Apparatus

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sensors Mode-S transponder

A4B680

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N40200 · PIPER PA-23 · operated by DELAWARE TRUST CO TRUSTEE

Hex
A4B680
Octal
51133200
Decimal
10,794,624
Country
US
Tail
N40200
Type
PA23
No current signal · last broadcast Jul 25, 05:15 UTC
Flights observed
50
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 05:15 UTC

Last known position

Most recent position reported by Mode-S A4B680.

Country allocation

The ICAO 24-bit address A4B680 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
N40200 - 50 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N40200 MCC → MCC Jul 25, 03:45 UTCJul 25, 05:15 UTC1h 30m
2026-07-24 N40200 - Jul 24, 16:30 UTCJul 24, 16:45 UTC15m
2026-07-24 N40200 MCC → MCC Jul 24, 03:40 UTCJul 24, 04:30 UTC50m
2026-07-23 N40200 - Jul 23, 05:15 UTCJul 23, 05:25 UTC10m
2026-07-23 N40200 MCC → MCC Jul 23, 03:50 UTCJul 23, 05:10 UTC1h 20m
2026-07-21 N40200 MCC → MCC Jul 21, 03:10 UTCJul 21, 05:00 UTC1h 50m
2026-07-20 N40200 MCC → MCC Jul 20, 03:45 UTCJul 20, 04:45 UTC1h 0m
2026-07-19 N40200 MCC → MCC Jul 19, 03:45 UTCJul 19, 04:35 UTC50m
2026-07-18 N40200 MCC → MCC Jul 18, 03:25 UTCJul 18, 05:45 UTC2h 20m
2026-07-17 N40200 MCC → MCC Jul 17, 14:44 UTCJul 17, 15:15 UTC30m
2026-07-16 N40200 - Jul 16, 05:25 UTCJul 16, 05:35 UTC10m
2026-07-16 N40200 MCC → MCC Jul 16, 03:40 UTCJul 16, 05:20 UTC1h 40m
2026-07-15 N40200 MCC → MCC Jul 15, 19:20 UTCJul 15, 20:00 UTC40m
2026-07-15 N40200 MCC → MCC Jul 15, 03:00 UTCJul 15, 05:05 UTC2h 5m
2026-07-13 N40200 MCC → MCC Jul 13, 03:25 UTCJul 13, 04:55 UTC1h 30m
2026-07-12 N40200 MCC → MCC Jul 12, 03:35 UTCJul 12, 04:55 UTC1h 20m
2026-07-11 N40200 MCC → MCC Jul 11, 03:45 UTCJul 11, 04:35 UTC50m
2026-07-10 N40200 MCC → MCC Jul 10, 04:00 UTCJul 10, 04:50 UTC50m
2026-07-09 N40200 MCC → MCC Jul 9, 03:55 UTCJul 9, 05:30 UTC1h 35m
2026-07-04 N40200 MCC → MCC Jul 4, 03:20 UTCJul 4, 05:35 UTC2h 15m
2026-07-03 N40200 MCC → MCC Jul 3, 05:25 UTCJul 3, 06:45 UTC1h 20m
2026-07-03 N40200 MCC → MCC Jul 3, 03:45 UTCJul 3, 04:30 UTC45m
2026-07-02 N40200 MCC → MCC Jul 2, 03:15 UTCJul 2, 05:45 UTC2h 30m
2026-06-29 N40200 MCC → MCC Jun 29, 18:05 UTCJun 29, 18:25 UTC20m
2026-06-25 N40200 MCC → MCC Jun 25, 03:29 UTCJun 25, 05:25 UTC1h 55m
2026-06-23 N40200 MCC → MCC Jun 23, 04:00 UTCJun 23, 04:45 UTC45m
2026-06-22 N40200 MCC → MCC Jun 22, 21:35 UTCJun 22, 21:59 UTC25m
2026-06-21 N40200 MCC → MCC Jun 21, 20:09 UTCJun 21, 21:19 UTC1h 10m
2026-06-20 N40200 MCC → MCC Jun 20, 02:59 UTCJun 20, 04:14 UTC1h 15m
2026-06-16 N40200 MCC → MCC Jun 16, 03:20 UTCJun 16, 05:40 UTC2h 20m
2026-06-15 N40200 MCC → MCC Jun 15, 19:14 UTCJun 15, 19:30 UTC15m
2026-06-15 N40200 MCC → MCC Jun 15, 17:34 UTCJun 15, 18:20 UTC45m
2026-06-13 N40200 MCC → MCC Jun 13, 03:35 UTCJun 13, 05:00 UTC1h 25m
2026-06-13 N40200 MCC → MCC Jun 13, 02:25 UTCJun 13, 02:30 UTC5m
2026-06-11 N40200 MCC → MCC Jun 11, 03:45 UTCJun 11, 04:05 UTC20m
2026-06-10 N40200 - Jun 10, 19:00 UTCJun 10, 19:25 UTC25m
2026-06-07 N40200 MCC → MCC Jun 7, 23:40 UTCJun 8, 01:00 UTC1h 20m
2026-06-05 N40200 MCC → MCC Jun 5, 18:30 UTCJun 5, 18:45 UTC15m
2026-06-03 N40200 MCC → MCC Jun 3, 22:10 UTCJun 3, 22:25 UTC15m
2026-06-02 N40200 - Jun 2, 20:00 UTCJun 2, 21:05 UTC1h 5m
2026-06-01 N40200 MCC → MCC Jun 1, 18:40 UTCJun 1, 19:00 UTC20m
2026-06-01 N40200 MCC → MCC Jun 1, 16:00 UTCJun 1, 17:45 UTC1h 45m
2026-05-31 N40200 MCC → MCC May 31, 21:05 UTCMay 31, 21:35 UTC30m
2026-05-30 N40200 MCC → MCC May 30, 20:05 UTCMay 30, 20:50 UTC45m
2026-05-30 N40200 MCC → MCC May 30, 18:40 UTCMay 30, 19:05 UTC25m
2026-05-27 N40200 MCC → MCC May 27, 21:45 UTCMay 27, 22:10 UTC25m
2026-05-20 N40200 MCC → MCC May 20, 22:30 UTCMay 20, 22:50 UTC20m
2026-05-19 N40200 - May 19, 17:50 UTCMay 19, 18:30 UTC40m
2026-05-19 N40200 - May 19, 15:15 UTCMay 19, 15:45 UTC30m
2026-05-14 N40200 - May 14, 20:00 UTCMay 14, 20:35 UTC35m

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 N40200 page for operator, model, and routing details .

Mode-S A4B680 frequently asked

What is Mode-S code A4B680?
A4B680 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N40200.
Where is Mode-S A4B680 registered?
Mode-S code A4B680 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A4B680 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 05:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4B680, octal 51133200, decimal 10,794,624.
What flights does A4B680 operate?
Mode-S A4B680 has broadcast 1 distinct callsign, including N40200.