sensors Mode-S transponder

4073A1

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-UZHD · AIRBUS A-320neo

Hex
4073A1
Octal
20071641
Decimal
4,223,905
Country
GB
Tail
G-UZHD
Type
A20N
Broadcasting now · callsign EZY57LF · 30,375 ft
Flights observed
454
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 22:15 UTC

Current position

4073A1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4073A1 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
EZY76PT - 19 2026-07-16
EZY58HQ - 18 2026-07-16
EZY78YZ easyJet 15 2026-07-14
EZY53HB - 15 2026-07-14
EZY38RY - 10 2026-07-12
EZY14JX - 10 2026-07-12
EZY96XD - 9 2026-07-17
EZY67XU - 9 2026-07-03
EZY28NB - 9 2026-07-12
EZY95GU - 8 2026-07-12
EZY95FH - 8 2026-07-10
EZY84AT - 7 2026-06-24
EZY83AF - 7 2026-06-24
EZY51TZ - 7 2026-07-03
EZY46YE - 7 2026-07-15
EZY31NG - 7 2026-07-03
EZY79WM easyJet 6 2026-05-08
EZY71FM - 6 2026-07-15
EZY64UT easyJet 6 2026-07-18
EZY63ZY - 6 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZY34GB BRS → TFS Jul 26, 20:50 UTCJul 26, 22:10 UTC1h 20m
2026-07-26 EZY97TM BRS → BOD Jul 26, 18:45 UTCJul 26, 19:55 UTC1h 10m
2026-07-26 EZY262 BHD → BRS Jul 26, 17:15 UTCJul 26, 17:55 UTC40m
2026-07-26 EZY696U BRS → BHD Jul 26, 15:30 UTCJul 26, 16:25 UTC55m
2026-07-26 EZY53ML TFS → BRS Jul 26, 10:15 UTCJul 26, 14:00 UTC3h 45m
2026-07-26 EZY89HE BRS → TFS Jul 26, 05:25 UTCJul 26, 08:50 UTC3h 26m
2026-07-25 EZY18GB SKG → BRS Jul 25, 18:30 UTCJul 25, 21:45 UTC3h 15m
2026-07-25 EZY2879 BRS → SKG Jul 25, 14:20 UTCJul 25, 17:15 UTC2h 55m
2026-07-25 EZY59UZ FNC → BRS Jul 25, 09:55 UTCJul 25, 13:10 UTC3h 15m
2026-07-25 EZY52NQ BRS → FNC Jul 25, 08:45 UTCJul 25, 08:55 UTC10m
2026-07-25 EZY52NQ BRS → FNC Jul 25, 05:50 UTCJul 25, 08:10 UTC2h 20m
2026-07-24 EZY69HD MAD → BRS Jul 24, 20:40 UTCJul 24, 22:25 UTC1h 45m
2026-07-24 EZY41HL BRS → MAD Jul 24, 17:55 UTCJul 24, 19:40 UTC1h 45m
2026-07-24 EZY83VR CDG → BRS Jul 24, 15:25 UTCJul 24, 16:20 UTC55m
2026-07-24 EZY21WC BRS → CDG Jul 24, 13:15 UTCJul 24, 14:10 UTC55m
2026-07-24 EZY82NZ AGP → BRS Jul 24, 09:05 UTCJul 24, 11:15 UTC2h 10m
2026-07-24 EZY63KQ - Jul 24, 05:20 UTCJul 24, 07:50 UTC2h 30m
2026-07-23 EZY75QC LIS → BRS Jul 23, 19:55 UTCJul 23, 21:50 UTC1h 55m
2026-07-23 EZY46AK BRS → LIS Jul 23, 16:00 UTCJul 23, 18:15 UTC2h 15m
2026-07-23 EZY34EN - Jul 23, 10:50 UTCJul 23, 13:25 UTC2h 35m
2026-07-23 EZY39DR LTN → NAP Jul 23, 05:05 UTCJul 23, 07:25 UTC2h 20m
2026-07-22 EZY19YL LCA → LTN Jul 22, 14:05 UTCJul 22, 18:50 UTC4h 45m
2026-07-22 EZY76QY - Jul 22, 10:20 UTCJul 22, 12:35 UTC2h 15m
2026-07-21 EZY91VY AGP → LTN Jul 21, 18:25 UTCJul 21, 20:45 UTC2h 20m
2026-07-21 EZY84LF - Jul 21, 14:10 UTCJul 21, 17:00 UTC2h 50m
2026-07-21 EZY648L LTN → BFS Jul 21, 12:15 UTCJul 21, 13:10 UTC55m
2026-07-21 EZY43TZ BCN → LTN Jul 21, 09:25 UTCJul 21, 11:15 UTC1h 50m
2026-07-21 EZY64KL LTN → BCN Jul 21, 06:10 UTCJul 21, 08:00 UTC1h 50m
2026-07-20 EZY47FQ IBZ → LTN Jul 20, 22:55 UTCJul 21, 01:00 UTC2h 4m
2026-07-20 EZY81QH LTN → IBZ Jul 20, 19:45 UTCJul 20, 21:50 UTC2h 5m
2026-07-20 EZY74JC JER → LTN Jul 20, 17:50 UTCJul 20, 18:30 UTC40m
2026-07-20 EZY18RN LTN → JER Jul 20, 16:15 UTCJul 20, 17:00 UTC45m
2026-07-20 EZY45MC BOD → LTN Jul 20, 13:40 UTCJul 20, 14:55 UTC1h 15m
2026-07-20 EZY29BN - Jul 20, 11:10 UTCJul 20, 12:35 UTC1h 25m
2026-07-20 EZY45WJ - Jul 20, 09:10 UTCJul 20, 09:55 UTC45m
2026-07-20 EZY656V LTN → BHD Jul 20, 07:15 UTCJul 20, 08:05 UTC50m
2026-07-19 EZY2404 CHQ → LTN Jul 19, 22:30 UTCJul 20, 02:05 UTC3h 35m
2026-07-19 EZY14KC - Jul 19, 17:45 UTCJul 19, 21:15 UTC3h 30m
2026-07-19 EZY37BK BCN → LGW Jul 19, 11:55 UTCJul 19, 15:40 UTC3h 45m
2026-07-19 EZY79QD - Jul 19, 06:35 UTCJul 19, 10:30 UTC3h 55m
2026-07-18 EZY64UT ALC → SEN Jul 18, 19:30 UTCJul 19, 00:05 UTC4h 35m
2026-07-18 EZY37KC - Jul 18, 14:05 UTCJul 18, 18:10 UTC4h 5m
2026-07-18 EZY42MY FAO → LTN Jul 18, 09:40 UTCJul 18, 12:00 UTC2h 20m
2026-07-18 EZY59RP LTN → FAO Jul 18, 05:55 UTCJul 18, 08:35 UTC2h 40m
2026-07-17 EZY13MJ - Jul 17, 22:25 UTCJul 17, 23:25 UTC1h 0m
2026-07-17 EZY547L LTN → ABZ Jul 17, 20:29 UTCJul 17, 21:30 UTC1h 0m
2026-07-17 EZY25AP - Jul 17, 17:20 UTCJul 17, 19:09 UTC1h 50m
2026-07-17 EZY306H LTN → GVA Jul 17, 14:50 UTCJul 17, 16:15 UTC1h 25m
2026-07-17 EZY42MY FAO → LTN Jul 17, 09:50 UTCJul 17, 12:15 UTC2h 25m
2026-07-17 EZY96XD - Jul 17, 05:20 UTCJul 17, 07:55 UTC2h 35m

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

Mode-S 4073A1 frequently asked

What is Mode-S code 4073A1?
4073A1 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-UZHD.
Where is Mode-S 4073A1 registered?
Mode-S code 4073A1 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 4073A1 broadcasting right now?
Yes. Mode-S 4073A1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4073A1, octal 20071641, decimal 4,223,905.
What flights does 4073A1 operate?
Mode-S 4073A1 has broadcast 20 distinct callsigns, including EZY76PT, EZY58HQ, EZY78YZ, EZY53HB, EZY38RY.