Apparatus

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sensors Mode-S transponder

406B91

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EZWY · AIRBUS A-320

Hex
406B91
Octal
20065621
Decimal
4,221,841
Country
GB
Tail
G-EZWY
Type
A320
Broadcasting now · callsign EZY75ZU · 38,025 ft
Flights observed
618
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 21:40 UTC

Current position

406B91 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 406B91 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
EZY83YQ easyJet 9 2026-07-26
EZY808X easyJet 9 2026-07-26
EZY38WB easyJet 7 2026-07-21
EZY25RW easyJet 7 2026-05-22
EZY12UV easyJet 7 2026-07-21
EZY35MG easyJet 6 2026-05-22
EZY87VU easyJet 5 2026-07-25
EZY832W easyJet 5 2026-07-23
EZY67PB - 5 2026-07-17
EZY57LR easyJet 5 2026-07-23
EZY54GE easyJet 5 2026-06-12
EZY48CH - 5 2026-07-17
EZY408H - 5 2026-07-17
EZY39DE - 5 2026-07-17
EZY3036 easyJet 5 2026-07-25
EZY756N easyJet 4 2026-05-23
EZY73PM easyJet 4 2026-06-12
EZY73EH easyJet 4 2026-05-23
EZY47UP - 4 2026-07-20
EZY286A - 4 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZY45ND FAO → BFS Jul 26, 19:05 UTCJul 26, 21:40 UTC2h 35m
2026-07-26 EZY13TF BFS → FAO Jul 26, 15:35 UTCJul 26, 18:15 UTC2h 40m
2026-07-26 EZY83YQ PMI → BFS Jul 26, 11:45 UTCJul 26, 14:25 UTC2h 40m
2026-07-26 EZY808X BFS → PMI Jul 26, 06:30 UTCJul 26, 08:55 UTC2h 26m
2026-07-25 EZY3036 NCE → BFS Jul 25, 19:40 UTCJul 25, 22:00 UTC2h 20m
2026-07-25 EZY87VU BFS → NCE Jul 25, 16:25 UTCJul 25, 18:35 UTC2h 10m
2026-07-25 EZY507H LPL → BFS Jul 25, 14:00 UTCJul 25, 14:35 UTC35m
2026-07-25 EZY89VK BFS → LPL Jul 25, 12:40 UTCJul 25, 13:15 UTC35m
2026-07-25 EZY68UA DLM → LGW Jul 25, 09:30 UTCJul 25, 11:50 UTC2h 20m
2026-07-25 EZY26ZK BFS → REU Jul 25, 06:10 UTCJul 25, 08:20 UTC2h 10m
2026-07-24 EZY93AW - Jul 24, 20:00 UTCJul 24, 22:40 UTC2h 40m
2026-07-24 EZY734A LTN → BFS Jul 24, 15:40 UTCJul 24, 18:50 UTC3h 10m
2026-07-24 EZY473T GLA → BFS Jul 24, 14:15 UTCJul 24, 14:45 UTC30m
2026-07-24 EZY524C - Jul 24, 13:00 UTCJul 24, 13:30 UTC30m
2026-07-24 EZY83YQ PMI → BFS Jul 24, 08:50 UTCJul 24, 11:20 UTC2h 30m
2026-07-24 EZY808X BFS → PMI Jul 24, 04:35 UTCJul 24, 07:05 UTC2h 30m
2026-07-23 EZY648E NCL → BFS Jul 23, 22:40 UTCJul 23, 23:15 UTC35m
2026-07-23 EZY72EJ - Jul 23, 21:25 UTCJul 23, 22:00 UTC35m
2026-07-23 EZY58YJ AMS → BFS Jul 23, 19:25 UTCJul 23, 20:35 UTC1h 10m
2026-07-23 EZY24RT SKG → LGW Jul 23, 17:00 UTCJul 23, 18:10 UTC1h 10m
2026-07-23 EZY3036 NCE → BFS Jul 23, 13:25 UTCJul 23, 15:55 UTC2h 30m
2026-07-23 EZY87VU - Jul 23, 09:05 UTCJul 23, 11:15 UTC2h 10m
2026-07-23 EZY832W NCL → BFS Jul 23, 07:35 UTCJul 23, 08:00 UTC25m
2026-07-23 EZY57LR OPO → LTN Jul 23, 06:05 UTCJul 23, 06:45 UTC40m
2026-07-22 EZY26ZX BCN → BFS Jul 22, 20:25 UTCJul 22, 22:45 UTC2h 20m
2026-07-22 EZY63GN BFS → BCN Jul 22, 16:50 UTCJul 22, 19:00 UTC2h 10m
2026-07-22 EZY18HW - Jul 22, 11:45 UTCJul 22, 15:25 UTC3h 40m
2026-07-21 EZY345Y STN → BFS Jul 21, 22:00 UTCJul 21, 22:55 UTC55m
2026-07-21 EZY86VQ - Jul 21, 20:15 UTCJul 21, 21:05 UTC50m
2026-07-21 EZY3036 NCE → BFS Jul 21, 16:55 UTCJul 21, 19:15 UTC2h 20m
2026-07-21 EZY87VU - Jul 21, 12:55 UTCJul 21, 15:05 UTC2h 10m
2026-07-21 EZY38WB FAO → BFS Jul 21, 08:50 UTCJul 21, 11:30 UTC2h 40m
2026-07-21 EZY12UV BFS → FAO Jul 21, 05:15 UTCJul 21, 07:55 UTC2h 40m
2026-07-20 EZY3027 BFS → FUE Jul 20, 13:55 UTCJul 20, 22:50 UTC8h 55m
2026-07-20 EZY786R SOU → BFS Jul 20, 11:45 UTCJul 20, 12:40 UTC55m
2026-07-20 EZY23RV - Jul 20, 09:45 UTCJul 20, 10:45 UTC1h 0m
2026-07-20 EZY286A - Jul 20, 08:05 UTCJul 20, 08:55 UTC50m
2026-07-20 EZY47UP - Jul 20, 06:20 UTCJul 20, 07:15 UTC55m
2026-07-18 EZY3036 NCE → BFS Jul 18, 19:05 UTCJul 18, 21:25 UTC2h 20m
2026-07-18 EZY87VU - Jul 18, 15:40 UTCJul 18, 17:50 UTC2h 10m
2026-07-18 EZY507H LPL → BFS Jul 18, 14:15 UTCJul 18, 14:50 UTC35m
2026-07-18 EZY89VK BFS → LPL Jul 18, 12:45 UTCJul 18, 13:20 UTC35m
2026-07-18 EZY68UA - Jul 18, 09:35 UTCJul 18, 11:50 UTC2h 15m
2026-07-18 EZY26ZK BFS → REU Jul 18, 06:20 UTCJul 18, 08:25 UTC2h 5m
2026-07-17 EZY38WB FAO → BFS Jul 17, 19:35 UTCJul 17, 22:15 UTC2h 40m
2026-07-17 EZY12UV BFS → FAO Jul 17, 15:35 UTCJul 17, 18:15 UTC2h 40m
2026-07-17 EZY408H - Jul 17, 13:50 UTCJul 17, 14:24 UTC35m
2026-07-17 EZY67PB - Jul 17, 12:35 UTCJul 17, 13:05 UTC30m
2026-07-17 EZY48CH FAO → BFS Jul 17, 08:40 UTCJul 17, 11:25 UTC2h 45m
2026-07-17 EZY39DE - Jul 17, 04:44 UTCJul 17, 07:30 UTC2h 45m

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

Mode-S 406B91 frequently asked

What is Mode-S code 406B91?
406B91 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EZWY.
Where is Mode-S 406B91 registered?
Mode-S code 406B91 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 406B91 broadcasting right now?
Yes. Mode-S 406B91 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406B91, octal 20065621, decimal 4,221,841.
What flights does 406B91 operate?
Mode-S 406B91 has broadcast 20 distinct callsigns, including EZY83YQ, EZY808X, EZY38WB, EZY25RW, EZY12UV.