Apparatus

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sensors Mode-S transponder

AB8537

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N841SY · BOEING 737-800 · operated by SUN COUNTRY INC

Hex
AB8537
Octal
52702467
Decimal
11,240,759
Country
US
Tail
N841SY
Type
B738
No current signal · last broadcast 13h ago
Flights observed
243
Distinct callsigns
20
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S AB8537.

Country allocation

The ICAO 24-bit address AB8537 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
SCX568 - 6 2026-07-13
SCX567 - 6 2026-07-13
SCX8202 Sun Country Airlines 4 2026-05-20
SCX1914 - 4 2026-07-05
SCX1913 Sun Country Airlines 4 2026-07-05
SCX8774 Sun Country Airlines 3 2026-07-15
SCX8724 Sun Country Airlines 3 2026-07-15
SCX8714 Sun Country Airlines 3 2026-04-19
SCX8229 Sun Country Airlines 3 2026-05-25
SCX8228 Sun Country Airlines 3 2026-05-24
SCX8226 Sun Country Airlines 3 2026-05-22
SCX8224 Sun Country Airlines 3 2026-05-20
SCX8221 Sun Country Airlines 3 2026-05-26
SCX8220 Sun Country Airlines 3 2026-05-25
SCX8217 Sun Country Airlines 3 2026-05-18
SCX8213 Sun Country Airlines 3 2026-05-26
SCX8210 Sun Country Airlines 3 2026-05-25
SCX8208 Sun Country Airlines 3 2026-05-24
SCX8206 Sun Country Airlines 3 2026-05-22
SCX8204 Sun Country Airlines 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 SCX8460 LWB → MSP Jul 17, 13:15 UTCJul 17, 15:29 UTC2h 15m
2026-07-16 SCX8421 - Jul 16, 14:40 UTCJul 16, 18:34 UTC3h 55m
2026-07-15 SCX8470 STL → BGR Jul 15, 22:00 UTCJul 16, 00:30 UTC2h 30m
2026-07-15 SCX8724 MKC → PHL Jul 15, 19:25 UTCJul 15, 20:05 UTC40m
2026-07-15 SCX8774 SJC → SFO Jul 15, 16:20 UTCJul 15, 17:30 UTC1h 10m
2026-07-14 SCX234 - Jul 14, 15:55 UTCJul 14, 18:10 UTC2h 15m
2026-07-14 SCX233 MSP → EWR Jul 14, 12:20 UTCJul 14, 14:40 UTC2h 20m
2026-07-14 SCX396 SFO → MSP Jul 14, 01:35 UTCJul 14, 04:45 UTC3h 10m
2026-07-13 SCX395 MSP → SFO Jul 13, 20:15 UTCJul 13, 23:40 UTC3h 25m
2026-07-13 SCX568 JFK → MSP Jul 13, 16:30 UTCJul 13, 18:45 UTC2h 15m
2026-07-13 SCX567 MSP → JFK Jul 13, 12:40 UTCJul 13, 15:05 UTC2h 25m
2026-07-13 SCX1700 SLC → MSP Jul 13, 00:10 UTCJul 13, 02:20 UTC2h 10m
2026-07-12 SCX1701 MSP → SLC Jul 12, 20:10 UTCJul 12, 22:30 UTC2h 20m
2026-07-12 SCX568 - Jul 12, 16:25 UTCJul 12, 18:45 UTC2h 20m
2026-07-12 SCX567 MSP → JFK Jul 12, 12:25 UTCJul 12, 14:40 UTC2h 15m
2026-07-09 SCX8774 SJC → SFO Jul 9, 22:55 UTCJul 10, 00:00 UTC1h 5m
2026-07-09 SCX8724 MKC → PHL Jul 9, 20:40 UTCJul 9, 22:15 UTC1h 35m
2026-07-08 SCX8724 MKC → PHL Jul 8, 18:50 UTCJul 8, 20:25 UTC1h 35m
2026-07-08 SCX8774 SJC → SFO Jul 8, 16:00 UTCJul 8, 17:00 UTC1h 0m
2026-07-07 SCX1704 SLC → MSP Jul 7, 00:10 UTCJul 7, 02:10 UTC2h 0m
2026-07-06 SCX1703 MSP → SLC Jul 6, 20:30 UTCJul 6, 22:55 UTC2h 25m
2026-07-06 SCX214 TPA → MSP Jul 6, 15:50 UTCJul 6, 18:40 UTC2h 50m
2026-07-06 SCX213 MSP → TPA Jul 6, 11:40 UTCJul 6, 14:25 UTC2h 45m
2026-07-06 SCX290 SEA → MSP Jul 6, 07:30 UTCJul 6, 10:10 UTC2h 40m
2026-07-06 SCX289 MSP → SEA Jul 6, 03:10 UTCJul 6, 06:25 UTC3h 15m
2026-07-05 SCX1914 - Jul 5, 23:40 UTCJul 6, 00:40 UTC1h 0m
2026-07-05 SCX1913 MSP → PIE Jul 5, 21:15 UTCJul 5, 22:15 UTC1h 0m
2026-07-05 SCX348 - Jul 5, 00:15 UTCJul 5, 03:15 UTC3h 0m
2026-07-04 SCX347 MSP → MCO Jul 4, 19:45 UTCJul 4, 22:50 UTC3h 5m
2026-07-04 SCX901 JFK → MSP Jul 4, 17:10 UTCJul 4, 18:10 UTC1h 0m
2026-07-03 SCX261 MSP → ORD Jul 3, 23:05 UTCJul 4, 00:20 UTC1h 15m
2026-07-03 SCX422 - Jul 3, 16:25 UTCJul 3, 19:25 UTC3h 0m
2026-07-03 SCX421 - Jul 3, 11:30 UTCJul 3, 15:05 UTC3h 35m
2026-07-03 SCX474 ANC → MSP Jul 3, 04:50 UTCJul 3, 10:05 UTC5h 15m
2026-07-02 SCX473 MSP → ANC Jul 2, 22:20 UTCJul 3, 03:30 UTC5h 10m
2026-07-02 SCX104 LAS → MSP Jul 2, 18:00 UTCJul 2, 20:35 UTC2h 35m
2026-07-02 SCX103 MSP → LAS Jul 2, 13:45 UTCJul 2, 16:45 UTC3h 0m
2026-06-26 SCX326 JAX → MSP Jun 26, 17:44 UTCJun 26, 20:34 UTC2h 50m
2026-06-26 SCX325 MSP → JAX Jun 26, 13:30 UTCJun 26, 15:54 UTC2h 25m
2026-06-25 SCX682 HOU → MSP Jun 25, 23:55 UTCJun 26, 02:14 UTC2h 20m
2026-06-25 SCX681 MSP → HOU Jun 25, 20:05 UTCJun 25, 22:29 UTC2h 25m
2026-06-25 SCX568 JFK → MSP Jun 25, 16:14 UTCJun 25, 18:45 UTC2h 30m
2026-06-25 SCX567 MSP → JFK Jun 25, 12:35 UTCJun 25, 14:44 UTC2h 10m
2026-06-25 SCX398 - Jun 25, 07:54 UTCJun 25, 10:55 UTC3h 0m
2026-06-25 SCX397 MSP → SFO Jun 25, 01:59 UTCJun 25, 06:20 UTC4h 20m
2026-06-24 SCX1042 YVR → MSP Jun 24, 19:20 UTCJun 24, 22:10 UTC2h 50m
2026-06-24 SCX1041 MSP → YVR Jun 24, 14:24 UTCJun 24, 17:55 UTC3h 30m
2026-06-22 SCX1908 DTW → MSP Jun 22, 23:24 UTCJun 23, 00:50 UTC1h 25m
2026-06-22 SCX1907 MSP → DTW Jun 22, 20:49 UTCJun 22, 22:05 UTC1h 15m
2026-06-22 SCX342 MCO → MSP Jun 22, 15:54 UTCJun 22, 18:54 UTC3h 0m

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 N841SY page for operator, model, and routing details .

Mode-S AB8537 frequently asked

What is Mode-S code AB8537?
AB8537 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N841SY.
Where is Mode-S AB8537 registered?
Mode-S code AB8537 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 AB8537 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB8537, octal 52702467, decimal 11,240,759.
What flights does AB8537 operate?
Mode-S AB8537 has broadcast 20 distinct callsigns, including SCX568, SCX567, SCX8202, SCX1914, SCX1913.