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sensors Mode-S transponder

A6DEC4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N54151 · CESSNA 172 Skyhawk · operated by SILVER CITY FLYING CLUB INC

Hex
A6DEC4
Octal
51557304
Decimal
10,936,004
Country
US
Tail
N54151
Type
C172
No current signal · last broadcast Jun 30, 12:40 UTC
Flights observed
67
Distinct callsigns
1
Country
US
Last broadcast
Jun 30, 12:40 UTC

Last known position

Most recent position reported by Mode-S A6DEC4.

Country allocation

The ICAO 24-bit address A6DEC4 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
N54151 - 67 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-30 N54151 - Jun 30, 12:25 UTCJun 30, 12:40 UTC15m
2026-06-27 N54151 - Jun 27, 23:04 UTCJun 28, 00:00 UTC55m
2026-06-27 N54151 - Jun 27, 21:19 UTCJun 27, 21:44 UTC25m
2026-06-27 N54151 - Jun 27, 11:14 UTCJun 27, 11:55 UTC40m
2026-06-25 N54151 - Jun 25, 17:09 UTCJun 25, 18:24 UTC1h 15m
2026-06-25 N54151 - Jun 25, 15:50 UTCJun 25, 16:24 UTC35m
2026-06-25 N54151 - Jun 25, 14:14 UTCJun 25, 14:34 UTC20m
2026-06-24 N54151 - Jun 24, 23:59 UTCJun 25, 01:50 UTC1h 50m
2026-06-24 N54151 - Jun 24, 19:39 UTCJun 24, 21:34 UTC1h 55m
2026-06-24 N54151 - Jun 24, 18:05 UTCJun 24, 18:39 UTC35m
2026-06-24 N54151 - Jun 24, 15:29 UTCJun 24, 15:54 UTC25m
2026-06-24 N54151 - Jun 24, 13:44 UTCJun 24, 14:04 UTC20m
2026-06-21 N54151 - Jun 21, 22:29 UTCJun 22, 00:20 UTC1h 50m
2026-06-21 N54151 - Jun 21, 21:39 UTCJun 21, 21:49 UTC10m
2026-06-21 N54151 - Jun 21, 18:50 UTCJun 21, 21:05 UTC2h 15m
2026-06-19 N54151 - Jun 19, 18:49 UTCJun 19, 21:59 UTC3h 10m
2026-06-19 N54151 - Jun 19, 15:04 UTCJun 19, 17:24 UTC2h 20m
2026-06-14 N54151 - Jun 14, 21:05 UTCJun 14, 21:50 UTC45m
2026-06-14 N54151 - Jun 14, 17:55 UTCJun 14, 18:20 UTC25m
2026-06-14 N54151 - Jun 14, 16:40 UTCJun 14, 17:25 UTC45m
2026-06-14 N54151 - Jun 14, 00:05 UTCJun 14, 00:25 UTC20m
2026-06-13 N54151 - Jun 13, 21:30 UTCJun 13, 23:15 UTC1h 45m
2026-06-13 N54151 - Jun 13, 12:20 UTCJun 13, 14:05 UTC1h 45m
2026-06-13 N54151 - Jun 13, 10:50 UTCJun 13, 11:15 UTC25m
2026-06-12 N54151 - Jun 12, 13:30 UTCJun 12, 14:15 UTC45m
2026-06-12 N54151 - Jun 12, 12:30 UTCJun 12, 12:55 UTC25m
2026-06-11 N54151 - Jun 11, 21:45 UTCJun 11, 22:10 UTC25m
2026-06-11 N54151 - Jun 11, 20:20 UTCJun 11, 20:45 UTC25m
2026-06-11 N54151 - Jun 11, 19:30 UTCJun 11, 19:45 UTC15m
2026-06-09 N54151 - Jun 9, 21:40 UTCJun 9, 22:15 UTC35m
2026-06-09 N54151 - Jun 9, 20:00 UTCJun 9, 20:45 UTC45m
2026-06-07 N54151 - Jun 7, 18:50 UTCJun 7, 20:00 UTC1h 10m
2026-06-07 N54151 - Jun 7, 13:20 UTCJun 7, 14:10 UTC50m
2026-06-06 N54151 - Jun 6, 09:34 UTCJun 6, 11:05 UTC1h 30m
2026-06-05 N54151 - Jun 5, 16:15 UTCJun 5, 16:25 UTC10m
2026-06-01 N54151 - Jun 1, 23:25 UTCJun 1, 23:35 UTC10m
2026-05-27 N54151 - May 27, 19:05 UTCMay 27, 19:30 UTC25m
2026-05-27 N54151 - May 27, 18:10 UTCMay 27, 18:35 UTC25m
2026-05-27 N54151 - May 27, 17:20 UTCMay 27, 17:30 UTC10m
2026-05-23 N54151 - May 23, 15:25 UTCMay 23, 16:05 UTC40m
2026-05-23 N54151 - May 23, 13:30 UTCMay 23, 13:55 UTC25m
2026-05-22 N54151 - May 22, 23:35 UTCMay 23, 00:00 UTC25m
2026-05-22 N54151 - May 22, 21:10 UTCMay 22, 21:55 UTC45m
2026-05-19 N54151 - May 19, 12:05 UTCMay 19, 12:35 UTC30m
2026-05-18 N54151 - May 18, 19:25 UTCMay 18, 20:25 UTC1h 0m
2026-05-18 N54151 - May 18, 02:50 UTCMay 18, 03:25 UTC35m
2026-05-18 N54151 - May 18, 01:15 UTCMay 18, 02:10 UTC55m
2026-05-16 N54151 - May 16, 15:45 UTCMay 16, 16:15 UTC30m
2026-05-16 N54151 - May 16, 13:11 UTCMay 16, 13:41 UTC30m
2026-05-14 N54151 - May 14, 13:15 UTCMay 14, 15:50 UTC2h 35m

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 N54151 page for operator, model, and routing details .

Mode-S A6DEC4 frequently asked

What is Mode-S code A6DEC4?
A6DEC4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N54151.
Where is Mode-S A6DEC4 registered?
Mode-S code A6DEC4 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 A6DEC4 broadcasting right now?
No active broadcast right now. Last signal was Jun 30, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6DEC4, octal 51557304, decimal 10,936,004.
What flights does A6DEC4 operate?
Mode-S A6DEC4 has broadcast 1 distinct callsign, including N54151.