Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast 2h ago
Flights observed
111
Distinct callsigns
20
Country
GB
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4007FB.

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 British Airways 13 2026-05-24
BAW248 British Airways 13 2026-05-25
BAW138 British Airways 9 2026-04-18
BAW139 British Airways 7 2026-04-17
BAW118 British Airways 7 2026-05-29
BAW5VY British Airways 6 2026-05-10
BAW198 British Airways 6 2026-05-05
BAW143 British Airways 6 2026-05-16
BAW142 British Airways 6 2026-05-16
BAW88C British Airways 5 2026-05-11
BAW119 British Airways 5 2026-05-28
BAW22B British Airways 4 2026-05-29
BAW2LJ British Airways 3 2026-05-26
BAW199 British Airways 3 2026-05-05
BAW135 British Airways 3 2026-04-29
BAW134 British Airways 3 2026-04-30
BAW265 British Airways 2 2026-05-09
BAW264 British Airways 2 2026-05-09
BAW21V British Airways 2 2026-05-27
BAW120 British Airways 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW22B LHR → BWI May 29, 16:15 UTCMay 29, 23:40 UTC7h 25m
2026-05-29 BAW118 BLR → LHR May 29, 01:50 UTCMay 29, 12:20 UTC10h 30m
2026-05-28 BAW119 LHR → BLR May 28, 13:40 UTCMay 28, 22:55 UTC9h 15m
2026-05-28 BAW120 CVG → LHR May 28, 01:40 UTCMay 28, 08:55 UTC7h 15m
2026-05-27 BAW21V LHR → CVG May 27, 15:25 UTCMay 27, 23:15 UTC7h 50m
2026-05-27 BAW118 BLR → LHR May 27, 01:29 UTCMay 27, 11:50 UTC10h 20m
2026-05-26 BAW119 LHR → BLR May 26, 13:40 UTCMay 26, 23:05 UTC9h 25m
2026-05-26 BAW2LJ BWI → LHR May 26, 01:44 UTCMay 26, 08:30 UTC6h 45m
2026-05-25 BAW22B LHR → BWI May 25, 16:10 UTCMay 25, 23:40 UTC7h 30m
2026-05-25 BAW248 GIG → LHR May 25, 01:55 UTCMay 25, 12:00 UTC10h 5m
2026-05-24 BAW248 GIG → LHR May 24, 15:40 UTCMay 24, 18:00 UTC2h 20m
2026-05-24 BAW249 LHR → GIG May 24, 10:30 UTCMay 24, 13:25 UTC2h 55m
2026-05-23 BAW249 LHR → GIG May 23, 21:05 UTCMay 24, 07:55 UTC10h 50m
2026-05-23 BAW120 CVG → LHR May 23, 02:15 UTCMay 23, 09:20 UTC7h 4m
2026-05-22 BAW21V LHR → CVG May 22, 15:30 UTCMay 22, 23:20 UTC7h 50m
2026-05-22 BAW2LJ BWI → LHR May 22, 02:00 UTCMay 22, 08:30 UTC6h 30m
2026-05-21 BAW22B LHR → BWI May 21, 15:50 UTCMay 21, 23:15 UTC7h 25m
2026-05-21 BAW118 BLR → LHR May 21, 02:35 UTCMay 21, 12:00 UTC9h 25m
2026-05-21 BAW118 BLR → LHR May 21, 01:50 UTCMay 21, 02:00 UTC10m
2026-05-20 BAW119 LHR → BLR May 20, 13:20 UTCMay 20, 22:45 UTC9h 25m
2026-05-19 BAW248 GIG → LHR May 19, 19:55 UTCMay 20, 06:30 UTC10h 36m
2026-05-19 BAW248 GIG → LHR May 19, 15:30 UTCMay 19, 18:00 UTC2h 30m
2026-05-19 BAW249 LHR → GIG May 19, 10:30 UTCMay 19, 13:30 UTC3h 0m
2026-05-18 BAW249 LHR → GIG May 18, 21:30 UTCMay 19, 08:40 UTC11h 10m
2026-05-16 BAW142 DEL → LHR May 16, 20:55 UTCMay 17, 05:50 UTC8h 55m
2026-05-16 BAW143 LHR → DEL May 16, 10:11 UTCMay 16, 18:05 UTC7h 55m
2026-05-15 BAW142 DEL → LHR May 15, 20:40 UTCMay 16, 05:25 UTC8h 45m
2026-05-15 BAW143 LHR → DEL May 15, 09:45 UTCMay 15, 17:45 UTC7h 59m
2026-05-11 BAW88C YVR → LHR May 11, 04:20 UTCMay 11, 13:00 UTC8h 40m
2026-05-10 BAW5VY LHR → YVR May 10, 16:59 UTCMay 11, 02:15 UTC9h 15m
2026-05-09 BAW264 IAD → LHR May 9, 23:55 UTCMay 10, 10:10 UTC10h 15m
2026-05-09 BAW265 LHR → SAN May 9, 11:00 UTCMay 9, 21:40 UTC10h 40m
2026-05-08 BAW142 DEL → LHR May 8, 20:50 UTCMay 9, 05:50 UTC9h 0m
2026-05-08 BAW143 LHR → DEL May 8, 09:59 UTCMay 8, 18:15 UTC8h 15m
2026-05-07 BAW142 DEL → LHR May 7, 20:30 UTCMay 8, 05:44 UTC9h 14m
2026-05-07 BAW143 LHR → DEL May 7, 09:50 UTCMay 7, 17:50 UTC8h 0m
2026-05-05 BAW198 BOM → LHR May 5, 22:50 UTCMay 6, 17:30 UTC18h 40m
2026-05-05 BAW198 BOM → LHR May 5, 20:50 UTCMay 6, 17:30 UTC20h 40m
2026-05-05 BAW199 LHR → BOM May 5, 20:20 UTCMay 6, 17:30 UTC21h 10m
2026-05-04 BAW198 BOM → LHR May 4, 22:50 UTCMay 5, 17:35 UTC18h 45m
2026-05-04 BAW198 BOM → LHR May 4, 20:50 UTCMay 5, 17:35 UTC20h 45m
2026-05-04 BAW198 BOM → LHR May 4, 20:25 UTCMay 5, 17:35 UTC21h 10m
2026-05-04 BAW142 DEL → LHR May 4, 00:50 UTCMay 4, 09:50 UTC9h 0m
2026-05-03 BAW143 LHR → DEL May 3, 09:45 UTCMay 3, 22:20 UTC12h 35m
2026-05-02 BAW248 GIG → LHR May 2, 20:00 UTCMay 3, 06:40 UTC10h 39m
2026-05-02 BAW248 GIG → LHR May 2, 15:30 UTCMay 2, 18:00 UTC2h 30m
2026-05-02 BAW249 LHR → GIG May 2, 10:15 UTCMay 2, 13:20 UTC3h 5m
2026-05-01 BAW249 LHR → GIG May 1, 21:05 UTCMay 2, 08:15 UTC11h 10m
2026-05-01 BAW198 BOM → LHR May 1, 08:50 UTCMay 1, 17:20 UTC8h 30m
2026-05-01 BAW199 LHR → BOM May 1, 04:35 UTCMay 1, 05:05 UTC30m

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?
No active broadcast right now. Last signal was 2h ago.
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, BAW138, BAW139, BAW118.