Apparatus

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sensors Mode-S transponder

A6B406

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5309F · CESSNA 172 Skyhawk · operated by MEDARY AVIATION LLC

Hex
A6B406
Octal
51532006
Decimal
10,925,062
Country
US
Tail
N5309F
Type
C172
No current signal · last broadcast 14d ago
Flights observed
138
Distinct callsigns
1
Country
US
Last broadcast
14d ago

Last known position

Most recent position reported by Mode-S A6B406.

Country allocation

The ICAO 24-bit address A6B406 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
N5309F - 138 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N5309F BKX → BKX Jul 23, 20:35 UTCJul 23, 21:40 UTC1h 5m
2026-07-23 N5309F BKX → BKX Jul 23, 18:40 UTCJul 23, 19:45 UTC1h 5m
2026-07-23 N5309F BKX → BKX Jul 23, 13:40 UTCJul 23, 14:40 UTC1h 0m
2026-07-20 N5309F BKX → BKX Jul 20, 13:55 UTCJul 20, 14:40 UTC45m
2026-07-16 N5309F BKX → BKX Jul 16, 18:59 UTCJul 16, 19:45 UTC45m
2026-07-16 N5309F - Jul 16, 17:35 UTCJul 16, 17:45 UTC10m
2026-07-16 N5309F - Jul 16, 16:15 UTCJul 16, 16:25 UTC10m
2026-07-16 N5309F BKX → BKX Jul 16, 13:00 UTCJul 16, 14:29 UTC1h 30m
2026-07-14 N5309F BKX → BKX Jul 14, 17:35 UTCJul 14, 18:20 UTC45m
2026-07-14 N5309F BKX → BKX Jul 14, 15:00 UTCJul 14, 16:10 UTC1h 10m
2026-07-13 N5309F BKX → BKX Jul 13, 17:30 UTCJul 13, 18:30 UTC1h 0m
2026-07-10 N5309F BKX → BKX Jul 10, 15:10 UTCJul 10, 16:15 UTC1h 5m
2026-07-08 N5309F BKX → BKX Jul 8, 14:45 UTCJul 8, 15:45 UTC1h 0m
2026-07-07 N5309F BKX → BKX Jul 7, 21:40 UTCJul 7, 22:40 UTC1h 0m
2026-07-07 N5309F BKX → BKX Jul 7, 18:35 UTCJul 7, 19:40 UTC1h 5m
2026-07-07 N5309F - Jul 7, 15:05 UTCJul 7, 16:00 UTC55m
2026-07-07 N5309F - Jul 7, 13:05 UTCJul 7, 14:35 UTC1h 30m
2026-07-06 N5309F BKX → BKX Jul 6, 20:20 UTCJul 6, 21:15 UTC55m
2026-07-06 N5309F BKX → BKX Jul 6, 13:40 UTCJul 6, 14:35 UTC55m
2026-07-01 N5309F BKX → BKX Jul 1, 00:05 UTCJul 1, 01:30 UTC1h 25m
2026-06-30 N5309F BKX → BKX Jun 30, 21:25 UTCJun 30, 23:15 UTC1h 50m
2026-06-30 N5309F - Jun 30, 18:10 UTCJun 30, 18:55 UTC45m
2026-06-30 N5309F - Jun 30, 12:30 UTCJun 30, 14:00 UTC1h 30m
2026-06-25 N5309F BKX → BKX Jun 25, 21:35 UTCJun 25, 22:29 UTC55m
2026-06-25 N5309F BKX → BKX Jun 25, 19:20 UTCJun 25, 20:30 UTC1h 10m
2026-06-25 N5309F BKX → BKX Jun 25, 12:44 UTCJun 25, 14:04 UTC1h 20m
2026-06-24 N5309F - Jun 24, 18:29 UTCJun 24, 19:29 UTC1h 0m
2026-06-24 N5309F BKX → BKX Jun 24, 15:29 UTCJun 24, 16:50 UTC1h 20m
2026-06-24 N5309F BKX → BKX Jun 24, 13:24 UTCJun 24, 14:20 UTC55m
2026-06-22 N5309F MHE → BKX Jun 22, 21:30 UTCJun 22, 22:05 UTC35m
2026-06-22 N5309F MHE → MHE Jun 22, 16:14 UTCJun 22, 17:50 UTC1h 35m
2026-06-22 N5309F BKX → MHE Jun 22, 15:14 UTCJun 22, 15:50 UTC35m
2026-06-20 N5309F BKX → BKX Jun 20, 14:39 UTCJun 20, 15:29 UTC50m
2026-06-19 N5309F BKX → BKX Jun 19, 17:49 UTCJun 19, 18:44 UTC55m
2026-06-19 N5309F BKX → BKX Jun 19, 00:59 UTCJun 19, 01:39 UTC40m
2026-06-18 N5309F BKX → BKX Jun 18, 18:25 UTCJun 18, 19:30 UTC1h 5m
2026-06-18 N5309F BKX → BKX Jun 18, 14:40 UTCJun 18, 16:05 UTC1h 25m
2026-06-16 N5309F BKX → BKX Jun 16, 21:30 UTCJun 16, 21:55 UTC25m
2026-06-16 N5309F BKX → BKX Jun 16, 20:15 UTCJun 16, 20:45 UTC30m
2026-06-16 N5309F BKX → BKX Jun 16, 18:39 UTCJun 16, 19:05 UTC25m
2026-06-16 N5309F BKX → BKX Jun 16, 15:35 UTCJun 16, 16:45 UTC1h 10m
2026-06-16 N5309F BKX → BKX Jun 16, 13:25 UTCJun 16, 14:39 UTC1h 15m
2026-06-15 N5309F - Jun 15, 22:30 UTCJun 15, 23:09 UTC40m
2026-06-15 N5309F - Jun 15, 20:04 UTCJun 15, 20:50 UTC45m
2026-06-15 N5309F - Jun 15, 13:50 UTCJun 15, 14:10 UTC20m
2026-06-15 N5309F - Jun 15, 12:39 UTCJun 15, 12:55 UTC15m
2026-06-12 N5309F BKX → BKX Jun 12, 21:35 UTCJun 12, 22:25 UTC50m
2026-06-12 N5309F BKX → BKX Jun 12, 17:15 UTCJun 12, 18:15 UTC1h 0m
2026-05-29 N5309F BKX → BKX May 29, 14:50 UTCMay 29, 16:00 UTC1h 10m
2026-05-29 N5309F BKX → BKX May 29, 02:45 UTCMay 29, 04:20 UTC1h 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 N5309F page for operator, model, and routing details .

Mode-S A6B406 frequently asked

What is Mode-S code A6B406?
A6B406 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5309F.
Where is Mode-S A6B406 registered?
Mode-S code A6B406 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 A6B406 broadcasting right now?
No active broadcast right now. Last signal was 14d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6B406, octal 51532006, decimal 10,925,062.
What flights does A6B406 operate?
Mode-S A6B406 has broadcast 1 distinct callsign, including N5309F.