Apparatus

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sensors Mode-S transponder

AB59F4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N830SK · BOMBARDIER Regional Jet CRJ-900 · operated by BANK OF UTAH TRUSTEE

Hex
AB59F4
Octal
52654764
Decimal
11,229,684
Country
US
Tail
N830SK
Type
CRJ9
No current signal · last broadcast 5h ago
Flights observed
684
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S AB59F4.

Country allocation

The ICAO 24-bit address AB59F4 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
SKW3752 - 19 2026-07-06
SKW3889 - 17 2026-06-24
SKW3500 - 17 2026-06-29
SKW3821 - 15 2026-07-07
SKW3762 - 14 2026-06-29
SKW4176 - 13 2026-07-13
SKW4034 - 12 2026-07-12
SKW3969 SkyWest Airlines 12 2026-06-04
SKW3826 - 12 2026-07-10
SKW3879 - 11 2026-06-16
SKW4166 - 10 2026-07-03
SKW3957 SkyWest Airlines 10 2026-05-20
SKW3878 SkyWest Airlines 10 2026-06-03
SKW3869 - 10 2026-07-09
SKW3675 - 10 2026-07-09
SKW4440 SkyWest Airlines 9 2026-06-07
SKW4026 SkyWest Airlines 9 2026-05-24
SKW3988 - 9 2026-07-10
SKW3860 - 9 2026-07-13
SKW3685 - 9 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW3900 - Jul 14, 00:05 UTCJul 14, 00:30 UTC25m
2026-07-13 SKW3860 - Jul 13, 22:15 UTCJul 13, 23:00 UTC45m
2026-07-13 SKW3860 - Jul 13, 19:55 UTCJul 13, 20:40 UTC45m
2026-07-13 SKW3961 - Jul 13, 16:50 UTCJul 13, 18:15 UTC1h 25m
2026-07-13 SKW3961 - Jul 13, 14:15 UTCJul 13, 15:40 UTC1h 25m
2026-07-13 SKW4176 - Jul 13, 12:00 UTCJul 13, 12:50 UTC50m
2026-07-13 SKW4176 ATW → DTW Jul 13, 12:15 UTCJul 13, 12:43 UTC28m
2026-07-13 SKW4159 - Jul 13, 01:25 UTCJul 13, 02:10 UTC45m
2026-07-12 SKW3782 - Jul 12, 23:20 UTCJul 13, 00:01 UTC40m
2026-07-12 SKW3782 - Jul 12, 21:35 UTCJul 12, 22:15 UTC40m
2026-07-12 SKW4034 - Jul 12, 19:30 UTCJul 12, 20:05 UTC35m
2026-07-12 SKW4034 - Jul 12, 17:40 UTCJul 12, 18:10 UTC30m
2026-07-12 SKW3986 - Jul 12, 15:55 UTCJul 12, 16:20 UTC25m
2026-07-12 SKW3986 - Jul 12, 14:15 UTCJul 12, 14:40 UTC25m
2026-07-12 SKW3977 - Jul 12, 11:45 UTCJul 12, 12:40 UTC55m
2026-07-12 SKW3977 LEX → DTW Jul 12, 11:50 UTCJul 12, 12:29 UTC39m
2026-07-11 SKW4013 - Jul 11, 01:05 UTCJul 11, 01:50 UTC45m
2026-07-10 SKW3671 - Jul 10, 23:30 UTCJul 11, 00:15 UTC45m
2026-07-10 SKW3671 DTW → MSN Jul 10, 21:55 UTCJul 10, 22:55 UTC1h 0m
2026-07-10 SKW3826 IAD → DTW Jul 10, 19:20 UTCJul 10, 20:30 UTC1h 10m
2026-07-10 SKW3988 - Jul 10, 02:05 UTCJul 10, 03:05 UTC1h 0m
2026-07-09 SKW3651 - Jul 9, 22:45 UTCJul 10, 00:25 UTC1h 40m
2026-07-09 SKW3651 - Jul 9, 19:55 UTCJul 9, 21:35 UTC1h 40m
2026-07-09 SKW3869 - Jul 9, 17:05 UTCJul 9, 17:55 UTC50m
2026-07-09 SKW3869 ELM → DTW Jul 9, 17:07 UTCJul 9, 17:54 UTC47m
2026-07-09 SKW3869 - Jul 9, 15:20 UTCJul 9, 16:05 UTC45m
2026-07-09 SKW3639 - Jul 9, 13:20 UTCJul 9, 14:05 UTC45m
2026-07-09 SKW3639 - Jul 9, 11:20 UTCJul 9, 12:05 UTC45m
2026-07-09 SKW3675 - Jul 9, 01:25 UTCJul 9, 02:10 UTC45m
2026-07-08 SKW3675 - Jul 8, 23:50 UTCJul 9, 00:30 UTC40m
2026-07-08 SKW3860 - Jul 8, 22:00 UTCJul 8, 22:50 UTC50m
2026-07-08 SKW3860 - Jul 8, 20:00 UTCJul 8, 20:45 UTC45m
2026-07-08 SKW3961 - Jul 8, 16:55 UTCJul 8, 18:20 UTC1h 25m
2026-07-08 SKW3961 PVD → DTW Jul 8, 16:54 UTCJul 8, 18:17 UTC1h 23m
2026-07-08 SKW3961 - Jul 8, 14:15 UTCJul 8, 15:40 UTC1h 25m
2026-07-08 SKW4176 - Jul 8, 12:15 UTCJul 8, 13:00 UTC45m
2026-07-08 SKW4176 ATW → DTW Jul 8, 12:17 UTCJul 8, 12:55 UTC38m
2026-07-08 SKW4159 - Jul 8, 01:30 UTCJul 8, 02:15 UTC45m
2026-07-07 SKW4007 - Jul 7, 23:10 UTCJul 8, 00:35 UTC1h 25m
2026-07-07 SKW4007 - Jul 7, 20:35 UTCJul 7, 22:05 UTC1h 30m
2026-07-07 SKW3559 - Jul 7, 18:50 UTCJul 7, 19:15 UTC25m
2026-07-07 SKW3559 - Jul 7, 17:00 UTCJul 7, 17:20 UTC20m
2026-07-07 SKW3821 - Jul 7, 14:50 UTCJul 7, 15:40 UTC50m
2026-07-07 SKW3821 - Jul 7, 12:35 UTCJul 7, 13:30 UTC55m
2026-07-07 SKW3858 - Jul 7, 10:20 UTCJul 7, 11:15 UTC55m
2026-07-07 SKW3949 - Jul 7, 02:55 UTCJul 7, 03:35 UTC40m
2026-07-07 SKW3598 LAX → SJC Jul 7, 01:30 UTCJul 7, 02:05 UTC35m
2026-07-06 SKW3598 LAX → SJC Jul 6, 23:55 UTCJul 7, 00:35 UTC40m
2026-07-06 SKW3581 DTW → CLE Jul 6, 22:25 UTCJul 6, 22:50 UTC25m
2026-07-06 SKW3581 DTW → CLE Jul 6, 20:40 UTCJul 6, 21:00 UTC20m

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 N830SK page for operator, model, and routing details .

Mode-S AB59F4 frequently asked

What is Mode-S code AB59F4?
AB59F4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N830SK.
Where is Mode-S AB59F4 registered?
Mode-S code AB59F4 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 AB59F4 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB59F4, octal 52654764, decimal 11,229,684.
What flights does AB59F4 operate?
Mode-S AB59F4 has broadcast 20 distinct callsigns, including SKW3752, SKW3889, SKW3500, SKW3821, SKW3762.