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sensors Mode-S transponder

AADCDF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N79975 · CESSNA 172 Skyhawk · operated by BOYLE BRYAN D

Hex
AADCDF
Octal
52556337
Decimal
11,197,663
Country
US
Tail
N79975
Type
C172
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
93
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S AADCDF.

Country allocation

The ICAO 24-bit address AADCDF 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
N79975 - 93 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N79975 - Jul 26, 20:45 UTCJul 26, 21:45 UTC1h 0m
2026-07-26 N79975 - Jul 26, 20:00 UTCJul 26, 20:10 UTC10m
2026-07-26 N79975 - Jul 26, 12:40 UTCJul 26, 14:15 UTC1h 35m
2026-07-25 N79975 - Jul 25, 16:05 UTCJul 25, 19:55 UTC3h 50m
2026-07-25 N79975 - Jul 25, 12:10 UTCJul 25, 14:30 UTC2h 20m
2026-07-24 N79975 - Jul 24, 15:55 UTCJul 24, 19:00 UTC3h 5m
2026-07-24 N79975 - Jul 24, 11:20 UTCJul 24, 14:40 UTC3h 20m
2026-07-19 N79975 - Jul 19, 23:05 UTCJul 20, 00:55 UTC1h 50m
2026-07-15 N79975 - Jul 15, 12:15 UTCJul 15, 13:55 UTC1h 40m
2026-07-15 N79975 - Jul 15, 10:00 UTCJul 15, 11:15 UTC1h 15m
2026-07-12 N79975 - Jul 12, 21:45 UTCJul 12, 23:15 UTC1h 30m
2026-07-12 N79975 - Jul 12, 17:55 UTCJul 12, 19:20 UTC1h 25m
2026-07-12 N79975 - Jul 12, 15:25 UTCJul 12, 16:20 UTC55m
2026-07-11 N79975 - Jul 11, 13:15 UTCJul 11, 14:05 UTC50m
2026-07-10 N79975 - Jul 10, 15:50 UTCJul 10, 17:05 UTC1h 15m
2026-07-10 N79975 - Jul 10, 13:45 UTCJul 10, 14:45 UTC1h 0m
2026-07-08 N79975 - Jul 8, 20:05 UTCJul 8, 22:20 UTC2h 15m
2026-07-08 N79975 - Jul 8, 16:20 UTCJul 8, 18:25 UTC2h 5m
2026-07-07 N79975 - Jul 7, 18:05 UTCJul 7, 20:10 UTC2h 5m
2026-07-05 N79975 - Jul 5, 15:20 UTCJul 5, 16:15 UTC55m
2026-07-03 N79975 - Jul 3, 13:05 UTCJul 3, 13:50 UTC45m
2026-07-02 N79975 - Jul 2, 00:40 UTCJul 2, 01:05 UTC25m
2026-07-01 N79975 - Jul 1, 18:10 UTCJul 1, 18:35 UTC25m
2026-06-28 N79975 - Jun 28, 22:39 UTCJun 29, 00:34 UTC1h 55m
2026-06-28 N79975 - Jun 28, 17:04 UTCJun 28, 17:50 UTC45m
2026-06-27 N79975 - Jun 27, 19:39 UTCJun 27, 20:19 UTC40m
2026-06-27 N79975 - Jun 27, 18:35 UTCJun 27, 19:34 UTC1h 0m
2026-06-27 N79975 PCT → PCT Jun 27, 12:09 UTCJun 27, 14:14 UTC2h 5m
2026-06-26 N79975 - Jun 26, 17:19 UTCJun 26, 18:34 UTC1h 15m
2026-06-26 N79975 PCT → PCT Jun 26, 13:24 UTCJun 26, 13:40 UTC15m
2026-06-25 N79975 PCT → PCT Jun 25, 21:59 UTCJun 26, 00:05 UTC2h 5m
2026-06-24 N79975 - Jun 24, 21:34 UTCJun 24, 23:45 UTC2h 10m
2026-06-22 N79975 - Jun 22, 14:49 UTCJun 22, 15:45 UTC55m
2026-06-22 N79975 - Jun 22, 01:10 UTCJun 22, 02:00 UTC50m
2026-06-22 N79975 - Jun 22, 00:04 UTCJun 22, 00:20 UTC15m
2026-06-19 N79975 - Jun 19, 22:19 UTCJun 19, 23:54 UTC1h 35m
2026-06-19 N79975 - Jun 19, 20:14 UTCJun 19, 21:39 UTC1h 25m
2026-06-17 N79975 - Jun 17, 22:25 UTCJun 18, 00:05 UTC1h 40m
2026-06-16 N79975 PCT → PCT Jun 16, 22:45 UTCJun 16, 23:50 UTC1h 5m
2026-06-16 N79975 - Jun 16, 13:55 UTCJun 16, 15:55 UTC2h 0m
2026-06-14 N79975 - Jun 14, 14:10 UTCJun 14, 16:40 UTC2h 30m
2026-06-13 N79975 - Jun 13, 12:20 UTCJun 13, 14:25 UTC2h 5m
2026-06-12 N79975 - Jun 12, 16:25 UTCJun 12, 17:55 UTC1h 30m
2026-06-12 N79975 - Jun 12, 13:40 UTCJun 12, 15:20 UTC1h 40m
2026-06-08 N79975 PCT → PCT Jun 8, 23:40 UTCJun 9, 00:50 UTC1h 10m
2026-06-05 N79975 - Jun 5, 16:05 UTCJun 5, 18:50 UTC2h 45m
2026-06-05 N79975 - Jun 5, 11:10 UTCJun 5, 13:50 UTC2h 40m
2026-06-02 N79975 - Jun 2, 17:00 UTCJun 2, 19:05 UTC2h 5m
2026-06-02 N79975 - Jun 2, 15:10 UTCJun 2, 15:30 UTC20m
2026-06-02 N79975 PCT → MVY Jun 2, 11:55 UTCJun 2, 14:10 UTC2h 15m

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 N79975 page for operator, model, and routing details .

Mode-S AADCDF frequently asked

What is Mode-S code AADCDF?
AADCDF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N79975.
Where is Mode-S AADCDF registered?
Mode-S code AADCDF 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 AADCDF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AADCDF, octal 52556337, decimal 11,197,663.
What flights does AADCDF operate?
Mode-S AADCDF has broadcast 1 distinct callsign, including N79975.