sensors Mode-S transponder

407F7B

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-JZDA · BOEING 737-800

Hex
407F7B
Octal
20077573
Decimal
4,226,939
Country
GB
Tail
G-JZDA
Type
B738
No current signal · last broadcast 20h ago
Flights observed
15
Distinct callsigns
7
Country
GB
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 407F7B.

Country allocation

The ICAO 24-bit address 407F7B 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 7 distinct

Callsign Airline Flights Last seen
EXS67DY - 3 2026-04-13
EXS23CD - 3 2026-04-14
EXS1KS - 3 2026-04-13
EXS1JV Jet2.com 3 2026-04-13
EXS56KL - 1 2026-04-14
EXS3FR - 1 2026-04-13
EXS34EF - 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 EXS56KL - Apr 14, 10:30 UTCApr 14, 11:05 UTC35m
2026-04-14 EXS23CD - Apr 14, 09:10 UTCApr 14, 09:25 UTC15m
2026-04-14 EXS23CD - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 EXS23CD - Apr 14, 06:45 UTCApr 14, 07:10 UTC25m
2026-04-13 EXS3FR - Apr 13, 20:10 UTCApr 13, 23:40 UTC3h 30m
2026-04-13 EXS67DY - Apr 13, 16:15 UTCApr 13, 18:50 UTC2h 35m
2026-04-13 EXS67DY - Apr 13, 15:50 UTCApr 13, 18:50 UTC3h 0m
2026-04-13 EXS67DY - Apr 13, 14:35 UTCApr 13, 16:15 UTC1h 40m
2026-04-13 EXS1KS - Apr 13, 12:20 UTCApr 13, 13:20 UTC1h 0m
2026-04-13 EXS1KS - Apr 13, 11:55 UTCApr 13, 13:20 UTC1h 25m
2026-04-13 EXS1KS - Apr 13, 10:35 UTCApr 13, 12:15 UTC1h 40m
2026-04-13 EXS1JV BFS → LPA Apr 13, 08:20 UTCApr 13, 09:00 UTC40m
2026-04-13 EXS1JV BFS → LPA Apr 13, 07:55 UTCApr 13, 09:00 UTC1h 5m
2026-04-13 EXS1JV BFS → LPA Apr 13, 06:30 UTCApr 13, 08:15 UTC1h 45m
2026-04-12 EXS34EF - Apr 12, 17:15 UTCApr 12, 17:50 UTC35m

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

Mode-S 407F7B frequently asked

What is Mode-S code 407F7B?
407F7B is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-JZDA.
Where is Mode-S 407F7B registered?
Mode-S code 407F7B 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 407F7B broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407F7B, octal 20077573, decimal 4,226,939.
What flights does 407F7B operate?
Mode-S 407F7B has broadcast 7 distinct callsigns, including EXS67DY, EXS23CD, EXS1KS, EXS1JV, EXS56KL.