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
No current signal · last broadcast Jul 26, 22:10 UTC
Flights observed
190
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 22:10 UTC

Last known position

Most recent position reported by Mode-S 406A34.

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 13 2026-07-02
BAW97A - 12 2026-07-13
BAW8DS - 11 2026-07-02
BAW196E - 11 2026-07-14
BAW15K British Airways 10 2026-07-26
BAW40F British Airways 9 2026-07-25
BAW173A British Airways 9 2026-07-24
BAW116 - 9 2026-07-16
BAW82P - 8 2026-07-16
BAW12 - 8 2026-07-01
BAW11 - 8 2026-06-30
BAW9SW - 7 2026-07-12
BAW33K - 7 2026-07-21
BAW28F British Airways 7 2026-07-20
BAW14K British Airways 7 2026-07-22
BAW6B - 6 2026-07-21
BAW28K - 6 2026-07-20
BAW21B British Airways 6 2026-07-19
BAW298 - 5 2026-06-22
BAW299 - 4 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BAW15K LHR → JFK Jul 26, 15:00 UTCJul 26, 22:05 UTC7h 5m
2026-07-26 BAW172 JFK → LHR Jul 26, 01:25 UTCJul 26, 07:45 UTC6h 21m
2026-07-25 BAW7NY LHR → JFK Jul 25, 10:10 UTCJul 25, 16:55 UTC6h 45m
2026-07-25 BAW40F JFK → LHR Jul 25, 00:30 UTCJul 25, 06:40 UTC6h 10m
2026-07-24 BAW173A LHR → JFK Jul 24, 11:00 UTCJul 24, 17:45 UTC6h 45m
2026-07-23 BAW40F JFK → LHR Jul 23, 23:35 UTCJul 24, 05:40 UTC6h 5m
2026-07-23 BAW173A LHR → JFK Jul 23, 11:00 UTCJul 23, 17:50 UTC6h 50m
2026-07-22 BAW180 EWR → LHR Jul 22, 23:35 UTCJul 23, 05:55 UTC6h 20m
2026-07-22 BAW04A JFK → LHR Jul 22, 13:30 UTCJul 22, 20:20 UTC6h 50m
2026-07-22 BAW14K JFK → LHR Jul 22, 02:00 UTCJul 22, 03:20 UTC1h 20m
2026-07-21 BAW33K - Jul 21, 16:15 UTCJul 21, 23:30 UTC7h 15m
2026-07-21 BAW6B SFO → LHR Jul 21, 03:30 UTCJul 21, 12:55 UTC9h 25m
2026-07-20 BAW28K - Jul 20, 14:25 UTCJul 21, 00:55 UTC10h 29m
2026-07-20 BAW28F LAX → LHR Jul 20, 00:25 UTCJul 20, 10:00 UTC9h 35m
2026-07-19 BAW21B LHR → LAX Jul 19, 11:10 UTCJul 19, 21:30 UTC10h 20m
2026-07-18 BAW9602 EWR → LHR Jul 18, 22:10 UTCJul 19, 07:55 UTC9h 45m
2026-07-16 BAW82P - Jul 16, 13:49 UTCJul 17, 00:14 UTC10h 25m
2026-07-16 BAW116 JFK → LHR Jul 16, 01:30 UTCJul 16, 07:50 UTC6h 20m
2026-07-15 BAW15K - Jul 15, 15:05 UTCJul 15, 22:30 UTC7h 25m
2026-07-15 BAW14K JFK → LHR Jul 15, 02:05 UTCJul 15, 08:50 UTC6h 45m
2026-07-14 BAW33K - Jul 14, 16:05 UTCJul 14, 23:00 UTC6h 54m
2026-07-14 BAW196E - Jul 14, 02:35 UTCJul 14, 11:40 UTC9h 5m
2026-07-13 BAW97A - Jul 13, 14:20 UTCJul 13, 23:35 UTC9h 15m
2026-07-13 BAW14K JFK → LHR Jul 13, 02:15 UTCJul 13, 08:35 UTC6h 20m
2026-07-12 BAW33K - Jul 12, 16:45 UTCJul 12, 23:30 UTC6h 45m
2026-07-12 BAW9SW - Jul 12, 03:05 UTCJul 12, 13:10 UTC10h 5m
2026-07-11 BAW82P LHR → SAN Jul 11, 14:30 UTCJul 12, 01:00 UTC10h 30m
2026-07-10 BAW134 - Jul 10, 04:25 UTCJul 10, 13:35 UTC9h 10m
2026-07-09 BAW135 - Jul 9, 17:25 UTCJul 10, 01:50 UTC8h 25m
2026-07-09 BAW48Q SEA → LHR Jul 9, 03:45 UTCJul 9, 12:30 UTC8h 45m
2026-07-08 BAW49 - Jul 8, 16:10 UTCJul 9, 01:15 UTC9h 5m
2026-07-08 BAW196E - Jul 8, 03:10 UTCJul 8, 11:55 UTC8h 45m
2026-07-07 BAW97A - Jul 7, 14:55 UTCJul 8, 00:25 UTC9h 30m
2026-07-07 BAW29C IAD → LHR Jul 7, 05:20 UTCJul 7, 12:05 UTC6h 45m
2026-07-06 BAW293 - Jul 6, 16:30 UTCJul 7, 00:05 UTC7h 35m
2026-07-06 BAW9SW - Jul 6, 03:10 UTCJul 6, 13:05 UTC9h 55m
2026-07-05 BAW82P LHR → SAN Jul 5, 13:55 UTCJul 6, 00:30 UTC10h 35m
2026-07-05 BAW14K JFK → LHR Jul 5, 02:45 UTCJul 5, 09:00 UTC6h 15m
2026-07-04 BAW33K LHR → JFK Jul 4, 16:15 UTCJul 4, 23:30 UTC7h 15m
2026-07-04 BAW6B SFO → LHR Jul 4, 02:55 UTCJul 4, 12:45 UTC9h 50m
2026-07-03 BAW28K LHR → SFO Jul 3, 13:50 UTCJul 4, 00:15 UTC10h 25m
2026-07-02 BAW8DS - Jul 2, 23:20 UTCJul 3, 08:45 UTC9h 25m
2026-07-02 BAW283 LHR → LAX Jul 2, 10:20 UTCJul 2, 20:55 UTC10h 35m
2026-07-01 BAW12 - Jul 1, 15:45 UTCJul 2, 04:40 UTC12h 55m
2026-06-30 BAW11 - Jun 30, 19:15 UTCJul 1, 08:00 UTC12h 45m
2026-06-30 BAW14K JFK → LHR Jun 30, 02:40 UTCJun 30, 08:45 UTC6h 5m
2026-06-29 BAW33K LHR → JFK Jun 29, 16:35 UTCJun 29, 23:29 UTC6h 55m
2026-06-29 BAW196E - Jun 29, 02:25 UTCJun 29, 10:55 UTC8h 30m
2026-06-28 BAW97A - Jun 28, 14:50 UTCJun 29, 00:10 UTC9h 20m
2026-06-27 BAW12 - Jun 27, 15:55 UTCJun 28, 05:20 UTC13h 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?
No active broadcast right now. Last signal was Jul 26, 22:10 UTC.
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, BAW97A, BAW8DS, BAW196E, BAW15K.