Apparatus

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sensors Mode-S transponder

A6B39A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5306C · CESSNA 172 Skyhawk · operated by SO CAL LEASING LLC

Hex
A6B39A
Octal
51531632
Decimal
10,924,954
Country
US
Tail
N5306C
Type
C172
No current signal · last broadcast 2d ago
Flights observed
91
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A6B39A.

Country allocation

The ICAO 24-bit address A6B39A 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
N5306C - 91 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 N5306C SEE → SEE Jul 11, 18:25 UTCJul 11, 19:40 UTC1h 15m
2026-07-09 N5306C SEE → SEE Jul 9, 23:00 UTCJul 10, 00:05 UTC1h 5m
2026-07-09 N5306C SEE → SEE Jul 9, 18:05 UTCJul 9, 19:00 UTC55m
2026-07-08 N5306C SEE → SEE Jul 8, 17:55 UTCJul 8, 19:45 UTC1h 50m
2026-07-07 N5306C SEE → SEE Jul 7, 20:25 UTCJul 7, 21:35 UTC1h 10m
2026-07-06 N5306C - Jul 6, 21:50 UTCJul 6, 22:45 UTC55m
2026-07-03 N5306C - Jul 3, 17:45 UTCJul 3, 18:40 UTC55m
2026-07-03 N5306C SEE → SEE Jul 3, 15:50 UTCJul 3, 16:50 UTC1h 0m
2026-07-02 N5306C - Jul 2, 19:50 UTCJul 2, 21:05 UTC1h 15m
2026-06-30 N5306C - Jun 30, 19:55 UTCJun 30, 21:10 UTC1h 15m
2026-06-29 N5306C SEE → SEE Jun 29, 20:09 UTCJun 29, 20:54 UTC45m
2026-06-27 N5306C SEE → SEE Jun 27, 21:59 UTCJun 27, 23:04 UTC1h 5m
2026-06-27 N5306C SEE → SEE Jun 27, 18:04 UTCJun 27, 18:54 UTC50m
2026-06-25 N5306C SEE → SEE Jun 25, 22:04 UTCJun 25, 23:24 UTC1h 20m
2026-06-25 N5306C SEE → SEE Jun 25, 17:39 UTCJun 25, 18:50 UTC1h 10m
2026-06-24 N5306C SEE → SEE Jun 24, 21:54 UTCJun 24, 23:10 UTC1h 15m
2026-06-24 N5306C - Jun 24, 19:49 UTCJun 24, 21:09 UTC1h 20m
2026-06-23 N5306C - Jun 23, 00:15 UTCJun 23, 01:35 UTC1h 20m
2026-06-12 N5306C - Jun 12, 21:45 UTCJun 12, 22:55 UTC1h 10m
2026-06-12 N5306C - Jun 12, 18:10 UTCJun 12, 19:00 UTC50m
2026-06-12 N5306C - Jun 12, 15:40 UTCJun 12, 17:00 UTC1h 20m
2026-06-11 N5306C - Jun 11, 20:20 UTCJun 11, 20:50 UTC30m
2026-06-11 N5306C - Jun 11, 17:40 UTCJun 11, 18:55 UTC1h 15m
2026-06-11 N5306C SEE → SEE Jun 11, 00:45 UTCJun 11, 01:40 UTC55m
2026-06-10 N5306C - Jun 10, 21:45 UTCJun 10, 23:10 UTC1h 25m
2026-06-10 N5306C - Jun 10, 20:10 UTCJun 10, 20:55 UTC45m
2026-06-10 N5306C - Jun 10, 17:40 UTCJun 10, 18:50 UTC1h 10m
2026-06-09 N5306C - Jun 9, 17:50 UTCJun 9, 18:50 UTC1h 0m
2026-06-08 N5306C - Jun 8, 18:10 UTCJun 8, 19:25 UTC1h 15m
2026-06-07 N5306C - Jun 7, 17:55 UTCJun 7, 19:00 UTC1h 5m
2026-06-05 N5306C - Jun 5, 20:25 UTCJun 5, 21:00 UTC35m
2026-06-04 N5306C - Jun 4, 22:40 UTCJun 5, 00:05 UTC1h 25m
2026-06-04 N5306C - Jun 4, 20:05 UTCJun 4, 20:55 UTC50m
2026-06-04 N5306C SEE → SEE Jun 4, 17:45 UTCJun 4, 18:50 UTC1h 5m
2026-06-03 N5306C - Jun 3, 18:05 UTCJun 3, 19:00 UTC55m
2026-06-01 N5306C SEE → SEE Jun 1, 20:00 UTCJun 1, 20:45 UTC45m
2026-06-01 N5306C SEE → SEE Jun 1, 18:05 UTCJun 1, 18:40 UTC35m
2026-05-31 N5306C - May 31, 17:55 UTCMay 31, 18:10 UTC15m
2026-05-31 N5306C - May 31, 16:55 UTCMay 31, 17:20 UTC25m
2026-05-29 N5306C SEE → SEE May 29, 22:00 UTCMay 29, 22:50 UTC50m
2026-05-29 N5306C SEE → SEE May 29, 20:00 UTCMay 29, 20:55 UTC55m
2026-05-29 N5306C - May 29, 00:50 UTCMay 29, 01:55 UTC1h 5m
2026-05-25 N5306C SEE → SEE May 25, 21:45 UTCMay 25, 22:40 UTC55m
2026-05-24 N5306C SEE → SEE May 24, 00:15 UTCMay 24, 01:05 UTC50m
2026-05-21 N5306C - May 21, 00:20 UTCMay 21, 01:45 UTC1h 25m
2026-05-20 N5306C SEE → SEE May 20, 00:10 UTCMay 20, 01:10 UTC1h 0m
2026-05-19 N5306C - May 19, 21:40 UTCMay 19, 22:15 UTC35m
2026-05-19 N5306C - May 19, 17:40 UTCMay 19, 19:05 UTC1h 25m
2026-05-19 N5306C - May 19, 00:25 UTCMay 19, 01:25 UTC1h 0m
2026-05-18 N5306C - May 18, 22:05 UTCMay 18, 23:15 UTC1h 10m

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 N5306C page for operator, model, and routing details .

Mode-S A6B39A frequently asked

What is Mode-S code A6B39A?
A6B39A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5306C.
Where is Mode-S A6B39A registered?
Mode-S code A6B39A 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 A6B39A broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6B39A, octal 51531632, decimal 10,924,954.
What flights does A6B39A operate?
Mode-S A6B39A has broadcast 1 distinct callsign, including N5306C.