Apparatus

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sensors Mode-S transponder

A1C7A2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2134Y · CESSNA 172 Skyhawk · operated by HI LINE FLYING CLUB INC

Hex
A1C7A2
Octal
50343642
Decimal
10,602,402
Country
US
Tail
N2134Y
Type
C172
No current signal · last broadcast 27d ago
Flights observed
94
Distinct callsigns
1
Country
US
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S A1C7A2.

Country allocation

The ICAO 24-bit address A1C7A2 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
N2134Y - 94 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 N2134Y RNT → RNT Jul 24, 23:20 UTCJul 24, 23:35 UTC15m
2026-07-24 N2134Y - Jul 24, 01:45 UTCJul 24, 02:15 UTC30m
2026-07-24 N2134Y - Jul 24, 00:25 UTCJul 24, 01:05 UTC40m
2026-07-23 N2134Y - Jul 23, 22:30 UTCJul 23, 23:30 UTC1h 0m
2026-07-22 N2134Y - Jul 22, 23:15 UTCJul 23, 00:00 UTC45m
2026-07-21 N2134Y - Jul 21, 19:05 UTCJul 21, 19:45 UTC40m
2026-07-20 N2134Y - Jul 20, 22:45 UTCJul 21, 00:05 UTC1h 19m
2026-07-19 N2134Y FRD → RNT Jul 19, 22:20 UTCJul 19, 23:00 UTC40m
2026-07-19 N2134Y - Jul 19, 19:40 UTCJul 19, 20:25 UTC45m
2026-07-19 N2134Y - Jul 19, 18:45 UTCJul 19, 19:00 UTC15m
2026-07-19 N2134Y - Jul 19, 17:05 UTCJul 19, 17:25 UTC20m
2026-07-15 N2134Y RNT → RNT Jul 15, 05:20 UTCJul 15, 05:30 UTC10m
2026-07-15 N2134Y RNT → RNT Jul 15, 03:55 UTCJul 15, 05:15 UTC1h 20m
2026-07-14 N2134Y - Jul 14, 23:15 UTCJul 14, 23:40 UTC25m
2026-07-14 N2134Y - Jul 14, 20:50 UTCJul 14, 21:20 UTC30m
2026-07-14 N2134Y CKR → RNT Jul 14, 02:10 UTCJul 14, 03:05 UTC55m
2026-07-13 N2134Y RNT → FRD Jul 13, 23:45 UTCJul 14, 00:30 UTC45m
2026-07-13 N2134Y - Jul 13, 20:50 UTCJul 13, 21:00 UTC10m
2026-07-13 N2134Y - Jul 13, 19:10 UTCJul 13, 19:25 UTC15m
2026-07-12 N2134Y - Jul 12, 19:55 UTCJul 12, 20:20 UTC25m
2026-07-10 N2134Y - Jul 10, 19:15 UTCJul 10, 20:40 UTC1h 25m
2026-07-09 N2134Y RNT → RNT Jul 9, 21:10 UTCJul 9, 22:35 UTC1h 25m
2026-07-08 N2134Y - Jul 8, 23:05 UTCJul 9, 00:30 UTC1h 25m
2026-07-08 N2134Y RNT → RNT Jul 8, 20:40 UTCJul 8, 21:10 UTC30m
2026-07-08 N2134Y - Jul 8, 02:45 UTCJul 8, 03:20 UTC35m
2026-07-06 N2134Y - Jul 6, 18:55 UTCJul 6, 19:40 UTC45m
2026-07-06 N2134Y RNT → RNT Jul 6, 15:55 UTCJul 6, 17:25 UTC1h 30m
2026-07-06 N2134Y - Jul 6, 00:10 UTCJul 6, 00:45 UTC35m
2026-07-05 N2134Y RNT → MVW Jul 5, 22:25 UTCJul 5, 23:05 UTC40m
2026-07-05 N2134Y - Jul 5, 19:00 UTCJul 5, 19:55 UTC55m
2026-07-05 N2134Y - Jul 5, 02:05 UTCJul 5, 03:55 UTC1h 50m
2026-07-04 N2134Y - Jul 4, 20:20 UTCJul 4, 21:50 UTC1h 30m
2026-07-04 N2134Y - Jul 4, 19:40 UTCJul 4, 19:50 UTC10m
2026-07-04 N2134Y - Jul 4, 17:35 UTCJul 4, 18:20 UTC45m
2026-07-01 N2134Y - Jul 1, 21:55 UTCJul 1, 22:40 UTC45m
2026-07-01 N2134Y - Jul 1, 18:05 UTCJul 1, 19:40 UTC1h 35m
2026-07-01 N2134Y - Jul 1, 02:30 UTCJul 1, 02:40 UTC10m
2026-06-30 N2134Y - Jun 30, 22:40 UTCJul 1, 00:30 UTC1h 50m
2026-06-27 N2134Y - Jun 27, 18:09 UTCJun 27, 18:45 UTC35m
2026-06-27 N2134Y - Jun 27, 17:39 UTCJun 27, 17:59 UTC20m
2026-06-25 N2134Y - Jun 25, 19:44 UTCJun 25, 20:09 UTC25m
2026-06-24 N2134Y - Jun 24, 16:50 UTCJun 24, 17:29 UTC40m
2026-06-24 N2134Y - Jun 24, 15:24 UTCJun 24, 16:05 UTC40m
2026-06-23 N2134Y RNT → RNT Jun 23, 18:14 UTCJun 23, 19:15 UTC1h 0m
2026-06-22 N2134Y - Jun 22, 17:44 UTCJun 22, 19:05 UTC1h 20m
2026-06-22 N2134Y - Jun 22, 15:35 UTCJun 22, 16:29 UTC55m
2026-06-21 N2134Y - Jun 21, 15:54 UTCJun 21, 18:14 UTC2h 20m
2026-06-20 N2134Y - Jun 20, 18:40 UTCJun 20, 20:14 UTC1h 35m
2026-06-15 N2134Y - Jun 15, 16:40 UTCJun 15, 17:10 UTC30m
2026-06-15 N2134Y - Jun 15, 15:19 UTCJun 15, 15:30 UTC10m

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 N2134Y page for operator, model, and routing details .

Mode-S A1C7A2 frequently asked

What is Mode-S code A1C7A2?
A1C7A2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2134Y.
Where is Mode-S A1C7A2 registered?
Mode-S code A1C7A2 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 A1C7A2 broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1C7A2, octal 50343642, decimal 10,602,402.
What flights does A1C7A2 operate?
Mode-S A1C7A2 has broadcast 1 distinct callsign, including N2134Y.