Apparatus

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sensors Mode-S transponder

A48081

ICAO 24-bit transponder address · allocated to United States

Hex
A48081
Octal
51100201
Decimal
10,780,801
Country
US
No current signal · last broadcast 3d ago
Flights observed
67
Distinct callsigns
1
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A48081.

Country allocation

The ICAO 24-bit address A48081 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
N39AS - 67 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 N39AS HSH → HSH Jul 10, 13:40 UTCJul 10, 14:50 UTC1h 10m
2026-07-09 N39AS HSH → HSH Jul 9, 21:10 UTCJul 9, 22:40 UTC1h 30m
2026-07-09 N39AS HSH → HSH Jul 9, 13:50 UTCJul 9, 14:50 UTC1h 0m
2026-07-05 N39AS - Jul 5, 20:15 UTCJul 5, 20:20 UTC5m
2026-07-05 N39AS - Jul 5, 18:55 UTCJul 5, 19:05 UTC10m
2026-07-02 N39AS - Jul 2, 16:35 UTCJul 2, 16:45 UTC10m
2026-07-02 N39AS - Jul 2, 15:30 UTCJul 2, 15:40 UTC10m
2026-07-01 N39AS HSH → HSH Jul 1, 15:55 UTCJul 1, 17:35 UTC1h 40m
2026-07-01 N39AS - Jul 1, 14:45 UTCJul 1, 14:55 UTC10m
2026-07-01 N39AS - Jul 1, 14:05 UTCJul 1, 14:10 UTC5m
2026-06-29 N39AS - Jun 29, 15:04 UTCJun 29, 15:14 UTC10m
2026-06-29 N39AS - Jun 29, 13:49 UTCJun 29, 13:59 UTC10m
2026-06-26 N39AS HSH → HSH Jun 26, 00:59 UTCJun 26, 01:39 UTC40m
2026-06-19 N39AS - Jun 19, 19:14 UTCJun 19, 19:19 UTC5m
2026-06-19 N39AS - Jun 19, 18:20 UTCJun 19, 18:30 UTC10m
2026-06-19 N39AS - Jun 19, 15:54 UTCJun 19, 16:14 UTC20m
2026-06-19 N39AS HSH → VGT Jun 19, 15:04 UTCJun 19, 15:49 UTC45m
2026-06-16 N39AS HSH → HSH Jun 16, 17:55 UTCJun 16, 18:29 UTC35m
2026-06-16 N39AS HSH → HSH Jun 16, 13:44 UTCJun 16, 16:05 UTC2h 20m
2026-06-10 N39AS HSH → HSH Jun 10, 19:10 UTCJun 10, 20:25 UTC1h 15m
2026-06-07 N39AS - Jun 7, 16:55 UTCJun 7, 17:15 UTC20m
2026-06-07 N39AS - Jun 7, 15:35 UTCJun 7, 15:40 UTC5m
2026-06-02 N39AS - Jun 2, 05:40 UTCJun 2, 06:05 UTC25m
2026-06-02 N39AS - Jun 2, 03:30 UTCJun 2, 03:45 UTC15m
2026-05-30 N39AS - May 30, 16:50 UTCMay 30, 17:15 UTC25m
2026-05-30 N39AS HSH → HII May 30, 14:45 UTCMay 30, 15:30 UTC45m
2026-05-28 N39AS - May 28, 17:20 UTCMay 28, 17:30 UTC10m
2026-05-28 N39AS - May 28, 15:55 UTCMay 28, 16:45 UTC50m
2026-05-27 N39AS HSH → HSH May 27, 23:05 UTCMay 27, 23:50 UTC45m
2026-05-25 N39AS HSH → HSH May 25, 16:45 UTCMay 25, 17:40 UTC55m
2026-05-25 N39AS HSH → HSH May 25, 13:35 UTCMay 25, 14:50 UTC1h 15m
2026-05-22 N39AS - May 22, 15:25 UTCMay 22, 15:45 UTC20m
2026-05-22 N39AS - May 22, 13:50 UTCMay 22, 14:20 UTC30m
2026-05-21 N39AS HSH → HSH May 21, 01:05 UTCMay 21, 02:25 UTC1h 20m
2026-05-20 N39AS HSH → HSH May 20, 19:30 UTCMay 20, 20:10 UTC40m
2026-05-20 N39AS HSH → HSH May 20, 15:20 UTCMay 20, 16:40 UTC1h 20m
2026-05-18 N39AS - May 18, 18:20 UTCMay 18, 18:30 UTC9m
2026-05-18 N39AS - May 18, 17:35 UTCMay 18, 17:45 UTC10m
2026-05-17 N39AS - May 17, 22:25 UTCMay 17, 22:35 UTC10m
2026-05-17 N39AS - May 17, 21:40 UTCMay 17, 21:50 UTC10m
2026-05-17 N39AS HSH → HSH May 17, 15:01 UTCMay 17, 16:45 UTC1h 45m
2026-05-14 N39AS HSH → HSH May 14, 17:25 UTCMay 14, 18:55 UTC1h 30m
2026-05-13 N39AS - May 13, 17:15 UTCMay 13, 17:50 UTC35m
2026-05-13 N39AS - May 13, 15:45 UTCMay 13, 16:35 UTC50m
2026-05-12 N39AS - May 12, 17:35 UTCMay 12, 17:45 UTC10m
2026-05-12 N39AS - May 12, 16:15 UTCMay 12, 16:20 UTC5m
2026-05-10 N39AS - May 10, 06:15 UTCMay 10, 06:45 UTC30m
2026-05-10 N39AS - May 10, 01:14 UTCMay 10, 01:24 UTC10m
2026-05-09 N39AS HSH → HSH May 9, 16:25 UTCMay 9, 17:40 UTC1h 15m
2026-05-06 N39AS HSH → HSH May 6, 15:25 UTCMay 6, 17:05 UTC1h 40m

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 A48081 frequently asked

What is Mode-S code A48081?
A48081 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S A48081 registered?
Mode-S code A48081 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 A48081 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A48081, octal 51100201, decimal 10,780,801.
What flights does A48081 operate?
Mode-S A48081 has broadcast 1 distinct callsign, including N39AS.