Apparatus

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sensors Mode-S transponder

A11C8B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1707S · DIAMOND DA-40 Club Star · operated by UTAH STATE UNIVERSITY

Hex
A11C8B
Octal
50216213
Decimal
10,558,603
Country
US
Tail
N1707S
Type
DA40
No current signal · last broadcast 1h ago
Flights observed
86
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A11C8B.

Country allocation

The ICAO 24-bit address A11C8B 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
N1707S - 86 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 N1707S LGU → LGU Jun 3, 00:05 UTCJun 3, 01:20 UTC1h 15m
2026-06-02 N1707S - Jun 2, 21:45 UTCJun 2, 22:05 UTC20m
2026-06-02 N1707S - Jun 2, 20:05 UTCJun 2, 20:10 UTC5m
2026-06-02 N1707S LGU → LGU Jun 2, 16:55 UTCJun 2, 18:50 UTC1h 55m
2026-06-01 N1707S LGU → LGU Jun 1, 17:50 UTCJun 1, 19:15 UTC1h 25m
2026-06-01 N1707S LGU → LGU Jun 1, 15:30 UTCJun 1, 16:15 UTC45m
2026-05-31 N1707S LGU → LGU May 31, 16:50 UTCMay 31, 17:00 UTC10m
2026-05-31 N1707S LGU → LGU May 31, 14:50 UTCMay 31, 16:45 UTC1h 55m
2026-05-29 N1707S - May 29, 19:20 UTCMay 29, 19:35 UTC15m
2026-05-29 N1707S - May 29, 17:45 UTCMay 29, 18:00 UTC15m
2026-05-29 N1707S - May 29, 16:25 UTCMay 29, 16:55 UTC30m
2026-05-29 N1707S - May 29, 15:15 UTCMay 29, 15:30 UTC15m
2026-05-28 N1707S LGU → LGU May 28, 18:00 UTCMay 28, 18:10 UTC10m
2026-05-28 N1707S - May 28, 14:35 UTCMay 28, 15:35 UTC1h 0m
2026-05-28 N1707S - May 28, 13:10 UTCMay 28, 13:25 UTC15m
2026-05-23 N1707S LGU → LGU May 23, 18:20 UTCMay 23, 19:50 UTC1h 30m
2026-05-23 N1707S LGU → LGU May 23, 14:55 UTCMay 23, 17:15 UTC2h 20m
2026-05-22 N1707S LGU → LGU May 22, 23:30 UTCMay 23, 00:30 UTC1h 0m
2026-05-22 N1707S - May 22, 21:40 UTCMay 22, 21:55 UTC15m
2026-05-22 N1707S - May 22, 20:05 UTCMay 22, 20:25 UTC20m
2026-05-22 N1707S - May 22, 18:40 UTCMay 22, 18:55 UTC15m
2026-05-22 N1707S - May 22, 17:10 UTCMay 22, 17:35 UTC25m
2026-05-22 N1707S LGU → LGU May 22, 15:10 UTCMay 22, 16:30 UTC1h 20m
2026-05-22 N1707S LGU → LGU May 22, 03:45 UTCMay 22, 05:30 UTC1h 45m
2026-05-22 N1707S - May 22, 02:10 UTCMay 22, 02:20 UTC10m
2026-05-20 N1707S LGU → LGU May 20, 18:30 UTCMay 20, 19:05 UTC35m
2026-05-20 N1707S LGU → LGU May 20, 15:45 UTCMay 20, 16:55 UTC1h 10m
2026-05-19 N1707S LGU → LGU May 19, 23:55 UTCMay 20, 00:55 UTC1h 0m
2026-05-19 N1707S LGU → LGU May 19, 19:50 UTCMay 19, 20:40 UTC50m
2026-05-19 N1707S LGU → LGU May 19, 17:25 UTCMay 19, 18:35 UTC1h 10m
2026-05-19 N1707S LGU → LGU May 19, 15:50 UTCMay 19, 16:45 UTC55m
2026-05-17 N1707S LGU → LGU May 17, 00:05 UTCMay 17, 01:05 UTC1h 0m
2026-05-16 N1707S LGU → LGU May 16, 20:00 UTCMay 16, 20:55 UTC55m
2026-05-16 N1707S LGU → LGU May 16, 16:40 UTCMay 16, 18:10 UTC1h 30m
2026-05-16 N1707S - May 16, 15:40 UTCMay 16, 15:55 UTC15m
2026-05-16 N1707S - May 16, 14:41 UTCMay 16, 14:51 UTC10m
2026-05-16 N1707S - May 16, 00:35 UTCMay 16, 00:50 UTC15m
2026-05-15 N1707S - May 15, 23:20 UTCMay 15, 23:30 UTC10m
2026-05-15 N1707S LGU → LGU May 15, 17:15 UTCMay 15, 18:20 UTC1h 5m
2026-05-15 N1707S LGU → LGU May 15, 14:25 UTCMay 15, 14:40 UTC15m
2026-05-15 N1707S LGU → LGU May 15, 00:10 UTCMay 15, 01:05 UTC55m
2026-05-14 N1707S LGU → LGU May 14, 22:15 UTCMay 14, 23:35 UTC1h 20m
2026-05-14 N1707S LGU → LGU May 14, 20:15 UTCMay 14, 21:15 UTC1h 0m
2026-05-14 N1707S LGU → LGU May 14, 17:00 UTCMay 14, 17:10 UTC10m
2026-05-14 N1707S - May 14, 16:20 UTCMay 14, 16:55 UTC35m
2026-05-14 N1707S - May 14, 15:05 UTCMay 14, 15:40 UTC35m
2026-05-13 N1707S LGU → LGU May 13, 15:45 UTCMay 13, 16:30 UTC45m
2026-05-13 N1707S - May 13, 00:25 UTCMay 13, 01:20 UTC55m
2026-05-12 N1707S - May 12, 22:55 UTCMay 12, 23:20 UTC25m
2026-05-12 N1707S LGU → LGU May 12, 19:50 UTCMay 12, 20:25 UTC35m

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 N1707S page for operator, model, and routing details .

Mode-S A11C8B frequently asked

What is Mode-S code A11C8B?
A11C8B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1707S.
Where is Mode-S A11C8B registered?
Mode-S code A11C8B 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 A11C8B broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A11C8B, octal 50216213, decimal 10,558,603.
What flights does A11C8B operate?
Mode-S A11C8B has broadcast 1 distinct callsign, including N1707S.