Apparatus

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sensors Mode-S transponder

42450E

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to VQ-BLX

Hex
42450E
Octal
20442416
Decimal
4,343,054
Country
GB
Tail
VQ-BLX
Type
E190
Broadcasting now · callsign BMA302 · 23,300 ft
Flights observed
223
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

Current position

42450E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 42450E 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
BMA301 - 36 2026-07-13
BMA603 - 34 2026-07-12
BMA604 - 33 2026-07-13
BMA302 - 25 2026-07-11
BMA752 - 11 2026-07-04
BMA223 bmi 11 2026-06-16
BMA413 - 9 2026-07-11
BMA224 bmi 9 2026-05-27
BMA751 - 7 2026-07-04
BMA414 bmi 7 2026-07-09
BMA552 bmi 6 2026-06-22
BMA303 - 6 2026-07-05
BMA241 bmi 4 2026-05-21
BMA802 bmi 3 2026-06-12
BMA801 bmi 3 2026-06-12
BMA551 bmi 3 2026-06-22
BMA240 bmi 3 2026-05-21
BMA182 bmi 3 2026-04-13
BMA102 bmi 3 2026-04-22
BMA101 bmi 3 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BMA301 - Jul 13, 19:25 UTCJul 14, 13:00 UTC17h 35m
2026-07-13 BMA604 YYZ → BWI Jul 13, 11:10 UTCJul 13, 17:25 UTC6h 15m
2026-07-12 BMA603 YUL → YYZ Jul 12, 16:01 UTCJul 13, 00:45 UTC8h 45m
2026-07-11 BMA413 MCO → YUL Jul 11, 23:00 UTCJul 12, 14:25 UTC15h 25m
2026-07-11 BMA302 BOS → MCO Jul 11, 15:15 UTCJul 11, 21:10 UTC5h 55m
2026-07-11 BMA301 - Jul 11, 12:35 UTCJul 11, 13:15 UTC40m
2026-07-10 BMA301 - Jul 10, 15:35 UTCJul 11, 13:15 UTC21h 41m
2026-07-10 BMA302 BOS → BOS Jul 10, 15:15 UTCJul 11, 13:15 UTC22h 1m
2026-07-09 BMA414 YUL → BDA Jul 9, 19:30 UTCJul 10, 13:30 UTC18h 0m
2026-07-09 BMA604 YYZ → YUL Jul 9, 11:05 UTCJul 9, 17:50 UTC6h 45m
2026-07-08 BMA603 BOS → YYZ Jul 8, 14:55 UTCJul 9, 00:50 UTC9h 55m
2026-07-07 BMA301 - Jul 7, 19:45 UTCJul 8, 13:30 UTC17h 45m
2026-07-07 BMA604 YYZ → MCO Jul 7, 11:25 UTCJul 7, 17:55 UTC6h 30m
2026-07-06 BMA603 - Jul 6, 14:55 UTCJul 7, 00:45 UTC9h 50m
2026-07-05 BMA301 BOS → BOS Jul 5, 22:35 UTCJul 6, 13:45 UTC15h 10m
2026-07-05 BMA303 - Jul 5, 20:00 UTCJul 5, 20:55 UTC55m
2026-07-04 BMA752 - Jul 4, 19:25 UTCJul 4, 20:05 UTC40m
2026-07-04 BMA751 - Jul 4, 17:15 UTCJul 4, 18:00 UTC45m
2026-07-04 BMA604 - Jul 4, 11:50 UTCJul 4, 13:10 UTC1h 20m
2026-07-03 BMA603 BOS → YYZ Jul 3, 16:00 UTCJul 4, 00:55 UTC8h 55m
2026-07-02 BMA301 - Jul 2, 19:35 UTCJul 3, 13:40 UTC18h 5m
2026-07-02 BMA414 YUL → BDA Jul 2, 19:10 UTCJul 3, 13:40 UTC18h 30m
2026-07-02 BMA604 YYZ → YUL Jul 2, 11:20 UTCJul 2, 17:45 UTC6h 25m
2026-07-01 BMA603 BOS → YYZ Jul 1, 18:40 UTCJul 2, 00:40 UTC6h 0m
2026-07-01 BMA604 YYZ → BOS Jul 1, 11:25 UTCJul 1, 17:30 UTC6h 5m
2026-06-30 BMA603 YYZ → YYZ Jun 30, 11:30 UTCJul 1, 00:35 UTC13h 5m
2026-06-29 BMA603 BOS → YYZ Jun 29, 15:09 UTCJun 30, 00:49 UTC9h 40m
2026-06-28 BMA301 - Jun 28, 23:04 UTCJun 29, 13:44 UTC14h 40m
2026-06-28 BMA303 BDA → BOS Jun 28, 15:20 UTCJun 28, 21:10 UTC5h 50m
2026-06-28 BMA413 - Jun 28, 12:29 UTCJun 28, 13:40 UTC1h 10m
2026-06-27 BMA752 - Jun 27, 19:34 UTCJun 27, 20:14 UTC40m
2026-06-27 BMA751 - Jun 27, 16:59 UTCJun 27, 17:39 UTC40m
2026-06-27 BMA604 - Jun 27, 11:14 UTCJun 27, 12:25 UTC1h 10m
2026-06-26 BMA302 BOS → YYZ Jun 26, 16:20 UTCJun 27, 00:50 UTC8h 30m
2026-06-25 BMA301 - Jun 25, 22:29 UTCJun 26, 14:05 UTC15h 35m
2026-06-25 BMA302 - Jun 25, 14:55 UTCJun 25, 21:10 UTC6h 15m
2026-06-25 BMA301 - Jun 25, 12:50 UTCJun 25, 13:35 UTC45m
2026-06-23 BMA752 MCO → BDA Jun 23, 19:44 UTCJun 23, 20:15 UTC30m
2026-06-23 BMA751 BDA → MCO Jun 23, 17:20 UTCJun 23, 17:59 UTC40m
2026-06-22 BMA552 BWI → BDA Jun 22, 19:05 UTCJun 22, 19:34 UTC30m
2026-06-22 BMA551 BDA → BWI Jun 22, 16:45 UTCJun 22, 17:29 UTC45m
2026-06-20 BMA752 MCO → BDA Jun 20, 22:54 UTCJun 20, 23:29 UTC35m
2026-06-20 BMA302 BOS → MCO Jun 20, 14:50 UTCJun 20, 21:19 UTC6h 30m
2026-06-19 BMA301 - Jun 19, 21:30 UTCJun 20, 13:19 UTC15h 50m
2026-06-16 BMA223 BDA → HPN Jun 16, 22:10 UTCJun 16, 22:40 UTC30m
2026-06-15 BMA552 BWI → BDA Jun 15, 22:45 UTCJun 15, 23:15 UTC30m
2026-06-15 BMA604 YYZ → BWI Jun 15, 11:39 UTCJun 15, 17:45 UTC6h 5m
2026-06-14 BMA603 BDA → YYZ Jun 14, 23:20 UTCJun 15, 00:45 UTC1h 25m
2026-06-14 BMA414 YUL → BDA Jun 14, 15:50 UTCJun 14, 16:50 UTC1h 0m
2026-06-14 BMA413 BDA → YUL Jun 14, 12:50 UTCJun 14, 14:10 UTC1h 20m

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

Mode-S 42450E frequently asked

What is Mode-S code 42450E?
42450E is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to VQ-BLX.
Where is Mode-S 42450E registered?
Mode-S code 42450E 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 42450E broadcasting right now?
Yes. Mode-S 42450E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 42450E, octal 20442416, decimal 4,343,054.
What flights does 42450E operate?
Mode-S 42450E has broadcast 20 distinct callsigns, including BMA301, BMA603, BMA604, BMA302, BMA752.