Apparatus

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sensors Mode-S transponder

4B027D

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-AYN · AIRBUS A-320neo

Hex
4B027D
Octal
22601175
Decimal
4,915,837
Country
CH
Tail
HB-AYN
Type
A20N
No current signal · last broadcast 5h ago
Flights observed
203
Distinct callsigns
20
Country
CH
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 4B027D.

Country allocation

The ICAO 24-bit address 4B027D falls within the block assigned to Switzerland (CH) by ICAO Annex 10, Volume III. Every aircraft registered in Switzerland 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
EZS91GN Easyjet Switzerland 6 2026-05-17
EZS5845 Easyjet Switzerland 6 2026-05-17
EZS75BQ Easyjet Switzerland 5 2026-05-21
EZS5826 Easyjet Switzerland 5 2026-05-11
EZS68ZP Easyjet Switzerland 4 2026-05-21
EZS24YK Easyjet Switzerland 4 2026-05-11
EJU98HB - 4 2026-05-20
EJU79WZ easyJet Europe 4 2026-05-22
EJU48PU easyJet Europe 4 2026-05-22
EJU47HM easyJet Europe 4 2026-05-20
EZS9074 Easyjet Switzerland 3 2026-04-30
EZS5890 Easyjet Switzerland 3 2026-05-10
EZS459L Easyjet Switzerland 3 2026-05-02
EZS43RD Easyjet Switzerland 3 2026-05-08
EZS19VR Easyjet Switzerland 3 2026-05-02
EZS16HQ Easyjet Switzerland 3 2026-05-02
EZS15YB Easyjet Switzerland 3 2026-05-08
EJU85HR easyJet Europe 3 2026-05-05
EJU85DP easyJet Europe 3 2026-05-05
EZS9072 Easyjet Switzerland 2 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 EZS52CP HER → GVA Jun 2, 19:15 UTCJun 2, 21:55 UTC2h 40m
2026-06-02 EZS86XB GVA → HER Jun 2, 15:25 UTCJun 2, 18:05 UTC2h 40m
2026-06-02 EJU16RK TFS → GVA Jun 2, 09:15 UTCJun 2, 13:00 UTC3h 45m
2026-06-02 EJU31MY OPO → BER Jun 2, 04:10 UTCJun 2, 07:45 UTC3h 35m
2026-06-01 EZS41RL PRN → GVA Jun 1, 19:10 UTCJun 1, 21:00 UTC1h 50m
2026-06-01 EZS1489 GVA → PRN Jun 1, 16:15 UTCJun 1, 17:55 UTC1h 40m
2026-06-01 EZS79KV VCE → GVA Jun 1, 13:55 UTCJun 1, 14:50 UTC55m
2026-06-01 EZS63KJ GVA → VCE Jun 1, 11:50 UTCJun 1, 12:50 UTC1h 0m
2026-06-01 EZS31QP ATH → GVA Jun 1, 08:15 UTCJun 1, 10:50 UTC2h 35m
2026-06-01 EZS68GV GVA → ATH Jun 1, 04:45 UTCJun 1, 07:05 UTC2h 20m
2026-05-31 EZS84BA RAK → GVA May 31, 14:05 UTCMay 31, 20:55 UTC6h 50m
2026-05-31 EZS79KV VCE → GVA May 31, 12:00 UTCMay 31, 12:50 UTC50m
2026-05-31 EZS63KJ GVA → VCE May 31, 10:05 UTCMay 31, 10:55 UTC50m
2026-05-31 EJU52WT SCQ → GVA May 31, 08:25 UTCMay 31, 08:55 UTC30m
2026-05-30 EJU16RK TFS → GVA May 30, 16:20 UTCMay 30, 19:40 UTC3h 20m
2026-05-30 EJU31MY OPO → BER May 30, 10:55 UTCMay 30, 14:40 UTC3h 45m
2026-05-30 EZS14LH - May 30, 07:50 UTCMay 30, 09:40 UTC1h 50m
2026-05-30 EZS12XR GVA → PRN May 30, 04:40 UTCMay 30, 06:25 UTC1h 45m
2026-05-29 EZS59MQ LGW → GVA May 29, 19:25 UTCMay 29, 20:35 UTC1h 10m
2026-05-29 EZS23YH GVA → LGW May 29, 17:20 UTCMay 29, 18:30 UTC1h 10m
2026-05-29 EJU87RL IBZ → GVA May 29, 14:35 UTCMay 29, 16:10 UTC1h 35m
2026-05-29 EJU85KQ OPO → BSL May 29, 12:15 UTCMay 29, 13:40 UTC1h 25m
2026-05-29 EZS67AR RAK → GVA May 29, 08:15 UTCMay 29, 11:05 UTC2h 50m
2026-05-29 EZS58KB GVA → RAK May 29, 04:20 UTCMay 29, 06:55 UTC2h 35m
2026-05-28 EZS36FD PMO → GVA May 28, 19:35 UTCMay 28, 21:15 UTC1h 40m
2026-05-28 EZS82EN GVA → PMO May 28, 16:55 UTCMay 28, 18:30 UTC1h 35m
2026-05-28 EZS34ML LCG → GVA May 28, 14:10 UTCMay 28, 15:55 UTC1h 45m
2026-05-28 EZS1369 GVA → LCG May 28, 11:00 UTCMay 28, 12:55 UTC1h 55m
2026-05-28 EZS46MW TIA → GVA May 28, 08:05 UTCMay 28, 09:55 UTC1h 50m
2026-05-28 EZS31WH - May 28, 05:15 UTCMay 28, 06:55 UTC1h 40m
2026-05-27 EZS84LU BOD → GVA May 27, 18:05 UTCMay 27, 19:05 UTC1h 0m
2026-05-27 EZS46NT GVA → BOD May 27, 16:20 UTCMay 27, 17:15 UTC55m
2026-05-27 EZS16QR - May 27, 13:20 UTCMay 27, 15:15 UTC1h 55m
2026-05-27 EZS62KF GVA → EDI May 27, 10:10 UTCMay 27, 12:00 UTC1h 50m
2026-05-27 EZS72MD OPO → GVA May 27, 07:10 UTCMay 27, 09:00 UTC1h 50m
2026-05-27 EZS25QK GVA → OPO May 27, 04:14 UTCMay 27, 06:15 UTC2h 0m
2026-05-26 EZS78KW FNC → GVA May 26, 17:35 UTCMay 26, 20:45 UTC3h 10m
2026-05-26 EZS45RN GVA → FNC May 26, 16:20 UTCMay 26, 16:30 UTC10m
2026-05-26 EZS45RN GVA → FNC May 26, 13:10 UTCMay 26, 15:39 UTC2h 30m
2026-05-26 EZS13BL - May 26, 08:59 UTCMay 26, 11:20 UTC2h 20m
2026-05-26 EZS58WL - May 26, 05:15 UTCMay 26, 07:34 UTC2h 20m
2026-05-25 EZS1590 ARN → GVA May 25, 19:30 UTCMay 25, 20:50 UTC1h 20m
2026-05-25 EZS1589 GVA → BER May 25, 17:15 UTCMay 25, 18:35 UTC1h 20m
2026-05-25 EZS48NQ SKP → GVA May 25, 14:20 UTCMay 25, 16:10 UTC1h 50m
2026-05-25 EZS21WG GVA → SKP May 25, 11:00 UTCMay 25, 12:50 UTC1h 50m
2026-05-25 EZS48AX - May 25, 08:00 UTCMay 25, 09:45 UTC1h 45m
2026-05-25 EZS62HY PRG → BSL May 25, 05:05 UTCMay 25, 06:55 UTC1h 50m
2026-05-24 EZS31QP ATH → GVA May 24, 18:25 UTCMay 24, 20:50 UTC2h 25m
2026-05-24 EZS68GV GVA → ATH May 24, 14:50 UTCMay 24, 17:20 UTC2h 30m
2026-05-24 EZS24HA LUX → BER May 24, 12:10 UTCMay 24, 13:50 UTC1h 40m

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 HB-AYN page for operator, model, and routing details .

Mode-S 4B027D frequently asked

What is Mode-S code 4B027D?
4B027D is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-AYN.
Where is Mode-S 4B027D registered?
Mode-S code 4B027D is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B027D broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B027D, octal 22601175, decimal 4,915,837.
What flights does 4B027D operate?
Mode-S 4B027D has broadcast 20 distinct callsigns, including EZS91GN, EZS5845, EZS75BQ, EZS5826, EZS68ZP.