Apparatus

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sensors Mode-S transponder

AC7FAF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N904SY · operated by SUN COUNTRY INC

Hex
AC7FAF
Octal
53077657
Decimal
11,304,879
Country
US
Tail
N904SY
Type
B739
No current signal · last broadcast 14h ago
Flights observed
214
Distinct callsigns
20
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S AC7FAF.

Country allocation

The ICAO 24-bit address AC7FAF 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 20 distinct

Callsign Airline Flights Last seen
SCX426 - 13 2026-07-10
SCX601 Sun Country Airlines 11 2026-06-12
SCX425 - 11 2026-07-09
SCX384 Sun Country Airlines 11 2026-06-25
SCX383 - 11 2026-06-25
SCX602 - 10 2026-06-12
SCX107 - 9 2026-06-20
SCX214 - 8 2026-07-12
SCX213 - 8 2026-07-12
SCX108 - 8 2026-06-21
SCX347 - 6 2026-07-12
SCX343 - 6 2026-06-29
SCX252 - 6 2026-06-28
SCX251 Sun Country Airlines 6 2026-06-28
SCX348 - 5 2026-07-13
SCX344 - 5 2026-06-29
SCX254 - 5 2026-07-10
SCX253 - 5 2026-07-10
SCX606 - 4 2026-06-25
SCX605 - 4 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SCX104 LAS → MSP Jul 13, 18:00 UTCJul 13, 20:45 UTC2h 45m
2026-07-13 SCX103 MSP → LAS Jul 13, 13:30 UTCJul 13, 16:05 UTC2h 35m
2026-07-13 SCX348 - Jul 13, 00:10 UTCJul 13, 03:01 UTC2h 50m
2026-07-12 SCX347 MSP → MCO Jul 12, 20:05 UTCJul 12, 22:50 UTC2h 45m
2026-07-12 SCX214 TPA → MSP Jul 12, 15:50 UTCJul 12, 18:40 UTC2h 50m
2026-07-12 SCX213 MSP → TPA Jul 12, 11:25 UTCJul 12, 14:05 UTC2h 40m
2026-07-11 SCX424 - Jul 11, 19:30 UTCJul 11, 22:35 UTC3h 5m
2026-07-11 SCX423 - Jul 11, 14:35 UTCJul 11, 17:45 UTC3h 10m
2026-07-10 SCX604 PHX → MSP Jul 10, 23:10 UTCJul 11, 01:45 UTC2h 35m
2026-07-10 SCX603 MSP → PHX Jul 10, 19:10 UTCJul 10, 21:50 UTC2h 40m
2026-07-10 SCX254 BOS → MSP Jul 10, 15:05 UTCJul 10, 17:45 UTC2h 40m
2026-07-10 SCX253 MSP → BOS Jul 10, 10:50 UTCJul 10, 13:10 UTC2h 20m
2026-07-10 SCX426 - Jul 10, 01:35 UTCJul 10, 04:50 UTC3h 15m
2026-07-09 SCX425 - Jul 9, 20:45 UTCJul 10, 00:15 UTC3h 30m
2026-07-09 SCX214 TPA → MSP Jul 9, 16:20 UTCJul 9, 19:10 UTC2h 50m
2026-07-09 SCX213 MSP → TPA Jul 9, 12:30 UTCJul 9, 15:15 UTC2h 45m
2026-07-07 SCX346 MCO → MSP Jul 7, 00:20 UTCJul 7, 03:10 UTC2h 50m
2026-07-06 SCX345 MSP → MCO Jul 6, 18:55 UTCJul 6, 21:45 UTC2h 50m
2026-07-06 SCX254 BOS → MSP Jul 6, 14:50 UTCJul 6, 17:25 UTC2h 35m
2026-07-06 SCX253 MSP → BOS Jul 6, 11:05 UTCJul 6, 13:25 UTC2h 20m
2026-07-06 SCX426 - Jul 6, 01:25 UTCJul 6, 04:30 UTC3h 5m
2026-07-05 SCX425 - Jul 5, 20:20 UTCJul 5, 23:30 UTC3h 10m
2026-07-05 SCX214 TPA → MSP Jul 5, 16:05 UTCJul 5, 18:50 UTC2h 45m
2026-07-05 SCX213 MSP → TPA Jul 5, 11:55 UTCJul 5, 14:40 UTC2h 45m
2026-07-03 SCX426 - Jul 3, 01:15 UTCJul 3, 04:25 UTC3h 10m
2026-07-02 SCX425 - Jul 2, 20:45 UTCJul 3, 00:05 UTC3h 20m
2026-07-02 SCX214 TPA → MSP Jul 2, 16:10 UTCJul 2, 19:05 UTC2h 55m
2026-07-02 SCX213 MSP → TPA Jul 2, 12:00 UTCJul 2, 15:00 UTC3h 0m
2026-06-29 SCX344 ORL → MSP Jun 29, 18:34 UTCJun 29, 21:30 UTC2h 55m
2026-06-29 SCX343 - Jun 29, 16:50 UTCJun 29, 16:59 UTC10m
2026-06-29 SCX343 - Jun 29, 14:04 UTCJun 29, 16:44 UTC2h 40m
2026-06-29 SCX426 - Jun 29, 01:39 UTCJun 29, 04:25 UTC2h 45m
2026-06-28 SCX425 - Jun 28, 20:45 UTCJun 29, 00:24 UTC3h 40m
2026-06-28 SCX252 BOS → MSP Jun 28, 16:09 UTCJun 28, 18:49 UTC2h 40m
2026-06-28 SCX251 MSP → BOS Jun 28, 12:39 UTCJun 28, 14:59 UTC2h 20m
2026-06-27 SCX104 LAS → MSP Jun 27, 18:09 UTCJun 27, 20:34 UTC2h 25m
2026-06-27 SCX103 MSP → LAS Jun 27, 13:40 UTCJun 27, 16:39 UTC3h 0m
2026-06-27 SCX426 - Jun 27, 01:04 UTCJun 27, 04:05 UTC3h 0m
2026-06-26 SCX425 MSP → LAX Jun 26, 20:15 UTCJun 26, 23:44 UTC3h 30m
2026-06-26 SCX252 BOS → MSP Jun 26, 15:54 UTCJun 26, 18:54 UTC3h 0m
2026-06-26 SCX251 MSP → BOS Jun 26, 12:14 UTCJun 26, 14:29 UTC2h 15m
2026-06-26 SCX430 - Jun 26, 07:24 UTCJun 26, 10:25 UTC3h 0m
2026-06-26 SCX429 - Jun 26, 02:00 UTCJun 26, 05:30 UTC3h 30m
2026-06-25 SCX384 RSW → MSP Jun 25, 18:29 UTCJun 25, 21:40 UTC3h 10m
2026-06-25 SCX383 MSP → RSW Jun 25, 14:09 UTCJun 25, 17:09 UTC3h 0m
2026-06-25 SCX606 PHX → MSP Jun 25, 00:59 UTCJun 25, 03:34 UTC2h 35m
2026-06-24 SCX605 MSP → PHX Jun 24, 20:35 UTCJun 24, 23:34 UTC3h 0m
2026-06-24 SCX214 TPA → MSP Jun 24, 15:59 UTCJun 24, 19:04 UTC3h 5m
2026-06-24 SCX213 MSP → TPA Jun 24, 11:45 UTCJun 24, 14:24 UTC2h 40m
2026-06-22 SCX348 MCO → MSP Jun 22, 23:24 UTCJun 23, 02:15 UTC2h 50m

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 N904SY page for operator, model, and routing details .

Mode-S AC7FAF frequently asked

What is Mode-S code AC7FAF?
AC7FAF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N904SY.
Where is Mode-S AC7FAF registered?
Mode-S code AC7FAF 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 AC7FAF broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7FAF, octal 53077657, decimal 11,304,879.
What flights does AC7FAF operate?
Mode-S AC7FAF has broadcast 20 distinct callsigns, including SCX426, SCX601, SCX425, SCX384, SCX383.