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sensors Mode-S transponder

A122C2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N172YA · CESSNA 172 Skyhawk · operated by CF IMAGES LLC

Hex
A122C2
Octal
50221302
Decimal
10,560,194
Country
US
Tail
N172YA
Type
C172
No current signal · last broadcast 10h ago
Flights observed
245
Distinct callsigns
1
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S A122C2.

Country allocation

The ICAO 24-bit address A122C2 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
N172YA - 245 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 N172YA - Jul 21, 01:40 UTCJul 21, 03:00 UTC1h 20m
2026-07-20 N172YA CDW → CDW Jul 20, 22:45 UTCJul 20, 23:55 UTC1h 9m
2026-07-20 N172YA - Jul 20, 20:45 UTCJul 20, 21:55 UTC1h 10m
2026-07-20 N172YA - Jul 20, 19:25 UTCJul 20, 19:55 UTC30m
2026-07-20 N172YA - Jul 20, 18:35 UTCJul 20, 18:50 UTC15m
2026-07-20 N172YA - Jul 20, 16:05 UTCJul 20, 17:10 UTC1h 5m
2026-07-20 N172YA - Jul 20, 13:45 UTCJul 20, 15:00 UTC1h 15m
2026-07-19 N172YA - Jul 19, 13:50 UTCJul 19, 15:00 UTC1h 10m
2026-07-17 N172YA CDW → CDW Jul 17, 22:25 UTCJul 17, 23:25 UTC1h 0m
2026-07-17 N172YA - Jul 17, 20:40 UTCJul 17, 21:34 UTC55m
2026-07-15 N172YA CDW → CDW Jul 15, 14:45 UTCJul 15, 15:15 UTC30m
2026-07-15 N172YA - Jul 15, 12:40 UTCJul 15, 13:45 UTC1h 5m
2026-07-14 N172YA - Jul 14, 20:30 UTCJul 14, 21:45 UTC1h 15m
2026-07-14 N172YA CDW → CDW Jul 14, 19:05 UTCJul 14, 19:55 UTC50m
2026-07-14 N172YA - Jul 14, 16:45 UTCJul 14, 18:00 UTC1h 15m
2026-07-14 N172YA - Jul 14, 14:40 UTCJul 14, 15:40 UTC1h 0m
2026-07-14 N172YA - Jul 14, 12:40 UTCJul 14, 13:45 UTC1h 5m
2026-07-13 N172YA - Jul 13, 19:50 UTCJul 13, 21:05 UTC1h 15m
2026-07-13 N172YA - Jul 13, 17:55 UTCJul 13, 19:05 UTC1h 10m
2026-07-13 N172YA - Jul 13, 15:40 UTCJul 13, 16:50 UTC1h 10m
2026-07-13 N172YA - Jul 13, 13:55 UTCJul 13, 14:55 UTC1h 0m
2026-07-13 N172YA - Jul 13, 11:35 UTCJul 13, 12:50 UTC1h 15m
2026-07-12 N172YA - Jul 12, 22:30 UTCJul 12, 22:50 UTC20m
2026-07-12 N172YA CDW → CDW Jul 12, 21:30 UTCJul 12, 22:25 UTC55m
2026-07-12 N172YA CDW → CDW Jul 12, 19:40 UTCJul 12, 20:45 UTC1h 5m
2026-07-12 N172YA - Jul 12, 17:35 UTCJul 12, 18:55 UTC1h 20m
2026-07-12 N172YA - Jul 12, 16:05 UTCJul 12, 16:50 UTC45m
2026-07-12 N172YA - Jul 12, 12:50 UTCJul 12, 14:35 UTC1h 45m
2026-07-11 N172YA CDW → CDW Jul 11, 18:50 UTCJul 11, 19:50 UTC1h 0m
2026-07-11 N172YA - Jul 11, 15:45 UTCJul 11, 16:45 UTC1h 0m
2026-07-11 N172YA - Jul 11, 13:30 UTCJul 11, 14:40 UTC1h 10m
2026-07-11 N172YA - Jul 11, 11:30 UTCJul 11, 12:35 UTC1h 5m
2026-07-10 N172YA - Jul 10, 14:30 UTCJul 10, 15:25 UTC55m
2026-07-10 N172YA CDW → CDW Jul 10, 13:00 UTCJul 10, 13:45 UTC45m
2026-07-09 N172YA - Jul 9, 14:35 UTCJul 9, 15:25 UTC50m
2026-07-09 N172YA - Jul 9, 12:40 UTCJul 9, 13:50 UTC1h 10m
2026-07-08 N172YA - Jul 8, 23:25 UTCJul 9, 00:40 UTC1h 15m
2026-07-08 N172YA - Jul 8, 20:45 UTCJul 8, 21:40 UTC55m
2026-07-08 N172YA - Jul 8, 19:05 UTCJul 8, 19:35 UTC30m
2026-07-08 N172YA - Jul 8, 18:00 UTCJul 8, 18:25 UTC25m
2026-07-08 N172YA - Jul 8, 15:55 UTCJul 8, 17:05 UTC1h 10m
2026-07-08 N172YA - Jul 8, 12:50 UTCJul 8, 13:45 UTC55m
2026-07-05 N172YA CDW → CDW Jul 5, 15:50 UTCJul 5, 17:40 UTC1h 50m
2026-07-04 N172YA - Jul 4, 16:40 UTCJul 4, 17:40 UTC1h 0m
2026-07-04 N172YA CDW → CDW Jul 4, 14:45 UTCJul 4, 15:45 UTC1h 0m
2026-07-03 N172YA - Jul 3, 16:30 UTCJul 3, 17:50 UTC1h 20m
2026-07-03 N172YA - Jul 3, 14:35 UTCJul 3, 15:45 UTC1h 10m
2026-07-03 N172YA - Jul 3, 12:35 UTCJul 3, 13:45 UTC1h 10m
2026-07-02 N172YA - Jul 2, 15:45 UTCJul 2, 16:50 UTC1h 5m
2026-07-02 N172YA CDW → CDW Jul 2, 13:40 UTCJul 2, 14:45 UTC1h 5m

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 N172YA page for operator, model, and routing details .

Mode-S A122C2 frequently asked

What is Mode-S code A122C2?
A122C2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N172YA.
Where is Mode-S A122C2 registered?
Mode-S code A122C2 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 A122C2 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A122C2, octal 50221302, decimal 10,560,194.
What flights does A122C2 operate?
Mode-S A122C2 has broadcast 1 distinct callsign, including N172YA.