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sensors Mode-S transponder

AC64A6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N898SK · BOMBARDIER Regional Jet CRJ-900 · operated by SKYWEST AIRLINES INC

Hex
AC64A6
Octal
53062246
Decimal
11,297,958
Country
US
Tail
N898SK
Type
CRJ9
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
710
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S AC64A6.

Country allocation

The ICAO 24-bit address AC64A6 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
SKW4166 SkyWest Airlines 19 2026-07-24
SKW3941 - 15 2026-07-16
SKW3889 - 15 2026-07-19
SKW3752 SkyWest Airlines 15 2026-07-25
SKW4440 - 14 2026-07-16
SKW3869 SkyWest Airlines 13 2026-07-21
SKW3532 - 13 2026-07-11
SKW4059 SkyWest Airlines 12 2026-07-24
SKW3969 SkyWest Airlines 12 2026-06-01
SKW3671 - 12 2026-07-19
SKW3565 SkyWest Airlines 12 2026-06-28
SKW4021 - 11 2026-06-25
SKW3994 SkyWest Airlines 11 2026-05-19
SKW3926 SkyWest Airlines 11 2026-05-05
SKW3919 - 11 2026-06-25
SKW3879 - 11 2026-07-15
SKW3784 SkyWest Airlines 11 2026-06-03
SKW3500 - 11 2026-07-18
SKW4123 - 10 2026-07-17
SKW4055 SkyWest Airlines 10 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3762 MSP → MSN Jul 26, 19:30 UTCJul 26, 20:55 UTC1h 25m
2026-07-26 SKW3762 MSP → MSN Jul 26, 16:55 UTCJul 26, 18:30 UTC1h 35m
2026-07-26 SKW3739 LAX → OAK Jul 26, 14:40 UTCJul 26, 15:20 UTC40m
2026-07-26 SKW3739 LAX → OAK Jul 26, 13:25 UTCJul 26, 13:55 UTC30m
2026-07-26 SKW3858 DTW → OMA Jul 26, 10:15 UTCJul 26, 11:05 UTC50m
2026-07-26 SKW3949 LGA → BNA Jul 26, 01:55 UTCJul 26, 02:35 UTC40m
2026-07-26 SKW3949 LGA → BNA Jul 26, 01:59 UTCJul 26, 02:38 UTC39m
2026-07-25 SKW3787 SLC → OAK Jul 25, 22:00 UTCJul 25, 23:00 UTC1h 0m
2026-07-25 SKW3787 SLC → OAK Jul 25, 20:05 UTCJul 25, 21:00 UTC55m
2026-07-25 SKW3752 AUS → CVG Jul 25, 18:35 UTCJul 25, 19:00 UTC25m
2026-07-25 SKW3752 AUS → CVG Jul 25, 17:10 UTCJul 25, 17:25 UTC15m
2026-07-25 SKW3980 AZO → DTW Jul 25, 11:00 UTCJul 25, 11:30 UTC30m
2026-07-25 SKW3909 LAX → OAK Jul 25, 03:05 UTCJul 25, 03:30 UTC25m
2026-07-24 SKW4166 ATW → DTW Jul 24, 23:50 UTCJul 25, 00:35 UTC45m
2026-07-24 SKW4166 ATW → DTW Jul 24, 21:45 UTCJul 24, 22:40 UTC55m
2026-07-24 SKW3581 DTW → CLE Jul 24, 20:30 UTCJul 24, 20:55 UTC25m
2026-07-24 SKW3581 DTW → CLE Jul 24, 18:40 UTCJul 24, 19:05 UTC25m
2026-07-24 SKW4059 DTW → HPN Jul 24, 16:10 UTCJul 24, 16:55 UTC45m
2026-07-24 SKW4059 DTW → HPN Jul 24, 14:05 UTCJul 24, 15:00 UTC55m
2026-07-24 SKW3885 ATL → FWA Jul 24, 12:25 UTCJul 24, 12:55 UTC30m
2026-07-24 SKW4081 LAX → OAK Jul 24, 00:20 UTCJul 24, 00:45 UTC25m
2026-07-23 SKW3860 ATL → SBN Jul 23, 21:50 UTCJul 23, 22:50 UTC1h 0m
2026-07-23 SKW3860 ATL → SBN Jul 23, 19:55 UTCJul 23, 20:35 UTC40m
2026-07-23 SKW4609 MSN → YYZ Jul 23, 16:05 UTCJul 23, 17:45 UTC1h 40m
2026-07-21 SKW3651 YYZ → LGA Jul 21, 22:20 UTCJul 22, 00:30 UTC2h 10m
2026-07-21 SKW3869 DTW → MDW Jul 21, 18:00 UTCJul 21, 18:55 UTC55m
2026-07-21 SKW3869 DTW → MDW Jul 21, 15:35 UTCJul 21, 16:50 UTC1h 15m
2026-07-21 SKW3639 FWA → MSP Jul 21, 13:25 UTCJul 21, 14:15 UTC50m
2026-07-21 SKW3639 FWA → MSP Jul 21, 11:40 UTCJul 21, 12:20 UTC40m
2026-07-20 SKW3651 SAV → DTW Jul 20, 22:25 UTCJul 21, 00:10 UTC1h 45m
2026-07-20 SKW3651 - Jul 20, 19:25 UTCJul 20, 20:55 UTC1h 30m
2026-07-20 SKW3869 DTW → MDW Jul 20, 17:05 UTCJul 20, 17:55 UTC50m
2026-07-20 SKW3869 DTW → MDW Jul 20, 15:05 UTCJul 20, 15:50 UTC45m
2026-07-20 SKW3639 FWA → MSP Jul 20, 13:10 UTCJul 20, 13:50 UTC40m
2026-07-20 SKW3639 FWA → MSP Jul 20, 11:10 UTCJul 20, 11:55 UTC45m
2026-07-20 SKW4060 - Jul 20, 09:30 UTCJul 20, 09:45 UTC15m
2026-07-20 SKW3684 - Jul 20, 03:00 UTCJul 20, 03:15 UTC15m
2026-07-19 SKW3889 - Jul 19, 23:10 UTCJul 20, 00:40 UTC1h 30m
2026-07-19 SKW3889 - Jul 19, 20:15 UTCJul 19, 21:50 UTC1h 35m
2026-07-19 SKW3752 AUS → CVG Jul 19, 18:30 UTCJul 19, 18:50 UTC20m
2026-07-19 SKW3752 AUS → CVG Jul 19, 18:28 UTCJul 19, 18:50 UTC22m
2026-07-19 SKW3752 AUS → CVG Jul 19, 16:50 UTCJul 19, 17:10 UTC20m
2026-07-19 SKW3671 - Jul 19, 14:35 UTCJul 19, 15:30 UTC55m
2026-07-19 SKW3671 MSN → DTW Jul 19, 14:39 UTCJul 19, 15:27 UTC48m
2026-07-19 SKW3671 - Jul 19, 12:50 UTCJul 19, 13:45 UTC55m
2026-07-19 SKW3858 - Jul 19, 10:20 UTCJul 19, 11:15 UTC55m
2026-07-19 SKW3949 - Jul 19, 02:05 UTCJul 19, 02:50 UTC45m
2026-07-18 SKW4166 ATW → DTW Jul 18, 22:40 UTCJul 18, 23:25 UTC45m
2026-07-18 SKW4166 ATW → DTW Jul 18, 20:25 UTCJul 18, 21:20 UTC55m
2026-07-18 SKW3976 SDF → MSP Jul 18, 18:30 UTCJul 18, 19:00 UTC30m

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 N898SK page for operator, model, and routing details .

Mode-S AC64A6 frequently asked

What is Mode-S code AC64A6?
AC64A6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N898SK.
Where is Mode-S AC64A6 registered?
Mode-S code AC64A6 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 AC64A6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC64A6, octal 53062246, decimal 11,297,958.
What flights does AC64A6 operate?
Mode-S AC64A6 has broadcast 20 distinct callsigns, including SKW4166, SKW3941, SKW3889, SKW3752, SKW4440.