Apparatus

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sensors Mode-S transponder

407994

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
407994
Octal
20074624
Decimal
4,225,428
Country
GB
Tail
G-STBO
Type
B77W
Broadcasting now · callsign BAW97A · 34,000 ft
Flights observed
172
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 23:00 UTC

Current position

407994 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 407994 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
BAW8DS British Airways 20 2026-07-22
BAW283 British Airways 16 2026-07-22
BAW11 British Airways 13 2026-07-20
BAW12 British Airways 12 2026-07-21
BAW9SW - 8 2026-07-15
BAW82P - 8 2026-07-14
BAW28K British Airways 7 2026-07-26
BAW04A British Airways 7 2026-07-23
BAW6B - 6 2026-07-18
BAW180 British Airways 6 2026-07-24
BAW97A - 5 2026-07-12
BAW293 - 5 2026-07-15
BAW196E - 5 2026-07-13
BAW15K British Airways 5 2026-07-25
BAW14K - 5 2026-07-17
BAW116 British Airways 5 2026-07-26
BAW49 - 4 2026-07-19
BAW48Q British Airways 4 2026-07-20
BAW33K - 4 2026-07-16
BAW29C - 4 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BAW28K LHR → SFO Jul 26, 14:50 UTCJul 26, 23:00 UTC8h 10m
2026-07-26 BAW116 JFK → LHR Jul 26, 00:30 UTCJul 26, 06:50 UTC6h 21m
2026-07-25 BAW15K LHR → JFK Jul 25, 14:55 UTCJul 25, 21:45 UTC6h 50m
2026-07-25 BAW28F LAX → LHR Jul 25, 00:45 UTCJul 25, 10:10 UTC9h 25m
2026-07-24 BAW21B LHR → LAX Jul 24, 11:35 UTCJul 24, 22:15 UTC10h 40m
2026-07-24 BAW180 EWR → LHR Jul 24, 00:05 UTCJul 24, 06:10 UTC6h 5m
2026-07-23 BAW04A JFK → LHR Jul 23, 13:05 UTCJul 23, 19:50 UTC6h 45m
2026-07-22 BAW8DS LAX → LHR Jul 22, 23:30 UTCJul 23, 09:10 UTC9h 40m
2026-07-22 BAW283 LHR → LAX Jul 22, 11:10 UTCJul 22, 20:40 UTC9h 30m
2026-07-21 BAW12 SIN → LHR Jul 21, 15:45 UTCJul 22, 05:15 UTC13h 30m
2026-07-20 BAW11 LHR → SIN Jul 20, 18:55 UTCJul 21, 07:20 UTC12h 25m
2026-07-20 BAW48Q SEA → LHR Jul 20, 03:50 UTCJul 20, 12:25 UTC8h 35m
2026-07-19 BAW49 LHR → SEA Jul 19, 16:10 UTCJul 20, 01:25 UTC9h 15m
2026-07-19 BAW48Q SEA → LHR Jul 19, 04:00 UTCJul 19, 12:55 UTC8h 55m
2026-07-18 BAW49 - Jul 18, 16:15 UTCJul 19, 01:35 UTC9h 20m
2026-07-18 BAW6B - Jul 18, 02:45 UTCJul 18, 12:15 UTC9h 31m
2026-07-17 BAW28K - Jul 17, 13:50 UTCJul 18, 00:15 UTC10h 25m
2026-07-17 BAW14K JFK → LHR Jul 17, 02:39 UTCJul 17, 09:10 UTC6h 30m
2026-07-16 BAW33K - Jul 16, 15:55 UTCJul 16, 22:55 UTC7h 0m
2026-07-16 BAW29C IAD → LHR Jul 16, 02:50 UTCJul 16, 09:35 UTC6h 45m
2026-07-15 BAW293 - Jul 15, 16:45 UTCJul 16, 00:15 UTC7h 30m
2026-07-15 BAW9SW - Jul 15, 03:15 UTCJul 15, 13:25 UTC10h 10m
2026-07-14 BAW82P - Jul 14, 14:30 UTCJul 15, 00:55 UTC10h 24m
2026-07-14 BAW29C IAD → LHR Jul 14, 02:35 UTCJul 14, 09:35 UTC7h 0m
2026-07-13 BAW293 - Jul 13, 16:55 UTCJul 14, 00:05 UTC7h 10m
2026-07-13 BAW196E - Jul 13, 02:30 UTCJul 13, 11:20 UTC8h 50m
2026-07-12 BAW97A - Jul 12, 14:25 UTCJul 13, 00:10 UTC9h 45m
2026-07-12 BAW196E - Jul 12, 02:55 UTCJul 12, 11:50 UTC8h 55m
2026-07-11 BAW97A - Jul 11, 14:55 UTCJul 12, 00:25 UTC9h 30m
2026-07-11 BAW29C IAD → LHR Jul 11, 03:35 UTCJul 11, 10:05 UTC6h 30m
2026-07-10 BAW293 LHR → IAD Jul 10, 17:20 UTCJul 11, 01:15 UTC7h 56m
2026-07-10 BAW196E - Jul 10, 05:30 UTCJul 10, 14:20 UTC8h 50m
2026-07-09 BAW97A - Jul 9, 17:20 UTCJul 10, 03:20 UTC10h 0m
2026-07-08 BAW8DS - Jul 8, 23:20 UTCJul 9, 09:05 UTC9h 45m
2026-07-08 BAW283 - Jul 8, 10:40 UTCJul 8, 21:00 UTC10h 20m
2026-07-07 BAW11J JFK → LHR Jul 7, 23:25 UTCJul 8, 05:40 UTC6h 15m
2026-07-07 BAW181 LHR → EWR Jul 7, 12:00 UTCJul 7, 19:00 UTC7h 0m
2026-07-06 BAW12 - Jul 6, 15:50 UTCJul 7, 05:25 UTC13h 35m
2026-07-05 BAW11 - Jul 5, 19:00 UTCJul 6, 07:30 UTC12h 30m
2026-06-30 BAW48Q SEA → LHR Jun 30, 04:05 UTCJun 30, 12:55 UTC8h 50m
2026-06-29 BAW49 LHR → SEA Jun 29, 16:15 UTCJun 30, 01:09 UTC8h 55m
2026-06-29 BAW8DS - Jun 29, 00:10 UTCJun 29, 09:44 UTC9h 35m
2026-06-28 BAW283 LHR → LAX Jun 28, 10:04 UTCJun 28, 20:19 UTC10h 15m
2026-06-28 BAW212 - Jun 28, 00:30 UTCJun 28, 06:10 UTC5h 40m
2026-06-27 BAW213 LHR → BOS Jun 27, 15:30 UTCJun 27, 21:55 UTC6h 25m
2026-06-26 BAW12 - Jun 26, 15:54 UTCJun 27, 05:10 UTC13h 15m
2026-06-25 BAW11 - Jun 25, 19:39 UTCJun 26, 08:05 UTC12h 25m
2026-06-24 BAW212 BOS → LHR Jun 24, 23:59 UTCJun 25, 05:35 UTC5h 35m
2026-06-24 BAW213 LHR → BOS Jun 24, 14:24 UTCJun 24, 21:14 UTC6h 50m
2026-06-24 BAW14K JFK → LHR Jun 24, 02:09 UTCJun 24, 08:24 UTC6h 15m

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

Mode-S 407994 frequently asked

What is Mode-S code 407994?
407994 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-STBO.
Where is Mode-S 407994 registered?
Mode-S code 407994 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 407994 broadcasting right now?
Yes. Mode-S 407994 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407994, octal 20074624, decimal 4,225,428.
What flights does 407994 operate?
Mode-S 407994 has broadcast 20 distinct callsigns, including BAW8DS, BAW283, BAW11, BAW12, BAW9SW.