Apparatus

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sensors Mode-S transponder

A4FC13

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N420ER · CESSNA 172R Cutlass RG · operated by ATP AIRCRAFT 2 LLC

Hex
A4FC13
Octal
51176023
Decimal
10,812,435
Country
US
Tail
N420ER
Type
C72R
No current signal · last broadcast 7d ago
Flights observed
106
Distinct callsigns
1
Country
US
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S A4FC13.

Country allocation

The ICAO 24-bit address A4FC13 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
CXK294 - 106 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-06 CXK294 - Jul 6, 16:35 UTCJul 6, 17:50 UTC1h 15m
2026-07-03 CXK294 - Jul 3, 20:00 UTCJul 3, 20:30 UTC30m
2026-07-03 CXK294 - Jul 3, 18:55 UTCJul 3, 19:20 UTC25m
2026-07-03 CXK294 - Jul 3, 00:25 UTCJul 3, 01:55 UTC1h 30m
2026-07-02 CXK294 - Jul 2, 13:55 UTCJul 2, 14:45 UTC50m
2026-06-26 CXK294 - Jun 26, 15:34 UTCJun 26, 16:14 UTC40m
2026-06-26 CXK294 - Jun 26, 13:55 UTCJun 26, 14:29 UTC35m
2026-06-25 CXK294 - Jun 25, 19:09 UTCJun 25, 19:20 UTC10m
2026-06-25 CXK294 - Jun 25, 17:54 UTCJun 25, 18:10 UTC15m
2026-06-25 CXK294 - Jun 25, 15:29 UTCJun 25, 16:24 UTC55m
2026-06-25 CXK294 - Jun 25, 13:29 UTCJun 25, 14:39 UTC1h 10m
2026-06-05 CXK294 - Jun 5, 20:30 UTCJun 5, 21:40 UTC1h 10m
2026-06-05 CXK294 - Jun 5, 18:05 UTCJun 5, 18:35 UTC30m
2026-06-04 CXK294 - Jun 4, 16:45 UTCJun 4, 17:55 UTC1h 10m
2026-06-04 CXK294 - Jun 4, 13:35 UTCJun 4, 14:00 UTC25m
2026-06-04 CXK294 RAL → RAL Jun 4, 02:15 UTCJun 4, 02:45 UTC30m
2026-06-04 CXK294 RAL → RAL Jun 4, 01:40 UTCJun 4, 02:10 UTC30m
2026-06-02 CXK294 RAL → RAL Jun 2, 20:15 UTCJun 2, 20:55 UTC40m
2026-06-02 CXK294 RAL → RAL Jun 2, 19:35 UTCJun 2, 20:10 UTC35m
2026-06-02 CXK294 - Jun 2, 18:35 UTCJun 2, 18:55 UTC20m
2026-06-02 CXK294 RAL → RAL Jun 2, 18:15 UTCJun 2, 18:25 UTC10m
2026-06-01 CXK294 RAL → RAL Jun 1, 23:25 UTCJun 2, 00:40 UTC1h 15m
2026-06-01 CXK294 RAL → RAL Jun 1, 17:15 UTCJun 1, 19:10 UTC1h 55m
2026-06-01 CXK294 - Jun 1, 13:20 UTCJun 1, 13:30 UTC10m
2026-05-31 CXK294 - May 31, 17:30 UTCMay 31, 19:00 UTC1h 30m
2026-05-31 CXK294 RAL → RAL May 31, 17:05 UTCMay 31, 17:15 UTC10m
2026-05-30 CXK294 RAL → RAL May 30, 23:00 UTCMay 30, 23:40 UTC40m
2026-05-30 CXK294 RAL → RAL May 30, 18:25 UTCMay 30, 19:15 UTC50m
2026-05-30 CXK294 - May 30, 16:00 UTCMay 30, 17:25 UTC1h 25m
2026-05-30 CXK294 RAL → RAL May 30, 04:05 UTCMay 30, 05:40 UTC1h 35m
2026-05-29 CXK294 - May 29, 22:25 UTCMay 29, 23:20 UTC55m
2026-05-29 CXK294 RAL → RAL May 29, 01:20 UTCMay 29, 02:05 UTC45m
2026-05-28 CXK294 RAL → RAL May 28, 22:25 UTCMay 28, 23:35 UTC1h 10m
2026-05-28 CXK294 - May 28, 15:30 UTCMay 28, 16:10 UTC40m
2026-05-28 CXK294 RAL → RAL May 28, 14:25 UTCMay 28, 14:35 UTC10m
2026-05-28 CXK294 RAL → RAL May 28, 14:05 UTCMay 28, 14:20 UTC15m
2026-05-27 CXK294 RAL → RAL May 27, 15:50 UTCMay 27, 16:25 UTC35m
2026-05-26 CXK294 RAL → RAL May 26, 21:14 UTCMay 26, 21:40 UTC25m
2026-05-26 CXK294 RAL → RAL May 26, 19:20 UTCMay 26, 20:00 UTC40m
2026-05-25 CXK294 - May 25, 22:30 UTCMay 25, 23:24 UTC55m
2026-05-25 CXK294 RAL → RAL May 25, 18:50 UTCMay 25, 20:40 UTC1h 49m
2026-05-25 CXK294 RAL → RAL May 25, 17:30 UTCMay 25, 17:45 UTC15m
2026-05-25 CXK294 RAL → RAL May 25, 16:55 UTCMay 25, 17:00 UTC5m
2026-05-25 CXK294 RAL → RAL May 25, 15:25 UTCMay 25, 15:50 UTC25m
2026-05-24 CXK294 - May 24, 21:40 UTCMay 24, 21:45 UTC5m
2026-05-24 CXK294 - May 24, 19:55 UTCMay 24, 20:05 UTC10m
2026-05-24 CXK294 RAL → RAL May 24, 19:35 UTCMay 24, 19:50 UTC15m
2026-05-24 CXK294 RAL → RAL May 24, 16:55 UTCMay 24, 17:20 UTC25m
2026-05-24 CXK294 SBD → RAL May 24, 04:35 UTCMay 24, 04:45 UTC10m
2026-05-24 CXK294 RAL → SBD May 24, 01:00 UTCMay 24, 03:05 UTC2h 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 N420ER page for operator, model, and routing details .

Mode-S A4FC13 frequently asked

What is Mode-S code A4FC13?
A4FC13 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N420ER.
Where is Mode-S A4FC13 registered?
Mode-S code A4FC13 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 A4FC13 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4FC13, octal 51176023, decimal 10,812,435.
What flights does A4FC13 operate?
Mode-S A4FC13 has broadcast 1 distinct callsign, including CXK294.