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sensors Mode-S transponder

A1897C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1989F · DASSAULT Falcon 50 · operated by SEIS PRIMOS INVESTMENTS LLC

Hex
A1897C
Octal
50304574
Decimal
10,586,492
Country
US
Tail
N1989F
Type
FA50
No current signal · last broadcast 12h ago
Flights observed
91
Distinct callsigns
1
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A1897C.

Country allocation

The ICAO 24-bit address A1897C 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
N1989F - 91 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N1989F - Jul 13, 17:50 UTCJul 13, 21:00 UTC3h 10m
2026-07-10 N1989F - Jul 10, 14:50 UTCJul 10, 17:55 UTC3h 5m
2026-07-10 N1989F - Jul 10, 12:55 UTCJul 10, 13:30 UTC35m
2026-07-05 N1989F - Jul 5, 16:10 UTCJul 5, 17:20 UTC1h 10m
2026-07-02 N1989F - Jul 2, 01:55 UTCJul 2, 05:20 UTC3h 25m
2026-07-01 N1989F - Jul 1, 21:20 UTCJul 1, 21:35 UTC15m
2026-06-30 N1989F - Jun 30, 21:10 UTCJun 30, 21:30 UTC20m
2026-06-30 N1989F - Jun 30, 17:25 UTCJun 30, 20:25 UTC3h 0m
2026-06-30 N1989F - Jun 30, 14:15 UTCJun 30, 14:40 UTC25m
2026-06-29 N1989F - Jun 29, 21:19 UTCJun 29, 22:35 UTC1h 15m
2026-06-29 N1989F - Jun 29, 17:10 UTCJun 29, 20:35 UTC3h 25m
2026-06-29 N1989F - Jun 29, 13:19 UTCJun 29, 15:45 UTC2h 25m
2026-06-29 N1989F - Jun 29, 00:00 UTCJun 29, 02:35 UTC2h 35m
2026-06-27 N1989F - Jun 27, 17:04 UTCJun 27, 18:20 UTC1h 15m
2026-06-27 N1989F - Jun 27, 16:00 UTCJun 27, 16:10 UTC10m
2026-06-25 N1989F - Jun 25, 01:30 UTCJun 25, 05:29 UTC4h 0m
2026-06-25 N1989F - Jun 25, 00:55 UTCJun 25, 01:24 UTC30m
2026-06-24 N1989F - Jun 24, 22:35 UTCJun 25, 00:24 UTC1h 50m
2026-06-23 N1989F - Jun 23, 18:55 UTCJun 23, 23:14 UTC4h 20m
2026-06-23 N1989F - Jun 23, 15:15 UTCJun 23, 16:29 UTC1h 15m
2026-06-23 N1989F - Jun 23, 01:15 UTCJun 23, 05:29 UTC4h 15m
2026-06-22 N1989F - Jun 22, 19:40 UTCJun 22, 20:00 UTC20m
2026-06-22 N1989F - Jun 22, 02:54 UTCJun 22, 05:40 UTC2h 45m
2026-06-22 N1989F RST → FAR Jun 22, 01:19 UTCJun 22, 02:10 UTC50m
2026-06-21 N1989F - Jun 21, 15:34 UTCJun 21, 16:54 UTC1h 20m
2026-06-16 N1989F - Jun 16, 20:30 UTCJun 16, 21:30 UTC1h 0m
2026-06-16 N1989F - Jun 16, 18:25 UTCJun 16, 19:55 UTC1h 31m
2026-06-16 N1989F - Jun 16, 17:30 UTCJun 16, 17:40 UTC10m
2026-06-15 N1989F - Jun 15, 15:40 UTCJun 15, 15:59 UTC20m
2026-06-15 N1989F - Jun 15, 13:15 UTCJun 15, 14:50 UTC1h 35m
2026-06-15 N1989F - Jun 15, 11:15 UTCJun 15, 12:15 UTC1h 0m
2026-06-14 N1989F - Jun 14, 19:20 UTCJun 14, 20:10 UTC50m
2026-06-14 N1989F - Jun 14, 16:25 UTCJun 14, 18:30 UTC2h 5m
2026-06-13 N1989F - Jun 13, 23:10 UTCJun 13, 23:25 UTC15m
2026-06-13 N1989F - Jun 13, 21:10 UTCJun 13, 22:20 UTC1h 10m
2026-06-13 N1989F - Jun 13, 15:30 UTCJun 13, 20:25 UTC4h 55m
2026-06-12 N1989F - Jun 12, 20:05 UTCJun 12, 22:10 UTC2h 5m
2026-06-11 N1989F - Jun 11, 23:10 UTCJun 12, 00:15 UTC1h 5m
2026-06-11 N1989F - Jun 11, 18:10 UTCJun 11, 22:20 UTC4h 10m
2026-06-11 N1989F - Jun 11, 17:05 UTCJun 11, 17:30 UTC25m
2026-06-11 N1989F - Jun 11, 16:05 UTCJun 11, 16:25 UTC20m
2026-06-06 N1989F - Jun 6, 16:24 UTCJun 6, 18:45 UTC2h 20m
2026-06-06 N1989F - Jun 6, 12:20 UTCJun 6, 15:05 UTC2h 45m
2026-06-05 N1989F - Jun 5, 21:20 UTCJun 5, 23:30 UTC2h 10m
2026-06-03 N1989F - Jun 3, 01:40 UTCJun 3, 02:40 UTC1h 0m
2026-06-02 N1989F - Jun 2, 19:30 UTCJun 3, 01:10 UTC5h 40m
2026-06-02 N1989F - Jun 2, 00:10 UTCJun 2, 01:20 UTC1h 10m
2026-05-24 N1989F - May 24, 17:20 UTCMay 24, 19:10 UTC1h 50m
2026-05-21 N1989F - May 21, 12:40 UTCMay 21, 13:50 UTC1h 10m
2026-05-21 N1989F - May 21, 10:45 UTCMay 21, 11:35 UTC50m

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 N1989F page for operator, model, and routing details .

Mode-S A1897C frequently asked

What is Mode-S code A1897C?
A1897C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1989F.
Where is Mode-S A1897C registered?
Mode-S code A1897C 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 A1897C broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1897C, octal 50304574, decimal 10,586,492.
What flights does A1897C operate?
Mode-S A1897C has broadcast 1 distinct callsign, including N1989F.