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sensors Mode-S transponder

A188E2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N19842 · CESSNA 172 Skyhawk · operated by SOUTHERN AIRCRAFT CONSULTANCY INC TRUSTEE

Hex
A188E2
Octal
50304342
Decimal
10,586,338
Country
US
Tail
N19842
Type
C172
No current signal · last broadcast Jul 26, 17:15 UTC
Flights observed
112
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 17:15 UTC

Last known position

Most recent position reported by Mode-S A188E2.

Country allocation

The ICAO 24-bit address A188E2 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
N19842 - 111 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N19842 - Jul 26, 15:10 UTCJul 26, 17:15 UTC2h 5m
2026-07-26 N19842 - Jul 26, 10:10 UTCJul 26, 12:05 UTC1h 55m
2026-07-25 N19842 - Jul 25, 11:40 UTCJul 25, 13:00 UTC1h 20m
2026-07-25 N19842 - Jul 25, 10:05 UTCJul 25, 11:05 UTC1h 0m
2026-07-24 N19842 - Jul 24, 12:25 UTCJul 24, 13:00 UTC35m
2026-07-19 N19842 - Jul 19, 12:55 UTCJul 19, 14:25 UTC1h 30m
2026-07-17 N19842 - Jul 17, 17:20 UTCJul 17, 17:30 UTC10m
2026-07-17 N19842 - Jul 17, 15:40 UTCJul 17, 16:10 UTC30m
2026-07-17 N19842 - Jul 17, 12:55 UTCJul 17, 13:20 UTC25m
2026-07-15 N19842 - Jul 15, 19:35 UTCJul 15, 20:40 UTC1h 5m
2026-07-15 N19842 - Jul 15, 17:20 UTCJul 15, 18:20 UTC1h 0m
2026-07-15 N19842 - Jul 15, 15:05 UTCJul 15, 15:45 UTC40m
2026-07-14 N19842 - Jul 14, 12:55 UTCJul 14, 13:20 UTC25m
2026-07-14 N19842 - Jul 14, 10:20 UTCJul 14, 11:50 UTC1h 30m
2026-07-13 N19842 - Jul 13, 13:20 UTCJul 13, 13:40 UTC20m
2026-07-13 N19842 - Jul 13, 12:25 UTCJul 13, 12:45 UTC20m
2026-07-11 N19842 - Jul 11, 12:55 UTCJul 11, 15:40 UTC2h 45m
2026-07-10 N19842 - Jul 10, 20:00 UTCJul 10, 20:40 UTC40m
2026-07-10 N19842 - Jul 10, 17:50 UTCJul 10, 18:10 UTC20m
2026-07-10 N19842 - Jul 10, 15:15 UTCJul 10, 15:50 UTC35m
2026-07-10 N19842 - Jul 10, 12:55 UTCJul 10, 13:05 UTC10m
2026-07-09 N19842 - Jul 9, 21:55 UTCJul 9, 23:45 UTC1h 50m
2026-07-09 N19842 - Jul 9, 19:50 UTCJul 9, 20:20 UTC30m
2026-07-09 N19842 - Jul 9, 13:25 UTCJul 9, 13:35 UTC10m
2026-07-08 N19842 - Jul 8, 16:10 UTCJul 8, 16:20 UTC10m
2026-07-08 N19842 - Jul 8, 15:20 UTCJul 8, 15:35 UTC15m
2026-07-07 N19842 - Jul 7, 23:25 UTCJul 8, 00:25 UTC1h 0m
2026-07-07 N19842 - Jul 7, 20:10 UTCJul 7, 20:40 UTC30m
2026-07-07 N19842 - Jul 7, 13:05 UTCJul 7, 13:20 UTC15m
2026-07-07 N19842 - Jul 7, 01:05 UTCJul 7, 01:20 UTC15m
2026-07-06 N19842 - Jul 6, 12:45 UTCJul 6, 12:55 UTC10m
2026-07-05 N19842 - Jul 5, 12:55 UTCJul 5, 13:05 UTC10m
2026-07-03 N19842 - Jul 3, 14:45 UTCJul 3, 15:15 UTC30m
2026-07-02 N19842 - Jul 2, 15:00 UTCJul 2, 15:15 UTC15m
2026-07-02 N19842 - Jul 2, 12:45 UTCJul 2, 13:20 UTC35m
2026-07-01 N19842 - Jul 1, 14:50 UTCJul 1, 15:25 UTC35m
2026-07-01 N19842 - Jul 1, 12:40 UTCJul 1, 13:05 UTC25m
2026-06-30 N19842 - Jun 30, 22:25 UTCJun 30, 22:45 UTC20m
2026-06-30 N19842 - Jun 30, 13:20 UTCJun 30, 13:50 UTC30m
2026-06-29 N19842 - Jun 29, 20:49 UTCJun 29, 21:24 UTC35m
2026-06-29 N19842 - Jun 29, 12:45 UTCJun 29, 13:34 UTC50m
2026-06-28 N19842 - Jun 28, 18:19 UTCJun 28, 18:59 UTC40m
2026-06-28 N19842 - Jun 28, 14:54 UTCJun 28, 15:05 UTC10m
2026-06-27 N19842 - Jun 27, 22:45 UTCJun 27, 23:00 UTC15m
2026-06-27 N19842 - Jun 27, 21:25 UTCJun 27, 21:50 UTC25m
2026-06-27 N19842 - Jun 27, 15:55 UTCJun 27, 17:04 UTC1h 10m
2026-06-25 N19842 - Jun 25, 15:04 UTCJun 25, 15:44 UTC40m
2026-06-24 N19842 - Jun 24, 17:50 UTCJun 24, 18:25 UTC35m
2026-06-24 N19842 - Jun 24, 16:14 UTCJun 24, 16:54 UTC40m
2026-06-24 N19842 - Jun 24, 14:55 UTCJun 24, 15:24 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.

Prefer a tail-number view? See the N19842 page for operator, model, and routing details .

Mode-S A188E2 frequently asked

What is Mode-S code A188E2?
A188E2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N19842.
Where is Mode-S A188E2 registered?
Mode-S code A188E2 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 A188E2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A188E2, octal 50304342, decimal 10,586,338.
What flights does A188E2 operate?
Mode-S A188E2 has broadcast 1 distinct callsign, including N19842.