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
Transponder active on ground
Flights observed
262
Distinct callsigns
20
Country
GB
Last broadcast
37m ago

Last known position

Most recent position reported by Mode-S 405B66.

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 - 7 2026-04-14
EZY41PQ easyJet 4 2026-05-18
EZY39HL easyJet 4 2026-05-18
EZY959N easyJet 3 2026-05-06
EZY91QH easyJet 3 2026-05-06
EZY87KZ easyJet 3 2026-04-20
EZY86KV easyJet 3 2026-05-23
EZY85JY - 3 2026-05-18
EZY82WL easyJet 3 2026-04-17
EZY78DG - 3 2026-05-18
EZY59NU easyJet 3 2026-05-17
EZY58HW - 3 2026-04-17
EZY36DH easyJet 3 2026-05-17
EZY34CT - 3 2026-05-18
EZY268A easyJet 3 2026-05-17
EZY95PL easyJet 2 2026-05-17
EZY95BM easyJet 2 2026-04-28
EZY93HL easyJet 2 2026-05-15
EZY91AM easyJet 2 2026-04-15
EZY9096 - 2 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 EZY67PB BFS → LPL May 30, 06:35 UTCMay 30, 07:10 UTC35m
2026-05-29 EZY576X LTN → BFS May 29, 06:10 UTCMay 29, 07:05 UTC55m
2026-05-28 EZY79RA GLA → LTN May 28, 20:45 UTCMay 28, 21:35 UTC50m
2026-05-28 EZY653E LTN → GLA May 28, 19:15 UTCMay 28, 20:05 UTC50m
2026-05-28 EZY35AB TIV → MAN May 28, 15:55 UTCMay 28, 18:20 UTC2h 25m
2026-05-28 EZY35DC LTN → LIS May 28, 11:55 UTCMay 28, 14:15 UTC2h 20m
2026-05-28 EZY92DA OLB → LGW May 28, 08:55 UTCMay 28, 09:50 UTC55m
2026-05-28 EZY745F - May 28, 07:15 UTCMay 28, 08:15 UTC1h 0m
2026-05-27 EZY658 ABZ → LTN May 27, 20:05 UTCMay 27, 21:05 UTC1h 0m
2026-05-27 EZY657 LTN → ABZ May 27, 15:05 UTCMay 27, 16:15 UTC1h 10m
2026-05-26 EZY89TW EDI → LTN May 26, 19:30 UTCMay 26, 20:29 UTC1h 0m
2026-05-26 EZY371M LTN → EDI May 26, 17:44 UTCMay 26, 18:40 UTC55m
2026-05-26 EZY45MC BOD → LTN May 26, 15:14 UTCMay 26, 16:30 UTC1h 15m
2026-05-26 EZY29BN LTN → BOD May 26, 12:54 UTCMay 26, 14:09 UTC1h 15m
2026-05-26 EZY13FR AMS → LTN May 26, 10:50 UTCMay 26, 11:39 UTC50m
2026-05-26 EZY37KV - May 26, 08:50 UTCMay 26, 09:29 UTC40m
2026-05-26 EZY67QD AMS → LTN May 26, 07:05 UTCMay 26, 07:55 UTC50m
2026-05-26 EZY96CP - May 26, 05:25 UTCMay 26, 06:04 UTC40m
2026-05-25 EZY82FH AMS → LTN May 25, 19:44 UTCMay 25, 20:34 UTC50m
2026-05-25 EZY93BK LTN → AMS May 25, 18:10 UTCMay 25, 18:45 UTC35m
2026-05-25 EZY29WP FAO → LTN May 25, 14:55 UTCMay 25, 17:10 UTC2h 15m
2026-05-25 EZY78TP LTN → FAO May 25, 11:25 UTCMay 25, 14:00 UTC2h 35m
2026-05-25 EZY18CE BER → LTN May 25, 08:15 UTCMay 25, 09:45 UTC1h 30m
2026-05-25 EZY71RM LTN → BER May 25, 05:35 UTCMay 25, 07:00 UTC1h 25m
2026-05-24 EZY84KQ MAD → LTN May 24, 20:40 UTCMay 24, 21:45 UTC1h 5m
2026-05-24 EZY24EW - May 24, 12:15 UTCMay 24, 14:10 UTC1h 55m
2026-05-24 EZY15JL - May 24, 09:15 UTCMay 24, 11:15 UTC2h 0m
2026-05-24 EZY79YA LTN → PSA May 24, 05:50 UTCMay 24, 07:45 UTC1h 55m
2026-05-23 EZY13FR - May 23, 20:10 UTCMay 23, 20:50 UTC40m
2026-05-23 EZY37KV - May 23, 18:25 UTCMay 23, 19:00 UTC35m
2026-05-23 EZY12FG LTN → CDG May 23, 15:35 UTCMay 23, 17:20 UTC1h 45m
2026-05-23 EZY86KV LGW → BCN May 23, 12:40 UTCMay 23, 14:15 UTC1h 35m
2026-05-23 EZY16VL VLC → LGW May 23, 09:10 UTCMay 23, 11:10 UTC2h 0m
2026-05-23 EZY94ZH LGW → VLC May 23, 06:00 UTCMay 23, 07:50 UTC1h 50m
2026-05-22 EZY86KZ - May 22, 20:35 UTCMay 22, 21:40 UTC1h 5m
2026-05-22 EZY973R LGW → BFS May 22, 18:45 UTCMay 22, 19:45 UTC1h 0m
2026-05-22 EZY42ZC INV → LGW May 22, 16:10 UTCMay 22, 17:40 UTC1h 30m
2026-05-22 EZY816K LGW → INV May 22, 13:45 UTCMay 22, 14:50 UTC1h 5m
2026-05-22 EZY43DX LTN → AMS May 22, 10:05 UTCMay 22, 12:30 UTC2h 25m
2026-05-22 EZY64XT HER → MAN May 22, 06:40 UTCMay 22, 08:50 UTC2h 10m
2026-05-21 EZY9005 LPL → MAN May 21, 09:25 UTCMay 21, 11:20 UTC1h 55m
2026-05-20 EZY86KV LGW → BCN May 20, 10:55 UTCMay 20, 12:25 UTC1h 30m
2026-05-20 EZY61TU LGW → BOD May 20, 08:05 UTCMay 20, 09:40 UTC1h 35m
2026-05-20 EZY53JV LGW → MRS May 20, 05:35 UTCMay 20, 07:00 UTC1h 25m
2026-05-19 EZY8470 SXB → LGW May 19, 19:30 UTCMay 19, 20:40 UTC1h 10m
2026-05-19 EZY13VN LGW → SXB May 19, 17:40 UTCMay 19, 18:50 UTC1h 10m
2026-05-19 EZY53XQ MAN → KRK May 19, 14:55 UTCMay 19, 16:30 UTC1h 35m
2026-05-19 EZY86QU LGW → NCE May 19, 12:05 UTCMay 19, 13:30 UTC1h 25m
2026-05-19 EZY59ED - May 19, 08:25 UTCMay 19, 10:40 UTC2h 15m
2026-05-19 EZY63TU - May 19, 04:50 UTCMay 19, 06:55 UTC2h 5m

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?
Mode-S 405B66 is currently broadcasting from the ground.
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, EZY41PQ, EZY39HL, EZY959N, EZY91QH.