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sensors Mode-S transponder

ADF49C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N999FN · EPIC AIRCRAFT Epic LT · operated by WING AIR LLC

Hex
ADF49C
Octal
53372234
Decimal
11,400,348
Country
US
Tail
N999FN
Type
EPIC
No current signal · last broadcast 1h ago
Flights observed
137
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ADF49C.

Country allocation

The ICAO 24-bit address ADF49C 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
N999FN - 137 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N999FN - Jul 17, 23:55 UTCJul 18, 01:00 UTC1h 5m
2026-07-17 N999FN - Jul 17, 22:35 UTCJul 17, 23:14 UTC40m
2026-07-17 N999FN - Jul 17, 18:25 UTCJul 17, 19:30 UTC1h 5m
2026-07-17 N999FN - Jul 17, 15:44 UTCJul 17, 17:30 UTC1h 45m
2026-07-13 N999FN - Jul 13, 22:55 UTCJul 14, 01:15 UTC2h 20m
2026-07-13 N999FN - Jul 13, 19:00 UTCJul 13, 20:35 UTC1h 35m
2026-07-13 N999FN - Jul 13, 00:55 UTCJul 13, 01:10 UTC15m
2026-07-12 N999FN - Jul 12, 23:55 UTCJul 13, 00:10 UTC15m
2026-07-12 N999FN - Jul 12, 20:40 UTCJul 12, 21:00 UTC20m
2026-07-12 N999FN LAS → PAO Jul 12, 18:35 UTCJul 12, 20:01 UTC1h 25m
2026-07-12 N999FN - Jul 12, 16:35 UTCJul 12, 17:05 UTC30m
2026-07-12 N999FN - Jul 12, 15:20 UTCJul 12, 16:05 UTC45m
2026-07-12 N999FN - Jul 12, 14:15 UTCJul 12, 14:30 UTC15m
2026-07-10 N999FN - Jul 10, 16:00 UTCJul 10, 18:10 UTC2h 10m
2026-07-10 N999FN - Jul 10, 12:45 UTCJul 10, 14:25 UTC1h 40m
2026-07-09 N999FN OAK → CCR Jul 9, 23:10 UTCJul 9, 23:20 UTC10m
2026-07-09 N999FN - Jul 9, 17:40 UTCJul 9, 18:15 UTC35m
2026-07-09 N999FN - Jul 9, 15:35 UTCJul 9, 16:05 UTC30m
2026-07-09 N999FN - Jul 9, 00:20 UTCJul 9, 00:35 UTC15m
2026-07-08 N999FN CCR → SFO Jul 8, 22:15 UTCJul 8, 22:40 UTC25m
2026-07-08 N999FN - Jul 8, 00:05 UTCJul 8, 00:40 UTC35m
2026-07-07 N999FN - Jul 7, 22:15 UTCJul 7, 22:45 UTC30m
2026-07-07 N999FN HWD → APC Jul 7, 15:45 UTCJul 7, 16:05 UTC20m
2026-07-07 N999FN BUR → HWD Jul 7, 13:35 UTCJul 7, 14:45 UTC1h 10m
2026-07-07 N999FN SQL → BUR Jul 7, 00:00 UTCJul 7, 01:10 UTC1h 10m
2026-07-06 N999FN - Jul 6, 15:55 UTCJul 6, 16:45 UTC50m
2026-07-06 N999FN - Jul 6, 13:40 UTCJul 6, 14:05 UTC25m
2026-07-05 N999FN - Jul 5, 07:20 UTCJul 5, 07:30 UTC10m
2026-07-05 N999FN SMO → OAK Jul 5, 05:40 UTCJul 5, 06:50 UTC1h 10m
2026-07-04 N999FN OAK → SMO Jul 4, 22:00 UTCJul 4, 23:10 UTC1h 10m
2026-07-04 N999FN CCR → OAK Jul 4, 19:55 UTCJul 4, 20:05 UTC10m
2026-07-03 N999FN HSH → CCR Jul 3, 04:40 UTCJul 3, 06:05 UTC1h 25m
2026-07-03 N999FN - Jul 3, 03:10 UTCJul 3, 03:25 UTC15m
2026-07-03 N999FN - Jul 3, 02:00 UTCJul 3, 02:40 UTC40m
2026-07-02 N999FN - Jul 2, 03:45 UTCJul 2, 04:20 UTC35m
2026-07-02 N999FN - Jul 2, 01:25 UTCJul 2, 01:55 UTC30m
2026-07-01 N999FN - Jul 1, 18:55 UTCJul 1, 19:05 UTC10m
2026-07-01 N999FN - Jul 1, 15:15 UTCJul 1, 15:55 UTC40m
2026-06-29 N999FN - Jun 29, 01:55 UTCJun 29, 02:25 UTC30m
2026-06-27 N999FN - Jun 27, 16:04 UTCJun 27, 16:30 UTC25m
2026-06-26 N999FN - Jun 26, 04:24 UTCJun 26, 04:34 UTC10m
2026-06-26 N999FN SMO → OAK Jun 26, 02:44 UTCJun 26, 04:00 UTC1h 15m
2026-06-26 N999FN CCR → SMO Jun 26, 00:20 UTCJun 26, 01:29 UTC1h 10m
2026-06-25 N999FN - Jun 25, 19:34 UTCJun 25, 20:14 UTC40m
2026-06-24 N999FN - Jun 24, 16:50 UTCJun 24, 17:29 UTC40m
2026-06-20 N999FN - Jun 20, 02:24 UTCJun 20, 02:44 UTC20m
2026-06-20 N999FN BUR → SQL Jun 20, 00:54 UTCJun 20, 02:04 UTC1h 10m
2026-06-19 N999FN SQL → BUR Jun 19, 17:19 UTCJun 19, 18:34 UTC1h 15m
2026-06-19 N999FN CCR → SQL Jun 19, 15:39 UTCJun 19, 16:25 UTC45m
2026-06-19 N999FN - Jun 19, 03:05 UTCJun 19, 03:55 UTC50m

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 N999FN page for operator, model, and routing details .

Mode-S ADF49C frequently asked

What is Mode-S code ADF49C?
ADF49C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N999FN.
Where is Mode-S ADF49C registered?
Mode-S code ADF49C 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 ADF49C broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADF49C, octal 53372234, decimal 11,400,348.
What flights does ADF49C operate?
Mode-S ADF49C has broadcast 1 distinct callsign, including N999FN.