Apparatus

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sensors Mode-S transponder

A54C15

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N440RA · CESSNA 212 Aviocar · operated by RYAN AIR INC

Hex
A54C15
Octal
51246025
Decimal
10,832,917
Country
US
Tail
N440RA
Type
C212
No current signal · last broadcast 10h ago
Flights observed
103
Distinct callsigns
1
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S A54C15.

Country allocation

The ICAO 24-bit address A54C15 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
N440RA - 103 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 N440RA - Jun 23, 02:40 UTCJun 23, 03:09 UTC30m
2026-06-23 N440RA - Jun 23, 01:15 UTCJun 23, 01:40 UTC25m
2026-06-22 N440RA - Jun 22, 23:05 UTCJun 22, 23:45 UTC40m
2026-06-22 N440RA - Jun 22, 21:14 UTCJun 22, 21:45 UTC30m
2026-06-20 N440RA - Jun 20, 03:19 UTCJun 20, 03:49 UTC30m
2026-06-20 N440RA - Jun 20, 01:55 UTCJun 20, 02:24 UTC30m
2026-06-20 N440RA - Jun 20, 00:09 UTCJun 20, 00:44 UTC35m
2026-06-19 N440RA - Jun 19, 22:09 UTCJun 19, 22:39 UTC30m
2026-06-19 N440RA - Jun 19, 19:59 UTCJun 19, 20:34 UTC35m
2026-06-19 N440RA - Jun 19, 18:25 UTCJun 19, 18:49 UTC25m
2026-06-19 N440RA - Jun 19, 01:19 UTCJun 19, 01:59 UTC40m
2026-06-18 N440RA - Jun 18, 23:30 UTCJun 19, 00:00 UTC30m
2026-06-18 N440RA - Jun 18, 20:35 UTCJun 18, 21:50 UTC1h 15m
2026-06-18 N440RA ANC → TCT Jun 18, 18:40 UTCJun 18, 19:55 UTC1h 15m
2026-06-16 N440RA - Jun 16, 22:35 UTCJun 16, 23:05 UTC30m
2026-06-16 N440RA - Jun 16, 20:55 UTCJun 16, 21:25 UTC30m
2026-06-16 N440RA AKN → ANC Jun 16, 01:25 UTCJun 16, 03:25 UTC2h 0m
2026-06-15 N440RA ANC → AKN Jun 15, 23:04 UTCJun 16, 00:35 UTC1h 30m
2026-06-15 N440RA - Jun 15, 20:45 UTCJun 15, 21:35 UTC50m
2026-06-15 N440RA - Jun 15, 19:00 UTCJun 15, 19:25 UTC25m
2026-06-12 N440RA - Jun 12, 01:05 UTCJun 12, 02:15 UTC1h 10m
2026-06-11 N440RA - Jun 11, 23:40 UTCJun 12, 00:05 UTC25m
2026-06-11 N440RA - Jun 11, 19:25 UTCJun 11, 20:50 UTC1h 25m
2026-06-11 N440RA AKN → ANC Jun 11, 02:45 UTCJun 11, 04:20 UTC1h 35m
2026-06-11 N440RA - Jun 11, 01:30 UTCJun 11, 02:00 UTC30m
2026-06-10 N440RA - Jun 10, 23:55 UTCJun 11, 00:05 UTC10m
2026-06-10 N440RA ANC → AKN Jun 10, 21:05 UTCJun 10, 22:35 UTC1h 30m
2026-06-10 N440RA ANC → ANC Jun 10, 00:35 UTCJun 10, 00:50 UTC15m
2026-06-09 N440RA ANC → ANC Jun 9, 23:00 UTCJun 9, 23:25 UTC25m
2026-06-02 N440RA - Jun 2, 20:10 UTCJun 2, 20:45 UTC35m
2026-06-02 N440RA - Jun 2, 18:35 UTCJun 2, 19:05 UTC30m
2026-05-30 N440RA - May 30, 18:30 UTCMay 30, 18:55 UTC25m
2026-05-30 N440RA - May 30, 17:15 UTCMay 30, 17:40 UTC25m
2026-05-29 N440RA - May 29, 19:35 UTCMay 29, 20:05 UTC30m
2026-05-29 N440RA - May 29, 18:05 UTCMay 29, 18:30 UTC25m
2026-05-29 N440RA - May 29, 00:50 UTCMay 29, 01:15 UTC25m
2026-05-28 N440RA - May 28, 23:30 UTCMay 28, 23:55 UTC25m
2026-05-28 N440RA - May 28, 19:45 UTCMay 28, 20:15 UTC30m
2026-05-28 N440RA - May 28, 17:55 UTCMay 28, 18:20 UTC25m
2026-05-27 N440RA - May 27, 01:39 UTCMay 27, 03:04 UTC1h 25m
2026-05-26 N440RA - May 26, 23:39 UTCMay 27, 00:34 UTC55m
2026-05-26 N440RA - May 26, 21:14 UTCMay 26, 22:20 UTC1h 5m
2026-05-26 N440RA - May 26, 18:45 UTCMay 26, 19:40 UTC55m
2026-05-18 N440RA - May 18, 23:10 UTCMay 19, 00:45 UTC1h 35m
2026-05-18 N440RA - May 18, 21:55 UTCMay 18, 22:40 UTC45m
2026-05-18 N440RA - May 18, 19:30 UTCMay 18, 19:50 UTC20m
2026-05-18 N440RA ANC → AKN May 18, 17:20 UTCMay 18, 19:25 UTC2h 4m
2026-05-16 N440RA - May 16, 04:10 UTCMay 16, 05:20 UTC1h 10m
2026-05-16 N440RA - May 16, 02:30 UTCMay 16, 02:55 UTC25m
2026-05-15 N440RA - May 15, 23:55 UTCMay 16, 00:25 UTC30m

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 N440RA page for operator, model, and routing details .

Mode-S A54C15 frequently asked

What is Mode-S code A54C15?
A54C15 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N440RA.
Where is Mode-S A54C15 registered?
Mode-S code A54C15 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 A54C15 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 A54C15, octal 51246025, decimal 10,832,917.
What flights does A54C15 operate?
Mode-S A54C15 has broadcast 1 distinct callsign, including N440RA.