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
Broadcasting now · callsign SCX472 · 35,000 ft
Flights observed
185
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AC748A is currently broadcasting. Map zoomed to live position.

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
SCX108 - 12 2026-07-16
SCX107 - 12 2026-07-15
SCX104 - 11 2026-07-14
SCX103 - 11 2026-07-14
SCX608 Sun Country Airlines 8 2026-05-28
SCX607 Sun Country Airlines 7 2026-05-27
SCX421 - 7 2026-07-12
SCX422 - 6 2026-07-12
SCX342 - 6 2026-07-10
SCX341 - 6 2026-07-10
SCX252 - 6 2026-07-13
SCX251 - 6 2026-07-13
SCX344 - 5 2026-06-26
SCX343 - 5 2026-06-26
SCX426 - 4 2026-07-14
SCX425 - 4 2026-07-13
SCX384 - 4 2026-07-15
SCX383 - 4 2026-07-15
SCX214 - 4 2026-07-03
SCX213 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 SCX472 - Jul 17, 22:00 UTCJul 17, 22:29 UTC30m
2026-07-17 SCX471 MSP → ANC Jul 17, 15:00 UTCJul 17, 20:35 UTC5h 35m
2026-07-17 SCX472 - Jul 17, 02:05 UTCJul 17, 02:25 UTC20m
2026-07-16 SCX472 - Jul 16, 21:40 UTCJul 16, 22:49 UTC1h 10m
2026-07-16 SCX471 MSP → ANC Jul 16, 14:50 UTCJul 16, 20:25 UTC5h 35m
2026-07-16 SCX108 LAS → MSP Jul 16, 01:45 UTCJul 16, 04:25 UTC2h 40m
2026-07-15 SCX107 MSP → LAS Jul 15, 20:55 UTCJul 15, 23:35 UTC2h 40m
2026-07-15 SCX384 RSW → MSP Jul 15, 16:10 UTCJul 15, 19:05 UTC2h 55m
2026-07-15 SCX383 MSP → RSW Jul 15, 11:30 UTCJul 15, 14:25 UTC2h 55m
2026-07-14 SCX104 LAS → MSP Jul 14, 18:10 UTCJul 14, 20:50 UTC2h 40m
2026-07-14 SCX103 MSP → LAS Jul 14, 13:50 UTCJul 14, 16:30 UTC2h 40m
2026-07-14 SCX426 - Jul 14, 00:50 UTCJul 14, 04:05 UTC3h 15m
2026-07-13 SCX425 - Jul 13, 20:00 UTCJul 13, 23:05 UTC3h 5m
2026-07-13 SCX252 BOS → MSP Jul 13, 15:45 UTCJul 13, 18:10 UTC2h 25m
2026-07-13 SCX251 MSP → BOS Jul 13, 12:15 UTCJul 13, 14:40 UTC2h 25m
2026-07-13 SCX426 - Jul 13, 01:40 UTCJul 13, 04:55 UTC3h 15m
2026-07-12 SCX425 - Jul 12, 20:55 UTCJul 13, 00:01 UTC3h 5m
2026-07-12 SCX422 - Jul 12, 16:10 UTCJul 12, 19:20 UTC3h 10m
2026-07-12 SCX421 MSP → LAX Jul 12, 11:10 UTCJul 12, 14:30 UTC3h 20m
2026-07-11 SCX104 LAS → MSP Jul 11, 18:10 UTCJul 11, 20:45 UTC2h 35m
2026-07-11 SCX103 MSP → LAS Jul 11, 13:40 UTCJul 11, 16:25 UTC2h 45m
2026-07-11 SCX108 LAS → MSP Jul 11, 02:15 UTCJul 11, 04:55 UTC2h 40m
2026-07-10 SCX107 MSP → LAS Jul 10, 21:40 UTCJul 11, 00:30 UTC2h 50m
2026-07-10 SCX342 MCO → MSP Jul 10, 17:00 UTCJul 10, 19:50 UTC2h 50m
2026-07-10 SCX341 MSP → MCO Jul 10, 12:50 UTCJul 10, 15:30 UTC2h 40m
2026-07-10 SCX604 PHX → MSP Jul 10, 00:00 UTCJul 10, 02:45 UTC2h 45m
2026-07-09 SCX603 MSP → PHX Jul 9, 19:45 UTCJul 9, 22:35 UTC2h 50m
2026-07-09 SCX254 BOS → MSP Jul 9, 15:25 UTCJul 9, 18:05 UTC2h 40m
2026-07-09 SCX253 MSP → BOS Jul 9, 11:45 UTCJul 9, 14:00 UTC2h 15m
2026-07-06 SCX104 LAS → MSP Jul 6, 17:55 UTCJul 6, 20:30 UTC2h 35m
2026-07-06 SCX103 MSP → LAS Jul 6, 13:40 UTCJul 6, 16:25 UTC2h 45m
2026-07-06 SCX604 PHX → MSP Jul 6, 00:00 UTCJul 6, 02:40 UTC2h 40m
2026-07-05 SCX603 MSP → PHX Jul 5, 19:50 UTCJul 5, 22:25 UTC2h 35m
2026-07-05 SCX384 RSW → MSP Jul 5, 14:50 UTCJul 5, 17:50 UTC3h 0m
2026-07-05 SCX383 MSP → RSW Jul 5, 10:40 UTCJul 5, 13:40 UTC3h 0m
2026-07-04 SCX108 LAS → MSP Jul 4, 01:30 UTCJul 4, 04:15 UTC2h 45m
2026-07-03 SCX107 MSP → LAS Jul 3, 20:55 UTCJul 3, 23:50 UTC2h 55m
2026-07-03 SCX214 TPA → MSP Jul 3, 15:55 UTCJul 3, 18:55 UTC3h 0m
2026-07-03 SCX213 MSP → TPA Jul 3, 11:50 UTCJul 3, 14:35 UTC2h 45m
2026-07-03 SCX108 LAS → MSP Jul 3, 01:45 UTCJul 3, 04:25 UTC2h 40m
2026-07-02 SCX107 MSP → LAS Jul 2, 21:20 UTCJul 3, 00:15 UTC2h 55m
2026-07-02 SCX422 - Jul 2, 16:30 UTCJul 2, 19:30 UTC3h 0m
2026-07-02 SCX421 - Jul 2, 11:10 UTCJul 2, 14:45 UTC3h 35m
2026-07-01 SCX384 RSW → MSP Jul 1, 18:15 UTCJul 1, 21:10 UTC2h 55m
2026-07-01 SCX383 MSP → RSW Jul 1, 13:30 UTCJul 1, 16:50 UTC3h 20m
2026-07-01 SCX108 LAS → MSP Jul 1, 02:25 UTCJul 1, 04:55 UTC2h 30m
2026-06-30 SCX107 MSP → LAS Jun 30, 21:10 UTCJul 1, 00:15 UTC3h 5m
2026-06-30 SCX342 MCO → MSP Jun 30, 16:55 UTCJun 30, 19:50 UTC2h 55m
2026-06-30 SCX341 MSP → MCO Jun 30, 12:25 UTCJun 30, 15:15 UTC2h 50m
2026-06-29 SCX252 BOS → MSP Jun 29, 17:19 UTCJun 29, 19:54 UTC2h 35m

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?
Yes. Mode-S AC748A is currently airborne.
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 SCX108, SCX107, SCX104, SCX103, SCX608.