Apparatus

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sensors Mode-S transponder

A19A7C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N202LS · DIAMOND DA-40 Club Star · operated by KSX AVIATION SERVICES LLC

Hex
A19A7C
Octal
50315174
Decimal
10,590,844
Country
US
Tail
N202LS
Type
DA40
No current signal · last broadcast 11h ago
Flights observed
96
Distinct callsigns
1
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A19A7C.

Country allocation

The ICAO 24-bit address A19A7C 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
N202LS - 96 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N202LS PAO → PAO Jul 18, 01:34 UTCJul 18, 02:19 UTC45m
2026-07-17 N202LS PAO → PAO Jul 17, 23:25 UTCJul 18, 00:25 UTC1h 0m
2026-07-17 N202LS RHV → PAO Jul 17, 01:45 UTCJul 17, 02:15 UTC30m
2026-07-17 N202LS PAO → RHV Jul 17, 00:45 UTCJul 17, 01:35 UTC50m
2026-07-16 N202LS PAO → PAO Jul 16, 04:10 UTCJul 16, 06:20 UTC2h 10m
2026-07-16 N202LS PAO → PAO Jul 16, 02:05 UTCJul 16, 02:20 UTC15m
2026-07-16 N202LS HWD → PAO Jul 16, 01:30 UTCJul 16, 02:00 UTC30m
2026-07-16 N202LS PAO → HWD Jul 16, 00:35 UTCJul 16, 01:10 UTC35m
2026-07-14 N202LS PAO → PAO Jul 14, 23:55 UTCJul 15, 00:50 UTC55m
2026-07-14 N202LS - Jul 14, 02:10 UTCJul 14, 02:35 UTC25m
2026-07-14 N202LS - Jul 14, 00:15 UTCJul 14, 00:35 UTC20m
2026-07-12 N202LS - Jul 12, 23:05 UTCJul 12, 23:15 UTC10m
2026-07-12 N202LS - Jul 12, 21:50 UTCJul 12, 22:05 UTC15m
2026-07-12 N202LS PAO → PAO Jul 12, 17:25 UTCJul 12, 19:05 UTC1h 40m
2026-07-11 N202LS PAO → PAO Jul 11, 17:30 UTCJul 11, 18:50 UTC1h 20m
2026-07-10 N202LS PAO → PAO Jul 10, 23:15 UTCJul 11, 00:45 UTC1h 30m
2026-07-10 N202LS - Jul 10, 02:05 UTCJul 10, 02:20 UTC15m
2026-07-10 N202LS - Jul 10, 00:45 UTCJul 10, 01:20 UTC35m
2026-07-07 N202LS - Jul 7, 18:10 UTCJul 7, 19:00 UTC50m
2026-07-07 N202LS - Jul 7, 17:25 UTCJul 7, 18:05 UTC40m
2026-07-07 N202LS PAO → PAO Jul 7, 00:40 UTCJul 7, 01:50 UTC1h 10m
2026-07-05 N202LS PAO → PAO Jul 5, 19:10 UTCJul 5, 20:25 UTC1h 15m
2026-07-04 N202LS - Jul 4, 23:10 UTCJul 5, 00:25 UTC1h 15m
2026-07-04 N202LS PAO → PAO Jul 4, 21:30 UTCJul 4, 22:00 UTC30m
2026-07-04 N202LS PAO → PAO Jul 4, 17:45 UTCJul 4, 19:05 UTC1h 20m
2026-07-03 N202LS PAO → PAO Jul 3, 23:40 UTCJul 4, 01:10 UTC1h 30m
2026-07-03 N202LS PAO → PAO Jul 3, 21:40 UTCJul 3, 22:20 UTC40m
2026-07-03 N202LS PAO → PAO Jul 3, 17:50 UTCJul 3, 19:10 UTC1h 20m
2026-07-03 N202LS - Jul 3, 01:40 UTCJul 3, 02:25 UTC45m
2026-07-02 N202LS - Jul 2, 22:35 UTCJul 2, 23:20 UTC45m
2026-07-02 N202LS PAO → PAO Jul 2, 01:15 UTCJul 2, 02:30 UTC1h 15m
2026-06-30 N202LS PAO → PAO Jun 30, 21:25 UTCJun 30, 22:10 UTC45m
2026-06-30 N202LS - Jun 30, 18:05 UTCJun 30, 18:35 UTC30m
2026-06-30 N202LS - Jun 30, 17:05 UTCJun 30, 17:35 UTC30m
2026-06-30 N202LS PAO → PAO Jun 30, 01:25 UTCJun 30, 02:10 UTC45m
2026-06-29 N202LS HWD → PAO Jun 29, 18:44 UTCJun 29, 18:55 UTC10m
2026-06-29 N202LS - Jun 29, 17:55 UTCJun 29, 18:39 UTC45m
2026-06-29 N202LS - Jun 29, 17:10 UTCJun 29, 17:45 UTC35m
2026-06-28 N202LS PAO → PAO Jun 28, 22:55 UTCJun 29, 00:14 UTC1h 20m
2026-06-28 N202LS PAO → PAO Jun 28, 19:59 UTCJun 28, 21:24 UTC1h 25m
2026-06-28 N202LS PAO → PAO Jun 28, 17:34 UTCJun 28, 18:14 UTC40m
2026-06-28 N202LS PAO → PAO Jun 28, 14:39 UTCJun 28, 15:20 UTC40m
2026-06-27 N202LS PAO → PAO Jun 27, 20:55 UTCJun 27, 21:34 UTC40m
2026-06-27 N202LS PAO → PAO Jun 27, 17:59 UTCJun 27, 19:15 UTC1h 15m
2026-06-27 N202LS - Jun 27, 00:25 UTCJun 27, 00:44 UTC20m
2026-06-26 N202LS - Jun 26, 22:49 UTCJun 26, 23:30 UTC40m
2026-06-25 N202LS SJC → PAO Jun 25, 23:49 UTCJun 25, 23:59 UTC10m
2026-06-19 N202LS PAO → SJC Jun 19, 18:44 UTCJun 19, 18:54 UTC10m
2026-05-23 N202LS SMO → PAO May 23, 03:45 UTCMay 23, 06:00 UTC2h 15m
2026-05-22 N202LS PAO → SMO May 22, 20:30 UTCMay 23, 00:30 UTC4h 0m

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 N202LS page for operator, model, and routing details .

Mode-S A19A7C frequently asked

What is Mode-S code A19A7C?
A19A7C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N202LS.
Where is Mode-S A19A7C registered?
Mode-S code A19A7C 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 A19A7C broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A19A7C, octal 50315174, decimal 10,590,844.
What flights does A19A7C operate?
Mode-S A19A7C has broadcast 1 distinct callsign, including N202LS.