Apparatus

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sensors Mode-S transponder

A06D39

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1266U · CESSNA 172 Skyhawk · operated by RALSTONTC LLC

Hex
A06D39
Octal
50066471
Decimal
10,513,721
Country
US
Tail
N1266U
Type
C172
No current signal · last broadcast 8h ago
Flights observed
199
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A06D39.

Country allocation

The ICAO 24-bit address A06D39 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
N1266U - 199 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N1266U - Jul 13, 23:50 UTCJul 14, 00:20 UTC30m
2026-07-13 N1266U - Jul 13, 21:40 UTCJul 13, 22:50 UTC1h 10m
2026-07-11 N1266U - Jul 11, 18:45 UTCJul 11, 19:35 UTC50m
2026-07-11 N1266U - Jul 11, 17:05 UTCJul 11, 17:55 UTC50m
2026-07-11 N1266U - Jul 11, 14:50 UTCJul 11, 16:15 UTC1h 25m
2026-07-10 N1266U - Jul 10, 19:45 UTCJul 10, 20:35 UTC50m
2026-07-10 N1266U - Jul 10, 16:50 UTCJul 10, 18:00 UTC1h 10m
2026-07-10 N1266U - Jul 10, 14:10 UTCJul 10, 15:35 UTC1h 25m
2026-07-09 N1266U - Jul 9, 21:50 UTCJul 9, 22:50 UTC1h 0m
2026-07-09 N1266U - Jul 9, 16:45 UTCJul 9, 17:45 UTC1h 0m
2026-07-09 N1266U - Jul 9, 14:35 UTCJul 9, 15:40 UTC1h 5m
2026-07-08 N1266U - Jul 8, 23:45 UTCJul 9, 00:45 UTC1h 0m
2026-07-08 N1266U - Jul 8, 22:00 UTCJul 8, 22:45 UTC45m
2026-07-08 N1266U FTW → FTW Jul 8, 19:30 UTCJul 8, 20:35 UTC1h 5m
2026-07-08 N1266U - Jul 8, 15:55 UTCJul 8, 16:40 UTC45m
2026-07-08 N1266U - Jul 8, 03:55 UTCJul 8, 04:15 UTC20m
2026-07-08 N1266U - Jul 8, 02:40 UTCJul 8, 03:15 UTC35m
2026-07-07 N1266U - Jul 7, 19:45 UTCJul 7, 20:45 UTC1h 0m
2026-07-07 N1266U FTW → FTW Jul 7, 16:35 UTCJul 7, 18:20 UTC1h 45m
2026-07-07 N1266U - Jul 7, 14:30 UTCJul 7, 15:05 UTC35m
2026-07-07 N1266U - Jul 7, 12:35 UTCJul 7, 13:55 UTC1h 20m
2026-07-07 N1266U - Jul 7, 01:55 UTCJul 7, 02:10 UTC15m
2026-07-06 N1266U - Jul 6, 23:40 UTCJul 7, 00:40 UTC1h 0m
2026-07-06 N1266U - Jul 6, 22:00 UTCJul 6, 22:45 UTC45m
2026-07-06 N1266U - Jul 6, 18:45 UTCJul 6, 20:45 UTC2h 0m
2026-07-06 N1266U FTW → FTW Jul 6, 14:40 UTCJul 6, 15:50 UTC1h 10m
2026-07-06 N1266U - Jul 6, 12:30 UTCJul 6, 13:50 UTC1h 20m
2026-07-04 N1266U - Jul 4, 14:30 UTCJul 4, 16:00 UTC1h 30m
2026-07-03 N1266U - Jul 3, 23:30 UTCJul 4, 00:55 UTC1h 25m
2026-07-03 N1266U - Jul 3, 22:00 UTCJul 3, 22:50 UTC50m
2026-07-03 N1266U FTW → FTW Jul 3, 15:05 UTCJul 3, 15:25 UTC20m
2026-07-03 N1266U - Jul 3, 00:55 UTCJul 3, 01:25 UTC30m
2026-07-02 N1266U - Jul 2, 23:25 UTCJul 3, 00:20 UTC55m
2026-07-02 N1266U FTW → FTW Jul 2, 22:15 UTCJul 2, 22:45 UTC30m
2026-07-02 N1266U FTW → FTW Jul 2, 19:40 UTCJul 2, 20:45 UTC1h 5m
2026-07-02 N1266U FTW → FTW Jul 2, 16:40 UTCJul 2, 17:50 UTC1h 10m
2026-07-02 N1266U - Jul 2, 14:35 UTCJul 2, 15:45 UTC1h 10m
2026-07-01 N1266U - Jul 1, 23:40 UTCJul 2, 00:40 UTC1h 0m
2026-07-01 N1266U FTW → FTW Jul 1, 21:45 UTCJul 1, 22:30 UTC45m
2026-07-01 N1266U FTW → FTW Jul 1, 19:35 UTCJul 1, 20:55 UTC1h 20m
2026-07-01 N1266U - Jul 1, 16:20 UTCJul 1, 16:35 UTC15m
2026-07-01 N1266U - Jul 1, 15:10 UTCJul 1, 15:35 UTC25m
2026-07-01 N1266U - Jul 1, 12:40 UTCJul 1, 13:45 UTC1h 5m
2026-06-30 N1266U - Jun 30, 23:20 UTCJul 1, 00:35 UTC1h 15m
2026-06-30 N1266U - Jun 30, 19:35 UTCJun 30, 20:55 UTC1h 20m
2026-06-30 N1266U - Jun 30, 16:50 UTCJun 30, 17:35 UTC45m
2026-06-30 N1266U FTW → FTW Jun 30, 14:05 UTCJun 30, 15:20 UTC1h 15m
2026-06-29 N1266U - Jun 29, 16:10 UTCJun 29, 16:29 UTC20m
2026-06-27 N1266U - Jun 27, 14:39 UTCJun 27, 15:49 UTC1h 10m
2026-06-26 N1266U - Jun 26, 21:35 UTCJun 26, 22:49 UTC1h 15m

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 N1266U page for operator, model, and routing details .

Mode-S A06D39 frequently asked

What is Mode-S code A06D39?
A06D39 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1266U.
Where is Mode-S A06D39 registered?
Mode-S code A06D39 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 A06D39 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A06D39, octal 50066471, decimal 10,513,721.
What flights does A06D39 operate?
Mode-S A06D39 has broadcast 1 distinct callsign, including N1266U.