Apparatus

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sensors Mode-S transponder

AC748A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N901SY · BOEING 737-900 · operated by SUN COUNTRY INC

Hex
AC748A
Octal
53072212
Decimal
11,302,026
Country
US
Tail
N901SY
Type
B739
No current signal · last broadcast 1d ago
Flights observed
95
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC748A.

Country allocation

The ICAO 24-bit address AC748A 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
SCX608 Sun Country Airlines 8 2026-05-28
SCX607 Sun Country Airlines 7 2026-05-27
SCX421 Sun Country Airlines 5 2026-06-01
SCX422 Sun Country Airlines 4 2026-06-01
SCX252 Sun Country Airlines 4 2026-05-17
SCX251 Sun Country Airlines 4 2026-05-17
SCX108 Sun Country Airlines 4 2026-05-26
SCX107 Sun Country Airlines 4 2026-05-25
SCX104 Sun Country Airlines 4 2026-05-21
SCX103 Sun Country Airlines 4 2026-05-21
SCX602 Sun Country Airlines 3 2026-05-23
SCX601 Sun Country Airlines 3 2026-05-23
SCX344 Sun Country Airlines 3 2026-05-07
SCX343 Sun Country Airlines 3 2026-05-07
SCX342 Sun Country Airlines 3 2026-05-25
SCX341 Sun Country Airlines 3 2026-05-25
SCX102 Sun Country Airlines 3 2026-05-14
SCX101 Sun Country Airlines 3 2026-05-14
SCX426 Sun Country Airlines 2 2026-05-18
SCX425 Sun Country Airlines 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 SCX422 LAX → MSP Jun 1, 16:00 UTCJun 1, 18:55 UTC2h 55m
2026-06-01 SCX421 MSP → LAX Jun 1, 11:10 UTCJun 1, 14:40 UTC3h 30m
2026-05-31 SCX384 RSW → MSP May 31, 16:40 UTCMay 31, 19:55 UTC3h 15m
2026-05-31 SCX383 MSP → RSW May 31, 12:15 UTCMay 31, 15:10 UTC2h 55m
2026-05-30 SCX424 LAX → MSP May 30, 17:40 UTCMay 30, 20:45 UTC3h 5m
2026-05-30 SCX423 MSP → LAX May 30, 12:40 UTCMay 30, 15:55 UTC3h 15m
2026-05-28 SCX608 PHX → MSP May 28, 01:40 UTCMay 28, 04:15 UTC2h 35m
2026-05-27 SCX607 MSP → PHX May 27, 21:20 UTCMay 28, 00:00 UTC2h 40m
2026-05-26 SCX108 LAS → MSP May 26, 01:49 UTCMay 26, 04:30 UTC2h 40m
2026-05-25 SCX107 MSP → LAS May 25, 21:24 UTCMay 26, 00:14 UTC2h 50m
2026-05-25 SCX342 MCO → MSP May 25, 16:45 UTCMay 25, 19:44 UTC3h 0m
2026-05-25 SCX341 MSP → MCO May 25, 12:35 UTCMay 25, 15:20 UTC2h 45m
2026-05-24 SCX106 LAS → MSP May 24, 21:30 UTCMay 24, 23:46 UTC2h 16m
2026-05-24 SCX105 MSP → LAS May 24, 17:05 UTCMay 24, 20:00 UTC2h 55m
2026-05-23 SCX602 PHX → MSP May 23, 17:05 UTCMay 23, 19:35 UTC2h 30m
2026-05-23 SCX601 MSP → PHX May 23, 12:45 UTCMay 23, 15:40 UTC2h 55m
2026-05-23 SCX348 MCO → MSP May 23, 00:45 UTCMay 23, 03:40 UTC2h 54m
2026-05-22 SCX347 MSP → MCO May 22, 20:20 UTCMay 22, 23:15 UTC2h 55m
2026-05-22 SCX214 TPA → MSP May 22, 16:05 UTCMay 22, 19:05 UTC3h 0m
2026-05-22 SCX213 MSP → TPA May 22, 11:55 UTCMay 22, 14:40 UTC2h 45m
2026-05-21 SCX104 LAS → MSP May 21, 18:25 UTCMay 21, 21:05 UTC2h 40m
2026-05-21 SCX103 MSP → LAS May 21, 13:25 UTCMay 21, 16:25 UTC3h 0m
2026-05-18 SCX104 LAS → MSP May 18, 18:40 UTCMay 18, 21:10 UTC2h 30m
2026-05-18 SCX103 MSP → LAS May 18, 13:45 UTCMay 18, 16:45 UTC3h 0m
2026-05-18 SCX426 LAX → MSP May 18, 01:10 UTCMay 18, 04:40 UTC3h 30m
2026-05-17 SCX425 MSP → LAX May 17, 20:15 UTCMay 17, 23:50 UTC3h 35m
2026-05-17 SCX252 BOS → MSP May 17, 16:01 UTCMay 17, 18:45 UTC2h 45m
2026-05-17 SCX251 MSP → BOS May 17, 12:05 UTCMay 17, 14:20 UTC2h 15m
2026-05-16 SCX104 LAS → MSP May 16, 18:05 UTCMay 16, 20:35 UTC2h 30m
2026-05-16 SCX103 MSP → LAS May 16, 13:46 UTCMay 16, 16:50 UTC3h 5m
2026-05-15 SCX104 LAS → MSP May 15, 18:25 UTCMay 15, 21:00 UTC2h 35m
2026-05-15 SCX103 MSP → LAS May 15, 13:40 UTCMay 15, 16:30 UTC2h 49m
2026-05-15 SCX388 RSW → MSP May 15, 00:05 UTCMay 15, 03:20 UTC3h 15m
2026-05-14 SCX387 MSP → RSW May 14, 19:50 UTCMay 14, 22:45 UTC2h 55m
2026-05-14 SCX102 LAS → MSP May 14, 15:50 UTCMay 14, 18:30 UTC2h 40m
2026-05-14 SCX101 MSP → LAS May 14, 11:15 UTCMay 14, 14:05 UTC2h 50m
2026-05-09 SCX386 RSW → MSP May 9, 19:35 UTCMay 9, 22:45 UTC3h 10m
2026-05-09 SCX385 MSP → RSW May 9, 15:00 UTCMay 9, 17:49 UTC2h 50m
2026-05-08 SCX102 LAS → MSP May 8, 15:55 UTCMay 8, 18:50 UTC2h 55m
2026-05-08 SCX101 MSP → LAS May 8, 11:14 UTCMay 8, 14:05 UTC2h 50m
2026-05-08 SCX108 LAS → MSP May 8, 01:59 UTCMay 8, 04:44 UTC2h 45m
2026-05-07 SCX107 MSP → LAS May 7, 21:55 UTCMay 8, 00:49 UTC2h 54m
2026-05-07 SCX344 MCO → MSP May 7, 17:40 UTCMay 7, 20:50 UTC3h 10m
2026-05-07 SCX343 MSP → MCO May 7, 13:05 UTCMay 7, 16:20 UTC3h 15m
2026-05-05 SCX426 LAX → MSP May 5, 01:55 UTCMay 5, 04:45 UTC2h 50m
2026-05-04 SCX425 MSP → LAX May 4, 20:35 UTCMay 5, 00:35 UTC4h 0m
2026-05-04 SCX252 BOS → MSP May 4, 15:40 UTCMay 4, 18:35 UTC2h 56m
2026-05-04 SCX251 MSP → BOS May 4, 12:10 UTCMay 4, 14:20 UTC2h 10m
2026-05-04 SCX108 LAS → MSP May 4, 02:10 UTCMay 4, 04:44 UTC2h 35m
2026-05-03 SCX107 MSP → LAS May 3, 21:50 UTCMay 4, 00:55 UTC3h 5m

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 N901SY page for operator, model, and routing details .

Mode-S AC748A frequently asked

What is Mode-S code AC748A?
AC748A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N901SY.
Where is Mode-S AC748A registered?
Mode-S code AC748A 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 AC748A broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC748A, octal 53072212, decimal 11,302,026.
What flights does AC748A operate?
Mode-S AC748A has broadcast 20 distinct callsigns, including SCX608, SCX607, SCX421, SCX422, SCX252.