Apparatus

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sensors Mode-S transponder

A178B8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N194TH · CESSNA 172 Skyhawk · operated by WINGSLEASING LLC

Hex
A178B8
Octal
50274270
Decimal
10,582,200
Country
US
Tail
N194TH
Type
C172
No current signal · last broadcast 13h ago
Flights observed
105
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A178B8.

Country allocation

The ICAO 24-bit address A178B8 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
N194TH - 105 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N194TH SMX → OXR Jul 13, 20:15 UTCJul 13, 21:05 UTC50m
2026-07-13 N194TH - Jul 13, 19:20 UTCJul 13, 20:10 UTC50m
2026-07-13 N194TH - Jul 13, 16:05 UTCJul 13, 16:45 UTC40m
2026-07-13 N194TH - Jul 13, 00:50 UTCJul 13, 02:30 UTC1h 40m
2026-07-12 N194TH - Jul 12, 20:50 UTCJul 12, 21:35 UTC45m
2026-07-12 N194TH - Jul 12, 00:01 UTCJul 12, 00:50 UTC50m
2026-07-09 N194TH - Jul 9, 16:15 UTCJul 9, 17:15 UTC1h 0m
2026-07-08 N194TH OXR → OXR Jul 8, 21:15 UTCJul 8, 22:05 UTC50m
2026-07-08 N194TH - Jul 8, 19:25 UTCJul 8, 20:05 UTC40m
2026-07-08 N194TH BFL → OXR Jul 8, 15:50 UTCJul 8, 16:40 UTC50m
2026-07-08 N194TH BFL → BFL Jul 8, 05:45 UTCJul 8, 06:25 UTC40m
2026-07-06 N194TH - Jul 6, 20:20 UTCJul 6, 20:45 UTC25m
2026-07-06 N194TH - Jul 6, 18:35 UTCJul 6, 19:10 UTC35m
2026-07-06 N194TH BFL → BFL Jul 6, 14:10 UTCJul 6, 15:15 UTC1h 5m
2026-07-05 N194TH - Jul 5, 22:10 UTCJul 5, 22:30 UTC20m
2026-07-05 N194TH - Jul 5, 20:50 UTCJul 5, 21:10 UTC20m
2026-07-05 N194TH BFL → BFL Jul 5, 17:50 UTCJul 5, 19:30 UTC1h 40m
2026-07-05 N194TH - Jul 5, 17:00 UTCJul 5, 17:15 UTC15m
2026-07-05 N194TH - Jul 5, 15:35 UTCJul 5, 15:45 UTC10m
2026-07-05 N194TH - Jul 5, 14:50 UTCJul 5, 15:05 UTC15m
2026-07-05 N194TH - Jul 5, 13:30 UTCJul 5, 13:45 UTC15m
2026-07-03 N194TH BFL → BFL Jul 3, 22:40 UTCJul 3, 23:40 UTC1h 0m
2026-07-03 N194TH BFL → BFL Jul 3, 18:50 UTCJul 3, 19:25 UTC35m
2026-07-03 N194TH BFL → BFL Jul 3, 16:15 UTCJul 3, 17:30 UTC1h 15m
2026-07-03 N194TH BFL → BFL Jul 3, 05:30 UTCJul 3, 06:00 UTC30m
2026-07-02 N194TH BFL → BFL Jul 2, 23:15 UTCJul 3, 00:30 UTC1h 15m
2026-07-02 N194TH BFL → BFL Jul 2, 20:55 UTCJul 2, 21:50 UTC55m
2026-07-02 N194TH - Jul 2, 18:45 UTCJul 2, 19:10 UTC25m
2026-07-02 N194TH - Jul 2, 16:40 UTCJul 2, 17:05 UTC25m
2026-07-02 N194TH BFL → BFL Jul 2, 14:30 UTCJul 2, 15:50 UTC1h 20m
2026-07-02 N194TH BFL → BFL Jul 2, 04:05 UTCJul 2, 05:15 UTC1h 10m
2026-07-01 N194TH BFL → BFL Jul 1, 23:20 UTCJul 2, 00:25 UTC1h 5m
2026-07-01 N194TH BFL → BFL Jul 1, 18:25 UTCJul 1, 19:25 UTC1h 0m
2026-07-01 N194TH BFL → BFL Jul 1, 16:10 UTCJul 1, 17:25 UTC1h 15m
2026-07-01 N194TH - Jul 1, 15:05 UTCJul 1, 15:15 UTC10m
2026-07-01 N194TH - Jul 1, 13:25 UTCJul 1, 14:10 UTC45m
2026-07-01 N194TH BFL → BFL Jul 1, 03:30 UTCJul 1, 04:15 UTC45m
2026-07-01 N194TH - Jul 1, 01:25 UTCJul 1, 01:55 UTC30m
2026-07-01 N194TH BFL → BFL Jul 1, 01:10 UTCJul 1, 01:15 UTC5m
2026-06-30 N194TH BFL → BFL Jun 30, 20:50 UTCJun 30, 21:25 UTC35m
2026-06-30 N194TH BFL → BFL Jun 30, 18:40 UTCJun 30, 19:45 UTC1h 5m
2026-06-30 N194TH BFL → BFL Jun 30, 16:10 UTCJun 30, 17:05 UTC55m
2026-06-26 N194TH BFL → BFL Jun 26, 18:39 UTCJun 26, 19:24 UTC45m
2026-06-26 N194TH BFL → BFL Jun 26, 16:14 UTCJun 26, 17:15 UTC1h 0m
2026-06-26 N194TH BFL → BFL Jun 26, 03:05 UTCJun 26, 04:04 UTC1h 0m
2026-06-25 N194TH BFL → BFL Jun 25, 20:39 UTCJun 25, 22:14 UTC1h 35m
2026-06-25 N194TH BFL → BFL Jun 25, 17:44 UTCJun 25, 19:20 UTC1h 35m
2026-06-25 N194TH BFL → BFL Jun 25, 16:05 UTCJun 25, 16:55 UTC50m
2026-06-25 N194TH BFL → BFL Jun 25, 13:24 UTCJun 25, 15:04 UTC1h 40m
2026-06-24 N194TH BFL → BFL Jun 24, 18:25 UTCJun 24, 19:59 UTC1h 35m

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 N194TH page for operator, model, and routing details .

Mode-S A178B8 frequently asked

What is Mode-S code A178B8?
A178B8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N194TH.
Where is Mode-S A178B8 registered?
Mode-S code A178B8 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 A178B8 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A178B8, octal 50274270, decimal 10,582,200.
What flights does A178B8 operate?
Mode-S A178B8 has broadcast 1 distinct callsign, including N194TH.