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sensors Mode-S transponder

4B2811

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-PEN · PIPER PA-28-201T/235/236

Hex
4B2811
Octal
22624021
Decimal
4,925,457
Country
CH
Tail
HB-PEN
Type
P28B
No current signal · last broadcast 2d ago
Flights observed
70
Distinct callsigns
1
Country
CH
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 4B2811.

Country allocation

The ICAO 24-bit address 4B2811 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 1 distinct

Callsign Airline Flights Last seen
HBPEN - 70 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 HBPEN BRN → BRN Jul 15, 09:30 UTCJul 15, 09:55 UTC25m
2026-07-14 HBPEN BRN → BRN Jul 14, 09:00 UTCJul 14, 09:40 UTC40m
2026-07-11 HBPEN - Jul 11, 11:00 UTCJul 11, 11:45 UTC45m
2026-07-11 HBPEN - Jul 11, 09:00 UTCJul 11, 09:25 UTC25m
2026-07-06 HBPEN - Jul 6, 08:50 UTCJul 6, 11:15 UTC2h 25m
2026-07-04 HBPEN BRN → BRN Jul 4, 07:15 UTCJul 4, 08:05 UTC50m
2026-07-03 HBPEN BRN → BRN Jul 3, 10:50 UTCJul 3, 11:50 UTC1h 0m
2026-07-03 HBPEN - Jul 3, 09:50 UTCJul 3, 10:25 UTC35m
2026-07-03 HBPEN - Jul 3, 08:15 UTCJul 3, 08:50 UTC35m
2026-07-02 HBPEN - Jul 2, 12:45 UTCJul 2, 13:40 UTC55m
2026-07-02 HBPEN - Jul 2, 09:40 UTCJul 2, 10:15 UTC35m
2026-06-30 HBPEN - Jun 30, 10:20 UTCJun 30, 10:55 UTC35m
2026-06-30 HBPEN - Jun 30, 08:30 UTCJun 30, 09:10 UTC40m
2026-06-28 HBPEN - Jun 28, 08:39 UTCJun 28, 09:34 UTC55m
2026-06-27 HBPEN BRN → BRN Jun 27, 08:25 UTCJun 27, 09:24 UTC1h 0m
2026-06-26 HBPEN - Jun 26, 13:30 UTCJun 26, 14:05 UTC35m
2026-06-26 HBPEN - Jun 26, 10:35 UTCJun 26, 12:59 UTC2h 25m
2026-06-25 HBPEN - Jun 25, 07:49 UTCJun 25, 08:40 UTC50m
2026-06-24 HBPEN BRN → BRN Jun 24, 11:34 UTCJun 24, 15:05 UTC3h 30m
2026-06-23 HBPEN - Jun 23, 08:59 UTCJun 23, 10:24 UTC1h 25m
2026-06-23 HBPEN - Jun 23, 06:24 UTCJun 23, 07:55 UTC1h 30m
2026-06-22 HBPEN - Jun 22, 11:35 UTCJun 22, 11:44 UTC10m
2026-06-22 HBPEN - Jun 22, 09:14 UTCJun 22, 09:34 UTC20m
2026-06-20 HBPEN BRN → BRN Jun 20, 07:39 UTCJun 20, 08:34 UTC55m
2026-06-18 HBPEN - Jun 18, 13:00 UTCJun 18, 13:50 UTC50m
2026-06-18 HBPEN - Jun 18, 09:50 UTCJun 18, 10:25 UTC35m
2026-06-17 HBPEN - Jun 17, 07:25 UTCJun 17, 08:20 UTC55m
2026-06-14 HBPEN - Jun 14, 14:55 UTCJun 14, 16:30 UTC1h 35m
2026-06-14 HBPEN - Jun 14, 09:00 UTCJun 14, 11:35 UTC2h 35m
2026-06-11 HBPEN - Jun 11, 09:50 UTCJun 11, 11:55 UTC2h 5m
2026-06-07 HBPEN - Jun 7, 16:40 UTCJun 7, 17:00 UTC20m
2026-06-07 HBPEN - Jun 7, 11:20 UTCJun 7, 11:45 UTC25m
2026-06-06 HBPEN BRN → BRN Jun 6, 13:44 UTCJun 6, 14:30 UTC45m
2026-06-06 HBPEN - Jun 6, 12:14 UTCJun 6, 12:45 UTC30m
2026-06-05 HBPEN - Jun 5, 15:35 UTCJun 5, 16:05 UTC30m
2026-06-05 HBPEN - Jun 5, 13:50 UTCJun 5, 14:30 UTC40m
2026-06-05 HBPEN - Jun 5, 12:20 UTCJun 5, 13:10 UTC50m
2026-06-04 HBPEN BRN → BRN Jun 4, 08:50 UTCJun 4, 09:20 UTC30m
2026-06-03 HBPEN - Jun 3, 17:45 UTCJun 3, 18:05 UTC20m
2026-06-03 HBPEN - Jun 3, 14:30 UTCJun 3, 15:10 UTC40m
2026-05-25 HBPEN - May 25, 11:55 UTCMay 25, 12:10 UTC15m
2026-05-25 HBPEN - May 25, 09:00 UTCMay 25, 09:45 UTC45m
2026-05-24 HBPEN BRN → BRN May 24, 16:30 UTCMay 24, 17:05 UTC35m
2026-05-22 HBPEN - May 22, 11:55 UTCMay 22, 13:45 UTC1h 50m
2026-05-22 HBPEN - May 22, 10:35 UTCMay 22, 10:50 UTC15m
2026-05-22 HBPEN - May 22, 08:10 UTCMay 22, 09:45 UTC1h 35m
2026-05-22 HBPEN - May 22, 07:00 UTCMay 22, 07:15 UTC15m
2026-05-21 HBPEN - May 21, 12:15 UTCMay 21, 13:20 UTC1h 5m
2026-05-21 HBPEN - May 21, 09:15 UTCMay 21, 10:10 UTC55m
2026-05-17 HBPEN - May 17, 12:25 UTCMay 17, 12:45 UTC20m

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

Mode-S 4B2811 frequently asked

What is Mode-S code 4B2811?
4B2811 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-PEN.
Where is Mode-S 4B2811 registered?
Mode-S code 4B2811 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B2811 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B2811, octal 22624021, decimal 4,925,457.
What flights does 4B2811 operate?
Mode-S 4B2811 has broadcast 1 distinct callsign, including HBPEN.