Apparatus

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sensors Mode-S transponder

424508

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to VQ-BLW · EMBRAER ERJ-170-100

Hex
424508
Octal
20442410
Decimal
4,343,048
Country
GB
Tail
VQ-BLW
Type
E170
No current signal · last broadcast 1h ago
Flights observed
148
Distinct callsigns
17
Country
GB
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 424508.

Country allocation

The ICAO 24-bit address 424508 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 17 distinct

Callsign Airline Flights Last seen
BMA240 - 17 2026-07-13
BMA413 - 16 2026-07-16
BMA414 bmi 15 2026-07-16
BMA241 - 15 2026-07-13
BMA801 bmi 13 2026-06-17
BMA223 - 10 2026-07-14
BMA802 bmi 9 2026-07-01
BMA301 bmi 8 2026-05-19
BMA224 - 8 2026-07-14
BMA551 - 7 2026-07-08
BMA302 bmi 7 2026-05-19
BMA751 bmi 6 2026-06-06
BMA603 - 6 2026-07-17
BMA552 bmi 4 2026-05-18
BMA752 bmi 3 2026-06-06
BMA604 - 3 2026-07-11
BMA901P - 1 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 BMA603 EWR → YYZ Jul 17, 15:00 UTCJul 18, 01:00 UTC10h 0m
2026-07-16 BMA414 YUL → BDA Jul 16, 19:45 UTCJul 17, 13:25 UTC17h 40m
2026-07-16 BMA413 - Jul 16, 16:30 UTCJul 16, 17:49 UTC1h 20m
2026-07-15 BMA413 - Jul 15, 18:35 UTCJul 16, 17:49 UTC23h 15m
2026-07-14 BMA224 - Jul 14, 22:05 UTCJul 15, 17:00 UTC18h 54m
2026-07-14 BMA223 - Jul 14, 20:00 UTCJul 14, 20:50 UTC50m
2026-07-13 BMA241 - Jul 13, 15:05 UTCJul 13, 15:45 UTC40m
2026-07-13 BMA240 - Jul 13, 12:25 UTCJul 13, 13:25 UTC1h 0m
2026-07-11 BMA604 - Jul 11, 11:15 UTCJul 11, 12:30 UTC1h 15m
2026-07-10 BMA603 - Jul 10, 15:15 UTCJul 11, 00:35 UTC9h 21m
2026-07-09 BMA240 - Jul 9, 22:40 UTCJul 10, 13:35 UTC14h 55m
2026-07-09 BMA223 - Jul 9, 15:05 UTCJul 9, 21:00 UTC5h 55m
2026-07-08 BMA551 - Jul 8, 19:20 UTCJul 9, 13:55 UTC18h 35m
2026-07-08 BMA604 - Jul 8, 11:25 UTCJul 8, 17:25 UTC6h 0m
2026-07-07 BMA603 - Jul 7, 22:55 UTCJul 8, 00:30 UTC1h 35m
2026-07-06 BMA241 - Jul 6, 17:40 UTCJul 6, 18:25 UTC45m
2026-07-06 BMA240 - Jul 6, 12:15 UTCJul 6, 13:05 UTC50m
2026-07-04 BMA241 - Jul 4, 18:05 UTCJul 4, 18:45 UTC40m
2026-07-04 BMA240 - Jul 4, 15:30 UTCJul 4, 16:45 UTC1h 15m
2026-07-03 BMA241 EWR → BDA Jul 3, 15:15 UTCJul 3, 16:00 UTC45m
2026-07-03 BMA240 - Jul 3, 12:30 UTCJul 3, 13:25 UTC55m
2026-07-01 BMA802 YHZ → BDA Jul 1, 18:25 UTCJul 1, 18:45 UTC20m
2026-06-30 BMA224 - Jun 30, 22:25 UTCJul 1, 17:15 UTC18h 50m
2026-06-30 BMA223 - Jun 30, 20:20 UTCJun 30, 21:05 UTC45m
2026-06-29 BMA241 EWR → BDA Jun 29, 15:24 UTCJun 29, 15:54 UTC30m
2026-06-28 BMA240 - Jun 28, 22:29 UTCJun 29, 13:19 UTC14h 50m
2026-06-28 BMA223 - Jun 28, 20:34 UTCJun 28, 21:20 UTC45m
2026-06-27 BMA241 EWR → BDA Jun 27, 16:24 UTCJun 27, 17:04 UTC40m
2026-06-27 BMA240 BDA → EWR Jun 27, 13:40 UTCJun 27, 14:20 UTC40m
2026-06-26 BMA240 BDA → EWR Jun 26, 16:05 UTCJun 27, 14:20 UTC22h 15m
2026-06-26 BMA241 EWR → BDA Jun 26, 14:59 UTCJun 27, 14:00 UTC23h 0m
2026-06-25 BMA414 YUL → BDA Jun 25, 19:15 UTCJun 26, 13:45 UTC18h 30m
2026-06-25 BMA413 BDA → YUL Jun 25, 16:35 UTCJun 25, 17:49 UTC1h 15m
2026-06-24 BMA413 BDA → YUL Jun 24, 18:05 UTCJun 25, 17:49 UTC23h 45m
2026-06-24 BMA901P - Jun 24, 17:55 UTCJun 24, 19:00 UTC1h 5m
2026-06-22 BMA603 YYZ → YYZ Jun 22, 11:14 UTCJun 23, 00:45 UTC13h 30m
2026-06-21 BMA603 YUL → YYZ Jun 21, 15:19 UTCJun 22, 00:50 UTC9h 30m
2026-06-21 BMA413 BDA → YUL Jun 21, 12:40 UTCJun 21, 13:54 UTC1h 15m
2026-06-19 BMA241 EWR → BDA Jun 19, 15:09 UTCJun 19, 15:39 UTC30m
2026-06-19 BMA240 BDA → EWR Jun 19, 12:34 UTCJun 19, 13:24 UTC50m
2026-06-19 BMA240 BDA → EWR Jun 19, 11:14 UTCJun 19, 11:20 UTC5m
2026-06-18 BMA414 YUL → BDA Jun 18, 20:05 UTCJun 18, 21:05 UTC1h 0m
2026-06-18 BMA413 BDA → YUL Jun 18, 17:25 UTCJun 18, 18:45 UTC1h 20m
2026-06-18 BMA604 - Jun 18, 12:40 UTCJun 18, 13:45 UTC1h 5m
2026-06-17 BMA603 BDA → YYZ Jun 17, 18:55 UTCJun 18, 01:00 UTC6h 5m
2026-06-17 BMA801 BDA → YHZ Jun 17, 17:15 UTCJun 17, 17:55 UTC40m
2026-06-14 BMA224 HPN → BDA Jun 14, 22:40 UTCJun 14, 23:20 UTC40m
2026-06-14 BMA223 BDA → HPN Jun 14, 20:30 UTCJun 14, 21:10 UTC40m
2026-06-12 BMA241 EWR → BDA Jun 12, 15:05 UTCJun 12, 15:40 UTC35m
2026-06-11 BMA240 BDA → EWR Jun 11, 22:35 UTCJun 12, 13:55 UTC15h 21m

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 VQ-BLW page for operator, model, and routing details .

Mode-S 424508 frequently asked

What is Mode-S code 424508?
424508 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to VQ-BLW.
Where is Mode-S 424508 registered?
Mode-S code 424508 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 424508 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 424508, octal 20442410, decimal 4,343,048.
What flights does 424508 operate?
Mode-S 424508 has broadcast 17 distinct callsigns, including BMA240, BMA413, BMA414, BMA241, BMA801.