Apparatus

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sensors Mode-S transponder

A81042

ICAO 24-bit transponder address · allocated to United States

Hex
A81042
Octal
52010102
Decimal
11,014,210
Country
US
No current signal · last broadcast 7h ago
Flights observed
112
Distinct callsigns
1
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S A81042.

Country allocation

The ICAO 24-bit address A81042 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
N619AW - 112 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N619AW IAD → HPN Jul 14, 13:00 UTCJul 14, 14:55 UTC1h 55m
2026-07-14 N619AW - Jul 14, 10:40 UTCJul 14, 12:15 UTC1h 35m
2026-07-13 N619AW - Jul 13, 15:45 UTCJul 13, 16:50 UTC1h 5m
2026-07-12 N619AW - Jul 12, 19:05 UTCJul 12, 19:35 UTC30m
2026-07-12 N619AW - Jul 12, 17:35 UTCJul 12, 18:05 UTC30m
2026-07-11 N619AW - Jul 11, 22:30 UTCJul 11, 22:40 UTC10m
2026-07-10 N619AW - Jul 10, 21:45 UTCJul 10, 22:15 UTC30m
2026-07-10 N619AW - Jul 10, 20:50 UTCJul 10, 21:15 UTC25m
2026-07-08 N619AW - Jul 8, 22:50 UTCJul 9, 00:35 UTC1h 45m
2026-07-08 N619AW - Jul 8, 20:15 UTCJul 8, 21:45 UTC1h 30m
2026-07-08 N619AW BID → HPN Jul 8, 16:15 UTCJul 8, 17:00 UTC45m
2026-07-08 N619AW - Jul 8, 13:45 UTCJul 8, 14:30 UTC45m
2026-07-07 N619AW - Jul 7, 04:40 UTCJul 7, 06:20 UTC1h 40m
2026-07-07 N619AW - Jul 7, 00:30 UTCJul 7, 02:30 UTC2h 0m
2026-07-06 N619AW - Jul 6, 22:30 UTCJul 6, 22:50 UTC20m
2026-07-06 N619AW - Jul 6, 21:10 UTCJul 6, 21:50 UTC40m
2026-07-06 N619AW - Jul 6, 15:25 UTCJul 6, 16:40 UTC1h 15m
2026-07-05 N619AW - Jul 5, 14:15 UTCJul 5, 15:25 UTC1h 10m
2026-07-04 N619AW - Jul 4, 12:20 UTCJul 4, 13:20 UTC1h 0m
2026-07-03 N619AW - Jul 3, 11:35 UTCJul 3, 12:50 UTC1h 15m
2026-07-02 N619AW - Jul 2, 23:35 UTCJul 3, 00:00 UTC25m
2026-07-02 N619AW - Jul 2, 21:00 UTCJul 2, 23:00 UTC2h 0m
2026-07-02 N619AW - Jul 2, 14:20 UTCJul 2, 14:55 UTC35m
2026-07-02 N619AW - Jul 2, 00:45 UTCJul 2, 02:05 UTC1h 20m
2026-07-01 N619AW - Jul 1, 15:05 UTCJul 1, 15:30 UTC25m
2026-07-01 N619AW - Jul 1, 13:50 UTCJul 1, 14:35 UTC45m
2026-07-01 N619AW - Jul 1, 12:15 UTCJul 1, 12:35 UTC20m
2026-06-30 N619AW - Jun 30, 14:20 UTCJun 30, 15:25 UTC1h 5m
2026-06-30 N619AW - Jun 30, 12:55 UTCJun 30, 13:30 UTC35m
2026-06-30 N619AW - Jun 30, 11:40 UTCJun 30, 12:15 UTC35m
2026-06-29 N619AW - Jun 29, 19:54 UTCJun 29, 20:19 UTC25m
2026-06-29 N619AW - Jun 29, 16:29 UTCJun 29, 17:45 UTC1h 15m
2026-06-28 N619AW - Jun 28, 21:40 UTCJun 28, 22:04 UTC25m
2026-06-28 N619AW - Jun 28, 20:25 UTCJun 28, 20:50 UTC25m
2026-06-28 N619AW - Jun 28, 16:55 UTCJun 28, 19:34 UTC2h 40m
2026-06-27 N619AW - Jun 27, 16:44 UTCJun 27, 17:14 UTC30m
2026-06-27 N619AW - Jun 27, 14:00 UTCJun 27, 15:55 UTC1h 55m
2026-06-26 N619AW - Jun 26, 19:35 UTCJun 26, 21:04 UTC1h 30m
2026-06-26 N619AW - Jun 26, 18:24 UTCJun 26, 18:49 UTC25m
2026-06-26 N619AW - Jun 26, 17:09 UTCJun 26, 17:44 UTC35m
2026-06-21 N619AW - Jun 21, 19:24 UTCJun 21, 20:00 UTC35m
2026-06-21 N619AW - Jun 21, 17:05 UTCJun 21, 17:35 UTC30m
2026-06-17 N619AW - Jun 17, 21:15 UTCJun 17, 23:00 UTC1h 45m
2026-06-17 N619AW - Jun 17, 18:30 UTCJun 17, 20:15 UTC1h 45m
2026-06-16 N619AW IAD → HPN Jun 16, 13:04 UTCJun 16, 14:45 UTC1h 40m
2026-06-16 N619AW - Jun 16, 10:40 UTCJun 16, 12:20 UTC1h 40m
2026-06-14 N619AW - Jun 14, 18:35 UTCJun 14, 19:05 UTC30m
2026-06-14 N619AW - Jun 14, 16:30 UTCJun 14, 17:00 UTC30m
2026-06-11 N619AW - Jun 11, 14:20 UTCJun 11, 14:35 UTC15m
2026-06-11 N619AW - Jun 11, 13:15 UTCJun 11, 13:45 UTC30m

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.

Mode-S A81042 frequently asked

What is Mode-S code A81042?
A81042 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S A81042 registered?
Mode-S code A81042 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 A81042 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A81042, octal 52010102, decimal 11,014,210.
What flights does A81042 operate?
Mode-S A81042 has broadcast 1 distinct callsign, including N619AW.