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sensors Mode-S transponder

AC9C27

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N911UC · operated by TVPX AIRCRAFT SOLUTIONS INC TRUSTEE

Hex
AC9C27
Octal
53116047
Decimal
11,312,167
Country
US
Tail
N911UC
Type
PC12
No current signal · last broadcast Jul 26, 11:25 UTC
Flights observed
173
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 11:25 UTC

Last known position

Most recent position reported by Mode-S AC9C27.

Country allocation

The ICAO 24-bit address AC9C27 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
N911UC - 173 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N911UC - Jul 26, 11:00 UTCJul 26, 11:25 UTC25m
2026-07-26 N911UC - Jul 26, 09:05 UTCJul 26, 09:30 UTC25m
2026-07-26 N911UC - Jul 26, 07:10 UTCJul 26, 07:35 UTC25m
2026-07-26 N911UC - Jul 26, 05:10 UTCJul 26, 05:35 UTC25m
2026-07-26 N911UC - Jul 26, 03:25 UTCJul 26, 04:05 UTC40m
2026-07-24 N911UC - Jul 24, 07:30 UTCJul 24, 07:50 UTC20m
2026-07-24 N911UC - Jul 24, 04:55 UTCJul 24, 05:20 UTC25m
2026-07-23 N911UC FNL → APA Jul 23, 19:05 UTCJul 23, 19:25 UTC20m
2026-07-23 N911UC - Jul 23, 17:30 UTCJul 23, 17:50 UTC20m
2026-07-23 N911UC - Jul 23, 15:20 UTCJul 23, 15:45 UTC25m
2026-07-23 N911UC - Jul 23, 11:40 UTCJul 23, 12:30 UTC50m
2026-07-23 N911UC - Jul 23, 09:10 UTCJul 23, 09:50 UTC40m
2026-07-22 N911UC PUB → APA Jul 22, 12:15 UTCJul 22, 12:45 UTC30m
2026-07-22 N911UC COS → APA Jul 22, 04:15 UTCJul 22, 04:35 UTC20m
2026-07-22 N911UC - Jul 22, 02:05 UTCJul 22, 02:35 UTC30m
2026-07-22 N911UC - Jul 22, 00:00 UTCJul 22, 00:45 UTC45m
2026-07-21 N911UC - Jul 21, 19:20 UTCJul 21, 20:20 UTC1h 0m
2026-07-21 N911UC - Jul 21, 15:15 UTCJul 21, 15:50 UTC35m
2026-07-21 N911UC - Jul 21, 10:30 UTCJul 21, 11:50 UTC1h 20m
2026-07-21 N911UC - Jul 21, 07:25 UTCJul 21, 08:45 UTC1h 20m
2026-07-19 N911UC COS → APA Jul 19, 02:10 UTCJul 19, 02:25 UTC15m
2026-07-18 N911UC - Jul 18, 23:45 UTCJul 19, 00:15 UTC30m
2026-07-18 N911UC - Jul 18, 21:40 UTCJul 18, 22:15 UTC35m
2026-07-18 N911UC - Jul 18, 07:40 UTCJul 18, 08:15 UTC35m
2026-07-18 N911UC - Jul 18, 04:50 UTCJul 18, 05:25 UTC35m
2026-07-17 N911UC - Jul 17, 02:30 UTCJul 17, 03:14 UTC45m
2026-07-16 N911UC - Jul 16, 23:49 UTCJul 17, 00:25 UTC35m
2026-07-16 N911UC - Jul 16, 21:55 UTCJul 16, 22:35 UTC40m
2026-07-16 N911UC - Jul 16, 20:45 UTCJul 16, 21:10 UTC25m
2026-07-16 N911UC OGD → OGD Jul 16, 16:40 UTCJul 16, 17:30 UTC50m
2026-07-15 N911UC - Jul 15, 23:25 UTCJul 16, 00:00 UTC35m
2026-07-06 N911UC - Jul 6, 17:05 UTCJul 6, 17:25 UTC20m
2026-07-06 N911UC - Jul 6, 15:50 UTCJul 6, 16:15 UTC25m
2026-07-06 N911UC COS → APA Jul 6, 06:50 UTCJul 6, 07:05 UTC15m
2026-07-06 N911UC - Jul 6, 05:05 UTCJul 6, 05:30 UTC25m
2026-07-06 N911UC - Jul 6, 03:05 UTCJul 6, 03:45 UTC40m
2026-07-04 N911UC - Jul 4, 11:05 UTCJul 4, 11:25 UTC20m
2026-07-04 N911UC - Jul 4, 09:10 UTCJul 4, 09:35 UTC25m
2026-07-04 N911UC - Jul 4, 06:45 UTCJul 4, 07:15 UTC30m
2026-07-03 N911UC - Jul 3, 10:30 UTCJul 3, 10:50 UTC20m
2026-07-03 N911UC - Jul 3, 06:50 UTCJul 3, 07:05 UTC15m
2026-07-03 N911UC - Jul 3, 05:40 UTCJul 3, 06:05 UTC25m
2026-07-03 N911UC - Jul 3, 03:00 UTCJul 3, 04:00 UTC1h 0m
2026-07-02 N911UC - Jul 2, 07:20 UTCJul 2, 07:55 UTC35m
2026-07-02 N911UC - Jul 2, 05:45 UTCJul 2, 06:25 UTC40m
2026-07-02 N911UC - Jul 2, 02:30 UTCJul 2, 03:25 UTC55m
2026-07-01 N911UC - Jul 1, 23:50 UTCJul 2, 00:55 UTC1h 5m
2026-06-30 N911UC - Jun 30, 07:55 UTCJun 30, 08:35 UTC40m
2026-06-30 N911UC - Jun 30, 05:55 UTCJun 30, 06:25 UTC30m
2026-06-29 N911UC - Jun 29, 20:54 UTCJun 29, 21:34 UTC40m

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 N911UC page for operator, model, and routing details .

Mode-S AC9C27 frequently asked

What is Mode-S code AC9C27?
AC9C27 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N911UC.
Where is Mode-S AC9C27 registered?
Mode-S code AC9C27 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 AC9C27 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC9C27, octal 53116047, decimal 11,312,167.
What flights does AC9C27 operate?
Mode-S AC9C27 has broadcast 1 distinct callsign, including N911UC.