Apparatus

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sensors Mode-S transponder

4246B3

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to VP-BAU · BOEING 777-200LR

Hex
4246B3
Octal
20443263
Decimal
4,343,475
Country
GB
Tail
VP-BAU
Type
B77L
No current signal · last broadcast Jul 26, 18:10 UTC
Flights observed
252
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 18:10 UTC

Last known position

Most recent position reported by Mode-S 4246B3.

Country allocation

The ICAO 24-bit address 4246B3 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
AZG1581 Sakaviaservice 12 2026-07-23
AZG6117 - 9 2026-07-13
AZG9790 Sakaviaservice 6 2026-07-21
AZG4881 - 6 2026-06-15
AZG4862 Sakaviaservice 6 2026-07-25
AZG3319 Sakaviaservice 6 2026-07-17
AZG9934 Sakaviaservice 5 2026-05-27
AZG9933 Sakaviaservice 5 2026-06-04
AZG8892 - 5 2026-05-15
AZG8587 Sakaviaservice 5 2026-07-24
AZG784 - 5 2026-06-25
AZG902 Sakaviaservice 4 2026-07-18
AZG783 Sakaviaservice 4 2026-04-19
AZG624 - 4 2026-06-21
AZG6118 Sakaviaservice 4 2026-05-28
AZG281 - 4 2026-07-09
AZG238 Sakaviaservice 4 2026-06-05
AZG237 Sakaviaservice 4 2026-06-05
AZG1401 - 4 2026-07-09
AZG134 - 4 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AZG247 HKG → HKG Jul 26, 12:40 UTCJul 26, 18:10 UTC5h 30m
2026-07-26 AZG247 HKG → HKG Jul 26, 10:30 UTCJul 26, 10:40 UTC10m
2026-07-26 AZG246 KGF → HKG Jul 26, 06:25 UTCJul 26, 06:35 UTC11m
2026-07-25 AZG246 KGF → HKG Jul 25, 22:20 UTCJul 26, 04:15 UTC5h 55m
2026-07-25 AZG4862 ORD → GYD Jul 25, 07:40 UTCJul 25, 11:35 UTC3h 55m
2026-07-24 AZG4862 ORD → GYD Jul 24, 21:05 UTCJul 25, 05:45 UTC8h 40m
2026-07-24 AZG8587 GYD → ATL Jul 24, 08:35 UTCJul 24, 17:15 UTC8h 40m
2026-07-23 AZG8587 GYD → ATL Jul 23, 15:50 UTCJul 24, 07:05 UTC15h 15m
2026-07-23 AZG1581 ALA → BKK Jul 23, 00:25 UTCJul 23, 12:55 UTC12h 30m
2026-07-22 AZG1581 ALA → BKK Jul 22, 11:10 UTCJul 23, 10:45 UTC23h 35m
2026-07-22 AZG1581 ALA → BKK Jul 22, 10:20 UTCJul 23, 08:45 UTC22h 25m
2026-07-21 AZG9790 ORD → IAH Jul 21, 16:55 UTCJul 22, 05:25 UTC12h 30m
2026-07-21 AZG9790 ORD → IAH Jul 21, 05:10 UTCJul 21, 14:25 UTC9h 15m
2026-07-20 AZG5953 POS → CMN Jul 20, 16:55 UTCJul 21, 01:35 UTC8h 40m
2026-07-19 AZG5953 POS → CMN Jul 19, 22:20 UTCJul 20, 15:05 UTC16h 45m
2026-07-19 AZG1581 ALA → BKK Jul 19, 04:35 UTCJul 19, 19:35 UTC15h 0m
2026-07-18 AZG5517 HHN → ATL Jul 18, 16:15 UTCJul 19, 13:15 UTC21h 0m
2026-07-18 AZG902 NRT → GYD Jul 18, 10:50 UTCJul 19, 05:10 UTC18h 20m
2026-07-18 AZG902 NRT → GYD Jul 18, 09:20 UTCJul 19, 05:10 UTC19h 50m
2026-07-17 AZG901 - Jul 17, 15:25 UTCJul 18, 06:10 UTC14h 46m
2026-07-17 AZG3319 GYD → BOM Jul 17, 09:45 UTCJul 17, 09:55 UTC10m
2026-07-16 AZG9801 - Jul 16, 21:35 UTCJul 17, 02:54 UTC5h 20m
2026-07-16 AZG285 - Jul 16, 14:35 UTCJul 16, 17:30 UTC2h 55m
2026-07-15 AZG8586 - Jul 15, 21:50 UTCJul 16, 11:40 UTC13h 50m
2026-07-15 AZG8585 - Jul 15, 12:45 UTCJul 15, 19:05 UTC6h 20m
2026-07-15 AZG2711 - Jul 15, 00:25 UTCJul 15, 07:05 UTC6h 40m
2026-07-14 AZG3231 - Jul 14, 16:20 UTCJul 14, 20:45 UTC4h 25m
2026-07-14 AZG278 - Jul 14, 07:05 UTCJul 14, 10:30 UTC3h 25m
2026-07-14 AZG277 - Jul 14, 03:35 UTCJul 14, 04:55 UTC1h 20m
2026-07-13 AZG6117 - Jul 13, 06:50 UTCJul 14, 01:15 UTC18h 25m
2026-07-13 AZG6117 - Jul 13, 04:50 UTCJul 14, 01:15 UTC20h 25m
2026-07-13 AZG6117 - Jul 13, 02:50 UTCJul 14, 01:15 UTC22h 25m
2026-07-13 AZG6117 - Jul 13, 00:50 UTCJul 14, 00:45 UTC23h 55m
2026-07-13 AZG2891 - Jul 13, 00:35 UTCJul 13, 22:45 UTC22h 10m
2026-07-12 AZG1332 - Jul 12, 14:15 UTCJul 12, 21:30 UTC7h 15m
2026-07-12 AZG217 - Jul 12, 08:50 UTCJul 12, 10:50 UTC2h 0m
2026-07-12 AZG216 - Jul 12, 03:10 UTCJul 12, 05:35 UTC2h 25m
2026-07-11 AZG4862 - Jul 11, 10:50 UTCJul 11, 14:25 UTC3h 35m
2026-07-10 AZG4862 - Jul 10, 22:25 UTCJul 11, 06:50 UTC8h 25m
2026-07-10 AZG8587 - Jul 10, 08:50 UTCJul 10, 18:00 UTC9h 10m
2026-07-10 AZG8587 - Jul 10, 01:30 UTCJul 10, 06:05 UTC4h 35m
2026-07-09 AZG1402 - Jul 9, 19:15 UTCJul 9, 21:00 UTC1h 45m
2026-07-09 AZG1401 - Jul 9, 16:35 UTCJul 9, 17:05 UTC30m
2026-07-09 AZG1401 - Jul 9, 14:50 UTCJul 9, 16:05 UTC1h 15m
2026-07-09 AZG281 - Jul 9, 07:50 UTCJul 9, 10:40 UTC2h 50m
2026-07-08 AZG324 GYD → RUH Jul 8, 14:50 UTCJul 9, 04:15 UTC13h 25m
2026-07-08 AZG323 GYD → STN Jul 8, 07:10 UTCJul 8, 12:20 UTC5h 10m
2026-07-07 AZG3232 - Jul 7, 22:40 UTCJul 8, 02:15 UTC3h 35m
2026-07-07 AZG3231 - Jul 7, 05:55 UTCJul 7, 20:00 UTC14h 5m
2026-07-07 AZG692 - Jul 7, 03:40 UTCJul 7, 03:55 UTC15m

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 VP-BAU page for operator, model, and routing details .

Mode-S 4246B3 frequently asked

What is Mode-S code 4246B3?
4246B3 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to VP-BAU.
Where is Mode-S 4246B3 registered?
Mode-S code 4246B3 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 4246B3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4246B3, octal 20443263, decimal 4,343,475.
What flights does 4246B3 operate?
Mode-S 4246B3 has broadcast 20 distinct callsigns, including AZG1581, AZG6117, AZG9790, AZG4881, AZG4862.