Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

406590

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
406590
Octal
20062620
Decimal
4,220,304
Country
GB
Tail
G-STBD
Type
B77W
No current signal · last broadcast 1h ago
Flights observed
152
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 406590.

Country allocation

The ICAO 24-bit address 406590 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 - 14 2026-07-17
BAW48Q - 13 2026-07-17
BAW116 - 8 2026-07-09
BAW9SW - 7 2026-07-14
BAW82P - 7 2026-07-13
BAW15K - 7 2026-07-08
BAW97A - 6 2026-06-20
BAW33K British Airways 6 2026-06-30
BAW299 British Airways 6 2026-06-10
BAW298 British Airways 6 2026-06-11
BAW283 British Airways 6 2026-06-04
BAW196E - 6 2026-06-21
BAW8DS British Airways 5 2026-06-04
BAW293 - 5 2026-07-05
BAW28F - 5 2026-07-10
BAW21B - 5 2026-07-09
BAW14K - 5 2026-07-01
BAW6B British Airways 4 2026-06-30
BAW29C - 4 2026-07-05
BAW28K British Airways 4 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 BAW49 - Jul 17, 15:55 UTCJul 18, 01:10 UTC9h 15m
2026-07-17 BAW48Q SEA → LHR Jul 17, 04:04 UTCJul 17, 12:45 UTC8h 40m
2026-07-16 BAW49 - Jul 16, 16:15 UTCJul 17, 01:35 UTC9h 20m
2026-07-16 BAW48Q KEH → LHR Jul 16, 03:55 UTCJul 16, 12:25 UTC8h 30m
2026-07-15 BAW49 LHR → SEA Jul 15, 16:10 UTCJul 16, 01:35 UTC9h 25m
2026-07-15 BAW48Q - Jul 15, 03:55 UTCJul 15, 12:30 UTC8h 35m
2026-07-14 BAW49 LHR → SEA Jul 14, 15:55 UTCJul 15, 01:10 UTC9h 14m
2026-07-14 BAW9SW - Jul 14, 03:10 UTCJul 14, 13:05 UTC9h 55m
2026-07-13 BAW82P - Jul 13, 14:15 UTCJul 14, 00:55 UTC10h 40m
2026-07-12 BAW12 - Jul 12, 15:50 UTCJul 13, 05:05 UTC13h 15m
2026-07-11 BAW11 - Jul 11, 19:15 UTCJul 12, 07:45 UTC12h 30m
2026-07-11 BAW9SW - Jul 11, 03:01 UTCJul 11, 13:05 UTC10h 5m
2026-07-10 BAW82P LHR → SAN Jul 10, 13:55 UTCJul 11, 00:25 UTC10h 30m
2026-07-10 BAW28F - Jul 10, 00:45 UTCJul 10, 10:25 UTC9h 40m
2026-07-09 BAW21B - Jul 9, 11:40 UTCJul 9, 22:15 UTC10h 35m
2026-07-09 BAW116 - Jul 9, 01:20 UTCJul 9, 07:45 UTC6h 25m
2026-07-08 BAW15K - Jul 8, 14:50 UTCJul 8, 21:40 UTC6h 50m
2026-07-08 BAW116 JFK → LHR Jul 8, 00:45 UTCJul 8, 07:20 UTC6h 35m
2026-07-07 BAW15K LHR → JFK Jul 7, 15:05 UTCJul 7, 22:00 UTC6h 55m
2026-07-07 BAW51B BOS → LHR Jul 7, 03:00 UTCJul 7, 08:50 UTC5h 50m
2026-07-06 BAW50G - Jul 6, 17:40 UTCJul 7, 00:15 UTC6h 35m
2026-07-05 BAW29C IAD → LHR Jul 5, 06:10 UTCJul 5, 12:30 UTC6h 20m
2026-07-05 BAW293 PHL → IAD Jul 5, 03:30 UTCJul 5, 04:00 UTC30m
2026-07-04 BAW293 - Jul 4, 16:45 UTCJul 5, 01:00 UTC8h 15m
2026-07-04 BAW9SW - Jul 4, 03:05 UTCJul 4, 12:50 UTC9h 45m
2026-07-03 BAW82P LHR → SAN Jul 3, 14:20 UTCJul 4, 01:00 UTC10h 40m
2026-07-03 BAW264 - Jul 3, 00:25 UTCJul 3, 10:00 UTC9h 35m
2026-07-02 BAW265 - Jul 2, 11:10 UTCJul 2, 21:50 UTC10h 40m
2026-07-01 BAW11J JFK → LHR Jul 1, 23:20 UTCJul 2, 05:30 UTC6h 10m
2026-07-01 BAW181 LHR → EWR Jul 1, 12:00 UTCJul 1, 19:05 UTC7h 5m
2026-07-01 BAW14K - Jul 1, 02:00 UTCJul 1, 08:15 UTC6h 15m
2026-06-30 BAW33K LHR → JFK Jun 30, 16:10 UTCJun 30, 23:10 UTC7h 0m
2026-06-30 BAW6B SFO → LHR Jun 30, 03:10 UTCJun 30, 12:45 UTC9h 35m
2026-06-29 BAW28K LHR → SFO Jun 29, 14:29 UTCJun 30, 00:25 UTC9h 55m
2026-06-28 BAW629 ATH → LHR Jun 28, 13:29 UTCJun 28, 16:29 UTC3h 0m
2026-06-28 BAW628 - Jun 28, 08:34 UTCJun 28, 11:39 UTC3h 5m
2026-06-27 BAW178 JFK → LHR Jun 27, 12:15 UTCJun 27, 18:15 UTC6h 0m
2026-06-26 BAW183 - Jun 26, 19:04 UTCJun 27, 02:09 UTC7h 5m
2026-06-26 BAW48Q SEA → LHR Jun 26, 07:00 UTCJun 26, 15:49 UTC8h 50m
2026-06-25 BAW49 LHR → SEA Jun 25, 19:05 UTCJun 26, 04:14 UTC9h 10m
2026-06-25 BAW48Q SEA → LHR Jun 25, 03:59 UTCJun 25, 12:54 UTC8h 55m
2026-06-24 BAW49 - Jun 24, 16:19 UTCJun 25, 01:19 UTC9h 0m
2026-06-24 BAW9SW - Jun 24, 03:04 UTCJun 24, 12:44 UTC9h 40m
2026-06-23 BAW82P LHR → SAN Jun 23, 14:19 UTCJun 24, 00:55 UTC10h 35m
2026-06-22 BAW180 JFK → LHR Jun 22, 23:29 UTCJun 23, 05:29 UTC6h 0m
2026-06-22 BAW04A - Jun 22, 12:59 UTCJun 22, 20:04 UTC7h 5m
2026-06-22 BAW14K JFK → LHR Jun 22, 02:34 UTCJun 22, 08:40 UTC6h 5m
2026-06-21 BAW33K LHR → JFK Jun 21, 15:59 UTCJun 21, 23:10 UTC7h 10m
2026-06-21 BAW196E - Jun 21, 04:04 UTCJun 21, 12:24 UTC8h 20m
2026-06-20 BAW97A - Jun 20, 16:05 UTCJun 21, 01:35 UTC9h 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-STBD page for operator, model, and routing details .

Mode-S 406590 frequently asked

What is Mode-S code 406590?
406590 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-STBD.
Where is Mode-S 406590 registered?
Mode-S code 406590 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 406590 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406590, octal 20062620, decimal 4,220,304.
What flights does 406590 operate?
Mode-S 406590 has broadcast 20 distinct callsigns, including BAW49, BAW48Q, BAW116, BAW9SW, BAW82P.