Apparatus

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sensors Mode-S transponder

4B027F

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B027F
Octal
22601177
Decimal
4,915,839
Country
CH
Tail
HB-AYP
Type
A20N
Broadcasting now · callsign EJU95FD · 36,000 ft
Flights observed
482
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:00 UTC

Current position

4B027F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B027F 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
EZS84CQ Easyjet Switzerland 6 2026-07-25
EZS68ME - 6 2026-07-08
EZS68LG Easyjet Switzerland 6 2026-07-25
EZS5839 Easyjet Switzerland 6 2026-05-19
EZS52RH - 6 2026-07-08
EJU98HB - 6 2026-05-02
EZS73RT Easyjet Switzerland 5 2026-06-25
EZS5853 Easyjet Switzerland 5 2026-04-30
EZS36JQ Easyjet Switzerland 5 2026-05-19
EZS34PY - 5 2026-07-10
EZS19WQ Easyjet Switzerland 5 2026-06-25
EJU47HM easyJet Europe 5 2026-05-02
EJU38CG easyJet Europe 5 2026-05-16
EZS9071 Easyjet Switzerland 4 2026-05-06
EZS86YF Easyjet Switzerland 4 2026-05-08
EZS85NY Easyjet Switzerland 4 2026-04-30
EZS83LF - 4 2026-06-22
EZS81ZB Easyjet Switzerland 4 2026-06-22
EZS81MK - 4 2026-07-16
EZS79YP - 4 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS31QP ATH → GVA Jul 26, 18:30 UTCJul 26, 21:00 UTC2h 30m
2026-07-26 EZS49KC GVA → ATH Jul 26, 14:55 UTCJul 26, 17:10 UTC2h 15m
2026-07-26 EJU16RK TFS → GVA Jul 26, 04:15 UTCJul 26, 13:00 UTC8h 46m
2026-07-25 EZS68LG JTR → GVA Jul 25, 19:30 UTCJul 25, 22:10 UTC2h 40m
2026-07-25 EZS84CQ GVA → JTR Jul 25, 16:00 UTCJul 25, 18:15 UTC2h 15m
2026-07-25 EZS73NW GVA → LGW Jul 25, 05:10 UTCJul 25, 13:05 UTC7h 55m
2026-07-24 EJU79CA IBZ → GVA Jul 24, 19:40 UTCJul 24, 21:10 UTC1h 30m
2026-07-24 EJU85QE - Jul 24, 17:20 UTCJul 24, 18:45 UTC1h 25m
2026-07-24 EZS48AX - Jul 24, 14:15 UTCJul 24, 16:10 UTC1h 55m
2026-07-24 EZS62HY PRG → BSL Jul 24, 11:25 UTCJul 24, 13:00 UTC1h 35m
2026-07-24 EZS48NQ SKP → GVA Jul 24, 08:20 UTCJul 24, 10:15 UTC1h 55m
2026-07-24 EZS21WG GVA → SKP Jul 24, 05:30 UTCJul 24, 07:05 UTC1h 35m
2026-07-23 EZS83TQ - Jul 23, 18:45 UTCJul 23, 20:05 UTC1h 20m
2026-07-23 EZS58ZV - Jul 23, 16:30 UTCJul 23, 17:45 UTC1h 15m
2026-07-23 EZS48DL NCE → GVA Jul 23, 13:50 UTCJul 23, 14:35 UTC45m
2026-07-23 EZS1397 - Jul 23, 12:10 UTCJul 23, 12:55 UTC45m
2026-07-23 EZS14LH - Jul 23, 08:50 UTCJul 23, 10:50 UTC2h 0m
2026-07-23 EZS12XR GVA → PRN Jul 23, 06:00 UTCJul 23, 07:35 UTC1h 35m
2026-07-23 EZS9076 GVA → NCE Jul 23, 04:20 UTCJul 23, 04:35 UTC15m
2026-07-22 EZS18AR LIS → GVA Jul 22, 23:05 UTCJul 23, 00:45 UTC1h 40m
2026-07-22 EZS1463 GVA → LIS Jul 22, 20:35 UTCJul 22, 21:20 UTC45m
2026-07-22 EZS62YX GVA → LIS Jul 22, 15:25 UTCJul 22, 18:35 UTC3h 10m
2026-07-22 EZS47XZ - Jul 22, 13:10 UTCJul 22, 14:15 UTC1h 5m
2026-07-22 EZS72QV - Jul 22, 11:10 UTCJul 22, 12:00 UTC50m
2026-07-22 EZS12XR GVA → PRN Jul 22, 04:30 UTCJul 22, 05:25 UTC55m
2026-07-21 EJU43TE BCN → GVA Jul 21, 19:25 UTCJul 21, 20:35 UTC1h 10m
2026-07-21 EJU42GT - Jul 21, 17:15 UTCJul 21, 18:25 UTC1h 10m
2026-07-21 EZS48DL NCE → GVA Jul 21, 15:35 UTCJul 21, 16:20 UTC45m
2026-07-21 EZS1397 GVA → NCE Jul 21, 13:55 UTCJul 21, 14:40 UTC45m
2026-07-21 EJU16RK TFS → GVA Jul 21, 09:35 UTCJul 21, 12:45 UTC3h 10m
2026-07-21 EJU31MY OPO → BER Jul 21, 04:10 UTCJul 21, 08:10 UTC4h 0m
2026-07-20 EZS78GR VLC → GVA Jul 20, 20:10 UTCJul 20, 21:40 UTC1h 30m
2026-07-20 EZS14EZ - Jul 20, 17:05 UTCJul 20, 18:40 UTC1h 35m
2026-07-20 EZS62GR OLB → GVA Jul 20, 15:00 UTCJul 20, 16:15 UTC1h 15m
2026-07-20 EZS91YN - Jul 20, 12:40 UTCJul 20, 13:40 UTC1h 0m
2026-07-20 EZS41BX BHX → GVA Jul 20, 10:25 UTCJul 20, 11:45 UTC1h 20m
2026-07-20 EZS1571 GVA → BHX Jul 20, 07:55 UTCJul 20, 09:25 UTC1h 30m
2026-07-19 EZS34AF OPO → GVA Jul 19, 19:20 UTCJul 19, 20:40 UTC1h 20m
2026-07-19 EZS43HQ GVA → PRG Jul 19, 17:00 UTCJul 19, 18:15 UTC1h 15m
2026-07-19 EJU84VV AGP → GVA Jul 19, 14:15 UTCJul 19, 16:05 UTC1h 50m
2026-07-19 EJU76QC NAP → MXP Jul 19, 10:55 UTCJul 19, 13:10 UTC2h 15m
2026-07-19 EZS36FD PMO → GVA Jul 19, 08:25 UTCJul 19, 09:55 UTC1h 30m
2026-07-19 EZS27BL BSL → PMO Jul 19, 05:45 UTCJul 19, 07:20 UTC1h 35m
2026-07-18 EZS792D - Jul 18, 18:55 UTCJul 18, 20:00 UTC1h 5m
2026-07-18 EZS152T - Jul 18, 16:35 UTCJul 18, 17:50 UTC1h 15m
2026-07-18 EZS32PC OLB → BSL Jul 18, 12:35 UTCJul 18, 13:50 UTC1h 15m
2026-07-18 EZS21NY ZRH → OLB Jul 18, 08:55 UTCJul 18, 10:25 UTC1h 30m
2026-07-18 EZS65PD OLB → ZRH Jul 18, 06:45 UTCJul 18, 07:50 UTC1h 5m
2026-07-18 EZS21MA - Jul 18, 04:15 UTCJul 18, 05:15 UTC1h 0m
2026-07-17 EJU85DK PRG → BSL Jul 17, 20:10 UTCJul 17, 21:10 UTC1h 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 HB-AYP page for operator, model, and routing details .

Mode-S 4B027F frequently asked

What is Mode-S code 4B027F?
4B027F is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-AYP.
Where is Mode-S 4B027F registered?
Mode-S code 4B027F is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B027F broadcasting right now?
Yes. Mode-S 4B027F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B027F, octal 22601177, decimal 4,915,839.
What flights does 4B027F operate?
Mode-S 4B027F has broadcast 20 distinct callsigns, including EZS84CQ, EZS68ME, EZS68LG, EZS5839, EZS52RH.