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 3d ago
Flights observed
170
Distinct callsigns
20
Country
US
Last broadcast
3d 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
SCX430 - 3 2026-06-22
SCX429 - 3 2026-06-22
SCX395 Sun Country Airlines 3 2026-04-16
SCX1982 Sun Country Airlines 3 2026-06-02
SCX1812 Sun Country Airlines 3 2026-04-28
SCX1811 Sun Country Airlines 3 2026-04-28
SCX1701 - 3 2026-06-29
SCX941 Sun Country Airlines 2 2026-04-15
SCX8717 Sun Country Airlines 2 2026-04-19
SCX8176 Sun Country Airlines 2 2026-05-11
SCX8170 Sun Country Airlines 2 2026-06-01
SCX567 Sun Country Airlines 2 2026-04-13
SCX425 Sun Country Airlines 2 2026-05-07
SCX396 Sun Country Airlines 2 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 SCX234 EWR → MSP Jul 10, 15:50 UTCJul 10, 18:10 UTC2h 20m
2026-07-10 SCX233 MSP → EWR Jul 10, 12:20 UTCJul 10, 14:30 UTC2h 10m
2026-07-10 SCX296 PDX → MSP Jul 10, 03:40 UTCJul 10, 06:30 UTC2h 50m
2026-07-09 SCX295 MSP → PDX Jul 9, 21:10 UTCJul 10, 00:25 UTC3h 15m
2026-07-09 SCX1822 - Jul 9, 16:50 UTCJul 9, 19:20 UTC2h 30m
2026-07-09 SCX1821 - Jul 9, 13:05 UTCJul 9, 15:20 UTC2h 15m
2026-07-06 SCX472 ANC → MSP Jul 6, 21:40 UTCJul 7, 02:45 UTC5h 5m
2026-07-06 SCX471 MSP → ANC Jul 6, 14:45 UTCJul 6, 20:05 UTC5h 20m
2026-06-29 SCX1700 SLC → MSP Jun 29, 23:54 UTCJun 30, 01:50 UTC1h 56m
2026-06-29 SCX1701 MSP → SLC Jun 29, 19:39 UTCJun 29, 22:15 UTC2h 35m
2026-06-29 SCX1058 BUF → MSP Jun 29, 17:05 UTCJun 29, 18:14 UTC1h 10m
2026-06-29 SCX1058 BUF → MSP Jun 29, 16:29 UTCJun 29, 16:59 UTC30m
2026-06-29 SCX1057 MSP → BUF Jun 29, 13:44 UTCJun 29, 15:19 UTC1h 35m
2026-06-28 SCX392 SFO → MSP Jun 28, 16:35 UTCJun 28, 19:29 UTC2h 55m
2026-06-28 SCX391 MSP → SFO Jun 28, 11:09 UTCJun 28, 15:24 UTC4h 15m
2026-06-28 SCX286 - Jun 28, 01:44 UTCJun 28, 04:55 UTC3h 10m
2026-06-27 SCX285 MSP → SEA Jun 27, 21:19 UTCJun 28, 00:25 UTC3h 5m
2026-06-27 SCX668 IAD → MSP Jun 27, 17:29 UTCJun 27, 19:45 UTC2h 15m
2026-06-27 SCX667 MSP → IAD Jun 27, 14:20 UTCJun 27, 16:14 UTC1h 55m
2026-06-25 SCX1054 PIT → MSP Jun 25, 17:44 UTCJun 25, 19:39 UTC1h 55m
2026-06-25 SCX1053 MSP → PIT Jun 25, 14:44 UTCJun 25, 16:14 UTC1h 30m
2026-06-22 SCX1776 - Jun 22, 16:10 UTCJun 22, 18:35 UTC2h 25m
2026-06-22 SCX1775 - Jun 22, 12:44 UTCJun 22, 14:45 UTC2h 0m
2026-06-22 SCX430 - Jun 22, 07:49 UTCJun 22, 10:44 UTC2h 55m
2026-06-22 SCX429 MSP → LAX Jun 22, 03:05 UTCJun 22, 06:39 UTC3h 35m
2026-06-21 SCX8891 - Jun 21, 21:14 UTCJun 22, 00:20 UTC3h 5m
2026-06-21 SCX8889 - Jun 21, 18:10 UTCJun 21, 20:00 UTC1h 50m
2026-06-21 SCX8877 - Jun 21, 13:24 UTCJun 21, 16:34 UTC3h 10m
2026-06-19 SCX1038 GEG → MSP Jun 19, 02:19 UTCJun 19, 04:29 UTC2h 10m
2026-06-18 SCX1037 MSP → GEG Jun 18, 21:50 UTCJun 19, 01:04 UTC3h 14m
2026-06-18 SCX1948 CLT → MSP Jun 18, 18:05 UTCJun 18, 20:25 UTC2h 20m
2026-06-18 SCX1947 MSP → CLT Jun 18, 14:30 UTCJun 18, 16:35 UTC2h 5m
2026-06-17 SCX194 BWI → MSP Jun 17, 16:35 UTCJun 17, 19:00 UTC2h 25m
2026-06-17 SCX193 MSP → BWI Jun 17, 13:15 UTCJun 17, 15:10 UTC1h 55m
2026-06-16 SCX8663 - Jun 16, 21:35 UTCJun 16, 23:40 UTC2h 5m
2026-06-16 SCX8612 SCE → LAX Jun 16, 17:15 UTCJun 16, 18:50 UTC1h 35m
2026-06-16 SCX8661 SAV → CHA Jun 16, 14:15 UTCJun 16, 14:55 UTC40m
2026-06-15 SCX1702 SLC → MSP Jun 15, 23:39 UTCJun 16, 02:00 UTC2h 20m
2026-06-15 SCX1701 MSP → SLC Jun 15, 19:50 UTCJun 15, 22:15 UTC2h 25m
2026-06-15 SCX234 EWR → MSP Jun 15, 15:59 UTCJun 15, 18:25 UTC2h 25m
2026-06-15 SCX233 MSP → EWR Jun 15, 12:15 UTCJun 15, 14:20 UTC2h 5m
2026-06-14 SCX1814 VPS → MSP Jun 14, 23:59 UTCJun 15, 02:20 UTC2h 20m
2026-06-14 SCX1813 - Jun 14, 19:55 UTCJun 14, 22:00 UTC2h 5m
2026-06-14 SCX652 DEN → MSP Jun 14, 17:05 UTCJun 14, 18:35 UTC1h 30m
2026-06-14 SCX651 MSP → DEN Jun 14, 13:30 UTCJun 14, 15:10 UTC1h 40m
2026-06-13 SCX416 MIA → MSP Jun 13, 16:30 UTCJun 13, 19:55 UTC3h 25m
2026-06-13 SCX415 MSP → MIA Jun 13, 11:50 UTCJun 13, 14:50 UTC3h 0m
2026-06-13 SCX430 - Jun 13, 07:40 UTCJun 13, 10:35 UTC2h 55m
2026-06-13 SCX429 - Jun 13, 02:15 UTCJun 13, 05:50 UTC3h 34m
2026-06-12 SCX634 BNA → MSP Jun 12, 22:50 UTCJun 13, 00:30 UTC1h 40m

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 3d 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.