Apparatus

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sensors Mode-S transponder

AC7BF8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N903SY · BOEING 737-900 · operated by SUN COUNTRY AIRLINES

Hex
AC7BF8
Octal
53075770
Decimal
11,303,928
Country
US
Tail
N903SY
Type
B739
No current signal · last broadcast 10h ago
Flights observed
216
Distinct callsigns
20
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S AC7BF8.

Country allocation

The ICAO 24-bit address AC7BF8 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
SCX341 - 20 2026-07-11
SCX342 - 17 2026-07-11
SCX425 - 15 2026-07-10
SCX426 - 14 2026-07-11
SCX252 - 10 2026-07-10
SCX251 - 10 2026-07-10
SCX107 - 10 2026-07-09
SCX108 - 9 2026-07-10
SCX601 - 6 2026-06-29
SCX384 - 6 2026-07-13
SCX608 Sun Country Airlines 5 2026-06-06
SCX607 Sun Country Airlines 5 2026-06-05
SCX602 - 5 2026-06-29
SCX214 - 5 2026-06-17
SCX213 - 5 2026-06-17
SCX604 - 4 2026-07-03
SCX603 - 4 2026-07-03
SCX422 - 4 2026-06-26
SCX421 - 4 2026-06-26
SCX383 - 4 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SCX384 RSW → MSP Jul 13, 17:25 UTCJul 13, 20:40 UTC3h 15m
2026-07-13 SCX389 MSP → RSW Jul 13, 00:50 UTCJul 13, 03:45 UTC2h 55m
2026-07-11 SCX342 - Jul 11, 16:50 UTCJul 11, 19:45 UTC2h 55m
2026-07-11 SCX341 - Jul 11, 12:30 UTCJul 11, 15:25 UTC2h 55m
2026-07-11 SCX426 - Jul 11, 01:15 UTCJul 11, 04:15 UTC3h 0m
2026-07-10 SCX425 - Jul 10, 20:20 UTCJul 10, 23:35 UTC3h 15m
2026-07-10 SCX252 BOS → MSP Jul 10, 16:15 UTCJul 10, 18:50 UTC2h 35m
2026-07-10 SCX251 MSP → BOS Jul 10, 12:15 UTCJul 10, 14:40 UTC2h 25m
2026-07-10 SCX108 LAS → MSP Jul 10, 00:50 UTCJul 10, 03:30 UTC2h 40m
2026-07-09 SCX107 MSP → LAS Jul 9, 20:25 UTCJul 9, 23:20 UTC2h 55m
2026-07-09 SCX252 BOS → MSP Jul 9, 16:05 UTCJul 9, 18:45 UTC2h 40m
2026-07-09 SCX251 MSP → BOS Jul 9, 12:25 UTCJul 9, 14:40 UTC2h 15m
2026-07-06 SCX384 RSW → MSP Jul 6, 16:50 UTCJul 6, 19:50 UTC3h 0m
2026-07-05 SCX389 MSP → RSW Jul 5, 23:50 UTCJul 6, 03:00 UTC3h 10m
2026-07-05 SCX104 LAS → MSP Jul 5, 18:20 UTCJul 5, 20:55 UTC2h 35m
2026-07-05 SCX103 MSP → LAS Jul 5, 14:10 UTCJul 5, 16:55 UTC2h 45m
2026-07-03 SCX604 PHX → MSP Jul 3, 23:05 UTCJul 4, 01:40 UTC2h 35m
2026-07-03 SCX603 MSP → PHX Jul 3, 18:50 UTCJul 3, 21:40 UTC2h 50m
2026-07-03 SCX254 BOS → MSP Jul 3, 14:50 UTCJul 3, 17:25 UTC2h 35m
2026-07-03 SCX253 MSP → BOS Jul 3, 11:05 UTCJul 3, 13:25 UTC2h 20m
2026-07-03 SCX606 PHX → MSP Jul 3, 02:10 UTCJul 3, 04:50 UTC2h 40m
2026-07-02 SCX605 MSP → PHX Jul 2, 22:05 UTCJul 3, 00:55 UTC2h 50m
2026-07-02 SCX342 ORL → MSP Jul 2, 17:10 UTCJul 2, 20:15 UTC3h 5m
2026-07-02 SCX341 MSP → MCO Jul 2, 13:00 UTCJul 2, 16:05 UTC3h 5m
2026-06-29 SCX602 PHX → MSP Jun 29, 17:40 UTCJun 29, 20:04 UTC2h 25m
2026-06-29 SCX601 MSP → PHX Jun 29, 13:09 UTCJun 29, 16:10 UTC3h 0m
2026-06-29 SCX108 LAS → MSP Jun 29, 01:29 UTCJun 29, 03:54 UTC2h 25m
2026-06-28 SCX107 MSP → LAS Jun 28, 21:04 UTCJun 29, 00:24 UTC3h 20m
2026-06-28 SCX384 RSW → MSP Jun 28, 16:14 UTCJun 28, 19:20 UTC3h 5m
2026-06-28 SCX383 MSP → RSW Jun 28, 12:09 UTCJun 28, 14:59 UTC2h 50m
2026-06-27 SCX108 LAS → MSP Jun 27, 01:39 UTCJun 27, 04:15 UTC2h 35m
2026-06-26 SCX107 MSP → LAS Jun 26, 21:04 UTCJun 27, 00:05 UTC3h 0m
2026-06-26 SCX422 - Jun 26, 16:30 UTCJun 26, 19:30 UTC3h 0m
2026-06-26 SCX421 MSP → LAX Jun 26, 11:14 UTCJun 26, 14:39 UTC3h 25m
2026-06-26 SCX426 - Jun 26, 01:54 UTCJun 26, 04:45 UTC2h 50m
2026-06-25 SCX425 - Jun 25, 20:49 UTCJun 26, 00:24 UTC3h 35m
2026-06-25 SCX252 BOS → MSP Jun 25, 16:35 UTCJun 25, 19:24 UTC2h 50m
2026-06-25 SCX251 MSP → BOS Jun 25, 12:25 UTCJun 25, 14:39 UTC2h 15m
2026-06-24 SCX424 - Jun 24, 18:44 UTCJun 24, 21:44 UTC3h 0m
2026-06-24 SCX423 MSP → LAX Jun 24, 13:54 UTCJun 24, 17:29 UTC3h 35m
2026-06-22 SCX344 MCO → MSP Jun 22, 17:50 UTCJun 22, 20:49 UTC3h 0m
2026-06-22 SCX343 MSP → MCO Jun 22, 13:44 UTCJun 22, 16:24 UTC2h 40m
2026-06-22 SCX426 - Jun 22, 01:19 UTCJun 22, 04:15 UTC2h 55m
2026-06-21 SCX425 - Jun 21, 20:14 UTCJun 21, 23:40 UTC3h 25m
2026-06-21 SCX252 BOS → MSP Jun 21, 16:04 UTCJun 21, 18:54 UTC2h 50m
2026-06-21 SCX251 MSP → BOS Jun 21, 12:24 UTCJun 21, 14:40 UTC2h 15m
2026-06-21 SCX606 PHX → MSP Jun 21, 00:45 UTCJun 21, 03:25 UTC2h 40m
2026-06-20 SCX605 MSP → PHX Jun 20, 20:00 UTCJun 20, 23:04 UTC3h 5m
2026-06-20 SCX252 - Jun 20, 15:54 UTCJun 20, 17:59 UTC2h 5m
2026-06-20 SCX251 MSP → BOS Jun 20, 12:19 UTCJun 20, 14:29 UTC2h 10m

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 N903SY page for operator, model, and routing details .

Mode-S AC7BF8 frequently asked

What is Mode-S code AC7BF8?
AC7BF8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N903SY.
Where is Mode-S AC7BF8 registered?
Mode-S code AC7BF8 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 AC7BF8 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7BF8, octal 53075770, decimal 11,303,928.
What flights does AC7BF8 operate?
Mode-S AC7BF8 has broadcast 20 distinct callsigns, including SCX341, SCX342, SCX425, SCX426, SCX252.