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sensors Mode-S transponder

A1C209

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N212MF · PILATUS PC-12 · operated by UP IN THE AIR LLC

Hex
A1C209
Octal
50341011
Decimal
10,600,969
Country
US
Tail
N212MF
Type
PC12
No current signal · last broadcast 7h ago
Flights observed
216
Distinct callsigns
2
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S A1C209.

Country allocation

The ICAO 24-bit address A1C209 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 2 distinct

Callsign Airline Flights Last seen
GPD212 - 199 2026-07-13
N212MF - 17 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 GPD212 - Jul 13, 22:25 UTCJul 13, 23:15 UTC50m
2026-07-13 GPD212 - Jul 13, 20:20 UTCJul 13, 21:05 UTC45m
2026-07-13 GPD212 - Jul 13, 16:55 UTCJul 13, 17:40 UTC45m
2026-07-13 GPD212 - Jul 13, 15:20 UTCJul 13, 16:00 UTC40m
2026-07-13 GPD212 - Jul 13, 13:55 UTCJul 13, 14:40 UTC45m
2026-07-13 GPD212 - Jul 13, 12:20 UTCJul 13, 13:05 UTC45m
2026-07-13 GPD212 - Jul 13, 10:50 UTCJul 13, 11:35 UTC45m
2026-07-13 GPD212 - Jul 13, 09:05 UTCJul 13, 09:40 UTC35m
2026-07-12 GPD212 - Jul 12, 23:45 UTCJul 13, 00:30 UTC45m
2026-07-12 GPD212 - Jul 12, 22:25 UTCJul 12, 23:05 UTC40m
2026-07-12 GPD212 - Jul 12, 20:50 UTCJul 12, 21:30 UTC40m
2026-07-12 GPD212 HPN → MVY Jul 12, 18:40 UTCJul 12, 19:20 UTC40m
2026-07-12 GPD212 - Jul 12, 16:30 UTCJul 12, 17:15 UTC45m
2026-07-12 GPD212 - Jul 12, 15:10 UTCJul 12, 15:50 UTC40m
2026-07-11 GPD212 - Jul 11, 22:40 UTCJul 11, 23:25 UTC45m
2026-07-11 GPD212 - Jul 11, 21:05 UTCJul 11, 21:45 UTC40m
2026-07-11 GPD212 - Jul 11, 19:25 UTCJul 11, 20:10 UTC45m
2026-07-11 GPD212 - Jul 11, 17:50 UTCJul 11, 18:20 UTC30m
2026-07-11 GPD212 - Jul 11, 16:30 UTCJul 11, 17:05 UTC35m
2026-07-11 GPD212 - Jul 11, 15:25 UTCJul 11, 15:50 UTC25m
2026-07-11 GPD212 - Jul 11, 13:50 UTCJul 11, 14:25 UTC35m
2026-07-11 GPD212 - Jul 11, 12:45 UTCJul 11, 12:55 UTC10m
2026-07-10 GPD212 - Jul 10, 23:25 UTCJul 11, 00:30 UTC1h 5m
2026-07-10 GPD212 - Jul 10, 21:20 UTCJul 10, 22:00 UTC40m
2026-07-10 GPD212 BED → MVY Jul 10, 20:15 UTCJul 10, 20:35 UTC20m
2026-07-10 GPD212 BED → BED Jul 10, 17:40 UTCJul 10, 19:00 UTC1h 20m
2026-07-09 GPD212 - Jul 9, 22:25 UTCJul 9, 23:15 UTC50m
2026-07-09 GPD212 - Jul 9, 20:15 UTCJul 9, 21:30 UTC1h 15m
2026-07-09 GPD212 MVY → BED Jul 9, 18:05 UTCJul 9, 18:30 UTC25m
2026-07-09 GPD212 BED → MVY Jul 9, 17:10 UTCJul 9, 17:30 UTC20m
2026-07-08 GPD212 - Jul 8, 21:25 UTCJul 8, 22:00 UTC35m
2026-07-08 GPD212 - Jul 8, 20:15 UTCJul 8, 20:40 UTC25m
2026-07-08 GPD212 - Jul 8, 19:00 UTCJul 8, 19:40 UTC40m
2026-07-08 GPD212 - Jul 8, 17:45 UTCJul 8, 18:10 UTC25m
2026-07-08 GPD212 - Jul 8, 16:30 UTCJul 8, 17:00 UTC30m
2026-07-08 GPD212 - Jul 8, 15:25 UTCJul 8, 15:55 UTC30m
2026-07-08 GPD212 - Jul 8, 13:20 UTCJul 8, 14:05 UTC45m
2026-07-06 GPD212 - Jul 6, 19:55 UTCJul 6, 20:35 UTC40m
2026-07-06 GPD212 MVY → BED Jul 6, 18:35 UTCJul 6, 19:00 UTC25m
2026-07-06 GPD212 - Jul 6, 17:35 UTCJul 6, 17:55 UTC20m
2026-07-06 GPD212 - Jul 6, 13:40 UTCJul 6, 14:45 UTC1h 5m
2026-07-06 GPD212 - Jul 6, 11:30 UTCJul 6, 12:35 UTC1h 5m
2026-07-05 GPD212 - Jul 5, 22:20 UTCJul 5, 22:50 UTC30m
2026-07-05 GPD212 - Jul 5, 21:15 UTCJul 5, 21:40 UTC25m
2026-07-05 GPD212 - Jul 5, 20:05 UTCJul 5, 20:35 UTC30m
2026-07-05 GPD212 - Jul 5, 18:40 UTCJul 5, 19:05 UTC25m
2026-07-05 GPD212 - Jul 5, 17:25 UTCJul 5, 18:00 UTC35m
2026-07-05 GPD212 - Jul 5, 15:50 UTCJul 5, 16:15 UTC25m
2026-07-04 GPD212 - Jul 4, 16:15 UTCJul 4, 16:50 UTC35m
2026-07-04 GPD212 - Jul 4, 15:20 UTCJul 4, 15:45 UTC25m

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 N212MF page for operator, model, and routing details .

Mode-S A1C209 frequently asked

What is Mode-S code A1C209?
A1C209 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N212MF.
Where is Mode-S A1C209 registered?
Mode-S code A1C209 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 A1C209 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1C209, octal 50341011, decimal 10,600,969.
What flights does A1C209 operate?
Mode-S A1C209 has broadcast 2 distinct callsigns, including GPD212, N212MF.