Apparatus

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sensors Mode-S transponder

4007F4

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-YMMI · BOEING 777-200

Hex
4007F4
Octal
20003764
Decimal
4,196,340
Country
GB
Tail
G-YMMI
Type
B772
Broadcasting now · callsign BAW22B · 37,000 ft
Flights observed
206
Distinct callsigns
20
Country
GB
Last broadcast
23m ago

Current position

4007F4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4007F4 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 2026-06-24
BAW276 - 17 2026-07-09
BAW248 - 17 2026-06-24
BAW88C - 16 2026-06-23
BAW5VY - 15 2026-06-22
BAW118 British Airways 9 2026-05-16
BAW143 British Airways 8 2026-05-31
BAW51B - 7 2026-07-12
BAW50G - 7 2026-07-11
BAW142 British Airways 7 2026-05-31
BAW135 - 7 2026-07-12
BAW134 - 7 2026-07-13
BAW119 British Airways 7 2026-05-15
BAW265 - 6 2026-07-07
BAW264 - 6 2026-07-08
BAW199 British Airways 6 2026-05-30
BAW2LJ - 5 2026-07-14
BAW22B - 5 2026-07-13
BAW198 British Airways 5 2026-05-30
BAW46EZ - 4 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BAW22B - Jul 14, 16:15 UTCJul 14, 17:00 UTC45m
2026-07-14 BAW2LJ BWI → LHR Jul 14, 02:25 UTCJul 14, 09:20 UTC6h 55m
2026-07-13 BAW22B - Jul 13, 17:15 UTCJul 14, 00:15 UTC7h 0m
2026-07-13 BAW134 - Jul 13, 09:55 UTCJul 13, 13:35 UTC3h 40m
2026-07-13 BAW134 - Jul 13, 04:15 UTCJul 13, 09:50 UTC5h 35m
2026-07-12 BAW135 - Jul 12, 17:20 UTCJul 13, 01:50 UTC8h 30m
2026-07-12 BAW51B BOS → LHR Jul 12, 02:25 UTCJul 12, 08:20 UTC5h 55m
2026-07-11 BAW50G LHR → BOS Jul 11, 17:10 UTCJul 11, 23:50 UTC6h 40m
2026-07-11 BAW134 - Jul 11, 09:35 UTCJul 11, 13:40 UTC4h 5m
2026-07-11 BAW134 - Jul 11, 04:15 UTCJul 11, 09:25 UTC5h 10m
2026-07-11 BAW135 - Jul 11, 02:00 UTCJul 11, 02:15 UTC15m
2026-07-10 BAW135 - Jul 10, 17:45 UTCJul 11, 01:15 UTC7h 30m
2026-07-09 BAW276 - Jul 9, 17:05 UTCJul 10, 12:50 UTC19h 45m
2026-07-09 BAW276 - Jul 9, 15:05 UTCJul 10, 12:50 UTC21h 45m
2026-07-09 BAW120 CVG → LHR Jul 9, 01:40 UTCJul 9, 09:00 UTC7h 20m
2026-07-08 BAW21V - Jul 8, 15:20 UTCJul 8, 23:25 UTC8h 5m
2026-07-08 BAW264 - Jul 8, 02:05 UTCJul 8, 11:50 UTC9h 45m
2026-07-07 BAW265 - Jul 7, 13:05 UTCJul 7, 23:40 UTC10h 35m
2026-07-07 BAW2LJ BWI → LHR Jul 7, 02:00 UTCJul 7, 08:35 UTC6h 35m
2026-07-06 BAW22B - Jul 6, 15:55 UTCJul 6, 23:35 UTC7h 40m
2026-07-06 BAW264 - Jul 6, 02:10 UTCJul 6, 12:15 UTC10h 5m
2026-07-05 BAW265 - Jul 5, 13:10 UTCJul 5, 23:55 UTC10h 45m
2026-07-05 BAW290 IAD → LHR Jul 5, 02:05 UTCJul 5, 08:50 UTC6h 45m
2026-07-04 BAW291 - Jul 4, 13:35 UTCJul 4, 21:25 UTC7h 50m
2026-07-02 BAW276 - Jul 2, 17:05 UTCJul 3, 12:30 UTC19h 25m
2026-07-02 BAW276 - Jul 2, 15:20 UTCJul 3, 12:30 UTC21h 10m
2026-07-01 BAW276 - Jul 1, 17:05 UTCJul 2, 12:20 UTC19h 15m
2026-07-01 BAW276 - Jul 1, 15:15 UTCJul 2, 12:20 UTC21h 5m
2026-07-01 BAW172 - Jul 1, 01:30 UTCJul 1, 07:40 UTC6h 10m
2026-06-30 BAW7NY - Jun 30, 09:40 UTCJun 30, 16:35 UTC6h 55m
2026-06-29 BAW64 - Jun 29, 11:04 UTCJun 30, 05:10 UTC18h 5m
2026-06-29 BAW64 - Jun 29, 09:44 UTCJun 30, 05:10 UTC19h 25m
2026-06-28 BAW134 - Jun 28, 04:55 UTCJun 28, 14:04 UTC9h 10m
2026-06-28 BAW135 - Jun 28, 02:20 UTCJun 28, 02:49 UTC30m
2026-06-27 BAW135 - Jun 27, 18:09 UTCJun 27, 22:40 UTC4h 30m
2026-06-27 BAW134 - Jun 27, 04:09 UTCJun 27, 13:30 UTC9h 20m
2026-06-26 BAW135 - Jun 26, 17:04 UTCJun 27, 01:39 UTC8h 35m
2026-06-26 BAW134 - Jun 26, 04:39 UTCJun 26, 13:59 UTC9h 20m
2026-06-25 BAW135 - Jun 25, 17:44 UTCJun 26, 02:40 UTC8h 55m
2026-06-24 BAW248 - Jun 24, 20:44 UTCJun 25, 07:30 UTC10h 45m
2026-06-24 BAW248 - Jun 24, 15:24 UTCJun 24, 17:59 UTC2h 35m
2026-06-24 BAW249 - Jun 24, 10:39 UTCJun 24, 13:30 UTC2h 50m
2026-06-23 BAW249 - Jun 23, 22:10 UTCJun 24, 09:00 UTC10h 50m
2026-06-23 BAW88C - Jun 23, 04:25 UTCJun 23, 13:09 UTC8h 45m
2026-06-22 BAW5VY - Jun 22, 16:54 UTCJun 23, 01:59 UTC9h 5m
2026-06-21 BAW276 - Jun 21, 19:05 UTCJun 22, 13:44 UTC18h 40m
2026-06-21 BAW276 - Jun 21, 17:10 UTCJun 22, 13:44 UTC20h 35m
2026-06-20 BAW248 - Jun 20, 20:05 UTCJun 21, 06:55 UTC10h 50m
2026-06-20 BAW248 - Jun 20, 15:39 UTCJun 20, 18:19 UTC2h 40m
2026-06-20 BAW249 GIG → EZE Jun 20, 10:20 UTCJun 20, 13:14 UTC2h 55m

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

Mode-S 4007F4 frequently asked

What is Mode-S code 4007F4?
4007F4 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-YMMI.
Where is Mode-S 4007F4 registered?
Mode-S code 4007F4 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 4007F4 broadcasting right now?
Yes. Mode-S 4007F4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4007F4, octal 20003764, decimal 4,196,340.
What flights does 4007F4 operate?
Mode-S 4007F4 has broadcast 20 distinct callsigns, including BAW249, BAW276, BAW248, BAW88C, BAW5VY.