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sensors Mode-S transponder

A480AD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N39CL · BELL 407 · operated by HELICOPTERS INC

Hex
A480AD
Octal
51100255
Decimal
10,780,845
Country
US
Tail
N39CL
Type
B407
No current signal · last broadcast 5h ago
Flights observed
187
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A480AD.

Country allocation

The ICAO 24-bit address A480AD 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
N39CL - 187 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N39CL - Jul 18, 04:50 UTCJul 18, 05:20 UTC30m
2026-07-17 N39CL - Jul 17, 23:50 UTCJul 18, 00:19 UTC30m
2026-07-17 N39CL - Jul 17, 22:49 UTCJul 17, 23:20 UTC30m
2026-07-17 N39CL VNY → VNY Jul 17, 21:20 UTCJul 17, 21:50 UTC30m
2026-07-17 N39CL - Jul 17, 04:49 UTCJul 17, 05:25 UTC35m
2026-07-17 N39CL - Jul 17, 03:50 UTCJul 17, 04:14 UTC25m
2026-07-17 N39CL VNY → VNY Jul 17, 02:45 UTCJul 17, 03:14 UTC30m
2026-07-16 N39CL - Jul 16, 23:49 UTCJul 17, 01:25 UTC1h 35m
2026-07-16 N39CL - Jul 16, 21:40 UTCJul 16, 23:15 UTC1h 35m
2026-07-16 N39CL VNY → VNY Jul 16, 19:30 UTCJul 16, 20:45 UTC1h 15m
2026-07-16 N39CL - Jul 16, 15:00 UTCJul 16, 17:25 UTC2h 25m
2026-07-15 N39CL - Jul 15, 21:25 UTCJul 16, 01:05 UTC3h 40m
2026-07-15 N39CL - Jul 15, 02:25 UTCJul 15, 02:50 UTC25m
2026-07-15 N39CL VNY → VNY Jul 15, 00:45 UTCJul 15, 01:00 UTC15m
2026-07-14 N39CL - Jul 14, 21:50 UTCJul 14, 23:15 UTC1h 24m
2026-07-14 N39CL - Jul 14, 02:55 UTCJul 14, 03:45 UTC50m
2026-07-14 N39CL VNY → VNY Jul 14, 00:10 UTCJul 14, 01:35 UTC1h 25m
2026-07-13 N39CL - Jul 13, 21:55 UTCJul 13, 22:25 UTC30m
2026-07-13 N39CL - Jul 13, 00:30 UTCJul 13, 01:25 UTC55m
2026-07-12 N39CL - Jul 12, 23:15 UTCJul 12, 23:55 UTC40m
2026-07-11 N39CL - Jul 11, 05:50 UTCJul 11, 06:05 UTC15m
2026-07-11 N39CL - Jul 11, 04:30 UTCJul 11, 05:05 UTC35m
2026-07-10 N39CL VNY → VNY Jul 10, 22:05 UTCJul 11, 03:40 UTC5h 35m
2026-07-09 N39CL - Jul 9, 19:45 UTCJul 9, 20:15 UTC30m
2026-07-09 N39CL - Jul 9, 19:05 UTCJul 9, 19:15 UTC10m
2026-07-09 N39CL - Jul 9, 17:45 UTCJul 9, 18:20 UTC35m
2026-07-09 N39CL - Jul 9, 17:00 UTCJul 9, 17:10 UTC10m
2026-07-06 N39CL - Jul 6, 03:05 UTCJul 6, 06:30 UTC3h 25m
2026-07-05 N39CL VNY → VNY Jul 5, 23:10 UTCJul 6, 01:25 UTC2h 15m
2026-07-04 N39CL - Jul 4, 03:30 UTCJul 4, 05:25 UTC1h 55m
2026-07-04 N39CL - Jul 4, 01:20 UTCJul 4, 01:35 UTC15m
2026-07-03 N39CL VNY → VNY Jul 3, 22:45 UTCJul 4, 00:20 UTC1h 35m
2026-07-03 N39CL - Jul 3, 03:40 UTCJul 3, 04:35 UTC55m
2026-07-02 N39CL - Jul 2, 21:20 UTCJul 2, 22:05 UTC45m
2026-07-02 N39CL - Jul 2, 02:55 UTCJul 2, 03:15 UTC20m
2026-07-01 N39CL - Jul 1, 23:50 UTCJul 2, 01:50 UTC2h 0m
2026-07-01 N39CL VNY → VNY Jul 1, 22:20 UTCJul 1, 22:50 UTC30m
2026-07-01 N39CL - Jul 1, 04:05 UTCJul 1, 06:30 UTC2h 25m
2026-06-30 N39CL - Jun 30, 23:50 UTCJul 1, 00:25 UTC35m
2026-06-30 N39CL - Jun 30, 06:05 UTCJun 30, 06:30 UTC25m
2026-06-30 N39CL - Jun 30, 03:00 UTCJun 30, 03:35 UTC35m
2026-06-30 N39CL - Jun 30, 00:20 UTCJun 30, 01:19 UTC1h 0m
2026-06-29 N39CL - Jun 29, 22:49 UTCJun 29, 23:34 UTC45m
2026-06-29 N39CL - Jun 29, 21:39 UTCJun 29, 22:19 UTC40m
2026-06-29 N39CL - Jun 29, 04:39 UTCJun 29, 05:24 UTC45m
2026-06-28 N39CL - Jun 28, 23:09 UTCJun 29, 00:34 UTC1h 25m
2026-06-27 N39CL - Jun 27, 02:50 UTCJun 27, 04:29 UTC1h 40m
2026-06-26 N39CL - Jun 26, 22:34 UTCJun 26, 23:00 UTC25m
2026-06-26 N39CL VNY → VNY Jun 26, 03:24 UTCJun 26, 04:24 UTC1h 0m
2026-06-25 N39CL - Jun 25, 16:05 UTCJun 25, 16:14 UTC10m

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 N39CL page for operator, model, and routing details .

Mode-S A480AD frequently asked

What is Mode-S code A480AD?
A480AD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N39CL.
Where is Mode-S A480AD registered?
Mode-S code A480AD 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 A480AD broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A480AD, octal 51100255, decimal 10,780,845.
What flights does A480AD operate?
Mode-S A480AD has broadcast 1 distinct callsign, including N39CL.