Apparatus

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sensors Mode-S transponder

4007FB

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-YMMP · BOEING 777-200

Hex
4007FB
Octal
20003773
Decimal
4,196,347
Country
GB
Tail
G-YMMP
Type
B772
Broadcasting now · callsign BAW249 · 35,000 ft
Flights observed
210
Distinct callsigns
20
Country
GB
Last broadcast
6h ago

Current position

4007FB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4007FB 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
BAW249 - 23 2026-07-13
BAW248 - 21 2026-07-07
BAW5VY - 11 2026-07-05
BAW88C - 10 2026-07-06
BAW22B - 9 2026-07-11
BAW138 British Airways 9 2026-04-18
BAW2LJ - 8 2026-07-12
BAW118 British Airways 8 2026-06-01
BAW276 - 7 2026-07-11
BAW21V - 7 2026-06-29
BAW139 British Airways 7 2026-04-17
BAW120 - 7 2026-06-30
BAW46EZ - 6 2026-07-13
BAW461 - 6 2026-07-13
BAW198 British Airways 6 2026-05-05
BAW143 British Airways 6 2026-05-16
BAW142 British Airways 6 2026-05-16
BAW119 British Airways 6 2026-05-31
BAW264 - 5 2026-07-09
BAW65 - 4 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BAW249 - Jul 13, 21:10 UTCJul 13, 22:30 UTC1h 20m
2026-07-13 BAW461 MAD → LHR Jul 13, 15:40 UTCJul 13, 17:30 UTC1h 50m
2026-07-13 BAW46EZ - Jul 13, 12:00 UTCJul 13, 13:45 UTC1h 45m
2026-07-12 BAW290 IAD → LHR Jul 12, 23:35 UTCJul 13, 06:45 UTC7h 10m
2026-07-12 BAW291 LHR → IAD Jul 12, 13:45 UTCJul 12, 21:30 UTC7h 45m
2026-07-12 BAW2LJ BWI → LHR Jul 12, 02:50 UTCJul 12, 09:20 UTC6h 30m
2026-07-11 BAW22B LHR → BWI Jul 11, 17:00 UTCJul 12, 00:30 UTC7h 30m
2026-07-11 BAW276 - Jul 11, 08:45 UTCJul 11, 12:15 UTC3h 30m
2026-07-10 BAW277 - Jul 10, 14:55 UTCJul 11, 08:25 UTC17h 30m
2026-07-10 BAW86 YVR → LHR Jul 10, 01:10 UTCJul 10, 09:45 UTC8h 35m
2026-07-09 BAW87 - Jul 9, 14:00 UTCJul 9, 23:05 UTC9h 5m
2026-07-09 BAW264 - Jul 9, 08:35 UTCJul 9, 10:10 UTC1h 35m
2026-07-09 BAW264 - Jul 9, 00:05 UTCJul 9, 05:00 UTC4h 55m
2026-07-08 BAW265 - Jul 8, 11:00 UTCJul 8, 21:30 UTC10h 30m
2026-07-07 BAW248 - Jul 7, 20:05 UTCJul 8, 06:35 UTC10h 30m
2026-07-07 BAW248 - Jul 7, 15:35 UTCJul 7, 18:15 UTC2h 40m
2026-07-07 BAW249 - Jul 7, 10:30 UTCJul 7, 13:30 UTC3h 0m
2026-07-06 BAW249 - Jul 6, 21:25 UTCJul 7, 08:05 UTC10h 40m
2026-07-06 BAW88C - Jul 6, 04:30 UTCJul 6, 13:20 UTC8h 50m
2026-07-05 BAW5VY - Jul 5, 17:15 UTCJul 6, 02:30 UTC9h 15m
2026-07-05 BAW88C YVR → LHR Jul 5, 04:25 UTCJul 5, 12:50 UTC8h 25m
2026-07-04 BAW5VY - Jul 4, 17:00 UTCJul 5, 02:25 UTC9h 25m
2026-07-03 BAW276 - Jul 3, 16:50 UTCJul 4, 12:30 UTC19h 40m
2026-07-03 BAW276 - Jul 3, 15:25 UTCJul 4, 12:30 UTC21h 5m
2026-07-03 BAW252N - Jul 3, 09:10 UTCJul 3, 10:25 UTC1h 15m
2026-07-02 BAW53M - Jul 2, 09:35 UTCJul 2, 10:25 UTC50m
2026-07-01 BAW290 IAD → LHR Jul 1, 23:45 UTCJul 2, 06:25 UTC6h 40m
2026-07-01 BAW291 - Jul 1, 13:45 UTCJul 1, 21:30 UTC7h 45m
2026-07-01 BAW2LJ - Jul 1, 03:00 UTCJul 1, 09:40 UTC6h 40m
2026-06-30 BAW22B - Jun 30, 17:25 UTCJul 1, 00:45 UTC7h 20m
2026-06-30 BAW120 - Jun 30, 01:35 UTCJun 30, 08:50 UTC7h 15m
2026-06-29 BAW21V - Jun 29, 15:14 UTCJun 29, 23:19 UTC8h 5m
2026-06-29 BAW264 - Jun 29, 00:00 UTCJun 29, 09:50 UTC9h 50m
2026-06-28 BAW265 - Jun 28, 11:04 UTCJun 28, 21:24 UTC10h 20m
2026-06-28 BAW64 - Jun 28, 01:59 UTCJun 28, 06:34 UTC4h 35m
2026-06-27 BAW65 - Jun 27, 11:30 UTCJun 27, 15:34 UTC4h 5m
2026-06-27 BAW64 - Jun 27, 00:20 UTCJun 27, 05:10 UTC4h 50m
2026-06-26 BAW65 - Jun 26, 09:20 UTCJun 26, 13:15 UTC3h 55m
2026-06-26 BAW64 - Jun 26, 02:40 UTCJun 26, 05:05 UTC2h 25m
2026-06-25 BAW65 - Jun 25, 09:20 UTCJun 25, 13:20 UTC4h 0m
2026-06-25 BAW64 - Jun 25, 02:35 UTCJun 25, 05:05 UTC2h 30m
2026-06-24 BAW65 - Jun 24, 09:24 UTCJun 24, 13:50 UTC4h 25m
2026-06-23 BAW461 MAD → LHR Jun 23, 16:05 UTCJun 23, 17:50 UTC1h 45m
2026-06-23 BAW46EZ - Jun 23, 11:45 UTCJun 23, 13:29 UTC1h 45m
2026-06-22 BAW248 - Jun 22, 20:00 UTCJun 23, 06:34 UTC10h 35m
2026-06-22 BAW248 - Jun 22, 15:24 UTCJun 22, 17:55 UTC2h 30m
2026-06-22 BAW249 - Jun 22, 10:19 UTCJun 22, 13:19 UTC3h 0m
2026-06-22 BAW249 - Jun 22, 07:49 UTCJun 22, 08:00 UTC10m
2026-06-21 BAW249 - Jun 21, 21:10 UTCJun 22, 07:10 UTC10h 0m
2026-06-21 BAW461 MAD → LHR Jun 21, 15:54 UTCJun 21, 17:45 UTC1h 50m

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

Mode-S 4007FB frequently asked

What is Mode-S code 4007FB?
4007FB is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-YMMP.
Where is Mode-S 4007FB registered?
Mode-S code 4007FB 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 4007FB broadcasting right now?
Yes. Mode-S 4007FB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4007FB, octal 20003773, decimal 4,196,347.
What flights does 4007FB operate?
Mode-S 4007FB has broadcast 20 distinct callsigns, including BAW249, BAW248, BAW5VY, BAW88C, BAW22B.