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sensors Mode-S transponder

A18342

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N197MC · CESSNA 172 Skyhawk · operated by LEWIS UNIVERSITY

Hex
A18342
Octal
50301502
Decimal
10,584,898
Country
US
Tail
N197MC
Type
C172
No current signal · last broadcast 11d ago
Flights observed
188
Distinct callsigns
1
Country
US
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S A18342.

Country allocation

The ICAO 24-bit address A18342 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
N197MC - 188 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 N197MC - Jul 22, 18:40 UTCJul 22, 19:35 UTC55m
2026-07-22 N197MC - Jul 22, 16:45 UTCJul 22, 17:55 UTC1h 10m
2026-07-22 N197MC - Jul 22, 14:25 UTCJul 22, 15:25 UTC1h 0m
2026-07-21 N197MC - Jul 21, 18:20 UTCJul 21, 19:00 UTC40m
2026-07-20 N197MC - Jul 20, 16:45 UTCJul 20, 17:45 UTC1h 0m
2026-07-20 N197MC LOT → LOT Jul 20, 12:35 UTCJul 20, 13:15 UTC40m
2026-07-18 N197MC LOT → LOT Jul 18, 21:10 UTCJul 18, 23:00 UTC1h 50m
2026-07-18 N197MC LOT → LOT Jul 18, 20:25 UTCJul 18, 20:35 UTC10m
2026-07-07 N197MC - Jul 7, 16:50 UTCJul 7, 17:35 UTC45m
2026-07-02 N197MC - Jul 2, 18:35 UTCJul 2, 19:55 UTC1h 20m
2026-07-02 N197MC - Jul 2, 16:55 UTCJul 2, 17:40 UTC45m
2026-07-02 N197MC LOT → LOT Jul 2, 13:30 UTCJul 2, 14:25 UTC55m
2026-07-02 N197MC LOT → LOT Jul 2, 02:25 UTCJul 2, 04:10 UTC1h 45m
2026-07-01 N197MC - Jul 1, 20:45 UTCJul 1, 21:35 UTC50m
2026-07-01 N197MC LOT → LOT Jul 1, 14:40 UTCJul 1, 16:40 UTC2h 0m
2026-06-29 N197MC - Jun 29, 20:59 UTCJun 29, 22:05 UTC1h 5m
2026-06-26 N197MC - Jun 26, 21:39 UTCJun 26, 23:00 UTC1h 20m
2026-06-26 N197MC - Jun 26, 20:24 UTCJun 26, 21:30 UTC1h 5m
2026-06-26 N197MC - Jun 26, 17:00 UTCJun 26, 17:50 UTC50m
2026-06-25 N197MC LOT → LOT Jun 25, 20:34 UTCJun 25, 22:59 UTC2h 25m
2026-06-25 N197MC LOT → LOT Jun 25, 16:20 UTCJun 25, 16:29 UTC10m
2026-06-23 N197MC - Jun 23, 23:00 UTCJun 23, 23:50 UTC50m
2026-06-23 N197MC JOT → LOT Jun 23, 20:59 UTCJun 23, 22:05 UTC1h 5m
2026-06-23 N197MC - Jun 23, 19:00 UTCJun 23, 20:15 UTC1h 15m
2026-06-23 N197MC LOT → LOT Jun 23, 16:44 UTCJun 23, 17:50 UTC1h 5m
2026-06-23 N197MC - Jun 23, 14:25 UTCJun 23, 15:30 UTC1h 5m
2026-06-22 N197MC - Jun 22, 23:50 UTCJun 23, 00:30 UTC40m
2026-06-22 N197MC - Jun 22, 20:44 UTCJun 22, 22:05 UTC1h 20m
2026-06-22 N197MC LOT → LOT Jun 22, 18:40 UTCJun 22, 19:49 UTC1h 10m
2026-06-22 N197MC - Jun 22, 16:29 UTCJun 22, 17:29 UTC1h 0m
2026-06-20 N197MC - Jun 20, 21:55 UTCJun 20, 23:10 UTC1h 15m
2026-06-19 N197MC - Jun 19, 16:55 UTCJun 19, 18:44 UTC1h 50m
2026-06-19 N197MC - Jun 19, 14:44 UTCJun 19, 15:49 UTC1h 5m
2026-06-18 N197MC LOT → LOT Jun 18, 20:35 UTCJun 18, 21:45 UTC1h 10m
2026-06-18 N197MC LOT → LOT Jun 18, 18:45 UTCJun 18, 19:55 UTC1h 10m
2026-06-17 N197MC - Jun 17, 12:15 UTCJun 17, 13:20 UTC1h 5m
2026-06-16 N197MC LOT → LOT Jun 16, 02:40 UTCJun 16, 03:55 UTC1h 15m
2026-06-15 N197MC - Jun 15, 20:30 UTCJun 15, 22:05 UTC1h 35m
2026-06-15 N197MC - Jun 15, 16:35 UTCJun 15, 17:04 UTC30m
2026-06-15 N197MC - Jun 15, 13:15 UTCJun 15, 13:45 UTC30m
2026-06-12 N197MC - Jun 12, 22:10 UTCJun 12, 23:05 UTC55m
2026-06-12 N197MC - Jun 12, 20:50 UTCJun 12, 21:30 UTC40m
2026-06-12 N197MC LOT → LOT Jun 12, 16:50 UTCJun 12, 18:10 UTC1h 20m
2026-06-12 N197MC - Jun 12, 15:45 UTCJun 12, 16:15 UTC30m
2026-06-12 N197MC LOT → LOT Jun 12, 14:35 UTCJun 12, 15:10 UTC35m
2026-06-12 N197MC - Jun 12, 12:15 UTCJun 12, 13:25 UTC1h 10m
2026-06-11 N197MC - Jun 11, 14:55 UTCJun 11, 15:55 UTC1h 0m
2026-06-10 N197MC - Jun 10, 14:20 UTCJun 10, 15:40 UTC1h 20m
2026-06-10 N197MC LOT → LOT Jun 10, 12:30 UTCJun 10, 13:30 UTC1h 0m
2026-06-09 N197MC - Jun 9, 22:45 UTCJun 9, 23:40 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 N197MC page for operator, model, and routing details .

Mode-S A18342 frequently asked

What is Mode-S code A18342?
A18342 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N197MC.
Where is Mode-S A18342 registered?
Mode-S code A18342 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 A18342 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A18342, octal 50301502, decimal 10,584,898.
What flights does A18342 operate?
Mode-S A18342 has broadcast 1 distinct callsign, including N197MC.