Apparatus

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sensors Mode-S transponder

A6B39C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5306E · CESSNA 172 Skyhawk · operated by N5306E LLC

Hex
A6B39C
Octal
51531634
Decimal
10,924,956
Country
US
Tail
N5306E
Type
C172
No current signal · last broadcast 48m ago
Flights observed
144
Distinct callsigns
1
Country
US
Last broadcast
48m ago

Last known position

Most recent position reported by Mode-S A6B39C.

Country allocation

The ICAO 24-bit address A6B39C 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
N5306E - 143 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-25 N5306E - Jun 25, 22:24 UTCJun 25, 22:59 UTC35m
2026-06-25 N5306E - Jun 25, 20:14 UTCJun 25, 21:15 UTC1h 0m
2026-06-25 N5306E - Jun 25, 18:55 UTCJun 25, 19:20 UTC25m
2026-06-25 N5306E - Jun 25, 17:34 UTCJun 25, 17:54 UTC20m
2026-06-22 N5306E - Jun 22, 18:44 UTCJun 22, 19:19 UTC35m
2026-06-22 N5306E - Jun 22, 15:35 UTCJun 22, 15:45 UTC10m
2026-06-22 N5306E - Jun 22, 12:54 UTCJun 22, 14:19 UTC1h 25m
2026-06-21 N5306E - Jun 21, 22:54 UTCJun 21, 23:44 UTC50m
2026-06-21 N5306E - Jun 21, 20:24 UTCJun 21, 21:34 UTC1h 10m
2026-06-21 N5306E - Jun 21, 13:34 UTCJun 21, 14:59 UTC1h 25m
2026-06-21 N5306E - Jun 21, 12:19 UTCJun 21, 12:49 UTC30m
2026-06-20 N5306E - Jun 20, 14:59 UTCJun 20, 15:54 UTC55m
2026-06-20 N5306E - Jun 20, 12:50 UTCJun 20, 13:39 UTC50m
2026-06-17 N5306E - Jun 17, 19:25 UTCJun 17, 20:15 UTC50m
2026-06-17 N5306E - Jun 17, 16:45 UTCJun 17, 17:45 UTC1h 0m
2026-06-17 N5306E - Jun 17, 13:55 UTCJun 17, 15:46 UTC1h 50m
2026-06-17 N5306E - Jun 17, 11:55 UTCJun 17, 12:45 UTC50m
2026-06-16 N5306E - Jun 16, 20:30 UTCJun 16, 21:10 UTC40m
2026-06-16 N5306E - Jun 16, 17:59 UTCJun 16, 19:19 UTC1h 20m
2026-06-16 N5306E - Jun 16, 15:00 UTCJun 16, 16:30 UTC1h 30m
2026-06-16 N5306E - Jun 16, 11:55 UTCJun 16, 12:50 UTC55m
2026-06-16 N5306E - Jun 16, 02:54 UTCJun 16, 03:39 UTC45m
2026-06-16 N5306E - Jun 16, 01:19 UTCJun 16, 02:09 UTC50m
2026-06-15 N5306E - Jun 15, 22:20 UTCJun 15, 23:09 UTC50m
2026-06-15 N5306E - Jun 15, 19:50 UTCJun 15, 20:59 UTC1h 10m
2026-06-15 N5306E - Jun 15, 18:10 UTCJun 15, 18:35 UTC25m
2026-06-15 N5306E - Jun 15, 16:49 UTCJun 15, 17:20 UTC30m
2026-06-15 N5306E - Jun 15, 13:00 UTCJun 15, 14:20 UTC1h 20m
2026-06-15 N5306E - Jun 15, 10:55 UTCJun 15, 11:49 UTC55m
2026-06-14 N5306E - Jun 14, 15:00 UTCJun 14, 15:25 UTC25m
2026-06-14 N5306E - Jun 14, 13:10 UTCJun 14, 13:50 UTC40m
2026-06-13 N5306E - Jun 13, 21:25 UTCJun 13, 22:25 UTC1h 0m
2026-06-13 N5306E - Jun 13, 16:50 UTCJun 13, 17:40 UTC50m
2026-06-13 N5306E - Jun 13, 14:30 UTCJun 13, 15:00 UTC30m
2026-06-12 N5306E - Jun 12, 19:05 UTCJun 12, 19:50 UTC45m
2026-06-12 N5306E - Jun 12, 15:20 UTCJun 12, 17:20 UTC2h 0m
2026-06-12 N5306E - Jun 12, 12:25 UTCJun 12, 13:20 UTC55m
2026-06-09 N5306E - Jun 9, 18:20 UTCJun 9, 19:10 UTC50m
2026-06-08 N5306E - Jun 8, 18:45 UTCJun 8, 19:50 UTC1h 5m
2026-06-07 N5306E - Jun 7, 18:55 UTCJun 7, 19:20 UTC25m
2026-06-06 N5306E - Jun 6, 12:00 UTCJun 6, 12:54 UTC55m
2026-06-05 N5306E - Jun 5, 22:50 UTCJun 5, 23:40 UTC50m
2026-06-05 N5306E - Jun 5, 20:45 UTCJun 5, 21:30 UTC45m
2026-06-05 N5306E - Jun 5, 18:00 UTCJun 5, 19:00 UTC1h 0m
2026-06-03 N5306E - Jun 3, 20:15 UTCJun 3, 21:25 UTC1h 10m
2026-06-01 N5306E - Jun 1, 20:15 UTCJun 1, 20:35 UTC20m
2026-06-01 N5306E - Jun 1, 18:45 UTCJun 1, 19:00 UTC15m
2026-05-31 N5306E - May 31, 18:35 UTCMay 31, 20:10 UTC1h 35m
2026-05-31 N5306E - May 31, 15:10 UTCMay 31, 15:55 UTC45m
2026-05-31 N5306E - May 31, 12:55 UTCMay 31, 13:45 UTC50m

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 N5306E page for operator, model, and routing details .

Mode-S A6B39C frequently asked

What is Mode-S code A6B39C?
A6B39C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5306E.
Where is Mode-S A6B39C registered?
Mode-S code A6B39C 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 A6B39C broadcasting right now?
No active broadcast right now. Last signal was 48m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6B39C, octal 51531634, decimal 10,924,956.
What flights does A6B39C operate?
Mode-S A6B39C has broadcast 1 distinct callsign, including N5306E.