Apparatus

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sensors Mode-S transponder

ABC9A1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N859JT · CESSNA 172 Skyhawk · operated by RAINIER FLIGHT SERVICE LLC

Hex
ABC9A1
Octal
52744641
Decimal
11,258,273
Country
US
Tail
N859JT
Type
C172
No current signal · last broadcast Jul 26, 21:35 UTC
Flights observed
209
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S ABC9A1.

Country allocation

The ICAO 24-bit address ABC9A1 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
RFS730 - 209 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RFS730 - Jul 26, 20:20 UTCJul 26, 21:35 UTC1h 15m
2026-07-26 RFS730 - Jul 26, 17:35 UTCJul 26, 18:50 UTC1h 15m
2026-07-26 RFS730 TIW → TIW Jul 26, 15:35 UTCJul 26, 16:10 UTC35m
2026-07-25 RFS730 - Jul 25, 22:05 UTCJul 25, 23:15 UTC1h 10m
2026-07-25 RFS730 - Jul 25, 19:35 UTCJul 25, 20:45 UTC1h 10m
2026-07-25 RFS730 - Jul 25, 17:50 UTCJul 25, 18:00 UTC10m
2026-07-25 RFS730 - Jul 25, 17:00 UTCJul 25, 17:15 UTC15m
2026-07-24 RFS730 - Jul 24, 23:10 UTCJul 25, 00:20 UTC1h 10m
2026-07-21 RFS730 TIW → TIW Jul 21, 21:00 UTCJul 21, 22:05 UTC1h 5m
2026-07-21 RFS730 TIW → TIW Jul 21, 17:45 UTCJul 21, 19:35 UTC1h 50m
2026-07-21 RFS730 TIW → TIW Jul 21, 15:45 UTCJul 21, 16:35 UTC50m
2026-07-20 RFS730 TIW → TIW Jul 20, 19:15 UTCJul 20, 20:45 UTC1h 30m
2026-07-19 RFS730 - Jul 19, 19:50 UTCJul 19, 21:00 UTC1h 10m
2026-07-17 RFS730 TIW → TIW Jul 17, 23:50 UTCJul 18, 01:15 UTC1h 25m
2026-07-17 RFS730 - Jul 17, 21:50 UTCJul 17, 22:40 UTC50m
2026-07-17 RFS730 TIW → TIW Jul 17, 19:40 UTCJul 17, 20:35 UTC55m
2026-07-17 RFS730 - Jul 17, 17:20 UTCJul 17, 18:10 UTC50m
2026-07-15 RFS730 - Jul 15, 23:40 UTCJul 16, 00:45 UTC1h 5m
2026-07-15 RFS730 - Jul 15, 20:35 UTCJul 15, 22:10 UTC1h 35m
2026-07-15 RFS730 TIW → TIW Jul 15, 18:25 UTCJul 15, 19:25 UTC1h 0m
2026-07-15 RFS730 - Jul 15, 15:30 UTCJul 15, 16:20 UTC50m
2026-07-15 RFS730 - Jul 15, 05:15 UTCJul 15, 06:25 UTC1h 10m
2026-07-15 RFS730 - Jul 15, 02:40 UTCJul 15, 04:20 UTC1h 40m
2026-07-14 RFS730 TIW → TIW Jul 14, 22:45 UTCJul 14, 23:50 UTC1h 5m
2026-07-14 RFS730 TIW → TIW Jul 14, 20:25 UTCJul 14, 21:40 UTC1h 15m
2026-07-14 RFS730 - Jul 14, 17:50 UTCJul 14, 19:20 UTC1h 30m
2026-07-14 RFS730 - Jul 14, 15:45 UTCJul 14, 16:45 UTC1h 0m
2026-07-13 RFS730 TIW → TIW Jul 13, 23:45 UTCJul 14, 00:45 UTC1h 0m
2026-07-13 RFS730 TIW → TIW Jul 13, 21:05 UTCJul 13, 22:25 UTC1h 20m
2026-07-13 RFS730 - Jul 13, 18:45 UTCJul 13, 19:40 UTC55m
2026-07-12 RFS730 - Jul 12, 23:55 UTCJul 13, 01:10 UTC1h 15m
2026-07-12 RFS730 - Jul 12, 17:55 UTCJul 12, 18:50 UTC55m
2026-07-11 RFS730 - Jul 11, 21:40 UTCJul 11, 22:30 UTC50m
2026-07-11 RFS730 TIW → TIW Jul 11, 19:35 UTCJul 11, 19:55 UTC20m
2026-07-11 RFS730 - Jul 11, 17:25 UTCJul 11, 18:40 UTC1h 15m
2026-07-11 RFS730 - Jul 11, 00:05 UTCJul 11, 01:10 UTC1h 5m
2026-07-10 RFS730 - Jul 10, 22:00 UTCJul 10, 23:00 UTC1h 0m
2026-07-10 RFS730 - Jul 10, 19:45 UTCJul 10, 20:50 UTC1h 5m
2026-07-10 RFS730 - Jul 10, 15:30 UTCJul 10, 16:45 UTC1h 15m
2026-07-10 RFS730 - Jul 10, 05:00 UTCJul 10, 07:05 UTC2h 5m
2026-07-10 RFS730 - Jul 10, 02:55 UTCJul 10, 04:50 UTC1h 55m
2026-07-09 RFS730 TIW → TIW Jul 9, 23:50 UTCJul 10, 00:35 UTC45m
2026-07-09 RFS730 - Jul 9, 18:55 UTCJul 9, 20:35 UTC1h 40m
2026-07-09 RFS730 - Jul 9, 00:40 UTCJul 9, 01:50 UTC1h 10m
2026-07-08 RFS730 - Jul 8, 20:35 UTCJul 8, 21:45 UTC1h 10m
2026-07-07 RFS730 TIW → TIW Jul 7, 23:55 UTCJul 8, 00:40 UTC45m
2026-07-07 RFS730 - Jul 7, 19:35 UTCJul 7, 20:35 UTC1h 0m
2026-07-07 RFS730 TIW → TIW Jul 7, 03:55 UTCJul 7, 05:40 UTC1h 45m
2026-07-06 RFS730 TIW → TIW Jul 6, 19:55 UTCJul 6, 21:40 UTC1h 45m
2026-07-06 RFS730 - Jul 6, 17:40 UTCJul 6, 18:40 UTC1h 0m

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 N859JT page for operator, model, and routing details .

Mode-S ABC9A1 frequently asked

What is Mode-S code ABC9A1?
ABC9A1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N859JT.
Where is Mode-S ABC9A1 registered?
Mode-S code ABC9A1 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 ABC9A1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABC9A1, octal 52744641, decimal 11,258,273.
What flights does ABC9A1 operate?
Mode-S ABC9A1 has broadcast 1 distinct callsign, including RFS730.