Apparatus

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sensors Mode-S transponder

4B027C

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B027C
Octal
22601174
Decimal
4,915,836
Country
CH
Tail
HB-AYM
Type
A20N
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
532
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S 4B027C.

Country allocation

The ICAO 24-bit address 4B027C 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
EJU54LH easyJet Europe 13 2026-06-23
EJU16BQ - 10 2026-06-23
EZS85YX Easyjet Switzerland 9 2026-06-24
EZS23HQ Easyjet Switzerland 8 2026-06-24
EJU47HM easyJet Europe 8 2026-06-04
EZS32PC - 7 2026-06-25
EZS21MA - 7 2026-06-25
EZS91GN Easyjet Switzerland 6 2026-05-21
EZS72WT Easyjet Switzerland 6 2026-06-20
EZS5845 Easyjet Switzerland 6 2026-05-21
EZS12HA Easyjet Switzerland 5 2026-05-05
EJU98HB - 5 2026-06-04
EZS87TN Easyjet Switzerland 4 2026-05-05
EZS83KB Easyjet Switzerland 4 2026-07-19
EZS76NT Easyjet Switzerland 4 2026-05-18
EZS74UB - 4 2026-07-19
EZS67CP Easyjet Switzerland 4 2026-07-19
EZS62KF Easyjet Switzerland 4 2026-07-26
EZS54KG - 4 2026-07-19
EZS41KF Easyjet Switzerland 4 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS16QR EDI → GVA Jul 26, 19:10 UTCJul 26, 20:50 UTC1h 40m
2026-07-26 EZS62KF GVA → EDI Jul 26, 16:00 UTCJul 26, 18:05 UTC2h 5m
2026-07-26 EZS63BD LIS → GVA Jul 26, 12:10 UTCJul 26, 14:30 UTC2h 20m
2026-07-26 EZS79YP GVA → LIS Jul 26, 08:55 UTCJul 26, 10:50 UTC1h 55m
2026-07-26 EZS47HC SPU → GVA Jul 26, 06:30 UTCJul 26, 07:40 UTC1h 11m
2026-07-26 EZS91DA GVA → SPU Jul 26, 04:05 UTCJul 26, 05:05 UTC1h 0m
2026-07-25 EZS73RT PRN → GVA Jul 25, 16:50 UTCJul 25, 21:45 UTC4h 55m
2026-07-25 EZS98NZ - Jul 25, 14:45 UTCJul 25, 15:50 UTC1h 5m
2026-07-25 EZS81FQ GVA → MAH Jul 25, 11:15 UTCJul 25, 12:20 UTC1h 5m
2026-07-25 EZS14LH - Jul 25, 08:25 UTCJul 25, 10:00 UTC1h 35m
2026-07-25 EZS12XR GVA → PRN Jul 25, 05:05 UTCJul 25, 06:35 UTC1h 30m
2026-07-24 EZS84BA RAK → GVA Jul 24, 18:20 UTCJul 24, 20:50 UTC2h 30m
2026-07-24 EZS52HV GVA → RAK Jul 24, 14:30 UTCJul 24, 17:10 UTC2h 40m
2026-07-24 EZS52CP HER → GVA Jul 24, 10:20 UTCJul 24, 13:15 UTC2h 55m
2026-07-24 EZS86XB GVA → HER Jul 24, 06:20 UTCJul 24, 08:40 UTC2h 20m
2026-07-23 EZS35WT OPO → GVA Jul 23, 18:35 UTCJul 23, 20:20 UTC1h 45m
2026-07-23 EZS76KB GVA → OPO Jul 23, 15:35 UTCJul 23, 17:45 UTC2h 10m
2026-07-23 EZS45BC HRG → GVA Jul 23, 04:20 UTCJul 23, 14:20 UTC10h 0m
2026-07-22 EZS1508 FAO → GVA Jul 22, 19:30 UTCJul 22, 21:35 UTC2h 5m
2026-07-22 EZS1507 GVA → FAO Jul 22, 16:15 UTCJul 22, 18:30 UTC2h 15m
2026-07-22 EZS1354 CLY → GVA Jul 22, 14:10 UTCJul 22, 15:05 UTC55m
2026-07-22 EZS65JT GVA → CLY Jul 22, 12:10 UTCJul 22, 13:00 UTC50m
2026-07-22 EZS52HV GVA → RAK Jul 22, 04:10 UTCJul 22, 11:30 UTC7h 20m
2026-07-21 EZS84LU BOD → GVA Jul 21, 19:25 UTCJul 21, 20:25 UTC1h 0m
2026-07-21 EZS63WG GVA → BOD Jul 21, 17:35 UTCJul 21, 18:40 UTC1h 5m
2026-07-21 EZS24ZQ OPO → GVA Jul 21, 14:50 UTCJul 21, 16:35 UTC1h 45m
2026-07-21 EZS42WF GVA → OPO Jul 21, 11:50 UTCJul 21, 13:50 UTC2h 0m
2026-07-21 EZS68CN JMK → GVA Jul 21, 07:50 UTCJul 21, 10:40 UTC2h 50m
2026-07-21 EZS73GL GVA → JMK Jul 21, 04:20 UTCJul 21, 06:40 UTC2h 20m
2026-07-20 EZS35JU - Jul 20, 19:35 UTCJul 20, 20:30 UTC55m
2026-07-20 EZS27FR - Jul 20, 17:30 UTCJul 20, 18:40 UTC1h 10m
2026-07-20 EZS54RD OPO → GVA Jul 20, 14:50 UTCJul 20, 16:30 UTC1h 40m
2026-07-20 EZS74RG GVA → OPO Jul 20, 11:40 UTCJul 20, 13:50 UTC2h 10m
2026-07-20 EZS31QP ATH → GVA Jul 20, 07:55 UTCJul 20, 10:35 UTC2h 40m
2026-07-20 EZS37UH BSL → ATH Jul 20, 04:10 UTCJul 20, 06:30 UTC2h 20m
2026-07-19 EZS54KG BUD → BSL Jul 19, 20:20 UTCJul 19, 21:45 UTC1h 25m
2026-07-19 EZS74UB BSL → BUD Jul 19, 18:15 UTCJul 19, 19:25 UTC1h 10m
2026-07-19 EZS67CP BER → BSL Jul 19, 16:00 UTCJul 19, 17:10 UTC1h 10m
2026-07-19 EZS83KB BSL → BER Jul 19, 14:00 UTCJul 19, 15:00 UTC1h 0m
2026-07-19 EZS62GB KGS → BSL Jul 19, 09:55 UTCJul 19, 12:50 UTC2h 55m
2026-07-19 EZS46HU BSL → KGS Jul 19, 05:20 UTCJul 19, 07:50 UTC2h 30m
2026-07-19 EZS71BM - Jul 19, 00:40 UTCJul 19, 03:45 UTC3h 5m
2026-07-18 EZS68EP BSL → KEF Jul 18, 19:25 UTCJul 18, 23:25 UTC4h 0m
2026-07-18 EZS83XM - Jul 18, 15:45 UTCJul 18, 18:20 UTC2h 35m
2026-07-18 EZS1251 - Jul 18, 10:40 UTCJul 18, 13:55 UTC3h 15m
2026-07-18 EZS82DC SKG → BSL Jul 18, 07:25 UTCJul 18, 09:40 UTC2h 15m
2026-07-18 EZS52YT BSL → SKG Jul 18, 04:25 UTCJul 18, 06:20 UTC1h 55m
2026-07-17 EZS54KG BUD → BSL Jul 17, 21:00 UTCJul 17, 22:25 UTC1h 25m
2026-07-17 EZS74UB - Jul 17, 18:15 UTCJul 17, 19:25 UTC1h 10m
2026-07-17 EZS28NQ - Jul 17, 15:35 UTCJul 17, 17:09 UTC1h 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 HB-AYM page for operator, model, and routing details .

Mode-S 4B027C frequently asked

What is Mode-S code 4B027C?
4B027C is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-AYM.
Where is Mode-S 4B027C registered?
Mode-S code 4B027C is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B027C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B027C, octal 22601174, decimal 4,915,836.
What flights does 4B027C operate?
Mode-S 4B027C has broadcast 20 distinct callsigns, including EJU54LH, EJU16BQ, EZS85YX, EZS23HQ, EJU47HM.