Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A2BAB6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N275SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A2BAB6
Octal
50535266
Decimal
10,664,630
Country
US
Tail
N275SY
Type
E75L
No current signal · last broadcast 16d ago
Flights observed
516
Distinct callsigns
20
Country
US
Last broadcast
16d ago

Last known position

Most recent position reported by Mode-S A2BAB6.

Country allocation

The ICAO 24-bit address A2BAB6 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
SKW4082 - 22 2026-07-14
SKW4033 - 20 2026-07-17
SKW3760 - 19 2026-07-16
SKW4111 - 18 2026-07-14
SKW4442 - 12 2026-07-09
SKW4097 - 12 2026-07-15
SKW3805 - 12 2026-07-15
SKW3717 SkyWest Airlines 12 2026-07-25
SKW3507 - 12 2026-07-11
SKW4025 SkyWest Airlines 11 2026-07-24
SKW3504 - 11 2026-07-16
SKW4107 - 10 2026-07-19
SKW4109 - 9 2026-07-18
SKW4102 SkyWest Airlines 9 2026-06-06
SKW3946 - 9 2026-07-17
SKW3939 - 9 2026-07-18
SKW3718 SkyWest Airlines 9 2026-07-25
SKW3505 - 9 2026-07-15
SKW4019 SkyWest Airlines 8 2026-05-23
SKW4011 - 8 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3842 MSP → RAP Jul 26, 20:20 UTCJul 26, 21:05 UTC45m
2026-07-26 SKW3778 MOT → MSP Jul 26, 00:10 UTCJul 26, 01:15 UTC1h 5m
2026-07-25 SKW3778 MOT → MSP Jul 25, 23:56 UTCJul 26, 01:10 UTC1h 14m
2026-07-25 SKW3717 ORD → BOS Jul 25, 21:25 UTCJul 25, 23:10 UTC1h 45m
2026-07-25 SKW3718 BNA → JFK Jul 25, 18:25 UTCJul 25, 19:45 UTC1h 20m
2026-07-25 SKW3718 BNA → JFK Jul 25, 18:24 UTCJul 25, 19:44 UTC1h 20m
2026-07-25 SKW3718 BNA → JFK Jul 25, 15:40 UTCJul 25, 17:15 UTC1h 35m
2026-07-25 SKW4138 FAT → SLC Jul 25, 13:25 UTCJul 25, 14:35 UTC1h 10m
2026-07-25 SKW3774 SLC → FAT Jul 25, 03:20 UTCJul 25, 04:30 UTC1h 10m
2026-07-25 SKW148E ATL → HPN Jul 25, 01:00 UTCJul 25, 02:00 UTC1h 0m
2026-07-24 SKW166C SEA → SJC Jul 24, 22:20 UTCJul 25, 01:30 UTC3h 10m
2026-07-24 SKW166C SEA → SJC Jul 24, 22:23 UTCJul 24, 23:29 UTC1h 6m
2026-07-24 SKW4134 OAK → SLC Jul 24, 19:45 UTCJul 24, 21:15 UTC1h 30m
2026-07-24 SKW4134 OAK → SLC Jul 24, 17:00 UTCJul 24, 18:35 UTC1h 35m
2026-07-24 SKW4022 YUL → DTW Jul 24, 15:20 UTCJul 24, 15:45 UTC25m
2026-07-24 SKW4025 ORD → BOS Jul 24, 03:25 UTCJul 24, 03:45 UTC20m
2026-07-24 SKW3690 BZN → SLC Jul 24, 02:00 UTCJul 24, 02:35 UTC35m
2026-07-23 SKW3689 MSP → OMA Jul 23, 19:50 UTCJul 23, 20:20 UTC30m
2026-07-23 SKW3689 MSP → OMA Jul 23, 19:40 UTCJul 23, 20:26 UTC46m
2026-07-23 SKW4470 DTW → GSO Jul 23, 17:50 UTCJul 23, 18:15 UTC25m
2026-07-23 SKW4470 DTW → GSO Jul 23, 15:50 UTCJul 23, 16:15 UTC25m
2026-07-23 SKW4022 YUL → DTW Jul 23, 14:15 UTCJul 23, 14:40 UTC25m
2026-07-23 SKW4025 ORD → BOS Jul 23, 02:10 UTCJul 23, 02:35 UTC25m
2026-07-23 SKW3690 BZN → SLC Jul 23, 00:50 UTCJul 23, 01:20 UTC30m
2026-07-22 SKW3689 MSP → OMA Jul 22, 19:45 UTCJul 22, 20:10 UTC25m
2026-07-22 SKW4470 DTW → GSO Jul 22, 18:05 UTCJul 22, 18:30 UTC25m
2026-07-22 SKW4470 DTW → GSO Jul 22, 15:50 UTCJul 22, 16:15 UTC25m
2026-07-22 SKW4037 SUN → SLC Jul 22, 13:30 UTCJul 22, 14:00 UTC30m
2026-07-22 SKW3985 CLE → BOS Jul 22, 03:45 UTCJul 22, 04:10 UTC25m
2026-07-22 SKW3903 SLC → OAK Jul 22, 00:15 UTCJul 22, 01:50 UTC1h 35m
2026-07-21 SKW3903 SLC → OAK Jul 21, 21:30 UTCJul 21, 23:10 UTC1h 40m
2026-07-21 SKW3880 HLN → SLC Jul 21, 19:15 UTCJul 21, 20:09 UTC54m
2026-07-21 SKW3880 - Jul 21, 17:05 UTCJul 21, 17:35 UTC30m
2026-07-21 SKW4022 YUL → DTW Jul 21, 14:40 UTCJul 21, 15:05 UTC25m
2026-07-21 SKW4025 - Jul 21, 00:40 UTCJul 21, 01:05 UTC25m
2026-07-20 SKW3690 BZN → SLC Jul 20, 21:30 UTCJul 20, 22:05 UTC35m
2026-07-20 SKW3689 MSP → OMA Jul 20, 19:40 UTCJul 20, 20:10 UTC30m
2026-07-20 SKW4470 DTW → GSO Jul 20, 17:45 UTCJul 20, 18:15 UTC30m
2026-07-20 SKW4470 DTW → GSO Jul 20, 17:49 UTCJul 20, 18:10 UTC21m
2026-07-20 SKW4470 DTW → GSO Jul 20, 15:55 UTCJul 20, 16:20 UTC25m
2026-07-20 SKW4069 BWI → BOS Jul 20, 12:55 UTCJul 20, 14:30 UTC1h 35m
2026-07-20 SKW3803 DTW → MSN Jul 20, 03:10 UTCJul 20, 04:45 UTC1h 35m
2026-07-20 SKW3737 - Jul 20, 00:20 UTCJul 20, 01:55 UTC1h 35m
2026-07-19 SKW3776 SJC → SEA Jul 19, 21:20 UTCJul 19, 22:35 UTC1h 15m
2026-07-19 SKW4133 - Jul 19, 18:40 UTCJul 19, 20:05 UTC1h 25m
2026-07-19 SKW4011 - Jul 19, 14:05 UTCJul 19, 16:40 UTC2h 35m
2026-07-19 SKW4107 - Jul 19, 10:30 UTCJul 19, 11:55 UTC1h 25m
2026-07-18 SKW4109 - Jul 18, 23:55 UTCJul 19, 01:15 UTC1h 20m
2026-07-18 SKW3723 BNA → BOS Jul 18, 19:05 UTCJul 18, 20:30 UTC1h 25m
2026-07-18 SKW3730 MSP → MSN Jul 18, 15:35 UTCJul 18, 17:05 UTC1h 30m

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 N275SY page for operator, model, and routing details .

Mode-S A2BAB6 frequently asked

What is Mode-S code A2BAB6?
A2BAB6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N275SY.
Where is Mode-S A2BAB6 registered?
Mode-S code A2BAB6 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 A2BAB6 broadcasting right now?
No active broadcast right now. Last signal was 16d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2BAB6, octal 50535266, decimal 10,664,630.
What flights does A2BAB6 operate?
Mode-S A2BAB6 has broadcast 20 distinct callsigns, including SKW4082, SKW4033, SKW3760, SKW4111, SKW4442.