Apparatus

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sensors Mode-S transponder

A134CA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N177SM · CESSNA 177 Cardinal · operated by FREE STATE FLYING CLUB INC

Hex
A134CA
Octal
50232312
Decimal
10,564,810
Country
US
Tail
N177SM
Type
C177
No current signal · last broadcast 23h ago
Flights observed
70
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S A134CA.

Country allocation

The ICAO 24-bit address A134CA 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
N177SM - 70 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N177SM - Jul 13, 19:55 UTCJul 13, 20:40 UTC45m
2026-07-12 N177SM - Jul 12, 17:40 UTCJul 12, 19:35 UTC1h 55m
2026-07-12 N177SM - Jul 12, 16:05 UTCJul 12, 16:50 UTC45m
2026-07-10 N177SM - Jul 10, 13:30 UTCJul 10, 16:15 UTC2h 45m
2026-07-03 N177SM CGS → CGS Jul 3, 12:10 UTCJul 3, 13:05 UTC55m
2026-06-30 N177SM - Jun 30, 21:25 UTCJun 30, 23:40 UTC2h 15m
2026-06-30 N177SM - Jun 30, 18:55 UTCJun 30, 19:45 UTC50m
2026-06-29 N177SM - Jun 29, 21:34 UTCJun 29, 22:30 UTC55m
2026-06-29 N177SM - Jun 29, 17:55 UTCJun 29, 20:00 UTC2h 5m
2026-06-26 N177SM - Jun 26, 00:05 UTCJun 26, 00:35 UTC30m
2026-06-25 N177SM - Jun 25, 23:39 UTCJun 25, 23:59 UTC20m
2026-06-25 N177SM - Jun 25, 21:44 UTCJun 25, 22:04 UTC20m
2026-06-24 N177SM CGS → CGS Jun 24, 21:50 UTCJun 24, 23:29 UTC1h 40m
2026-06-23 N177SM CGS → CGS Jun 23, 23:14 UTCJun 24, 00:34 UTC1h 20m
2026-06-21 N177SM - Jun 21, 15:34 UTCJun 21, 18:00 UTC2h 25m
2026-06-20 N177SM - Jun 20, 16:09 UTCJun 20, 17:44 UTC1h 35m
2026-06-20 N177SM - Jun 20, 14:50 UTCJun 20, 15:39 UTC50m
2026-06-18 N177SM - Jun 18, 23:20 UTCJun 19, 00:10 UTC49m
2026-06-18 N177SM - Jun 18, 15:00 UTCJun 18, 15:35 UTC35m
2026-06-17 N177SM - Jun 17, 21:00 UTCJun 17, 23:10 UTC2h 10m
2026-06-16 N177SM CGS → CGS Jun 16, 22:00 UTCJun 16, 23:20 UTC1h 20m
2026-06-16 N177SM CGS → CGS Jun 16, 19:00 UTCJun 16, 20:05 UTC1h 6m
2026-06-16 N177SM - Jun 16, 17:45 UTCJun 16, 18:25 UTC40m
2026-06-16 N177SM - Jun 16, 16:05 UTCJun 16, 17:10 UTC1h 5m
2026-06-16 N177SM - Jun 16, 14:55 UTCJun 16, 15:05 UTC10m
2026-06-14 N177SM - Jun 14, 19:25 UTCJun 14, 21:35 UTC2h 10m
2026-06-14 N177SM - Jun 14, 16:00 UTCJun 14, 17:35 UTC1h 35m
2026-06-12 N177SM - Jun 12, 14:20 UTCJun 12, 17:20 UTC3h 0m
2026-06-08 N177SM - Jun 8, 01:50 UTCJun 8, 03:00 UTC1h 10m
2026-06-07 N177SM - Jun 7, 22:40 UTCJun 7, 23:10 UTC30m
2026-06-07 N177SM CGS → CGS Jun 7, 14:25 UTCJun 7, 15:45 UTC1h 20m
2026-06-06 N177SM FME → CGS Jun 6, 15:44 UTCJun 6, 15:54 UTC10m
2026-06-06 N177SM CGS → FME Jun 6, 14:09 UTCJun 6, 15:05 UTC55m
2026-06-01 N177SM CGS → CGS Jun 1, 22:50 UTCJun 2, 00:10 UTC1h 20m
2026-05-31 N177SM - May 31, 21:10 UTCMay 31, 21:55 UTC45m
2026-05-31 N177SM - May 31, 14:45 UTCMay 31, 15:45 UTC1h 0m
2026-05-31 N177SM CGS → CGS May 31, 12:25 UTCMay 31, 12:45 UTC20m
2026-05-30 N177SM CGS → CGS May 30, 21:40 UTCMay 30, 23:45 UTC2h 5m
2026-05-29 N177SM - May 29, 23:55 UTCMay 30, 00:40 UTC45m
2026-05-29 N177SM - May 29, 21:05 UTCMay 29, 21:45 UTC40m
2026-05-28 N177SM CGS → CGS May 28, 23:15 UTCMay 29, 00:00 UTC45m
2026-05-26 N177SM CGS → CGS May 26, 17:09 UTCMay 26, 17:44 UTC35m
2026-05-19 N177SM CGS → CGS May 19, 22:25 UTCMay 19, 23:35 UTC1h 10m
2026-05-17 N177SM CGS → CGS May 17, 18:50 UTCMay 17, 19:50 UTC1h 0m
2026-05-17 N177SM - May 17, 02:30 UTCMay 17, 03:35 UTC1h 5m
2026-05-17 N177SM CGS → FME May 17, 01:35 UTCMay 17, 01:45 UTC10m
2026-05-13 N177SM - May 13, 03:00 UTCMay 13, 04:10 UTC1h 10m
2026-05-13 N177SM - May 13, 01:10 UTCMay 13, 02:15 UTC1h 5m
2026-05-12 N177SM CGS → CGS May 12, 20:40 UTCMay 12, 23:05 UTC2h 25m
2026-05-12 N177SM OCE → CGS May 12, 17:55 UTCMay 12, 18:55 UTC1h 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 N177SM page for operator, model, and routing details .

Mode-S A134CA frequently asked

What is Mode-S code A134CA?
A134CA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N177SM.
Where is Mode-S A134CA registered?
Mode-S code A134CA 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 A134CA broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A134CA, octal 50232312, decimal 10,564,810.
What flights does A134CA operate?
Mode-S A134CA has broadcast 1 distinct callsign, including N177SM.