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sensors Mode-S transponder

ADF3F3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9989E · CESSNA 182 Skylane · operated by T CRAFT AERO CLUB INC

Hex
ADF3F3
Octal
53371763
Decimal
11,400,179
Country
US
Tail
N9989E
Type
C182
No current signal · last broadcast 7d ago
Flights observed
89
Distinct callsigns
1
Country
US
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S ADF3F3.

Country allocation

The ICAO 24-bit address ADF3F3 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
N9989E - 89 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N9989E - Jul 26, 15:45 UTCJul 26, 16:20 UTC35m
2026-07-23 N9989E - Jul 23, 13:25 UTCJul 23, 13:55 UTC30m
2026-07-22 N9989E - Jul 22, 01:30 UTCJul 22, 01:55 UTC25m
2026-07-21 N9989E - Jul 21, 23:05 UTCJul 21, 23:50 UTC45m
2026-07-21 N9989E - Jul 21, 16:30 UTCJul 21, 17:25 UTC55m
2026-07-21 N9989E - Jul 21, 15:00 UTCJul 21, 15:30 UTC30m
2026-07-20 N9989E - Jul 20, 15:00 UTCJul 20, 15:25 UTC25m
2026-07-19 N9989E - Jul 19, 20:00 UTCJul 19, 20:25 UTC25m
2026-07-19 N9989E - Jul 19, 15:10 UTCJul 19, 15:50 UTC40m
2026-07-17 N9989E - Jul 17, 20:40 UTCJul 17, 21:20 UTC40m
2026-07-17 N9989E - Jul 17, 18:00 UTCJul 17, 18:10 UTC10m
2026-07-15 N9989E - Jul 15, 17:40 UTCJul 15, 17:50 UTC10m
2026-07-15 N9989E - Jul 15, 13:45 UTCJul 15, 14:20 UTC35m
2026-07-14 N9989E - Jul 14, 14:35 UTCJul 14, 14:50 UTC15m
2026-07-14 N9989E - Jul 14, 11:50 UTCJul 14, 12:15 UTC25m
2026-07-12 N9989E - Jul 12, 16:01 UTCJul 12, 16:25 UTC25m
2026-07-11 N9989E - Jul 11, 00:10 UTCJul 11, 00:30 UTC20m
2026-07-10 N9989E - Jul 10, 13:40 UTCJul 10, 14:10 UTC30m
2026-07-10 N9989E - Jul 10, 12:35 UTCJul 10, 13:00 UTC25m
2026-07-08 N9989E - Jul 8, 16:40 UTCJul 8, 17:00 UTC20m
2026-07-08 N9989E - Jul 8, 14:05 UTCJul 8, 14:30 UTC25m
2026-07-06 N9989E - Jul 6, 16:40 UTCJul 6, 17:00 UTC20m
2026-07-06 N9989E - Jul 6, 15:35 UTCJul 6, 15:55 UTC20m
2026-07-06 N9989E - Jul 6, 02:05 UTCJul 6, 02:20 UTC15m
2026-07-04 N9989E - Jul 4, 17:20 UTCJul 4, 17:40 UTC20m
2026-07-02 N9989E - Jul 2, 18:05 UTCJul 2, 18:25 UTC20m
2026-07-02 N9989E - Jul 2, 14:25 UTCJul 2, 14:50 UTC25m
2026-07-01 N9989E - Jul 1, 18:55 UTCJul 1, 19:50 UTC55m
2026-06-30 N9989E - Jun 30, 14:45 UTCJun 30, 15:50 UTC1h 5m
2026-06-28 N9989E - Jun 28, 19:20 UTCJun 28, 21:10 UTC1h 50m
2026-06-23 N9989E - Jun 23, 17:15 UTCJun 23, 17:25 UTC10m
2026-06-22 N9989E - Jun 22, 13:59 UTCJun 22, 14:14 UTC15m
2026-06-21 N9989E - Jun 21, 16:34 UTCJun 21, 16:44 UTC10m
2026-06-21 N9989E - Jun 21, 13:59 UTCJun 21, 14:19 UTC20m
2026-06-17 N9989E - Jun 17, 18:05 UTCJun 17, 19:05 UTC1h 0m
2026-06-17 N9989E - Jun 17, 16:30 UTCJun 17, 17:05 UTC35m
2026-06-17 N9989E - Jun 17, 00:05 UTCJun 17, 00:55 UTC50m
2026-06-14 N9989E - Jun 14, 20:40 UTCJun 14, 21:00 UTC20m
2026-06-14 N9989E - Jun 14, 19:15 UTCJun 14, 19:35 UTC20m
2026-06-13 N9989E - Jun 13, 17:20 UTCJun 13, 17:35 UTC15m
2026-06-13 N9989E - Jun 13, 15:45 UTCJun 13, 16:05 UTC20m
2026-06-13 N9989E - Jun 13, 08:30 UTCJun 13, 09:05 UTC35m
2026-06-13 N9989E - Jun 13, 02:50 UTCJun 13, 03:20 UTC30m
2026-06-11 N9989E - Jun 11, 17:40 UTCJun 11, 18:00 UTC20m
2026-06-11 N9989E - Jun 11, 14:05 UTCJun 11, 14:30 UTC25m
2026-06-08 N9989E - Jun 8, 15:20 UTCJun 8, 16:55 UTC1h 35m
2026-06-06 N9989E - Jun 6, 20:05 UTCJun 6, 21:25 UTC1h 20m
2026-06-06 N9989E - Jun 6, 15:54 UTCJun 6, 16:14 UTC20m
2026-06-04 N9989E - Jun 4, 13:35 UTCJun 4, 14:00 UTC25m
2026-05-31 N9989E - May 31, 17:30 UTCMay 31, 17:55 UTC25m

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 N9989E page for operator, model, and routing details .

Mode-S ADF3F3 frequently asked

What is Mode-S code ADF3F3?
ADF3F3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9989E.
Where is Mode-S ADF3F3 registered?
Mode-S code ADF3F3 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 ADF3F3 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADF3F3, octal 53371763, decimal 11,400,179.
What flights does ADF3F3 operate?
Mode-S ADF3F3 has broadcast 1 distinct callsign, including N9989E.