Apparatus

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sensors Mode-S transponder

ABBF49

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N856SY · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
ABBF49
Octal
52737511
Decimal
11,255,625
Country
US
Tail
N856SY
Type
B738
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
262
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S ABBF49.

Country allocation

The ICAO 24-bit address ABBF49 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
SCX508 Sun Country Airlines 11 2026-07-26
SCX507 Sun Country Airlines 10 2026-07-26
SCX8701 Sun Country Airlines 9 2026-04-21
SCX517 Sun Country Airlines 8 2026-07-26
SCX518 Sun Country Airlines 7 2026-05-31
SCX512 - 6 2026-06-28
SCX511 - 6 2026-06-28
SCX510 Sun Country Airlines 6 2026-07-21
SCX509 Sun Country Airlines 6 2026-07-25
SCX504 Sun Country Airlines 6 2026-07-21
SCX8751 Sun Country Airlines 5 2026-04-15
SCX740 - 5 2026-06-25
SCX501 Sun Country Airlines 5 2026-07-20
SCX513 - 4 2026-07-19
SCX9056 - 3 2026-06-15
SCX8186 Sun Country Airlines 3 2026-06-15
SCX520 - 3 2026-07-19
SCX516 Sun Country Airlines 3 2026-07-25
SCX514 - 3 2026-06-18
SCX1836 - 3 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SCX517 DFW → CUN Jul 26, 19:30 UTCJul 26, 21:45 UTC2h 15m
2026-07-26 SCX508 CUN → DFW Jul 26, 16:50 UTCJul 26, 17:10 UTC20m
2026-07-26 SCX508 CUN → DFW Jul 26, 14:55 UTCJul 26, 16:45 UTC1h 50m
2026-07-26 SCX507 DFW → CUN Jul 26, 11:25 UTCJul 26, 13:45 UTC2h 20m
2026-07-25 SCX516 RSW → LAN Jul 25, 22:05 UTCJul 26, 00:30 UTC2h 25m
2026-07-25 SCX557 LAN → MCO Jul 25, 19:00 UTCJul 25, 20:45 UTC1h 45m
2026-07-25 SCX558 MCO → LAN Jul 25, 17:10 UTCJul 25, 17:30 UTC20m
2026-07-25 SCX558 MCO → LAN Jul 25, 15:50 UTCJul 25, 16:15 UTC25m
2026-07-25 SCX509 DFW → CUN Jul 25, 12:10 UTCJul 25, 14:30 UTC2h 20m
2026-07-24 SCX503 MSP → DFW Jul 24, 22:35 UTCJul 25, 00:30 UTC1h 55m
2026-07-24 SCX326 JAX → MSP Jul 24, 17:25 UTCJul 24, 20:15 UTC2h 50m
2026-07-24 SCX325 MSP → JAX Jul 24, 13:30 UTCJul 24, 15:50 UTC2h 20m
2026-07-23 SCX910 ILM → MSP Jul 23, 17:10 UTCJul 23, 19:55 UTC2h 45m
2026-07-23 SCX909 MSP → ILM Jul 23, 13:25 UTCJul 23, 15:20 UTC1h 55m
2026-07-23 SCX1700 SLC → MSP Jul 23, 00:35 UTCJul 23, 02:35 UTC2h 0m
2026-07-22 SCX1701 MSP → SLC Jul 22, 20:35 UTCJul 22, 22:55 UTC2h 20m
2026-07-22 SCX282 SEA → MSP Jul 22, 16:10 UTCJul 22, 18:55 UTC2h 45m
2026-07-22 SCX281 MSP → SEA Jul 22, 11:10 UTCJul 22, 14:25 UTC3h 15m
2026-07-21 SCX504 DFW → MSP Jul 21, 21:15 UTCJul 21, 23:10 UTC1h 55m
2026-07-21 SCX510 CUN → DFW Jul 21, 15:55 UTCJul 21, 18:20 UTC2h 25m
2026-07-21 SCX509 DFW → CUN Jul 21, 12:15 UTCJul 21, 14:30 UTC2h 15m
2026-07-20 SCX516 RSW → LAN Jul 20, 21:10 UTCJul 20, 23:25 UTC2h 15m
2026-07-20 SCX515 LAN → RSW Jul 20, 17:30 UTCJul 20, 19:45 UTC2h 15m
2026-07-20 SCX501 MSP → DFW Jul 20, 14:00 UTCJul 20, 15:55 UTC1h 55m
2026-07-19 SCX1836 - Jul 19, 23:40 UTCJul 20, 02:05 UTC2h 25m
2026-07-19 SCX520 CUN → SAT Jul 19, 19:35 UTCJul 19, 21:50 UTC2h 15m
2026-07-19 SCX513 - Jul 19, 15:40 UTCJul 19, 18:10 UTC2h 30m
2026-07-19 SCX501 MSP → DFW Jul 19, 11:40 UTCJul 19, 13:30 UTC1h 50m
2026-07-19 SCX474 - Jul 19, 05:10 UTCJul 19, 10:05 UTC4h 55m
2026-07-18 SCX473 MSP → ANC Jul 18, 22:15 UTCJul 19, 03:45 UTC5h 30m
2026-07-18 SCX1822 - Jul 18, 17:20 UTCJul 18, 20:00 UTC2h 40m
2026-07-18 SCX1821 - Jul 18, 13:45 UTCJul 18, 15:55 UTC2h 10m
2026-07-17 SCX504 DFW → MSP Jul 17, 21:25 UTCJul 17, 23:14 UTC1h 50m
2026-07-17 SCX510 CUN → DFW Jul 17, 16:15 UTCJul 17, 18:40 UTC2h 25m
2026-07-17 SCX509 DFW → CUN Jul 17, 12:25 UTCJul 17, 14:39 UTC2h 15m
2026-07-17 SCX505 MSP → DFW Jul 17, 01:35 UTCJul 17, 03:34 UTC2h 0m
2026-07-16 SCX920 RDU → MSP Jul 16, 21:45 UTCJul 17, 00:10 UTC2h 25m
2026-07-16 SCX919 MSP → RDU Jul 16, 18:25 UTCJul 16, 20:35 UTC2h 10m
2026-07-16 SCX1058 BUF → MSP Jul 16, 14:55 UTCJul 16, 16:49 UTC1h 55m
2026-07-16 SCX1057 MSP → BUF Jul 16, 12:05 UTCJul 16, 13:40 UTC1h 35m
2026-07-15 SCX472 ANC → MSP Jul 15, 21:25 UTCJul 16, 02:20 UTC4h 55m
2026-07-15 SCX471 MSP → ANC Jul 15, 14:45 UTCJul 15, 20:10 UTC5h 25m
2026-07-14 SCX342 MCO → MSP Jul 14, 17:15 UTCJul 14, 20:00 UTC2h 45m
2026-07-14 SCX341 MSP → MCO Jul 14, 12:25 UTCJul 14, 15:15 UTC2h 50m
2026-07-14 SCX430 - Jul 14, 07:15 UTCJul 14, 10:25 UTC3h 10m
2026-07-14 SCX429 MSP → LAX Jul 14, 02:25 UTCJul 14, 05:35 UTC3h 10m
2026-07-14 SCX1926 - Jul 14, 00:00 UTCJul 14, 00:50 UTC50m
2026-07-13 SCX1925 - Jul 13, 21:40 UTCJul 13, 22:25 UTC45m
2026-07-13 SCX422 - Jul 13, 16:25 UTCJul 13, 19:40 UTC3h 15m
2026-07-13 SCX421 - Jul 13, 11:15 UTCJul 13, 14:20 UTC3h 5m

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 N856SY page for operator, model, and routing details .

Mode-S ABBF49 frequently asked

What is Mode-S code ABBF49?
ABBF49 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N856SY.
Where is Mode-S ABBF49 registered?
Mode-S code ABBF49 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 ABBF49 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABBF49, octal 52737511, decimal 11,255,625.
What flights does ABBF49 operate?
Mode-S ABBF49 has broadcast 20 distinct callsigns, including SCX508, SCX507, SCX8701, SCX517, SCX518.