Apparatus

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sensors Mode-S transponder

4B027E

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B027E
Octal
22601176
Decimal
4,915,838
Country
CH
Tail
HB-AYO
Type
A20N
Broadcasting now · callsign EZS86XB · 37,000 ft
Flights observed
478
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:00 UTC

Current position

4B027E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B027E 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
EZS45RN Easyjet Switzerland 11 2026-07-25
EZS83LF - 9 2026-07-20
EZS78KW Easyjet Switzerland 8 2026-07-25
EZS31QP Easyjet Switzerland 7 2026-07-24
EZS75BQ Easyjet Switzerland 6 2026-05-20
EZS68ZP Easyjet Switzerland 6 2026-05-20
EZS62YX Easyjet Switzerland 6 2026-06-30
EZS18AR - 6 2026-06-30
EZS81ZB Easyjet Switzerland 5 2026-07-20
EJU79WZ - 5 2026-07-09
EJU51ND - 5 2026-04-14
EJU31MY - 5 2026-07-19
EZS91PX Easyjet Switzerland 4 2026-07-24
EZS86XB - 4 2026-07-03
EZS73NW - 4 2026-07-04
EZS72MD Easyjet Switzerland 4 2026-07-26
EZS65RV - 4 2026-07-04
EZS53DK - 4 2026-07-11
EZS52HV - 4 2026-07-08
EZS52CP - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS72MD OPO → GVA Jul 26, 18:55 UTCJul 26, 20:55 UTC2h 0m
2026-07-26 EZS25QK GVA → OPO Jul 26, 16:20 UTCJul 26, 18:05 UTC1h 45m
2026-07-26 EZS64FU SSH → GVA Jul 26, 05:15 UTCJul 26, 15:10 UTC9h 56m
2026-07-25 EZS78KW FNC → GVA Jul 25, 17:30 UTCJul 25, 20:35 UTC3h 5m
2026-07-25 EZS45RN GVA → FNC Jul 25, 16:20 UTCJul 25, 16:30 UTC10m
2026-07-25 EZS45RN GVA → FNC Jul 25, 13:05 UTCJul 25, 15:45 UTC2h 40m
2026-07-25 EZS61QV JMK → GVA Jul 25, 09:10 UTCJul 25, 11:50 UTC2h 40m
2026-07-25 EZS1487 GVA → BFS Jul 25, 05:35 UTCJul 25, 07:55 UTC2h 20m
2026-07-24 EZS91PX CPH → GVA Jul 24, 20:20 UTCJul 24, 21:55 UTC1h 35m
2026-07-24 EZS41MU GVA → CPH Jul 24, 17:40 UTCJul 24, 19:25 UTC1h 45m
2026-07-24 EZS42JW LGW → GVA Jul 24, 15:10 UTCJul 24, 16:25 UTC1h 15m
2026-07-24 EZS72YG GVA → LGW Jul 24, 12:15 UTCJul 24, 13:20 UTC1h 5m
2026-07-24 EZS31QP ATH → GVA Jul 24, 08:05 UTCJul 24, 10:50 UTC2h 45m
2026-07-24 EZS37UH BSL → ATH Jul 24, 04:20 UTCJul 24, 06:30 UTC2h 10m
2026-07-23 EZS91PR ACE → BSL Jul 23, 17:15 UTCJul 23, 20:35 UTC3h 20m
2026-07-23 EZS85BM - Jul 23, 12:00 UTCJul 23, 14:50 UTC2h 50m
2026-07-23 EZS1286 KRK → BSL Jul 23, 08:40 UTCJul 23, 10:40 UTC2h 0m
2026-07-23 EZS67CM BSL → OPO Jul 23, 05:25 UTCJul 23, 07:40 UTC2h 15m
2026-07-22 EZS51TE HAM → BSL Jul 22, 19:55 UTCJul 22, 20:55 UTC1h 0m
2026-07-22 EZS82KM BSL → HAM Jul 22, 17:45 UTCJul 22, 18:55 UTC1h 10m
2026-07-22 EJU54LH MAD → BSL Jul 22, 15:15 UTCJul 22, 16:55 UTC1h 40m
2026-07-22 EJU16BQ BSL → MAD Jul 22, 11:30 UTCJul 22, 13:15 UTC1h 45m
2026-07-22 EZS51PA - Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-21 EZS87ML SUF → GVA Jul 21, 20:15 UTCJul 21, 21:55 UTC1h 40m
2026-07-21 EZS1435 - Jul 21, 17:50 UTCJul 21, 19:15 UTC1h 25m
2026-07-21 EZS9358 - Jul 21, 15:50 UTCJul 21, 16:55 UTC1h 5m
2026-07-21 EZS9357 - Jul 21, 14:15 UTCJul 21, 15:05 UTC50m
2026-07-21 EZS48AX - Jul 21, 11:20 UTCJul 21, 13:10 UTC1h 50m
2026-07-21 EZS62HY PRG → BSL Jul 21, 08:25 UTCJul 21, 10:00 UTC1h 35m
2026-07-21 EZS62GR OLB → GVA Jul 21, 06:20 UTCJul 21, 07:30 UTC1h 10m
2026-07-21 EZS91YN - Jul 21, 04:20 UTCJul 21, 05:15 UTC55m
2026-07-20 EZS81ZB TBS → GVA Jul 20, 16:25 UTCJul 20, 21:05 UTC4h 40m
2026-07-20 EZS83LF - Jul 20, 15:00 UTCJul 20, 15:10 UTC10m
2026-07-20 EZS83LF - Jul 20, 11:20 UTCJul 20, 13:50 UTC2h 30m
2026-07-20 EZS63BD LIS → GVA Jul 20, 08:10 UTCJul 20, 10:05 UTC1h 55m
2026-07-20 EZS79YP GVA → LIS Jul 20, 04:20 UTCJul 20, 06:45 UTC2h 25m
2026-07-19 EZS81AP OLB → GVA Jul 19, 20:45 UTCJul 19, 21:45 UTC1h 0m
2026-07-19 EZS1438 - Jul 19, 17:45 UTCJul 19, 18:55 UTC1h 10m
2026-07-19 EZS1438 ZRH → ZRH Jul 19, 17:30 UTCJul 19, 17:35 UTC5m
2026-07-19 EZS92NZ OLB → ZRH Jul 19, 15:40 UTCJul 19, 16:45 UTC1h 5m
2026-07-19 EZS79ER - Jul 19, 13:20 UTCJul 19, 14:20 UTC1h 0m
2026-07-19 EJU16RK TFS → GVA Jul 19, 09:15 UTCJul 19, 12:25 UTC3h 10m
2026-07-19 EJU31MY - Jul 19, 04:05 UTCJul 19, 08:00 UTC3h 55m
2026-07-18 EZS78KW FNC → GVA Jul 18, 17:40 UTCJul 18, 20:35 UTC2h 55m
2026-07-18 EZS45RN - Jul 18, 16:30 UTCJul 18, 16:40 UTC10m
2026-07-18 EZS45RN - Jul 18, 13:00 UTCJul 18, 15:55 UTC2h 55m
2026-07-18 EZS61QV JMK → GVA Jul 18, 09:10 UTCJul 18, 11:50 UTC2h 40m
2026-07-18 EZS1487 GVA → BFS Jul 18, 05:25 UTCJul 18, 07:50 UTC2h 25m
2026-07-17 EZS75XR BRU → GVA Jul 17, 18:40 UTCJul 17, 19:35 UTC55m
2026-07-17 EZS79EL GVA → BRU Jul 17, 16:49 UTCJul 17, 17:50 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-AYO page for operator, model, and routing details .

Mode-S 4B027E frequently asked

What is Mode-S code 4B027E?
4B027E is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-AYO.
Where is Mode-S 4B027E registered?
Mode-S code 4B027E is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B027E broadcasting right now?
Yes. Mode-S 4B027E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B027E, octal 22601176, decimal 4,915,838.
What flights does 4B027E operate?
Mode-S 4B027E has broadcast 20 distinct callsigns, including EZS45RN, EZS83LF, EZS78KW, EZS31QP, EZS75BQ.