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
- Flights observed
- 217
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 5m ago
Current position
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 |
|---|---|---|---|
| SCX8701 | Sun Country Airlines | 9 | 2026-04-21 |
| SCX508 | - | 9 | 2026-06-26 |
| SCX507 | - | 9 | 2026-06-26 |
| SCX518 | Sun Country Airlines | 7 | 2026-05-31 |
| SCX517 | Sun Country Airlines | 7 | 2026-05-30 |
| SCX512 | - | 6 | 2026-06-28 |
| SCX511 | - | 6 | 2026-06-28 |
| SCX8751 | Sun Country Airlines | 5 | 2026-04-15 |
| SCX740 | - | 5 | 2026-06-25 |
| SCX510 | Sun Country Airlines | 4 | 2026-06-12 |
| SCX504 | - | 4 | 2026-06-28 |
| SCX9056 | - | 3 | 2026-06-15 |
| SCX8186 | Sun Country Airlines | 3 | 2026-06-15 |
| SCX514 | - | 3 | 2026-06-18 |
| SCX513 | - | 3 | 2026-06-18 |
| SCX509 | Sun Country Airlines | 3 | 2026-06-09 |
| SCX501 | Sun Country Airlines | 3 | 2026-06-22 |
| SCX1747 | - | 3 | 2026-07-02 |
| SCX106 | Sun Country Airlines | 3 | 2026-04-23 |
| SCX105 | Sun Country Airlines | 3 | 2026-04-23 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | SCX429 | - | Jul 14, 02:25 UTC | Jul 14, 04:15 UTC | 1h 50m |
| 2026-07-14 | SCX1926 | - | Jul 14, 00:00 UTC | Jul 14, 00:50 UTC | 50m |
| 2026-07-13 | SCX1925 | - | Jul 13, 21:40 UTC | Jul 13, 22:25 UTC | 45m |
| 2026-07-13 | SCX422 | - | Jul 13, 16:25 UTC | Jul 13, 19:40 UTC | 3h 15m |
| 2026-07-13 | SCX421 | - | Jul 13, 11:15 UTC | Jul 13, 14:20 UTC | 3h 5m |
| 2026-07-13 | SCX778 | LAS → MSP | Jul 13, 07:10 UTC | Jul 13, 09:55 UTC | 2h 45m |
| 2026-07-13 | SCX777 | MSP → LAS | Jul 13, 02:40 UTC | Jul 13, 05:25 UTC | 2h 45m |
| 2026-07-13 | SCX1914 | - | Jul 13, 00:20 UTC | Jul 13, 01:25 UTC | 1h 5m |
| 2026-07-12 | SCX1913 | MSP → GRR | Jul 12, 22:10 UTC | Jul 12, 23:10 UTC | 1h 0m |
| 2026-07-12 | SCX1046 | - | Jul 12, 18:10 UTC | Jul 12, 20:20 UTC | 2h 10m |
| 2026-07-12 | SCX1045 | - | Jul 12, 13:50 UTC | Jul 12, 15:50 UTC | 2h 0m |
| 2026-07-09 | SCX910 | - | Jul 9, 16:20 UTC | Jul 9, 18:45 UTC | 2h 25m |
| 2026-07-09 | SCX909 | - | Jul 9, 12:50 UTC | Jul 9, 14:55 UTC | 2h 5m |
| 2026-07-08 | SCX472 | - | Jul 8, 21:40 UTC | Jul 9, 02:45 UTC | 5h 5m |
| 2026-07-08 | SCX471 | MSP → ANC | Jul 8, 14:50 UTC | Jul 8, 20:10 UTC | 5h 20m |
| 2026-07-07 | SCX8934 | - | Jul 7, 14:45 UTC | Jul 7, 17:15 UTC | 2h 30m |
| 2026-07-06 | SCX8903 | BIF → DAY | Jul 6, 20:20 UTC | Jul 6, 22:55 UTC | 2h 35m |
| 2026-07-06 | SCX8903 | BIF → DAY | Jul 6, 18:25 UTC | Jul 6, 19:00 UTC | 35m |
| 2026-07-06 | SCX8932 | BDL → MSP | Jul 6, 14:40 UTC | Jul 6, 16:15 UTC | 1h 35m |
| 2026-07-05 | SCX920 | RDU → MSP | Jul 5, 23:35 UTC | Jul 6, 01:50 UTC | 2h 15m |
| 2026-07-05 | SCX919 | MSP → RDU | Jul 5, 19:55 UTC | Jul 5, 22:20 UTC | 2h 25m |
| 2026-07-05 | SCX1228 | - | Jul 5, 16:00 UTC | Jul 5, 18:40 UTC | 2h 40m |
| 2026-07-05 | SCX1227 | MSP → BDL | Jul 5, 12:45 UTC | Jul 5, 14:55 UTC | 2h 10m |
| 2026-07-03 | SCX384 | RSW → MSP | Jul 3, 16:30 UTC | Jul 3, 19:30 UTC | 3h 0m |
| 2026-07-03 | SCX383 | MSP → RSW | Jul 3, 11:40 UTC | Jul 3, 14:35 UTC | 2h 55m |
| 2026-07-03 | SCX1746 | - | Jul 3, 01:25 UTC | Jul 3, 02:45 UTC | 1h 20m |
| 2026-07-02 | SCX1748 | CUN → TUL | Jul 2, 20:50 UTC | Jul 2, 23:25 UTC | 2h 35m |
| 2026-07-02 | SCX1747 | - | Jul 2, 16:50 UTC | Jul 2, 19:20 UTC | 2h 30m |
| 2026-07-02 | SCX1745 | MSP → TUL | Jul 2, 13:35 UTC | Jul 2, 15:30 UTC | 1h 55m |
| 2026-06-29 | SCX1836 | - | Jun 29, 23:49 UTC | Jun 30, 02:00 UTC | 2h 11m |
| 2026-06-29 | SCX520 | - | Jun 29, 19:29 UTC | Jun 29, 21:39 UTC | 2h 10m |
| 2026-06-29 | SCX519 | - | Jun 29, 16:04 UTC | Jun 29, 18:10 UTC | 2h 5m |
| 2026-06-29 | SCX1835 | - | Jun 29, 12:09 UTC | Jun 29, 14:34 UTC | 2h 25m |
| 2026-06-29 | SCX1914 | PIE → MSP | Jun 29, 05:30 UTC | Jun 29, 06:40 UTC | 1h 10m |
| 2026-06-29 | SCX1913 | MSP → PIE | Jun 29, 03:05 UTC | Jun 29, 04:20 UTC | 1h 15m |
| 2026-06-28 | SCX504 | DFW → MSP | Jun 28, 23:54 UTC | Jun 29, 01:50 UTC | 1h 55m |
| 2026-06-28 | SCX512 | - | Jun 28, 18:59 UTC | Jun 28, 21:20 UTC | 2h 20m |
| 2026-06-28 | SCX511 | DFW → CUN | Jun 28, 15:20 UTC | Jun 28, 17:34 UTC | 2h 15m |
| 2026-06-27 | SCX905 | - | Jun 27, 16:44 UTC | Jun 27, 20:34 UTC | 3h 50m |
| 2026-06-26 | SCX905 | - | Jun 26, 22:19 UTC | Jun 27, 20:34 UTC | 22h 15m |
| 2026-06-26 | SCX739 | - | Jun 26, 20:24 UTC | Jun 27, 20:14 UTC | 23h 50m |
| 2026-06-26 | SCX508 | - | Jun 26, 15:10 UTC | Jun 26, 17:25 UTC | 2h 15m |
| 2026-06-26 | SCX507 | DFW → CUN | Jun 26, 11:24 UTC | Jun 26, 13:40 UTC | 2h 15m |
| 2026-06-25 | SCX740 | DFW → DFW | Jun 25, 13:40 UTC | Jun 26, 00:20 UTC | 10h 40m |
| 2026-06-24 | SCX740 | DFW → DFW | Jun 24, 13:30 UTC | Jun 24, 23:45 UTC | 10h 15m |
| 2026-06-23 | SCX512 | CUN → DFW | Jun 23, 18:25 UTC | Jun 23, 20:49 UTC | 2h 25m |
| 2026-06-23 | SCX511 | DFW → CUN | Jun 23, 14:35 UTC | Jun 23, 16:44 UTC | 2h 10m |
| 2026-06-22 | SCX516 | RSW → LAN | Jun 22, 21:30 UTC | Jun 22, 23:55 UTC | 2h 25m |
| 2026-06-22 | SCX515 | LAN → RSW | Jun 22, 18:00 UTC | Jun 22, 20:10 UTC | 2h 10m |
| 2026-06-22 | SCX501 | MSP → DFW | Jun 22, 13:49 UTC | Jun 22, 15:54 UTC | 2h 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 .