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sensors Mode-S transponder

AB20CA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N816MS · TECNAM P-2006T · operated by SOCAL AVIATION INC

Hex
AB20CA
Octal
52620312
Decimal
11,215,050
Country
US
Tail
N816MS
Type
P06T
No current signal · last broadcast 1d ago
Flights observed
94
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AB20CA.

Country allocation

The ICAO 24-bit address AB20CA 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
N816MS - 94 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 N816MS - Jul 8, 23:25 UTCJul 9, 00:10 UTC45m
2026-07-08 N816MS - Jul 8, 22:25 UTCJul 8, 23:20 UTC55m
2026-07-08 N816MS - Jul 8, 20:10 UTCJul 8, 21:25 UTC1h 15m
2026-07-07 N816MS - Jul 7, 22:00 UTCJul 7, 22:55 UTC55m
2026-07-07 N816MS - Jul 7, 17:35 UTCJul 7, 17:55 UTC20m
2026-07-06 N816MS CNO → CNO Jul 6, 22:35 UTCJul 6, 23:15 UTC40m
2026-07-06 N816MS - Jul 6, 20:00 UTCJul 6, 21:20 UTC1h 20m
2026-07-04 N816MS - Jul 4, 00:25 UTCJul 4, 00:50 UTC25m
2026-07-04 N816MS - Jul 4, 00:10 UTCJul 4, 00:20 UTC10m
2026-07-03 N816MS - Jul 3, 22:55 UTCJul 4, 00:05 UTC1h 10m
2026-07-02 N816MS CCB → CNO Jul 2, 00:35 UTCJul 2, 00:45 UTC10m
2026-07-01 N816MS CCB → CCB Jul 1, 22:50 UTCJul 2, 00:05 UTC1h 15m
2026-07-01 N816MS - Jul 1, 04:25 UTCJul 1, 05:45 UTC1h 20m
2026-06-30 N816MS - Jun 30, 22:10 UTCJun 30, 23:20 UTC1h 10m
2026-06-30 N816MS CNO → CNO Jun 30, 17:25 UTCJun 30, 17:55 UTC30m
2026-06-30 N816MS - Jun 30, 01:14 UTCJun 30, 02:15 UTC1h 1m
2026-06-29 N816MS CNO → CNO Jun 29, 22:19 UTCJun 29, 23:19 UTC1h 0m
2026-06-29 N816MS - Jun 29, 17:49 UTCJun 29, 19:15 UTC1h 25m
2026-06-28 N816MS - Jun 28, 23:20 UTCJun 29, 00:00 UTC40m
2026-06-28 N816MS CNO → CNO Jun 28, 21:45 UTCJun 28, 22:29 UTC45m
2026-06-28 N816MS CNO → CNO Jun 28, 17:39 UTCJun 28, 18:44 UTC1h 5m
2026-06-28 N816MS CNO → CNO Jun 28, 01:34 UTCJun 28, 03:05 UTC1h 30m
2026-06-27 N816MS CNO → CNO Jun 27, 23:25 UTCJun 28, 00:25 UTC1h 0m
2026-06-27 N816MS CNO → CNO Jun 27, 17:44 UTCJun 27, 19:00 UTC1h 15m
2026-06-26 N816MS - Jun 26, 23:19 UTCJun 27, 01:15 UTC1h 55m
2026-06-26 N816MS - Jun 26, 21:30 UTCJun 26, 22:05 UTC35m
2026-06-25 N816MS - Jun 25, 23:55 UTCJun 26, 00:59 UTC1h 5m
2026-06-24 N816MS - Jun 24, 23:45 UTCJun 25, 00:40 UTC55m
2026-06-24 N816MS - Jun 24, 19:49 UTCJun 24, 21:04 UTC1h 15m
2026-06-23 N816MS CNO → CNO Jun 23, 00:04 UTCJun 23, 01:20 UTC1h 15m
2026-06-19 N816MS CNO → CNO Jun 19, 21:54 UTCJun 19, 23:14 UTC1h 20m
2026-06-19 N816MS CNO → CNO Jun 19, 00:20 UTCJun 19, 01:24 UTC1h 5m
2026-06-17 N816MS - Jun 17, 04:35 UTCJun 17, 05:35 UTC1h 0m
2026-06-17 N816MS - Jun 17, 00:40 UTCJun 17, 03:15 UTC2h 35m
2026-06-16 N816MS - Jun 16, 23:00 UTCJun 16, 23:20 UTC20m
2026-06-16 N816MS - Jun 16, 21:55 UTCJun 16, 22:50 UTC55m
2026-06-16 N816MS - Jun 16, 19:50 UTCJun 16, 20:35 UTC45m
2026-06-16 N816MS - Jun 16, 17:10 UTCJun 16, 17:35 UTC25m
2026-06-14 N816MS - Jun 14, 18:10 UTCJun 14, 19:15 UTC1h 5m
2026-06-14 N816MS - Jun 14, 14:55 UTCJun 14, 15:50 UTC55m
2026-06-13 N816MS - Jun 13, 23:30 UTCJun 14, 00:30 UTC1h 0m
2026-06-12 N816MS - Jun 12, 01:50 UTCJun 12, 02:20 UTC30m
2026-06-09 N816MS - Jun 9, 20:05 UTCJun 9, 21:05 UTC1h 0m
2026-06-09 N816MS CNO → CNO Jun 9, 01:50 UTCJun 9, 03:00 UTC1h 10m
2026-06-08 N816MS CNO → CNO Jun 8, 23:55 UTCJun 9, 01:05 UTC1h 10m
2026-06-08 N816MS CNO → CNO Jun 8, 02:10 UTCJun 8, 03:45 UTC1h 35m
2026-06-08 N816MS CNO → CNO Jun 8, 00:10 UTCJun 8, 01:10 UTC1h 0m
2026-06-07 N816MS CNO → CNO Jun 7, 18:10 UTCJun 7, 19:10 UTC1h 0m
2026-06-07 N816MS CNO → CNO Jun 7, 00:14 UTCJun 7, 00:39 UTC25m
2026-06-06 N816MS CNO → CNO Jun 6, 21:54 UTCJun 6, 22:50 UTC55m

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 N816MS page for operator, model, and routing details .

Mode-S AB20CA frequently asked

What is Mode-S code AB20CA?
AB20CA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N816MS.
Where is Mode-S AB20CA registered?
Mode-S code AB20CA 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 AB20CA broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB20CA, octal 52620312, decimal 11,215,050.
What flights does AB20CA operate?
Mode-S AB20CA has broadcast 1 distinct callsign, including N816MS.