Apparatus

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sensors Mode-S transponder

A8ADDA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N65872 · CESSNA 172 Skyhawk · operated by CHANNEL ISLANDS AVIATION INC

Hex
A8ADDA
Octal
52126732
Decimal
11,054,554
Country
US
Tail
N65872
Type
C172
No current signal · last broadcast 1d ago
Flights observed
53
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A8ADDA.

Country allocation

The ICAO 24-bit address A8ADDA 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
N65872 - 53 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-11 N65872 - Jun 11, 20:15 UTCJun 11, 21:25 UTC1h 10m
2026-06-11 N65872 - Jun 11, 19:15 UTCJun 11, 20:05 UTC50m
2026-06-11 N65872 - Jun 11, 16:40 UTCJun 11, 18:10 UTC1h 30m
2026-06-11 N65872 - Jun 11, 15:40 UTCJun 11, 16:30 UTC50m
2026-06-08 N65872 - Jun 8, 01:05 UTCJun 8, 02:10 UTC1h 5m
2026-06-08 N65872 - Jun 8, 00:10 UTCJun 8, 01:00 UTC50m
2026-06-05 N65872 - Jun 5, 00:10 UTCJun 5, 01:05 UTC55m
2026-06-04 N65872 - Jun 4, 23:15 UTCJun 5, 00:00 UTC45m
2026-06-01 N65872 - Jun 1, 16:30 UTCJun 1, 17:25 UTC55m
2026-06-01 N65872 - Jun 1, 15:35 UTCJun 1, 16:25 UTC50m
2026-05-31 N65872 - May 31, 23:40 UTCJun 1, 00:30 UTC50m
2026-05-31 N65872 - May 31, 22:35 UTCMay 31, 23:25 UTC50m
2026-05-30 N65872 - May 30, 23:30 UTCMay 31, 00:20 UTC50m
2026-05-05 N65872 - May 5, 00:00 UTCMay 5, 00:50 UTC50m
2026-05-04 N65872 - May 4, 21:55 UTCMay 4, 22:55 UTC1h 0m
2026-05-04 N65872 - May 4, 20:00 UTCMay 4, 20:50 UTC50m
2026-05-04 N65872 - May 4, 17:50 UTCMay 4, 18:55 UTC1h 6m
2026-05-03 N65872 - May 3, 23:45 UTCMay 4, 00:05 UTC20m
2026-05-03 N65872 - May 3, 19:50 UTCMay 3, 21:05 UTC1h 15m
2026-05-02 N65872 - May 2, 22:15 UTCMay 2, 22:50 UTC35m
2026-05-02 N65872 - May 2, 01:05 UTCMay 2, 02:00 UTC55m
2026-05-01 N65872 - May 1, 19:55 UTCMay 1, 20:35 UTC40m
2026-04-30 N65872 - Apr 30, 21:15 UTCApr 30, 21:55 UTC40m
2026-04-30 N65872 - Apr 30, 18:05 UTCApr 30, 18:50 UTC45m
2026-04-30 N65872 - Apr 30, 00:50 UTCApr 30, 01:15 UTC25m
2026-04-29 N65872 - Apr 29, 23:10 UTCApr 29, 23:45 UTC35m
2026-04-29 N65872 - Apr 29, 20:00 UTCApr 29, 20:55 UTC55m
2026-04-29 N65872 - Apr 29, 16:30 UTCApr 29, 17:01 UTC30m
2026-04-29 N65872 - Apr 29, 04:55 UTCApr 29, 05:25 UTC30m
2026-04-28 N65872 - Apr 28, 22:15 UTCApr 28, 22:55 UTC40m
2026-04-28 N65872 - Apr 28, 15:50 UTCApr 28, 16:45 UTC55m
2026-04-27 N65872 - Apr 27, 23:15 UTCApr 27, 23:55 UTC40m
2026-04-27 N65872 - Apr 27, 20:00 UTCApr 27, 20:50 UTC50m
2026-04-27 N65872 - Apr 27, 16:50 UTCApr 27, 17:55 UTC1h 5m
2026-04-26 N65872 - Apr 26, 17:55 UTCApr 26, 18:50 UTC55m
2026-04-26 N65872 - Apr 26, 00:10 UTCApr 26, 00:35 UTC25m
2026-04-25 N65872 - Apr 25, 21:20 UTCApr 25, 21:45 UTC25m
2026-04-25 N65872 - Apr 25, 18:00 UTCApr 25, 18:55 UTC55m
2026-04-25 N65872 - Apr 25, 01:00 UTCApr 25, 01:40 UTC40m
2026-04-24 N65872 - Apr 24, 20:50 UTCApr 24, 21:30 UTC40m
2026-04-24 N65872 - Apr 24, 17:10 UTCApr 24, 18:30 UTC1h 20m
2026-04-23 N65872 - Apr 23, 19:30 UTCApr 23, 19:45 UTC15m
2026-04-22 N65872 - Apr 22, 21:05 UTCApr 22, 21:15 UTC10m
2026-04-20 N65872 - Apr 20, 15:40 UTCApr 20, 16:00 UTC20m
2026-04-19 N65872 - Apr 19, 23:55 UTCApr 20, 00:40 UTC45m
2026-04-19 N65872 - Apr 19, 23:05 UTCApr 19, 23:45 UTC40m
2026-04-19 N65872 - Apr 19, 15:10 UTCApr 19, 15:45 UTC35m
2026-04-18 N65872 - Apr 18, 15:45 UTCApr 18, 17:20 UTC1h 35m
2026-04-17 N65872 - Apr 17, 15:50 UTCApr 17, 16:35 UTC45m
2026-04-16 N65872 - Apr 16, 01:10 UTCApr 16, 01:40 UTC30m

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 N65872 page for operator, model, and routing details .

Mode-S A8ADDA frequently asked

What is Mode-S code A8ADDA?
A8ADDA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N65872.
Where is Mode-S A8ADDA registered?
Mode-S code A8ADDA 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 A8ADDA broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8ADDA, octal 52126732, decimal 11,054,554.
What flights does A8ADDA operate?
Mode-S A8ADDA has broadcast 1 distinct callsign, including N65872.