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sensors Mode-S transponder

AC9BA0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N911NT · AEROSPATIALE AS-350 Ecureuil · operated by STATE OF ALASKA

Hex
AC9BA0
Octal
53115640
Decimal
11,312,032
Country
US
Tail
N911NT
Type
AS50
No current signal · last broadcast 1d ago
Flights observed
90
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC9BA0.

Country allocation

The ICAO 24-bit address AC9BA0 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
N911NT - 90 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 N911NT - Jul 11, 01:40 UTCJul 11, 04:55 UTC3h 15m
2026-07-11 N911NT - Jul 11, 00:15 UTCJul 11, 01:00 UTC45m
2026-07-10 N911NT - Jul 10, 20:35 UTCJul 10, 22:35 UTC2h 0m
2026-07-10 N911NT - Jul 10, 06:00 UTCJul 10, 06:40 UTC40m
2026-07-10 N911NT - Jul 10, 05:25 UTCJul 10, 05:50 UTC25m
2026-07-10 N911NT - Jul 10, 01:30 UTCJul 10, 01:40 UTC10m
2026-07-09 N911NT - Jul 9, 22:30 UTCJul 10, 00:25 UTC1h 55m
2026-07-09 N911NT - Jul 9, 20:25 UTCJul 9, 21:50 UTC1h 25m
2026-07-09 N911NT - Jul 9, 19:45 UTCJul 9, 19:55 UTC10m
2026-07-02 N911NT - Jul 2, 20:55 UTCJul 3, 00:30 UTC3h 35m
2026-06-27 N911NT - Jun 27, 04:00 UTCJun 27, 05:59 UTC2h 0m
2026-06-27 N911NT - Jun 27, 01:49 UTCJun 27, 03:09 UTC1h 20m
2026-06-27 N911NT - Jun 27, 01:04 UTCJun 27, 01:09 UTC5m
2026-06-26 N911NT - Jun 26, 22:25 UTCJun 27, 00:05 UTC1h 40m
2026-06-26 N911NT - Jun 26, 04:45 UTCJun 26, 05:55 UTC1h 10m
2026-06-26 N911NT - Jun 26, 03:39 UTCJun 26, 04:00 UTC20m
2026-06-26 N911NT - Jun 26, 02:30 UTCJun 26, 03:29 UTC1h 0m
2026-06-26 N911NT - Jun 26, 01:39 UTCJun 26, 02:09 UTC30m
2026-06-25 N911NT - Jun 25, 22:59 UTCJun 26, 00:50 UTC1h 50m
2026-06-25 N911NT - Jun 25, 22:29 UTCJun 25, 22:49 UTC20m
2026-06-25 N911NT - Jun 25, 21:59 UTCJun 25, 22:04 UTC5m
2026-06-25 N911NT - Jun 25, 05:05 UTCJun 25, 05:55 UTC50m
2026-06-25 N911NT - Jun 25, 04:10 UTCJun 25, 04:35 UTC25m
2026-06-25 N911NT - Jun 25, 02:49 UTCJun 25, 04:04 UTC1h 15m
2026-06-25 N911NT - Jun 25, 02:19 UTCJun 25, 02:30 UTC10m
2026-06-25 N911NT - Jun 25, 00:49 UTCJun 25, 01:30 UTC40m
2026-06-25 N911NT - Jun 25, 00:09 UTCJun 25, 00:40 UTC30m
2026-06-24 N911NT - Jun 24, 22:25 UTCJun 24, 23:45 UTC1h 20m
2026-06-22 N911NT - Jun 22, 05:15 UTCJun 22, 05:24 UTC10m
2026-06-18 N911NT - Jun 18, 00:05 UTCJun 18, 01:20 UTC1h 15m
2026-06-17 N911NT - Jun 17, 22:00 UTCJun 17, 23:20 UTC1h 20m
2026-06-16 N911NT - Jun 16, 23:30 UTCJun 16, 23:40 UTC10m
2026-06-16 N911NT - Jun 16, 22:35 UTCJun 16, 22:50 UTC15m
2026-06-16 N911NT - Jun 16, 00:24 UTCJun 16, 00:35 UTC10m
2026-06-16 N911NT - Jun 16, 00:00 UTCJun 16, 00:05 UTC5m
2026-06-10 N911NT - Jun 10, 21:55 UTCJun 10, 22:45 UTC50m
2026-06-10 N911NT - Jun 10, 21:20 UTCJun 10, 21:50 UTC30m
2026-06-10 N911NT - Jun 10, 21:05 UTCJun 10, 21:15 UTC10m
2026-06-04 N911NT - Jun 4, 23:25 UTCJun 5, 00:10 UTC45m
2026-06-04 N911NT - Jun 4, 19:05 UTCJun 4, 21:50 UTC2h 45m
2026-06-04 N911NT - Jun 4, 00:20 UTCJun 4, 00:50 UTC30m
2026-06-03 N911NT - Jun 3, 19:15 UTCJun 3, 23:10 UTC3h 55m
2026-06-01 N911NT - Jun 1, 21:10 UTCJun 1, 21:25 UTC15m
2026-06-01 N911NT - Jun 1, 06:20 UTCJun 1, 06:50 UTC30m
2026-06-01 N911NT - Jun 1, 04:15 UTCJun 1, 04:50 UTC35m
2026-06-01 N911NT - Jun 1, 00:45 UTCJun 1, 01:05 UTC20m
2026-05-31 N911NT - May 31, 17:30 UTCMay 31, 17:50 UTC20m
2026-05-29 N911NT - May 29, 21:20 UTCMay 29, 22:50 UTC1h 30m
2026-05-24 N911NT - May 24, 23:40 UTCMay 24, 23:46 UTC6m
2026-05-24 N911NT - May 24, 21:20 UTCMay 24, 21:45 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 N911NT page for operator, model, and routing details .

Mode-S AC9BA0 frequently asked

What is Mode-S code AC9BA0?
AC9BA0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N911NT.
Where is Mode-S AC9BA0 registered?
Mode-S code AC9BA0 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 AC9BA0 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC9BA0, octal 53115640, decimal 11,312,032.
What flights does AC9BA0 operate?
Mode-S AC9BA0 has broadcast 1 distinct callsign, including N911NT.