Apparatus

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sensors Mode-S transponder

4077D4

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VRNB · AIRBUS A-350-1000

Hex
4077D4
Octal
20073724
Decimal
4,224,980
Country
GB
Tail
G-VRNB
Type
A35K
No current signal · last broadcast Jul 26, 17:50 UTC
Flights observed
176
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 17:50 UTC

Last known position

Most recent position reported by Mode-S 4077D4.

Country allocation

The ICAO 24-bit address 4077D4 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
VIR3N - 16 2026-07-17
VIR104L Virgin Atlantic Airways 16 2026-07-22
VIR7B Virgin Atlantic Airways 15 2026-07-23
VIR103M Virgin Atlantic Airways 15 2026-07-22
VIR4C Virgin Atlantic Airways 14 2026-07-16
VIR8Y Virgin Atlantic Airways 12 2026-07-23
VIR359 Virgin Atlantic Airways 10 2026-05-12
VIR10H Virgin Atlantic Airways 9 2026-07-17
VIR153 Virgin Atlantic Airways 7 2026-07-21
VIR45W Virgin Atlantic Airways 6 2026-05-14
VIR20V Virgin Atlantic Airways 5 2026-07-25
VIR19Z Virgin Atlantic Airways 5 2026-07-24
VIR154 Virgin Atlantic Airways 5 2026-05-29
VIR117F Virgin Atlantic Airways 5 2026-04-20
VIR303 - 4 2026-06-29
VIR302 - 4 2026-06-29
VIR118 Virgin Atlantic Airways 4 2026-04-21
VIR9J Virgin Atlantic Airways 3 2026-07-26
VIR358 Virgin Atlantic Airways 3 2026-04-16
VIR129R Virgin Atlantic Airways 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VIR9J LHR → JFK Jul 26, 10:45 UTCJul 26, 17:45 UTC7h 0m
2026-07-26 VIR58N BOS → LHR Jul 26, 01:45 UTCJul 26, 07:35 UTC5h 51m
2026-07-25 VIR157L LHR → BOS Jul 25, 15:25 UTCJul 25, 22:00 UTC6h 35m
2026-07-25 VIR20V SFO → LHR Jul 25, 01:40 UTCJul 25, 10:50 UTC9h 10m
2026-07-24 VIR19Z LHR → SFO Jul 24, 12:15 UTCJul 24, 22:45 UTC10h 30m
2026-07-23 VIR8Y LAX → LHR Jul 23, 23:05 UTCJul 24, 08:45 UTC9h 40m
2026-07-23 VIR7B LHR → LAX Jul 23, 09:30 UTCJul 23, 20:05 UTC10h 35m
2026-07-22 VIR104L ATL → LHR Jul 22, 22:40 UTCJul 23, 06:05 UTC7h 25m
2026-07-22 VIR103M LHR → ATL Jul 22, 01:10 UTCJul 22, 19:05 UTC17h 55m
2026-07-21 VIR153 LHR → JFK Jul 21, 15:25 UTCJul 21, 22:20 UTC6h 55m
2026-07-21 VIR138M JFK → LHR Jul 21, 04:20 UTCJul 21, 10:35 UTC6h 15m
2026-07-20 VIR137Y LHR → JFK Jul 20, 17:50 UTCJul 21, 00:40 UTC6h 49m
2026-07-19 VIR8Y LAX → LHR Jul 19, 23:10 UTCJul 20, 08:55 UTC9h 45m
2026-07-19 VIR7B LHR → LAX Jul 19, 09:20 UTCJul 19, 19:35 UTC10h 15m
2026-07-18 VIR104L ATL → LHR Jul 18, 22:40 UTCJul 19, 06:15 UTC7h 35m
2026-07-18 VIR103M LHR → ATL Jul 18, 11:05 UTCJul 18, 19:15 UTC8h 10m
2026-07-17 VIR10H JFK → LHR Jul 17, 23:00 UTCJul 18, 05:30 UTC6h 31m
2026-07-17 VIR3N LHR → JFK Jul 17, 07:44 UTCJul 17, 14:24 UTC6h 40m
2026-07-16 VIR4C JFK → LHR Jul 16, 22:45 UTCJul 17, 05:04 UTC6h 20m
2026-07-16 VIR3N - Jul 16, 07:45 UTCJul 16, 14:35 UTC6h 50m
2026-07-15 VIR4C JFK → LHR Jul 15, 23:35 UTCJul 16, 05:40 UTC6h 5m
2026-07-15 VIR3N - Jul 15, 07:40 UTCJul 15, 14:25 UTC6h 45m
2026-07-14 VIR4C JFK → LHR Jul 14, 22:30 UTCJul 15, 05:10 UTC6h 39m
2026-07-14 VIR3N - Jul 14, 10:00 UTCJul 14, 16:30 UTC6h 30m
2026-07-12 VIR4C JFK → LHR Jul 12, 22:45 UTCJul 13, 05:10 UTC6h 25m
2026-07-12 VIR3N - Jul 12, 13:35 UTCJul 12, 15:05 UTC1h 30m
2026-07-12 VIR3N - Jul 12, 08:25 UTCJul 12, 09:40 UTC1h 15m
2026-07-11 VIR4C JFK → LHR Jul 11, 23:55 UTCJul 12, 06:05 UTC6h 10m
2026-07-11 VIR3N LHR → JFK Jul 11, 07:45 UTCJul 11, 14:45 UTC7h 0m
2026-07-10 VIR4C JFK → LHR Jul 10, 23:05 UTCJul 11, 05:15 UTC6h 10m
2026-07-10 VIR3N LHR → JFK Jul 10, 07:50 UTCJul 10, 15:00 UTC7h 10m
2026-07-09 VIR4C JFK → LHR Jul 9, 22:35 UTCJul 10, 05:05 UTC6h 30m
2026-07-09 VIR3N LHR → JFK Jul 9, 07:50 UTCJul 9, 14:45 UTC6h 55m
2026-07-08 VIR4C - Jul 8, 22:40 UTCJul 9, 05:10 UTC6h 30m
2026-07-08 VIR3N - Jul 8, 07:40 UTCJul 8, 14:20 UTC6h 40m
2026-07-07 VIR4C JFK → LHR Jul 7, 22:30 UTCJul 8, 05:05 UTC6h 35m
2026-07-07 VIR9J - Jul 7, 10:50 UTCJul 7, 17:50 UTC7h 0m
2026-07-06 VIR104L ATL → LHR Jul 6, 22:30 UTCJul 7, 06:00 UTC7h 30m
2026-07-06 VIR103M - Jul 6, 11:00 UTCJul 6, 19:20 UTC8h 20m
2026-07-05 VIR10H JFK → LHR Jul 5, 23:15 UTCJul 6, 05:10 UTC5h 55m
2026-07-05 VIR3N - Jul 5, 07:45 UTCJul 5, 14:50 UTC7h 5m
2026-07-04 VIR20V - Jul 4, 01:35 UTCJul 4, 11:15 UTC9h 40m
2026-07-03 VIR19Z - Jul 3, 12:55 UTCJul 3, 23:15 UTC10h 20m
2026-07-03 VIR138M JFK → LHR Jul 3, 04:10 UTCJul 3, 10:15 UTC6h 5m
2026-07-02 VIR137Y LHR → JFK Jul 2, 17:55 UTCJul 3, 01:05 UTC7h 10m
2026-07-02 VIR20V SFO → LHR Jul 2, 01:40 UTCJul 2, 11:05 UTC9h 25m
2026-07-01 VIR19Z - Jul 1, 13:10 UTCJul 1, 23:10 UTC10h 0m
2026-06-30 VIR8Y - Jun 30, 23:00 UTCJul 1, 08:15 UTC9h 15m
2026-06-30 VIR7B - Jun 30, 09:20 UTCJun 30, 19:45 UTC10h 25m
2026-06-29 VIR303 DEL → LHR Jun 29, 20:59 UTCJun 30, 05:35 UTC8h 36m

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

Mode-S 4077D4 frequently asked

What is Mode-S code 4077D4?
4077D4 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VRNB.
Where is Mode-S 4077D4 registered?
Mode-S code 4077D4 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 4077D4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4077D4, octal 20073724, decimal 4,224,980.
What flights does 4077D4 operate?
Mode-S 4077D4 has broadcast 20 distinct callsigns, including VIR3N, VIR104L, VIR7B, VIR103M, VIR4C.