Apparatus

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sensors Mode-S transponder

A01048

ICAO 24-bit transponder address · allocated to United States

Hex
A01048
Octal
50010110
Decimal
10,489,928
Country
US
Broadcasting now · callsign N103EL · 2,450 ft
Flights observed
66
Distinct callsigns
2
Country
US
Last broadcast
2h ago

Current position

A01048 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A01048 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 2 distinct

Callsign Airline Flights Last seen
N103EL - 65 2026-06-28
CSTT720 - 1 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-28 N103EL - Jun 28, 17:50 UTCJun 28, 19:20 UTC1h 30m
2026-06-28 N103EL - Jun 28, 13:00 UTCJun 28, 14:45 UTC1h 45m
2026-06-27 N103EL - Jun 27, 13:24 UTCJun 27, 14:20 UTC55m
2026-06-25 N103EL - Jun 25, 22:34 UTCJun 26, 00:30 UTC1h 55m
2026-06-25 N103EL - Jun 25, 17:54 UTCJun 25, 18:34 UTC40m
2026-06-25 N103EL - Jun 25, 15:34 UTCJun 25, 16:09 UTC35m
2026-06-25 N103EL - Jun 25, 11:19 UTCJun 25, 12:10 UTC50m
2026-06-24 N103EL - Jun 24, 19:00 UTCJun 24, 19:20 UTC20m
2026-06-24 N103EL - Jun 24, 18:05 UTCJun 24, 18:29 UTC25m
2026-06-23 N103EL - Jun 23, 21:10 UTCJun 23, 22:25 UTC1h 15m
2026-06-23 N103EL - Jun 23, 19:39 UTCJun 23, 20:29 UTC50m
2026-06-19 N103EL - Jun 19, 16:09 UTCJun 19, 16:34 UTC25m
2026-06-19 N103EL - Jun 19, 14:59 UTCJun 19, 15:29 UTC30m
2026-06-17 N103EL - Jun 17, 17:55 UTCJun 17, 19:15 UTC1h 20m
2026-06-17 N103EL CDW → CDW Jun 17, 12:55 UTCJun 17, 14:25 UTC1h 30m
2026-06-17 N103EL - Jun 17, 03:15 UTCJun 17, 04:05 UTC50m
2026-06-17 N103EL - Jun 17, 01:55 UTCJun 17, 02:40 UTC45m
2026-06-16 N103EL - Jun 16, 23:50 UTCJun 17, 01:10 UTC1h 20m
2026-06-16 N103EL - Jun 16, 20:35 UTCJun 16, 21:45 UTC1h 10m
2026-06-14 N103EL CDW → CDW Jun 14, 01:25 UTCJun 14, 02:10 UTC45m
2026-06-13 N103EL CDW → CDW Jun 13, 16:05 UTCJun 13, 17:20 UTC1h 15m
2026-06-09 N103EL - Jun 9, 19:15 UTCJun 9, 19:25 UTC10m
2026-06-09 N103EL - Jun 9, 18:05 UTCJun 9, 18:35 UTC30m
2026-06-09 N103EL - Jun 9, 16:45 UTCJun 9, 17:20 UTC35m
2026-06-09 N103EL - Jun 9, 13:20 UTCJun 9, 14:00 UTC40m
2026-06-08 N103EL - Jun 8, 23:45 UTCJun 9, 01:55 UTC2h 10m
2026-06-08 N103EL - Jun 8, 16:35 UTCJun 8, 17:00 UTC25m
2026-06-08 N103EL - Jun 8, 15:20 UTCJun 8, 15:45 UTC25m
2026-06-07 N103EL - Jun 7, 17:55 UTCJun 7, 19:35 UTC1h 40m
2026-06-05 N103EL - Jun 5, 18:05 UTCJun 5, 19:45 UTC1h 40m
2026-06-05 N103EL - Jun 5, 14:55 UTCJun 5, 15:10 UTC15m
2026-06-05 N103EL - Jun 5, 13:00 UTCJun 5, 13:30 UTC30m
2026-06-04 N103EL - Jun 4, 21:35 UTCJun 4, 22:05 UTC30m
2026-06-04 N103EL - Jun 4, 20:10 UTCJun 4, 20:35 UTC25m
2026-06-03 N103EL - Jun 3, 18:45 UTCJun 3, 21:10 UTC2h 25m
2026-06-03 N103EL - Jun 3, 15:15 UTCJun 3, 17:50 UTC2h 35m
2026-05-31 N103EL - May 31, 18:30 UTCMay 31, 20:05 UTC1h 35m
2026-05-31 N103EL - May 31, 15:35 UTCMay 31, 17:10 UTC1h 35m
2026-05-29 N103EL - May 29, 22:45 UTCMay 29, 23:40 UTC55m
2026-05-29 N103EL CDW → CDW May 29, 17:30 UTCMay 29, 19:10 UTC1h 40m
2026-05-29 N103EL - May 29, 12:50 UTCMay 29, 14:15 UTC1h 25m
2026-05-28 N103EL CDW → CDW May 28, 18:30 UTCMay 28, 18:50 UTC20m
2026-05-28 N103EL - May 28, 15:10 UTCMay 28, 16:20 UTC1h 10m
2026-05-26 N103EL - May 26, 21:14 UTCMay 26, 22:20 UTC1h 5m
2026-05-26 N103EL - May 26, 17:55 UTCMay 26, 19:34 UTC1h 40m
2026-05-26 N103EL - May 26, 12:54 UTCMay 26, 14:14 UTC1h 20m
2026-05-25 N103EL - May 25, 23:30 UTCMay 26, 00:44 UTC1h 15m
2026-05-25 N103EL - May 25, 21:30 UTCMay 25, 21:54 UTC25m
2026-05-25 N103EL - May 25, 20:19 UTCMay 25, 20:59 UTC40m
2026-05-22 N103EL - May 22, 23:05 UTCMay 23, 00:20 UTC1h 15m

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 A01048 frequently asked

What is Mode-S code A01048?
A01048 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S A01048 registered?
Mode-S code A01048 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 A01048 broadcasting right now?
Yes. Mode-S A01048 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A01048, octal 50010110, decimal 10,489,928.
What flights does A01048 operate?
Mode-S A01048 has broadcast 2 distinct callsigns, including N103EL, CSTT720.