Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACF9CF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N935SC · operated by LIMA AVIATION LLC

Hex
ACF9CF
Octal
53174717
Decimal
11,336,143
Country
US
Tail
N935SC
Type
C172
No current signal · last broadcast 20h ago
Flights observed
198
Distinct callsigns
1
Country
US
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S ACF9CF.

Country allocation

The ICAO 24-bit address ACF9CF 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
SCA35 - 198 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 SCA35 - Jul 17, 15:10 UTCJul 17, 15:35 UTC25m
2026-07-17 SCA35 - Jul 17, 14:39 UTCJul 17, 14:50 UTC10m
2026-07-17 SCA35 - Jul 17, 14:24 UTCJul 17, 14:35 UTC10m
2026-07-15 SCA35 - Jul 15, 19:40 UTCJul 15, 20:35 UTC55m
2026-07-15 SCA35 - Jul 15, 18:25 UTCJul 15, 19:05 UTC40m
2026-07-15 SCA35 - Jul 15, 15:00 UTCJul 15, 16:05 UTC1h 5m
2026-07-14 SCA35 - Jul 14, 16:40 UTCJul 14, 18:00 UTC1h 20m
2026-07-14 SCA35 - Jul 14, 13:20 UTCJul 14, 15:15 UTC1h 55m
2026-07-13 SCA35 - Jul 13, 16:20 UTCJul 13, 18:55 UTC2h 35m
2026-07-13 SCA35 - Jul 13, 13:15 UTCJul 13, 15:15 UTC2h 0m
2026-07-12 SCA35 - Jul 12, 15:25 UTCJul 12, 16:20 UTC55m
2026-07-12 SCA35 - Jul 12, 13:45 UTCJul 12, 14:50 UTC1h 5m
2026-07-11 SCA35 - Jul 11, 15:25 UTCJul 11, 17:50 UTC2h 25m
2026-07-11 SCA35 - Jul 11, 12:55 UTCJul 11, 14:00 UTC1h 5m
2026-07-09 SCA35 - Jul 9, 18:25 UTCJul 9, 18:45 UTC20m
2026-07-09 SCA35 GYR → GYR Jul 9, 17:00 UTCJul 9, 17:45 UTC45m
2026-07-09 SCA35 - Jul 9, 12:25 UTCJul 9, 12:45 UTC20m
2026-07-08 SCA35 - Jul 8, 17:25 UTCJul 8, 19:05 UTC1h 40m
2026-07-08 SCA35 - Jul 8, 14:20 UTCJul 8, 15:40 UTC1h 20m
2026-07-07 SCA35 - Jul 7, 19:15 UTCJul 7, 20:20 UTC1h 5m
2026-07-07 SCA35 - Jul 7, 16:20 UTCJul 7, 17:45 UTC1h 25m
2026-07-07 SCA35 - Jul 7, 14:15 UTCJul 7, 15:40 UTC1h 25m
2026-07-06 SCA35 - Jul 6, 17:25 UTCJul 6, 17:45 UTC20m
2026-07-06 SCA35 - Jul 6, 15:15 UTCJul 6, 16:10 UTC55m
2026-07-06 SCA35 - Jul 6, 13:10 UTCJul 6, 13:30 UTC20m
2026-07-03 SCA35 - Jul 3, 16:25 UTCJul 3, 17:45 UTC1h 20m
2026-07-03 SCA35 - Jul 3, 13:40 UTCJul 3, 14:50 UTC1h 10m
2026-07-02 SCA35 - Jul 2, 13:35 UTCJul 2, 15:40 UTC2h 5m
2026-07-01 SCA35 - Jul 1, 17:10 UTCJul 1, 18:05 UTC55m
2026-07-01 SCA35 - Jul 1, 13:20 UTCJul 1, 14:35 UTC1h 15m
2026-06-30 SCA35 - Jun 30, 17:20 UTCJun 30, 18:40 UTC1h 20m
2026-06-30 SCA35 - Jun 30, 14:40 UTCJun 30, 15:30 UTC50m
2026-06-30 SCA35 - Jun 30, 13:30 UTCJun 30, 14:05 UTC35m
2026-06-29 SCA35 - Jun 29, 15:00 UTCJun 29, 17:10 UTC2h 10m
2026-06-29 SCA35 - Jun 29, 13:04 UTCJun 29, 13:39 UTC35m
2026-06-29 SCA35 - Jun 29, 12:00 UTCJun 29, 13:00 UTC1h 0m
2026-06-28 SCA35 - Jun 28, 14:50 UTCJun 28, 17:19 UTC2h 30m
2026-06-27 SCA35 - Jun 27, 18:35 UTCJun 27, 19:55 UTC1h 20m
2026-06-27 SCA35 - Jun 27, 14:35 UTCJun 27, 15:55 UTC1h 20m
2026-06-27 SCA35 - Jun 27, 02:45 UTCJun 27, 05:04 UTC2h 20m
2026-06-26 SCA35 - Jun 26, 15:20 UTCJun 26, 16:14 UTC55m
2026-06-25 SCA35 - Jun 25, 23:30 UTCJun 26, 01:39 UTC2h 10m
2026-06-25 SCA35 - Jun 25, 15:04 UTCJun 25, 16:50 UTC1h 45m
2026-06-25 SCA35 - Jun 25, 13:24 UTCJun 25, 14:55 UTC1h 30m
2026-06-23 SCA35 - Jun 23, 17:25 UTCJun 23, 19:29 UTC2h 5m
2026-06-23 SCA35 - Jun 23, 15:04 UTCJun 23, 16:20 UTC1h 15m
2026-06-22 SCA35 - Jun 22, 16:34 UTCJun 22, 17:25 UTC50m
2026-06-22 SCA35 SCF → GYR Jun 22, 15:54 UTCJun 22, 16:24 UTC30m
2026-06-21 SCA35 - Jun 21, 16:25 UTCJun 21, 18:25 UTC2h 0m
2026-06-20 SCA35 - Jun 20, 17:44 UTCJun 20, 18:59 UTC1h 15m

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 N935SC page for operator, model, and routing details .

Mode-S ACF9CF frequently asked

What is Mode-S code ACF9CF?
ACF9CF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N935SC.
Where is Mode-S ACF9CF registered?
Mode-S code ACF9CF 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 ACF9CF broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACF9CF, octal 53174717, decimal 11,336,143.
What flights does ACF9CF operate?
Mode-S ACF9CF has broadcast 1 distinct callsign, including SCA35.