Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 Jul 26, 21:45 UTC
Flights observed
249
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

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 Sun Country Airlines 15 2026-07-25
SCX425 Sun Country Airlines 13 2026-07-24
SCX384 Sun Country Airlines 12 2026-07-19
SCX383 - 12 2026-07-19
SCX601 Sun Country Airlines 11 2026-06-12
SCX602 - 10 2026-06-12
SCX107 Sun Country Airlines 10 2026-07-18
SCX214 - 9 2026-07-16
SCX213 - 9 2026-07-16
SCX108 Sun Country Airlines 9 2026-07-19
SCX252 Sun Country Airlines 8 2026-07-25
SCX251 Sun Country Airlines 8 2026-07-25
SCX254 Sun Country Airlines 7 2026-07-26
SCX253 Sun Country Airlines 7 2026-07-26
SCX424 Sun Country Airlines 6 2026-07-21
SCX423 Sun Country Airlines 6 2026-07-21
SCX347 - 6 2026-07-12
SCX343 - 6 2026-06-29
SCX342 Sun Country Airlines 6 2026-07-22
SCX341 Sun Country Airlines 6 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SCX345 MSP → MCO Jul 26, 19:00 UTCJul 26, 21:45 UTC2h 45m
2026-07-26 SCX254 BOS → MSP Jul 26, 14:45 UTCJul 26, 17:30 UTC2h 45m
2026-07-26 SCX253 MSP → BOS Jul 26, 11:10 UTCJul 26, 13:30 UTC2h 20m
2026-07-26 SCX106 LAS → MSP Jul 26, 00:30 UTCJul 26, 03:20 UTC2h 50m
2026-07-25 SCX105 MSP → LAS Jul 25, 20:05 UTCJul 25, 22:45 UTC2h 40m
2026-07-25 SCX252 BOS → MSP Jul 25, 15:50 UTCJul 25, 18:30 UTC2h 40m
2026-07-25 SCX251 MSP → BOS Jul 25, 12:05 UTCJul 25, 14:25 UTC2h 20m
2026-07-25 SCX426 LAX → MSP Jul 25, 01:05 UTCJul 25, 04:05 UTC3h 0m
2026-07-24 SCX425 MSP → LAX Jul 24, 20:15 UTCJul 24, 23:25 UTC3h 10m
2026-07-24 SCX252 BOS → MSP Jul 24, 16:05 UTCJul 24, 18:50 UTC2h 45m
2026-07-24 SCX251 MSP → BOS Jul 24, 12:35 UTCJul 24, 14:50 UTC2h 15m
2026-07-23 SCX472 ANC → MSP Jul 23, 21:45 UTCJul 24, 02:25 UTC4h 40m
2026-07-23 SCX471 MSP → ANC Jul 23, 14:50 UTCJul 23, 20:35 UTC5h 45m
2026-07-22 SCX342 MCO → MSP Jul 22, 17:00 UTCJul 22, 20:00 UTC3h 0m
2026-07-22 SCX341 MSP → MCO Jul 22, 12:30 UTCJul 22, 15:05 UTC2h 35m
2026-07-21 SCX424 LAX → MSP Jul 21, 19:00 UTCJul 21, 22:10 UTC3h 10m
2026-07-21 SCX423 MSP → LAX Jul 21, 14:10 UTCJul 21, 17:15 UTC3h 5m
2026-07-20 SCX472 ANC → MSP Jul 20, 22:30 UTCJul 21, 03:20 UTC4h 50m
2026-07-20 SCX471 MSP → ANC Jul 20, 15:45 UTCJul 20, 21:15 UTC5h 30m
2026-07-20 SCX250 BOS → MSP Jul 20, 11:35 UTCJul 20, 14:20 UTC2h 45m
2026-07-20 SCX249 MSP → BOS Jul 20, 01:05 UTCJul 20, 03:20 UTC2h 15m
2026-07-19 SCX384 RSW → MSP Jul 19, 17:35 UTCJul 19, 20:50 UTC3h 15m
2026-07-19 SCX383 MSP → RSW Jul 19, 13:00 UTCJul 19, 16:00 UTC3h 0m
2026-07-19 SCX108 LAS → MSP Jul 19, 01:40 UTCJul 19, 04:25 UTC2h 45m
2026-07-18 SCX107 MSP → LAS Jul 18, 21:25 UTCJul 19, 00:10 UTC2h 45m
2026-07-18 SCX342 MCO → MSP Jul 18, 16:45 UTCJul 18, 19:35 UTC2h 50m
2026-07-18 SCX341 MSP → MCO Jul 18, 12:30 UTCJul 18, 15:15 UTC2h 45m
2026-07-17 SCX254 BOS → MSP Jul 17, 15:00 UTCJul 17, 17:40 UTC2h 40m
2026-07-17 SCX253 MSP → BOS Jul 17, 11:00 UTCJul 17, 13:15 UTC2h 15m
2026-07-17 SCX426 LAX → MSP Jul 17, 02:05 UTCJul 17, 05:30 UTC3h 25m
2026-07-16 SCX425 - Jul 16, 20:49 UTCJul 17, 00:04 UTC3h 15m
2026-07-16 SCX214 TPA → MSP Jul 16, 16:00 UTCJul 16, 18:50 UTC2h 50m
2026-07-16 SCX213 MSP → TPA Jul 16, 11:45 UTCJul 16, 14:40 UTC2h 55m
2026-07-14 SCX424 - Jul 14, 19:00 UTCJul 14, 22:15 UTC3h 15m
2026-07-14 SCX423 - Jul 14, 14:00 UTCJul 14, 17:05 UTC3h 5m
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

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 Jul 26, 21:45 UTC.
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, SCX425, SCX384, SCX383, SCX601.