Apparatus

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sensors Mode-S transponder

4077E0

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-NEOW · AIRBUS A-321neo

Hex
4077E0
Octal
20073740
Decimal
4,224,992
Country
GB
Tail
G-NEOW
Type
A21N
Broadcasting now · callsign BAW507 · 11,175 ft
Flights observed
224
Distinct callsigns
20
Country
GB
Last broadcast
25m ago

Current position

4077E0 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4077E0 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
SHT9L - 3 2026-05-09
SHT8K - 3 2026-05-09
SHT7U - 3 2026-04-27
SHT6Y - 3 2026-04-27
BAW74E British Airways 3 2026-05-22
BAW615 British Airways 3 2026-05-04
BAW575 British Airways 3 2026-05-22
BAW451 British Airways 3 2026-05-27
BAW450 British Airways 3 2026-05-27
BAW422 British Airways 3 2026-05-30
BAW396U British Airways 3 2026-04-15
SHT7S - 2 2026-05-29
SHT6G - 2 2026-05-29
SHT3G - 2 2026-05-21
SHT2T - 2 2026-05-20
SHT19T - 2 2026-04-16
SHT18F - 2 2026-04-16
SHT13C - 2 2026-04-30
SHT12H - 2 2026-04-30
BAW9CJ - 2 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BAW507 LIS → LHR May 30, 18:30 UTCMay 30, 20:00 UTC1h 30m
2026-05-30 BAW506 LHR → FAO May 30, 14:45 UTCMay 30, 17:00 UTC2h 15m
2026-05-30 BAW423 AMS → LHR May 30, 10:30 UTCMay 30, 12:45 UTC2h 15m
2026-05-30 BAW422 LHR → VLC May 30, 06:45 UTCMay 30, 09:00 UTC2h 15m
2026-05-29 BAW485G BCN → LHR May 29, 20:05 UTCMay 29, 21:55 UTC1h 50m
2026-05-29 BAW484C LHR → BCN May 29, 16:35 UTCMay 29, 18:15 UTC1h 40m
2026-05-29 SHT7S GLA → LHR May 29, 13:50 UTCMay 29, 14:50 UTC1h 0m
2026-05-29 SHT6G - May 29, 11:35 UTCMay 29, 12:35 UTC1h 0m
2026-05-29 BAW721 GVA → LHR May 29, 05:30 UTCMay 29, 09:20 UTC3h 50m
2026-05-28 BAW720 LHR → ZRH May 28, 18:35 UTCMay 28, 21:40 UTC3h 5m
2026-05-28 BAW705 VIE → LHR May 28, 12:05 UTCMay 28, 16:35 UTC4h 30m
2026-05-28 BAW704 LHR → VIE May 28, 06:20 UTCMay 28, 10:25 UTC4h 5m
2026-05-27 BAW995 BER → LHR May 27, 18:20 UTCMay 27, 19:50 UTC1h 30m
2026-05-27 BAW994 LHR → BER May 27, 15:50 UTCMay 27, 17:10 UTC1h 20m
2026-05-27 BAW451 PMI → LHR May 27, 12:00 UTCMay 27, 13:55 UTC1h 55m
2026-05-27 BAW450 LHR → PMI May 27, 08:10 UTCMay 27, 10:10 UTC2h 0m
2026-05-26 BAW30N CDG → LHR May 26, 20:29 UTCMay 26, 21:09 UTC40m
2026-05-26 BAW4DC LHR → CDG May 26, 18:30 UTCMay 26, 19:10 UTC40m
2026-05-26 BAW469 VCE → LHR May 26, 13:54 UTCMay 26, 15:49 UTC1h 55m
2026-05-26 BAW468 LHR → VCE May 26, 10:34 UTCMay 26, 12:24 UTC1h 50m
2026-05-26 BAW487E BCN → LHR May 26, 05:54 UTCMay 26, 07:49 UTC1h 55m
2026-05-25 BAW486 LHR → BCN May 25, 18:45 UTCMay 25, 20:19 UTC1h 34m
2026-05-25 BAW695 VIE → LHR May 25, 13:40 UTCMay 25, 17:05 UTC3h 25m
2026-05-25 BAW694 ADB → LHR May 25, 08:45 UTCMay 25, 12:10 UTC3h 25m
2026-05-24 BAW739 GVA → LHR May 24, 18:20 UTCMay 24, 19:35 UTC1h 15m
2026-05-24 BAW73NA LHR → GVA May 24, 15:40 UTCMay 24, 16:55 UTC1h 15m
2026-05-24 BAW305 CDG → LHR May 24, 13:00 UTCMay 24, 13:45 UTC45m
2026-05-24 BAW3VH LHR → CDG May 24, 10:30 UTCMay 24, 11:05 UTC35m
2026-05-24 BAW531 SPU → LHR May 24, 06:10 UTCMay 24, 08:35 UTC2h 25m
2026-05-23 BAW530 LHR → SPU May 23, 17:30 UTCMay 23, 19:40 UTC2h 11m
2026-05-23 BAW655 CFU → LHR May 23, 11:35 UTCMay 23, 15:10 UTC3h 35m
2026-05-23 BAW654 LHR → CFU May 23, 06:25 UTCMay 23, 09:35 UTC3h 10m
2026-05-22 SHT13W NCL → LHR May 22, 19:35 UTCMay 22, 20:20 UTC45m
2026-05-22 SHT12T - May 22, 18:00 UTCMay 22, 18:40 UTC40m
2026-05-22 BAW575 LIN → LHR May 22, 14:20 UTCMay 22, 15:45 UTC1h 25m
2026-05-22 BAW74E LHR → LIN May 22, 11:35 UTCMay 22, 13:05 UTC1h 30m
2026-05-22 SHT9A EDI → LHR May 22, 08:45 UTCMay 22, 09:50 UTC1h 5m
2026-05-22 SHT8D - May 22, 06:20 UTCMay 22, 07:15 UTC55m
2026-05-21 BAW391 BRU → LHR May 21, 19:25 UTCMay 21, 20:05 UTC40m
2026-05-21 BAW9CJ - May 21, 17:40 UTCMay 21, 18:25 UTC45m
2026-05-21 BAW551G FCO → LHR May 21, 13:55 UTCMay 21, 16:01 UTC2h 5m
2026-05-21 BAW550 LHR → VCE May 21, 10:05 UTCMay 21, 11:55 UTC1h 50m
2026-05-21 SHT3G MAN → LHR May 21, 07:35 UTCMay 21, 08:20 UTC45m
2026-05-20 SHT2T - May 20, 20:45 UTCMay 20, 21:15 UTC30m
2026-05-20 BAW333 NCE → LHR May 20, 16:40 UTCMay 20, 18:40 UTC2h 0m
2026-05-20 BAW332 LHR → NCE May 20, 13:35 UTCMay 20, 15:05 UTC1h 30m
2026-05-20 BAW327 CDG → LHR May 20, 09:55 UTCMay 20, 11:50 UTC1h 55m
2026-05-20 BAW326 LHR → CDG May 20, 06:45 UTCMay 20, 08:15 UTC1h 30m
2026-05-19 BAW719 ZRH → LHR May 19, 17:20 UTCMay 19, 20:35 UTC3h 15m
2026-05-19 BAW718 LHR → ZRH May 19, 12:25 UTCMay 19, 15:30 UTC3h 5m

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

Mode-S 4077E0 frequently asked

What is Mode-S code 4077E0?
4077E0 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-NEOW.
Where is Mode-S 4077E0 registered?
Mode-S code 4077E0 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 4077E0 broadcasting right now?
Yes. Mode-S 4077E0 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4077E0, octal 20073740, decimal 4,224,992.
What flights does 4077E0 operate?
Mode-S 4077E0 has broadcast 20 distinct callsigns, including SHT9L, SHT8K, SHT7U, SHT6Y, BAW74E.