Apparatus

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sensors Mode-S transponder

AB503A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N828SY · BOEING 737-800 · operated by SUN COUNTRY INC

Hex
AB503A
Octal
52650072
Decimal
11,227,194
Country
US
Tail
N828SY
Type
B738
No current signal · last broadcast 22h ago
Flights observed
93
Distinct callsigns
20
Country
US
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S AB503A.

Country allocation

The ICAO 24-bit address AB503A 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
SCX618 Sun Country Airlines 7 2026-05-26
SCX617 Sun Country Airlines 7 2026-05-25
SCX8727 Sun Country Airlines 5 2026-04-26
SCX8177 Sun Country Airlines 3 2026-05-11
SCX8175 Sun Country Airlines 3 2026-05-11
SCX568 - 3 2026-04-13
SCX395 Sun Country Airlines 3 2026-04-16
SCX1812 Sun Country Airlines 3 2026-04-28
SCX1811 Sun Country Airlines 3 2026-04-28
SCX941 Sun Country Airlines 2 2026-04-15
SCX8717 Sun Country Airlines 2 2026-04-19
SCX8176 Sun Country Airlines 2 2026-05-11
SCX567 Sun Country Airlines 2 2026-04-13
SCX425 Sun Country Airlines 2 2026-05-07
SCX396 Sun Country Airlines 2 2026-04-17
SCX384 Sun Country Airlines 2 2026-05-10
SCX383 Sun Country Airlines 2 2026-05-10
SCX382 - 2 2026-04-16
SCX381 - 2 2026-04-16
SCX208 Sun Country Airlines 2 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SCX262 ORD → MSP May 29, 01:45 UTCMay 29, 02:45 UTC1h 0m
2026-05-28 SCX261 MSP → ORD May 28, 22:40 UTCMay 29, 00:00 UTC1h 20m
2026-05-28 SCX104 LAS → MSP May 28, 18:30 UTCMay 28, 21:10 UTC2h 40m
2026-05-28 SCX103 MSP → LAS May 28, 13:50 UTCMay 28, 16:40 UTC2h 50m
2026-05-26 SCX430 LAX → MSP May 26, 18:24 UTCMay 26, 21:29 UTC3h 5m
2026-05-26 SCX429 MSP → LAX May 26, 13:15 UTCMay 26, 16:45 UTC3h 30m
2026-05-26 SCX618 PSP → MSP May 26, 00:54 UTCMay 26, 03:55 UTC3h 0m
2026-05-25 SCX617 MSP → PSP May 25, 20:15 UTCMay 25, 23:19 UTC3h 5m
2026-05-25 SCX208 SAV → MSP May 25, 16:30 UTCMay 25, 19:05 UTC2h 35m
2026-05-25 SCX207 MSP → SAV May 25, 12:40 UTCMay 25, 15:05 UTC2h 25m
2026-05-24 SCX296 PDX → MSP May 24, 21:05 UTCMay 25, 04:35 UTC7h 30m
2026-05-24 SCX342 MCO → MSP May 24, 16:00 UTCMay 24, 18:50 UTC2h 50m
2026-05-24 SCX341 MSP → MCO May 24, 11:45 UTCMay 24, 14:35 UTC2h 50m
2026-05-20 SCX9061 DHN → MSP May 20, 18:05 UTCMay 20, 20:30 UTC2h 25m
2026-05-12 SCX9072 QRO → MSP May 12, 19:00 UTCMay 12, 21:10 UTC2h 10m
2026-05-12 SCX1982 RDU → MSP May 12, 13:15 UTCMay 12, 16:20 UTC3h 5m
2026-05-11 SCX8177 CAK → CMH May 11, 21:35 UTCMay 11, 21:55 UTC20m
2026-05-11 SCX8177 CAK → CMH May 11, 18:45 UTCMay 11, 20:45 UTC2h 0m
2026-05-11 SCX8176 ACY → PNS May 11, 15:10 UTCMay 11, 17:15 UTC2h 6m
2026-05-11 SCX8175 MCO → SRQ May 11, 13:25 UTCMay 11, 13:55 UTC30m
2026-05-10 SCX1983 MSP → LAX May 10, 22:25 UTCMay 11, 01:05 UTC2h 40m
2026-05-10 SCX384 RSW → MSP May 10, 16:34 UTCMay 10, 19:45 UTC3h 10m
2026-05-10 SCX383 MSP → RSW May 10, 12:05 UTCMay 10, 14:59 UTC2h 55m
2026-05-08 SCX384 RSW → MSP May 8, 15:55 UTCMay 8, 19:15 UTC3h 20m
2026-05-08 SCX383 MSP → RSW May 8, 11:19 UTCMay 8, 14:15 UTC2h 55m
2026-05-08 SCX426 LAX → MSP May 8, 01:35 UTCMay 8, 04:44 UTC3h 10m
2026-05-07 SCX425 MSP → LAX May 7, 20:55 UTCMay 8, 00:20 UTC3h 25m
2026-05-07 SCX425 MSP → LAX May 7, 20:40 UTCMay 7, 20:50 UTC10m
2026-05-04 SCX210 MYR → MSP May 4, 17:20 UTCMay 4, 19:55 UTC2h 36m
2026-05-04 SCX209 MSP → MYR May 4, 13:35 UTCMay 4, 15:40 UTC2h 5m
2026-05-04 SCX1492 CMH → MSP May 4, 00:25 UTCMay 4, 02:00 UTC1h 35m
2026-05-03 SCX1491 MSP → CMH May 3, 22:00 UTCMay 3, 23:20 UTC1h 20m
2026-05-03 SCX208 SAV → MSP May 3, 17:20 UTCMay 3, 19:55 UTC2h 35m
2026-05-03 SCX207 MSP → SAV May 3, 13:45 UTCMay 3, 16:00 UTC2h 15m
2026-05-02 SCX386 RSW → MSP May 2, 22:35 UTCMay 3, 01:55 UTC3h 20m
2026-05-02 SCX385 MSP → RSW May 2, 18:10 UTCMay 2, 21:30 UTC3h 20m
2026-05-02 SCX1982 RDU → MSP May 2, 14:05 UTCMay 2, 17:05 UTC3h 0m
2026-05-02 SCX8177 CAK → CMH May 2, 01:15 UTCMay 2, 02:25 UTC1h 10m
2026-05-01 SCX8176 ACY → PNS May 1, 21:10 UTCMay 2, 00:25 UTC3h 15m
2026-05-01 SCX8175 MCO → SRQ May 1, 17:50 UTCMay 1, 19:45 UTC1h 55m
2026-05-01 SCX8175 MCO → SRQ May 1, 16:25 UTCMay 1, 16:50 UTC25m
2026-04-30 SCX1645 MSP → MCO Apr 30, 22:50 UTCMay 1, 01:25 UTC2h 35m
2026-04-30 SCX424 LAX → MSP Apr 30, 18:15 UTCApr 30, 21:25 UTC3h 10m
2026-04-30 SCX423 MSP → LAX Apr 30, 13:25 UTCApr 30, 16:55 UTC3h 30m
2026-04-28 SCX1812 VPS → MSP Apr 28, 19:15 UTCApr 28, 21:40 UTC2h 25m
2026-04-28 SCX1811 MSP → VPS Apr 28, 15:25 UTCApr 28, 17:35 UTC2h 10m
2026-04-28 SCX618 PSP → MSP Apr 28, 02:00 UTCApr 28, 04:50 UTC2h 50m
2026-04-27 SCX617 MSP → PSP Apr 27, 21:35 UTCApr 28, 00:40 UTC3h 5m
2026-04-27 SCX326 JAX → MSP Apr 27, 16:40 UTCApr 27, 19:45 UTC3h 5m
2026-04-27 SCX325 MSP → JAX Apr 27, 12:55 UTCApr 27, 15:20 UTC2h 25m

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 N828SY page for operator, model, and routing details .

Mode-S AB503A frequently asked

What is Mode-S code AB503A?
AB503A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N828SY.
Where is Mode-S AB503A registered?
Mode-S code AB503A 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 AB503A broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB503A, octal 52650072, decimal 11,227,194.
What flights does AB503A operate?
Mode-S AB503A has broadcast 20 distinct callsigns, including SCX618, SCX617, SCX8727, SCX8177, SCX8175.