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sensors Mode-S transponder

ADEF3D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N99715 · CESSNA 172 Skyhawk · operated by N99715 LLC

Hex
ADEF3D
Octal
53367475
Decimal
11,398,973
Country
US
Tail
N99715
Type
C172
No current signal · last broadcast 16h ago
Flights observed
149
Distinct callsigns
1
Country
US
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S ADEF3D.

Country allocation

The ICAO 24-bit address ADEF3D 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
N99715 - 149 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N99715 PWK → PWK Jul 13, 21:25 UTCJul 13, 22:15 UTC50m
2026-07-13 N99715 - Jul 13, 18:05 UTCJul 13, 18:25 UTC20m
2026-07-13 N99715 - Jul 13, 16:25 UTCJul 13, 16:40 UTC15m
2026-07-13 N99715 - Jul 13, 15:35 UTCJul 13, 15:50 UTC15m
2026-07-13 N99715 - Jul 13, 01:10 UTCJul 13, 01:25 UTC15m
2026-07-12 N99715 PWK → ENW Jul 12, 21:50 UTCJul 12, 22:35 UTC45m
2026-07-12 N99715 PWK → PWK Jul 12, 19:01 UTCJul 12, 19:40 UTC40m
2026-07-12 N99715 - Jul 12, 11:55 UTCJul 12, 12:40 UTC45m
2026-07-11 N99715 - Jul 11, 15:15 UTCJul 11, 15:30 UTC15m
2026-07-11 N99715 - Jul 11, 13:20 UTCJul 11, 14:30 UTC1h 10m
2026-07-11 N99715 PWK → PWK Jul 11, 00:20 UTCJul 11, 01:25 UTC1h 5m
2026-07-10 N99715 PWK → PWK Jul 10, 18:00 UTCJul 10, 19:05 UTC1h 5m
2026-07-10 N99715 PWK → PWK Jul 10, 16:00 UTCJul 10, 17:05 UTC1h 5m
2026-07-09 N99715 PWK → PWK Jul 9, 23:35 UTCJul 10, 00:20 UTC45m
2026-07-08 N99715 - Jul 8, 00:40 UTCJul 8, 01:50 UTC1h 10m
2026-07-07 N99715 - Jul 7, 21:00 UTCJul 7, 22:20 UTC1h 20m
2026-07-07 N99715 - Jul 7, 18:35 UTCJul 7, 19:00 UTC25m
2026-07-07 N99715 - Jul 7, 14:40 UTCJul 7, 15:45 UTC1h 5m
2026-07-07 N99715 - Jul 7, 01:15 UTCJul 7, 01:50 UTC35m
2026-07-06 N99715 - Jul 6, 18:00 UTCJul 6, 18:45 UTC45m
2026-07-06 N99715 PWK → PWK Jul 6, 16:20 UTCJul 6, 16:45 UTC25m
2026-07-06 N99715 PWK → PWK Jul 6, 12:55 UTCJul 6, 13:05 UTC10m
2026-07-04 N99715 - Jul 4, 17:50 UTCJul 4, 18:05 UTC15m
2026-07-04 N99715 - Jul 4, 17:00 UTCJul 4, 17:15 UTC15m
2026-07-04 N99715 - Jul 4, 15:35 UTCJul 4, 16:10 UTC35m
2026-07-03 N99715 PWK → PWK Jul 3, 21:15 UTCJul 3, 22:20 UTC1h 5m
2026-07-02 N99715 - Jul 2, 17:40 UTCJul 2, 18:55 UTC1h 15m
2026-06-30 N99715 PWK → PWK Jun 30, 22:10 UTCJun 30, 22:20 UTC10m
2026-06-30 N99715 PWK → PWK Jun 30, 19:25 UTCJun 30, 20:40 UTC1h 15m
2026-06-30 N99715 - Jun 30, 16:35 UTCJun 30, 16:50 UTC15m
2026-06-30 N99715 - Jun 30, 15:35 UTCJun 30, 15:55 UTC20m
2026-06-29 N99715 PWK → PWK Jun 29, 16:50 UTCJun 29, 17:34 UTC45m
2026-06-29 N99715 - Jun 29, 05:54 UTCJun 29, 06:59 UTC1h 5m
2026-06-28 N99715 PWK → PWK Jun 28, 18:44 UTCJun 28, 20:04 UTC1h 20m
2026-06-28 N99715 - Jun 28, 16:09 UTCJun 28, 16:49 UTC40m
2026-06-26 N99715 PWK → PWK Jun 26, 20:40 UTCJun 26, 21:39 UTC1h 0m
2026-06-26 N99715 PWK → PWK Jun 26, 14:55 UTCJun 26, 16:20 UTC1h 25m
2026-06-26 N99715 - Jun 26, 12:44 UTCJun 26, 13:49 UTC1h 5m
2026-06-25 N99715 - Jun 25, 19:49 UTCJun 25, 20:30 UTC40m
2026-06-25 N99715 - Jun 25, 18:55 UTCJun 25, 19:09 UTC15m
2026-06-25 N99715 PWK → PWK Jun 25, 16:29 UTCJun 25, 17:20 UTC50m
2026-06-25 N99715 PWK → PWK Jun 25, 13:40 UTCJun 25, 14:44 UTC1h 5m
2026-06-23 N99715 - Jun 23, 22:25 UTCJun 23, 23:14 UTC50m
2026-06-23 N99715 - Jun 23, 18:34 UTCJun 23, 19:59 UTC1h 25m
2026-06-23 N99715 - Jun 23, 15:44 UTCJun 23, 16:14 UTC30m
2026-06-23 N99715 - Jun 23, 14:04 UTCJun 23, 14:39 UTC35m
2026-06-22 N99715 PWK → PWK Jun 22, 15:59 UTCJun 22, 16:20 UTC20m
2026-06-19 N99715 PWK → PWK Jun 19, 22:24 UTCJun 19, 23:39 UTC1h 15m
2026-06-19 N99715 - Jun 19, 20:29 UTCJun 19, 21:04 UTC35m
2026-06-19 N99715 PWK → PWK Jun 19, 12:44 UTCJun 19, 13:44 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 N99715 page for operator, model, and routing details .

Mode-S ADEF3D frequently asked

What is Mode-S code ADEF3D?
ADEF3D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N99715.
Where is Mode-S ADEF3D registered?
Mode-S code ADEF3D 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 ADEF3D broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADEF3D, octal 53367475, decimal 11,398,973.
What flights does ADEF3D operate?
Mode-S ADEF3D has broadcast 1 distinct callsign, including N99715.