Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4007EF

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-YMMD · BOEING 777-200

Hex
4007EF
Octal
20003757
Decimal
4,196,335
Country
GB
Tail
G-YMMD
Type
B772
No current signal · last broadcast 6h ago
Flights observed
128
Distinct callsigns
20
Country
GB
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 4007EF.

Country allocation

The ICAO 24-bit address 4007EF 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
BAW2203 - 15 2026-07-12
BAW2202 - 15 2026-07-13
BAW2064 - 8 2026-06-29
BAW9VA - 7 2026-07-06
BAW5KW - 7 2026-07-07
BAW25K - 6 2026-06-21
BAW2231 British Airways 6 2026-06-06
BAW2230 British Airways 6 2026-06-07
BAW2065 - 6 2026-06-27
BAW63H - 5 2026-07-03
BAW43C - 5 2026-07-03
BAW2239 - 4 2026-07-14
BAW12J British Airways 4 2026-06-04
BAW39D - 3 2026-07-11
BAW38W - 3 2026-07-12
BAW23K British Airways 3 2026-05-04
BAW2279 British Airways 3 2026-06-26
BAW2278 British Airways 3 2026-06-27
BAW12TB British Airways 3 2026-06-04
BAW2238 - 2 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BAW2238 - Jul 14, 21:30 UTCJul 14, 22:00 UTC30m
2026-07-14 BAW2239 - Jul 14, 10:55 UTCJul 14, 19:05 UTC8h 10m
2026-07-13 BAW2202 CUN → LGW Jul 13, 01:01 UTCJul 13, 10:15 UTC9h 15m
2026-07-12 BAW2203 LGW → CUN Jul 12, 12:50 UTCJul 12, 22:25 UTC9h 35m
2026-07-12 BAW38W MCO → LGW Jul 12, 01:40 UTCJul 12, 09:40 UTC8h 0m
2026-07-11 BAW39D LGW → MCO Jul 11, 14:00 UTCJul 11, 22:40 UTC8h 40m
2026-07-11 BAW2202 CUN → LGW Jul 11, 00:50 UTCJul 11, 10:10 UTC9h 20m
2026-07-10 BAW2203 LGW → CUN Jul 10, 12:55 UTCJul 10, 22:40 UTC9h 45m
2026-07-10 BAW38W MCO → LGW Jul 10, 01:25 UTCJul 10, 09:30 UTC8h 5m
2026-07-09 BAW39D LGW → MCO Jul 9, 13:55 UTCJul 9, 22:35 UTC8h 40m
2026-07-08 BAW2202 CUN → LGW Jul 8, 04:00 UTCJul 8, 13:00 UTC9h 0m
2026-07-07 BAW2203 LGW → CUN Jul 7, 16:15 UTCJul 8, 01:55 UTC9h 40m
2026-07-07 BAW5KW - Jul 7, 07:10 UTCJul 7, 10:25 UTC3h 15m
2026-07-07 BAW5KW - Jul 7, 02:20 UTCJul 7, 02:30 UTC10m
2026-07-06 BAW2159 - Jul 6, 20:35 UTCJul 7, 00:50 UTC4h 15m
2026-07-06 BAW9VA - Jul 6, 11:05 UTCJul 6, 12:20 UTC1h 15m
2026-07-05 BAW2066 LGW → LGW Jul 5, 13:25 UTCJul 6, 04:25 UTC15h 0m
2026-07-05 BAW2202 - Jul 5, 05:10 UTCJul 5, 10:05 UTC4h 55m
2026-07-05 BAW2202 - Jul 5, 00:55 UTCJul 5, 02:40 UTC1h 45m
2026-07-04 BAW2203 LGW → CUN Jul 4, 13:10 UTCJul 4, 22:50 UTC9h 40m
2026-07-03 BAW63H MCO → LGW Jul 3, 21:25 UTCJul 4, 05:10 UTC7h 45m
2026-07-03 BAW43C LGW → MCO Jul 3, 10:15 UTCJul 3, 18:55 UTC8h 40m
2026-07-02 BAW63H MCO → LGW Jul 2, 21:35 UTCJul 3, 05:25 UTC7h 50m
2026-07-02 BAW43C LGW → MCO Jul 2, 10:10 UTCJul 2, 18:55 UTC8h 45m
2026-07-01 BAW63H MCO → LGW Jul 1, 21:25 UTCJul 2, 05:25 UTC8h 0m
2026-07-01 BAW43C LGW → MCO Jul 1, 10:10 UTCJul 1, 18:55 UTC8h 45m
2026-06-30 BAW2239 LGW → LGW Jun 30, 10:20 UTCJul 1, 05:45 UTC19h 25m
2026-06-29 BAW63H - Jun 29, 22:35 UTCJun 30, 06:55 UTC8h 21m
2026-06-29 BAW43C LGW → MCO Jun 29, 10:10 UTCJun 29, 19:15 UTC9h 5m
2026-06-29 BAW2064 - Jun 29, 00:05 UTCJun 29, 04:34 UTC4h 30m
2026-06-27 BAW2065 - Jun 27, 20:24 UTCJun 27, 23:45 UTC3h 20m
2026-06-27 BAW2278 YVR → LGW Jun 27, 02:09 UTCJun 27, 09:44 UTC7h 35m
2026-06-26 BAW2279 LGW → YVR Jun 26, 14:44 UTCJun 26, 23:55 UTC9h 10m
2026-06-24 BAW2064 - Jun 24, 23:45 UTCJun 25, 04:10 UTC4h 25m
2026-06-23 BAW2065 - Jun 23, 23:50 UTCJun 24, 23:45 UTC23h 55m
2026-06-23 BAW2065 - Jun 23, 20:34 UTCJun 24, 00:44 UTC4h 10m
2026-06-22 BAW5KW - Jun 22, 21:19 UTCJun 23, 10:10 UTC12h 50m
2026-06-22 BAW5KW - Jun 22, 11:50 UTCJun 23, 10:10 UTC22h 20m
2026-06-22 BAW9VA - Jun 22, 10:55 UTCJun 23, 09:45 UTC22h 50m
2026-06-21 BAW2067 LGW → ACC Jun 21, 13:34 UTCJun 22, 04:44 UTC15h 10m
2026-06-21 BAW25K - Jun 21, 07:20 UTCJun 21, 08:54 UTC1h 35m
2026-06-20 BAW25K LGW → LGW Jun 20, 12:30 UTCJun 21, 08:54 UTC20h 25m
2026-06-19 BAW2160 LGW → LGW Jun 19, 09:44 UTCJun 20, 03:44 UTC18h 0m
2026-06-14 BAW2278 YVR → LGW Jun 14, 23:00 UTCJun 15, 08:20 UTC9h 20m
2026-06-14 BAW2279 LGW → YVR Jun 14, 11:15 UTCJun 14, 20:25 UTC9h 10m
2026-06-12 BAW2160 ISB → LGW Jun 12, 10:55 UTCJun 13, 04:50 UTC17h 54m
2026-06-11 BAW2239 LGW → POS Jun 11, 12:05 UTCJun 12, 07:10 UTC19h 6m
2026-06-10 BAW2202 CUN → LGW Jun 10, 02:00 UTCJun 10, 10:55 UTC8h 55m
2026-06-09 BAW2203 LGW → CUN Jun 9, 13:55 UTCJun 9, 23:55 UTC10h 0m
2026-06-08 BAW2278 YVR → LGW Jun 8, 23:20 UTCJun 9, 08:00 UTC8h 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-YMMD page for operator, model, and routing details .

Mode-S 4007EF frequently asked

What is Mode-S code 4007EF?
4007EF is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-YMMD.
Where is Mode-S 4007EF registered?
Mode-S code 4007EF 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 4007EF broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4007EF, octal 20003757, decimal 4,196,335.
What flights does 4007EF operate?
Mode-S 4007EF has broadcast 20 distinct callsigns, including BAW2203, BAW2202, BAW2064, BAW9VA, BAW5KW.