Apparatus

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sensors Mode-S transponder

4007FA

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-YMMO · BOEING 777-200

Hex
4007FA
Octal
20003772
Decimal
4,196,346
Country
GB
Tail
G-YMMO
Type
B772
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
215
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 4007FA.

Country allocation

The ICAO 24-bit address 4007FA 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
BAW134 British Airways 17 2026-07-25
BAW248 - 16 2026-07-02
BAW276 British Airways 15 2026-07-21
BAW249 - 14 2026-07-01
BAW22B British Airways 10 2026-07-26
BAW118 British Airways 10 2026-05-26
BAW51B British Airways 9 2026-07-26
BAW50G British Airways 9 2026-07-25
BAW2LJ - 8 2026-07-17
BAW265 - 7 2026-07-03
BAW264 - 7 2026-07-04
BAW135 British Airways 7 2026-07-24
BAW119 British Airways 7 2026-05-25
BAW88C - 6 2026-06-28
BAW461 British Airways 6 2026-06-13
BAW5VY - 5 2026-06-27
BAW46EZ British Airways 5 2026-06-13
BAW21V - 5 2026-07-19
BAW12TB - 5 2026-07-14
BAW290 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BAW22B LHR → BWI Jul 26, 16:20 UTCJul 26, 22:30 UTC6h 10m
2026-07-26 BAW51B BOS → LHR Jul 26, 02:30 UTCJul 26, 08:25 UTC5h 56m
2026-07-25 BAW50G LHR → BOS Jul 25, 17:00 UTCJul 25, 23:40 UTC6h 40m
2026-07-25 BAW134 BOM → LHR Jul 25, 04:15 UTCJul 25, 13:35 UTC9h 20m
2026-07-24 BAW135 LHR → BOM Jul 24, 17:20 UTCJul 25, 01:40 UTC8h 20m
2026-07-24 BAW134 BOM → LHR Jul 24, 04:25 UTCJul 24, 13:55 UTC9h 30m
2026-07-23 BAW135 LHR → BOM Jul 23, 17:20 UTCJul 24, 02:00 UTC8h 40m
2026-07-23 BAW134 BOM → LHR Jul 23, 04:25 UTCJul 23, 13:50 UTC9h 25m
2026-07-22 BAW135 LHR → BOM Jul 22, 17:35 UTCJul 23, 02:15 UTC8h 40m
2026-07-21 BAW276 HYD → LHR Jul 21, 18:35 UTCJul 22, 13:00 UTC18h 25m
2026-07-21 BAW277 - Jul 21, 16:35 UTCJul 22, 13:00 UTC20h 25m
2026-07-21 BAW277 - Jul 21, 15:50 UTCJul 22, 13:00 UTC21h 10m
2026-07-20 BAW120 CVG → LHR Jul 20, 02:50 UTCJul 20, 10:15 UTC7h 25m
2026-07-19 BAW21V - Jul 19, 15:25 UTCJul 19, 23:25 UTC8h 0m
2026-07-18 BAW276 HYD → LHR Jul 18, 18:35 UTCJul 19, 12:40 UTC18h 5m
2026-07-18 BAW276 HYD → LHR Jul 18, 16:35 UTCJul 19, 12:40 UTC20h 5m
2026-07-18 BAW276 HYD → LHR Jul 18, 15:45 UTCJul 19, 12:40 UTC20h 55m
2026-07-18 BAW86 YVR → LHR Jul 18, 01:10 UTCJul 18, 09:45 UTC8h 36m
2026-07-17 BAW87 LHR → YVR Jul 17, 11:45 UTCJul 17, 21:05 UTC9h 20m
2026-07-17 BAW2LJ - Jul 17, 01:45 UTCJul 17, 08:35 UTC6h 50m
2026-07-16 BAW22B - Jul 16, 15:55 UTCJul 16, 23:15 UTC7h 20m
2026-07-15 BAW276 LHR → LHR Jul 15, 15:00 UTCJul 16, 12:14 UTC21h 15m
2026-07-15 BAW9153 LGW → LHR Jul 15, 11:25 UTCJul 15, 11:45 UTC20m
2026-07-14 BAW12TB TPA → LGW Jul 14, 22:55 UTCJul 15, 07:25 UTC8h 30m
2026-07-14 BAW12J LGW → TPA Jul 14, 11:45 UTCJul 14, 20:25 UTC8h 40m
2026-07-13 BAW12TB TPA → LGW Jul 13, 23:40 UTCJul 14, 08:10 UTC8h 30m
2026-07-13 BAW12J LGW → TPA Jul 13, 12:20 UTCJul 13, 21:20 UTC9h 0m
2026-07-11 BAW12TB TPA → LGW Jul 11, 23:55 UTCJul 12, 08:10 UTC8h 15m
2026-07-11 BAW12J LGW → TPA Jul 11, 11:50 UTCJul 11, 20:35 UTC8h 45m
2026-07-10 BAW2160 LGW → LGW Jul 10, 11:30 UTCJul 11, 05:20 UTC17h 50m
2026-07-10 BAW12TB TPA → LGW Jul 10, 00:05 UTCJul 10, 08:25 UTC8h 20m
2026-07-09 BAW2165 LGW → TPA Jul 9, 13:00 UTCJul 9, 21:55 UTC8h 55m
2026-07-09 BAW38W MCO → LGW Jul 9, 01:50 UTCJul 9, 09:45 UTC7h 55m
2026-07-08 BAW39D - Jul 8, 14:00 UTCJul 8, 22:55 UTC8h 55m
2026-07-07 BAW12TB TPA → LGW Jul 7, 23:55 UTCJul 8, 08:20 UTC8h 25m
2026-07-07 BAW12J LGW → TPA Jul 7, 12:25 UTCJul 7, 21:15 UTC8h 50m
2026-07-07 BAW9153 - Jul 7, 09:00 UTCJul 7, 09:20 UTC20m
2026-07-06 BAW290 IAD → LHR Jul 6, 03:25 UTCJul 6, 09:55 UTC6h 30m
2026-07-05 BAW291 - Jul 5, 13:25 UTCJul 5, 21:05 UTC7h 40m
2026-07-05 BAW86 YVR → LHR Jul 5, 01:20 UTCJul 5, 09:55 UTC8h 35m
2026-07-04 BAW87 LHR → YVR Jul 4, 13:50 UTCJul 4, 23:15 UTC9h 25m
2026-07-04 BAW264 - Jul 4, 00:15 UTCJul 4, 10:05 UTC9h 50m
2026-07-03 BAW265 - Jul 3, 10:55 UTCJul 3, 21:45 UTC10h 50m
2026-07-02 BAW248 - Jul 2, 20:25 UTCJul 3, 06:55 UTC10h 30m
2026-07-02 BAW248 - Jul 2, 15:35 UTCJul 2, 17:30 UTC1h 55m
2026-07-01 BAW249 - Jul 1, 21:20 UTCJul 2, 13:35 UTC16h 15m
2026-06-30 BAW62 EBB → LHR Jun 30, 20:35 UTCJul 1, 15:05 UTC18h 30m
2026-06-30 BAW62 EBB → LHR Jun 30, 19:10 UTCJul 1, 15:05 UTC19h 55m
2026-06-29 BAW276 - Jun 29, 15:19 UTCJun 30, 12:30 UTC21h 11m
2026-06-29 BAW51B BOS → LHR Jun 29, 02:09 UTCJun 29, 07:50 UTC5h 40m

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

Mode-S 4007FA frequently asked

What is Mode-S code 4007FA?
4007FA is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-YMMO.
Where is Mode-S 4007FA registered?
Mode-S code 4007FA 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 4007FA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4007FA, octal 20003772, decimal 4,196,346.
What flights does 4007FA operate?
Mode-S 4007FA has broadcast 20 distinct callsigns, including BAW134, BAW248, BAW276, BAW249, BAW22B.