08:19 UTC6h 10m
2026-05-25 BAW33K LHR → JFK May 25, 16:15 UTCMay 25, 23:19 UTC7h 4m
2026-05-25 BAW6B SFO → LHR May 25, 02:45 UTCMay 25, 12:30 UTC9h 45m
2026-05-24 BAW28K LHR → SFO May 24, 14:00 UTCMay 24, 23:46 UTC9h 46m
2026-05-23 BAW8DS LAX → LHR May 23, 23:25 UTCMay 24, 09:20 UTC9h 55m
2026-05-23 BAW283 LHR → LAX May 23, 10:15 UTCMay 23, 20:45 UTC10h 31m
2026-05-21 BAW8DS LAX → LHR May 21, 23:05 UTCMay 22, 09:00 UTC9h 55m
2026-05-21 BAW283 LHR → LAX May 21, 10:00 UTCMay 21, 20:15 UTC10h 15m
2026-05-20 BAW12 SIN → LHR May 20, 16:00 UTCMay 21, 05:05 UTC13h 5m
2026-05-19 BAW11 LHR → SIN May 19, 19:00 UTCMay 20, 07:30 UTC12h 31m
2026-05-19 BAW278 LAX → LHR May 19, 03:25 UTCMay 19, 13:00 UTC9h 35m
2026-05-18 BAW001 - May 18, 12:40 UTCMay 18, 23:10 UTC10h 29m
2026-05-17 BAW8DS LAX → LHR May 17, 22:55 UTCMay 18, 08:50 UTC9h 55m
2026-05-17 BAW283 LHR → LAX May 17, 10:20 UTCMay 17, 20:30 UTC10h 10m
2026-05-14 BAW40F JFK → LHR May 14, 22:50 UTCMay 15, 05:25 UTC6h 35m
2026-05-14 BAW173A LHR → JFK May 14, 11:05 UTCMay 14, 18:40 UTC7h 35m
2026-05-13 BAW29C IAD → LHR May 13, 03:10 UTCMay 13, 10:10 UTC7h 0m
2026-05-12 BAW293 LHR → IAD May 12, 17:10 UTCMay 13, 00:45 UTC7h 35m
2026-05-12 BAW48Q SEA → LHR May 12, 04:05 UTCMay 12, 12:45 UTC8h 40m
2026-05-11 BAW49 LHR → SEA May 11, 16:20 UTCMay 11, 21:10 UTC4h 50m
2026-05-11 BAW6B SFO → LHR May 11, 03:20 UTCMay 11, 12:40 UTC9h 20m
2026-05-10 BAW28K LHR → SFO May 10, 13:55 UTCMay 11, 00:30 UTC10h 35m
2026-05-08 BAW9SW SAN → LHR May 8, 03:04 UTCMay 8, 13:15 UTC10h 10m
2026-05-07 BAW82P LHR → SAN May 7, 14:10 UTCMay 8, 00:25 UTC10h 15m
2026-05-02 BAW51B BOS → LHR May 2, 02:15 UTCMay 2, 08:30 UTC6h 15m
2026-05-01 BAW50G LHR → BOS May 1, 17:00 UTCMay 1, 23:25 UTC6h 25m
2026-04-30 BAW12 SIN → LHR Apr 30, 15:50 UTCMay 1, 05:15 UTC13h 25m
2026-04-29 BAW11 LHR → SIN Apr 29, 18:50 UTCApr 30, 07:05 UTC12h 14m
2026-04-29 BAW6B SFO → LHR Apr 29, 02:40 UTCApr 29, 12:45 UTC10h 6m
2026-04-28 BAW28K LHR → SFO Apr 28, 14:05 UTCApr 29, 00:15 UTC10h 10m
2026-04-27 BAW8DS LAX → LHR Apr 27, 23:05 UTCApr 28, 08:40 UTC9h 35m
2026-04-27 BAW283 LHR → LAX Apr 27, 09:55 UTCApr 27, 20:20 UTC10h 25m
2026-04-26 BAW12 SIN → LHR Apr 26, 15:55 UTCApr 27, 06:00 UTC14h 5m
2026-04-25 BAW11 LHR → SIN Apr 25, 18:50 UTCApr 26, 07:35 UTC12h 45m
2026-04-24 BAW180 EWR → LHR Apr 24, 23:50 UTCApr 25, 06:20 UTC6h 30m
2026-04-24 BAW04A JFK → LHR Apr 24, 12:45 UTCApr 24, 19:05 UTC6h 20m
2026-04-22 BAW9SW SAN → LHR Apr 22, 04:00 UTCApr 22, 14:00 UTC10h 0m
2026-04-21 BAW82P LHR → SAN Apr 21, 13:55 UTCApr 22, 01:05 UTC11h 10m
2026-04-21 BAW264 IAD → LHR Apr 21, 00:15 UTCApr 21, 10:35 UTC10h 20m
2026-04-20 BAW265 LHR → SAN Apr 20, 11:00 UTCApr 20, 21:35 UTC10h 35m
2026-04-20 BAW116 JFK → LHR Apr 20, 06:15 UTCApr 20, 07:40 UTC1h 25m

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

Mode-S 406A34 frequently asked

What is Mode-S code 406A34?
406A34 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-STBI.
Where is Mode-S 406A34 registered?
Mode-S code 406A34 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 406A34 broadcasting right now?
Yes. Mode-S 406A34 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406A34, octal 20065064, decimal 4,221,492.
What flights does 406A34 operate?
Mode-S 406A34 has broadcast 20 distinct callsigns, including BAW283, BAW8DS, BAW97A, BAW196E, BAW15K.