Apparatus

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sensors Mode-S transponder

4076CD

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-TTNJ · AIRBUS A-320neo

Hex
4076CD
Octal
20073315
Decimal
4,224,717
Country
GB
Tail
G-TTNJ
Type
A20N
No current signal · last broadcast 5h ago
Flights observed
203
Distinct callsigns
20
Country
GB
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 4076CD.

Country allocation

The ICAO 24-bit address 4076CD 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
BAW899 - 3 2026-04-15
BAW898 British Airways 3 2026-04-15
BAW689 - 3 2026-04-16
BAW639 British Airways 3 2026-04-17
BAW638 British Airways 3 2026-04-16
BAW505 British Airways 3 2026-05-27
BAW487E British Airways 3 2026-04-21
BAW42LX British Airways 3 2026-05-08
BAW421 British Airways 3 2026-05-08
SHT9X - 2 2026-05-20
SHT8P - 2 2026-05-19
SHT5T - 2 2026-05-04
SHT4F - 2 2026-05-04
SHT19Q - 2 2026-05-06
SHT18H - 2 2026-05-06
SHT17Y - 2 2026-05-22
SHT17Q - 2 2026-04-18
SHT16H - 2 2026-04-17
SHT16C - 2 2026-05-22
SHT15D - 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW397 BRU → LHR May 29, 10:05 UTCMay 29, 20:50 UTC10h 45m
2026-05-27 BAW505 FAO → LHR May 27, 15:45 UTCMay 27, 18:10 UTC2h 25m
2026-05-27 BAW5DW LHR → LIS May 27, 12:05 UTCMay 27, 14:20 UTC2h 15m
2026-05-27 BAW315 CDG → LHR May 27, 06:25 UTCMay 27, 07:30 UTC1h 6m
2026-05-26 BAW314S LHR → CDG May 26, 20:24 UTCMay 26, 21:04 UTC40m
2026-05-26 BAW42Y LYS → LHR May 26, 17:20 UTCMay 26, 18:30 UTC1h 10m
2026-05-26 BAW41YA LHR → LYS May 26, 14:55 UTCMay 26, 16:05 UTC1h 10m
2026-05-26 BAW671 BJV → LHR May 26, 09:55 UTCMay 26, 12:45 UTC2h 50m
2026-05-26 BAW670 LHR → BJV May 26, 05:30 UTCMay 26, 08:34 UTC3h 5m
2026-05-25 BAW995 BER → LHR May 25, 18:50 UTCMay 25, 20:19 UTC1h 29m
2026-05-25 BAW994 LHR → BER May 25, 16:20 UTCMay 25, 17:45 UTC1h 25m
2026-05-25 BAW381 TIA → LHR May 25, 11:30 UTCMay 25, 14:20 UTC2h 50m
2026-05-25 BAW380 LHR → MRS May 25, 07:30 UTCMay 25, 10:00 UTC2h 30m
2026-05-23 BAW671 BJV → LHR May 23, 09:35 UTCMay 23, 12:35 UTC3h 0m
2026-05-23 BAW670 LHR → BJV May 23, 05:35 UTCMay 23, 08:30 UTC2h 55m
2026-05-22 SHT5P - May 22, 20:05 UTCMay 22, 21:00 UTC55m
2026-05-22 SHT4G - May 22, 18:25 UTCMay 22, 19:15 UTC50m
2026-05-22 BAW8RM BER → LHR May 22, 15:25 UTCMay 22, 16:55 UTC1h 30m
2026-05-22 BAW992G LHR → BER May 22, 12:50 UTCMay 22, 14:15 UTC1h 25m
2026-05-22 SHT17Y - May 22, 10:00 UTCMay 22, 11:15 UTC1h 15m
2026-05-22 SHT16C - May 22, 07:10 UTCMay 22, 08:15 UTC1h 5m
2026-05-20 BAW505 FAO → LHR May 20, 17:05 UTCMay 20, 19:10 UTC2h 5m
2026-05-20 BAW505 FAO → LHR May 20, 15:55 UTCMay 20, 16:00 UTC5m
2026-05-20 BAW5DW LHR → LIS May 20, 12:00 UTCMay 20, 14:15 UTC2h 15m
2026-05-20 SHT15D - May 20, 09:40 UTCMay 20, 10:30 UTC50m
2026-05-20 SHT14L - May 20, 07:45 UTCMay 20, 08:20 UTC35m
2026-05-20 SHT9X EDI → LHR May 20, 05:05 UTCMay 20, 06:10 UTC1h 5m
2026-05-19 SHT8P - May 19, 20:10 UTCMay 19, 21:05 UTC55m
2026-05-19 BAW577 FCO → LHR May 19, 16:35 UTCMay 19, 18:20 UTC1h 45m
2026-05-19 BAW576 LHR → LIN May 19, 13:45 UTCMay 19, 15:15 UTC1h 30m
2026-05-19 BAW547 FCO → LHR May 19, 09:40 UTCMay 19, 11:55 UTC2h 15m
2026-05-19 BAW5PQ LHR → FCO May 19, 05:45 UTCMay 19, 07:40 UTC1h 55m
2026-05-18 BAW593K LIN → LHR May 18, 19:20 UTCMay 18, 21:30 UTC2h 10m
2026-05-18 BAW592 VCE → LHR May 18, 17:15 UTCMay 18, 18:00 UTC45m
2026-05-18 BAW592 VCE → LHR May 18, 16:25 UTCMay 18, 17:10 UTC45m
2026-05-18 BAW853S PRG → LHR May 18, 12:40 UTCMay 18, 14:15 UTC1h 35m
2026-05-18 BAW852 LHR → PRG May 18, 10:00 UTCMay 18, 11:35 UTC1h 35m
2026-05-18 BAW729 GVA → LHR May 18, 06:01 UTCMay 18, 07:55 UTC1h 55m
2026-05-17 BAW78H LHR → GVA May 17, 19:10 UTCMay 17, 21:01 UTC1h 50m
2026-05-17 BAW867 BUD → LHR May 17, 15:35 UTCMay 17, 17:40 UTC2h 5m
2026-05-17 BAW866H LHR → BUD May 17, 12:05 UTCMay 17, 14:10 UTC2h 5m
2026-05-17 BAW787 GVA → LHR May 17, 08:10 UTCMay 17, 10:00 UTC1h 50m
2026-05-17 BAW786 LHR → ARN May 17, 05:40 UTCMay 17, 07:10 UTC1h 30m
2026-05-16 BAW875 BUD → LHR May 16, 18:35 UTCMay 16, 21:25 UTC2h 50m
2026-05-16 BAW874 LHR → BUD May 16, 13:15 UTCMay 16, 16:00 UTC2h 45m
2026-05-16 BAW493U GIB → LHR May 16, 08:55 UTCMay 16, 11:21 UTC2h 25m
2026-05-16 BAW492 LHR → GIB May 16, 05:35 UTCMay 16, 07:55 UTC2h 21m
2026-05-15 BAW19LX LUX → LHR May 15, 19:20 UTCMay 15, 20:20 UTC1h 0m
2026-05-15 BAW18LX LHR → LUX May 15, 17:25 UTCMay 15, 18:15 UTC50m
2026-05-15 BAW865 BUD → LHR May 15, 13:40 UTCMay 15, 15:45 UTC2h 4m

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

Mode-S 4076CD frequently asked

What is Mode-S code 4076CD?
4076CD is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-TTNJ.
Where is Mode-S 4076CD registered?
Mode-S code 4076CD 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 4076CD broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4076CD, octal 20073315, decimal 4,224,717.
What flights does 4076CD operate?
Mode-S 4076CD has broadcast 20 distinct callsigns, including BAW899, BAW898, BAW689, BAW639, BAW638.