Apparatus

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sensors Mode-S transponder

405B66

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EZDM · AIRBUS A-319

Hex
405B66
Octal
20055546
Decimal
4,217,702
Country
GB
Tail
G-EZDM
Type
A319
Broadcasting now · callsign EZY58KW · 33,000 ft
Flights observed
593
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 21:30 UTC

Current position

405B66 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 405B66 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
EZY9 - 10 2026-06-23
EZY86KV - 5 2026-06-24
EZY59NU - 5 2026-07-01
EZY42UA - 5 2026-07-11
EZY36DH - 5 2026-07-01
EZY95AM easyJet 4 2026-07-22
EZY93HL easyJet 4 2026-07-24
EZY91EV - 4 2026-06-27
EZY91AM - 4 2026-07-07
EZY87KZ easyJet 4 2026-06-14
EZY82WL easyJet 4 2026-07-26
EZY78DG - 4 2026-07-09
EZY673F easyJet 4 2026-07-24
EZY65HY - 4 2026-06-24
EZY64XR - 4 2026-06-27
EZY58HW easyJet 4 2026-07-26
EZY57AF easyJet 4 2026-07-24
EZY46HL - 4 2026-07-08
EZY43KY easyJet 4 2026-07-24
EZY41PQ easyJet 4 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZY12YX LGW → MRS Jul 26, 20:25 UTCJul 26, 21:30 UTC1h 5m
2026-07-26 EZY82WL NCE → LGW Jul 26, 17:20 UTCJul 26, 19:15 UTC1h 55m
2026-07-26 EZY58HW LGW → NCE Jul 26, 13:50 UTCJul 26, 15:25 UTC1h 35m
2026-07-26 EZY15YN SVQ → LGW Jul 26, 08:55 UTCJul 26, 11:15 UTC2h 20m
2026-07-26 EZY29QE LGW → SVQ Jul 26, 05:35 UTCJul 26, 07:45 UTC2h 11m
2026-07-25 EZY97QP LIS → LGW Jul 25, 21:00 UTCJul 25, 23:20 UTC2h 20m
2026-07-25 EZY26YM LGW → LIS Jul 25, 17:25 UTCJul 25, 19:30 UTC2h 5m
2026-07-25 EZY49TF LPL → CDG Jul 25, 14:35 UTCJul 25, 16:00 UTC1h 25m
2026-07-25 EZY825U LGW → INV Jul 25, 12:10 UTCJul 25, 13:25 UTC1h 15m
2026-07-25 EZY83ZL BSL → LGW Jul 25, 09:35 UTCJul 25, 10:45 UTC1h 10m
2026-07-25 EZY941T LGW → BSL Jul 25, 07:25 UTCJul 25, 08:35 UTC1h 10m
2026-07-24 EZY93HL CDG → LGW Jul 24, 19:05 UTCJul 24, 19:40 UTC35m
2026-07-24 EZY57AF LGW → CDG Jul 24, 17:00 UTCJul 24, 17:45 UTC45m
2026-07-24 EZY13MG GLA → LGW Jul 24, 14:45 UTCJul 24, 16:00 UTC1h 15m
2026-07-24 EZY673F LTN → BFS Jul 24, 12:40 UTCJul 24, 13:45 UTC1h 5m
2026-07-24 EZY43KY AGP → LGW Jul 24, 08:45 UTCJul 24, 10:55 UTC2h 10m
2026-07-24 EZY36PZ LJU → LGW Jul 24, 04:55 UTCJul 24, 07:25 UTC2h 30m
2026-07-23 EZY58DK LPA → LGW Jul 23, 18:15 UTCJul 23, 21:45 UTC3h 30m
2026-07-23 EZY91TK LGW → ATH Jul 23, 13:50 UTCJul 23, 16:45 UTC2h 55m
2026-07-23 EZY16RQ - Jul 23, 10:20 UTCJul 23, 12:45 UTC2h 25m
2026-07-23 EZY25WB LPL → AGP Jul 23, 05:15 UTCJul 23, 07:55 UTC2h 40m
2026-07-22 EZY48EA ALC → LPL Jul 22, 21:20 UTCJul 22, 23:50 UTC2h 30m
2026-07-22 EZY51KG LPL → ALC Jul 22, 17:55 UTCJul 22, 20:15 UTC2h 20m
2026-07-22 EZY72TM BFS → LPL Jul 22, 16:30 UTCJul 22, 17:00 UTC30m
2026-07-22 EZY282J LPL → BFS Jul 22, 15:00 UTCJul 22, 15:35 UTC35m
2026-07-22 EZY95AM JER → LPL Jul 22, 12:25 UTCJul 22, 13:20 UTC55m
2026-07-22 EZY19DV - Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-21 EZY536 JER → LPL Jul 21, 14:10 UTCJul 21, 15:05 UTC55m
2026-07-21 EZY34WA ALC → SEN Jul 21, 12:40 UTCJul 21, 13:25 UTC45m
2026-07-21 EZY23WU LPL → JER Jul 21, 09:05 UTCJul 21, 11:40 UTC2h 35m
2026-07-21 EZY25WB LPL → AGP Jul 21, 05:10 UTCJul 21, 07:45 UTC2h 35m
2026-07-20 EZY97JB SPU → LPL Jul 20, 23:25 UTCJul 20, 23:35 UTC10m
2026-07-20 EZY97JB SPU → LPL Jul 20, 19:40 UTCJul 20, 22:15 UTC2h 35m
2026-07-20 EZY3431 LPL → SPU Jul 20, 16:25 UTCJul 20, 18:30 UTC2h 5m
2026-07-20 EZY95AM JER → LPL Jul 20, 13:50 UTCJul 20, 14:45 UTC55m
2026-07-20 EZY19DV LPL → JER Jul 20, 12:20 UTCJul 20, 13:10 UTC50m
2026-07-20 EZY36NW BCN → LPL Jul 20, 08:55 UTCJul 20, 11:00 UTC2h 5m
2026-07-20 EZY23KM LPL → BCN Jul 20, 05:45 UTCJul 20, 07:40 UTC1h 55m
2026-07-19 EZY24LM BFS → LPL Jul 19, 21:00 UTCJul 19, 21:30 UTC30m
2026-07-19 EZY646Q LPL → BFS Jul 19, 19:45 UTCJul 19, 20:15 UTC30m
2026-07-19 EZY32MN RHO → BRS Jul 19, 17:50 UTCJul 19, 18:45 UTC55m
2026-07-19 EZY63PJ IOM → LGW Jul 19, 15:40 UTCJul 19, 16:40 UTC1h 0m
2026-07-19 EZY95AM JER → LPL Jul 19, 13:35 UTCJul 19, 14:35 UTC1h 0m
2026-07-19 EZY19DV LPL → JER Jul 19, 12:00 UTCJul 19, 12:50 UTC50m
2026-07-19 EZY46AB - Jul 19, 08:40 UTCJul 19, 10:50 UTC2h 10m
2026-07-19 EZY91FG - Jul 19, 05:05 UTCJul 19, 07:15 UTC2h 10m
2026-07-18 EZY91KY - Jul 18, 23:25 UTCJul 19, 01:45 UTC2h 20m
2026-07-18 EZY76RM - Jul 18, 20:20 UTCJul 18, 22:35 UTC2h 15m
2026-07-18 EZY85XV NCE → LPL Jul 18, 17:15 UTCJul 18, 19:25 UTC2h 10m
2026-07-18 EZY42GF PMI → BFS Jul 18, 13:00 UTCJul 18, 15:00 UTC2h 0m

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

Mode-S 405B66 frequently asked

What is Mode-S code 405B66?
405B66 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EZDM.
Where is Mode-S 405B66 registered?
Mode-S code 405B66 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 405B66 broadcasting right now?
Yes. Mode-S 405B66 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 405B66, octal 20055546, decimal 4,217,702.
What flights does 405B66 operate?
Mode-S 405B66 has broadcast 20 distinct callsigns, including EZY9, EZY86KV, EZY59NU, EZY42UA, EZY36DH.