Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A247F0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N246SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A247F0
Octal
50443760
Decimal
10,635,248
Country
US
Tail
N246SY
Type
E75L
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
628
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A247F0.

Country allocation

The ICAO 24-bit address A247F0 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
SKW3989 SkyWest Airlines 17 2026-05-31
SKW4164 SkyWest Airlines 13 2026-05-25
SKW4063 - 10 2026-06-18
SKW4035 - 10 2026-06-16
SKW3577 SkyWest Airlines 10 2026-06-26
SKW3899 - 9 2026-06-16
SKW3501 SkyWest Airlines 9 2026-06-04
SKW4121 - 8 2026-06-18
SKW4101 - 8 2026-07-03
SKW3971 SkyWest Airlines 8 2026-06-05
SKW3907 - 8 2026-06-18
SKW3699 - 8 2026-06-15
SKW3669 - 8 2026-07-02
SKW4088 - 7 2026-06-23
SKW4076 SkyWest Airlines 7 2026-06-01
SKW3815 - 7 2026-07-07
SKW3792 SkyWest Airlines 7 2026-04-19
SKW3778 SkyWest Airlines 7 2026-04-22
SKW3660 SkyWest Airlines 7 2026-05-30
SKW3637 SkyWest Airlines 7 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3822 MSP → GRB Jul 26, 21:40 UTCJul 26, 22:00 UTC20m
2026-07-26 SKW3951 LAX → PHX Jul 26, 19:30 UTCJul 26, 20:25 UTC55m
2026-07-26 SKW3951 LAX → PHX Jul 26, 17:20 UTCJul 26, 18:20 UTC1h 0m
2026-07-26 SKW3696 BWI → BOS Jul 26, 13:30 UTCJul 26, 15:55 UTC2h 25m
2026-07-26 SKW3576 LAX → GEG Jul 26, 04:40 UTCJul 26, 06:35 UTC1h 56m
2026-07-26 SKW3712 LAX → SMF Jul 26, 02:10 UTCJul 26, 03:20 UTC1h 10m
2026-07-25 SKW3712 LAX → SMF Jul 25, 23:55 UTCJul 26, 00:55 UTC1h 0m
2026-07-25 SKW3947 SLC → OAK Jul 25, 15:55 UTCJul 25, 22:25 UTC6h 30m
2026-07-25 SKW4057 EWR → BOS Jul 25, 13:10 UTCJul 25, 14:10 UTC1h 0m
2026-07-25 SKW3827 SHV → ATL Jul 25, 06:10 UTCJul 25, 07:10 UTC1h 0m
2026-07-25 SKW3827 SHV → ATL Jul 25, 05:55 UTCJul 25, 07:06 UTC1h 11m
2026-07-25 SKW4077 LAX → PHX Jul 25, 04:00 UTCJul 25, 04:55 UTC55m
2026-07-25 SKW4077 LAX → PHX Jul 25, 02:00 UTCJul 25, 03:05 UTC1h 5m
2026-07-24 SKW3902 DTW → ALB Jul 24, 22:30 UTCJul 24, 23:35 UTC1h 5m
2026-07-24 SKW3902 DTW → ALB Jul 24, 20:00 UTCJul 24, 20:55 UTC55m
2026-07-24 SKW4099 SJC → LAX Jul 24, 17:45 UTCJul 24, 18:55 UTC1h 10m
2026-07-24 SKW4099 SJC → LAX Jul 24, 17:50 UTCJul 24, 18:49 UTC59m
2026-07-24 SKW4099 SJC → LAX Jul 24, 15:40 UTCJul 24, 16:30 UTC50m
2026-07-24 SKW3743 SEA → SFO Jul 24, 13:45 UTCJul 24, 14:15 UTC30m
2026-07-24 SKW3746 LAX → SAN Jul 24, 06:10 UTCJul 24, 06:35 UTC25m
2026-07-24 SKW3883 MSP → MDW Jul 24, 04:00 UTCJul 24, 05:00 UTC1h 0m
2026-07-24 SKW3883 MSP → MDW Jul 24, 01:25 UTCJul 24, 02:10 UTC45m
2026-07-23 SKW3701 BOS → CLE Jul 23, 22:15 UTCJul 24, 00:20 UTC2h 5m
2026-07-23 SKW3959 MSP → BIS Jul 23, 20:00 UTCJul 23, 21:10 UTC1h 10m
2026-07-23 SKW3750 BOI → SEA Jul 23, 17:05 UTCJul 23, 18:10 UTC1h 5m
2026-07-23 SKW3750 BOI → SEA Jul 23, 14:25 UTCJul 23, 15:25 UTC1h 0m
2026-07-23 SKW4100 MDW → DTW Jul 23, 04:05 UTCJul 23, 05:45 UTC1h 40m
2026-07-23 SKW4100 MDW → DTW Jul 23, 01:00 UTCJul 23, 02:55 UTC1h 55m
2026-07-22 SKW3891 LAX → OAK Jul 22, 23:00 UTCJul 22, 23:35 UTC35m
2026-07-22 SKW3891 LAX → OAK Jul 22, 21:25 UTCJul 22, 21:55 UTC30m
2026-07-22 SKW3824 BMI → ATL Jul 22, 18:40 UTCJul 22, 19:30 UTC50m
2026-07-22 SKW3824 BMI → ATL Jul 22, 18:47 UTCJul 22, 19:19 UTC32m
2026-07-22 SKW3824 BMI → ATL Jul 22, 17:05 UTCJul 22, 17:45 UTC40m
2026-07-22 SKW3740 ORD → JFK Jul 22, 15:00 UTCJul 22, 16:00 UTC1h 0m
2026-07-22 SKW3740 ORD → JFK Jul 22, 14:58 UTCJul 22, 15:50 UTC52m
2026-07-22 SKW3692 SLC → OAK Jul 22, 02:55 UTCJul 22, 04:00 UTC1h 5m
2026-07-22 SKW127T MFR → SEA Jul 22, 00:40 UTCJul 22, 01:30 UTC50m
2026-07-21 SKW3770 HPN → ATL Jul 21, 22:25 UTCJul 21, 23:30 UTC1h 5m
2026-07-21 SKW3966 AUS → CVG Jul 21, 18:35 UTCJul 21, 20:45 UTC2h 10m
2026-07-21 SKW3966 AUS → CVG Jul 21, 14:50 UTCJul 21, 17:20 UTC2h 30m
2026-07-21 SKW4008 PDX → SEA Jul 21, 12:45 UTCJul 21, 13:15 UTC30m
2026-07-21 SKW4008 PDX → SEA Jul 21, 12:44 UTCJul 21, 13:11 UTC27m
2026-07-21 SKW4472 SEA → PDX Jul 21, 06:35 UTCJul 21, 07:10 UTC35m
2026-07-21 SKW4472 SEA → PDX Jul 21, 06:27 UTCJul 21, 07:01 UTC34m
2026-07-21 SKW3923 OAK → LAX Jul 21, 04:35 UTCJul 21, 05:00 UTC25m
2026-07-21 SKW3923 OAK → LAX Jul 21, 02:30 UTCJul 21, 03:05 UTC35m
2026-07-20 SKW4165 MSN → MSP Jul 20, 23:45 UTCJul 21, 00:35 UTC50m
2026-07-20 SKW4145 - Jul 20, 22:00 UTCJul 20, 22:40 UTC40m
2026-07-20 SKW3992 MSP → FSD Jul 20, 19:45 UTCJul 20, 20:20 UTC35m
2026-07-20 SKW3992 MSP → FSD Jul 20, 18:00 UTCJul 20, 18:35 UTC35m

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 N246SY page for operator, model, and routing details .

Mode-S A247F0 frequently asked

What is Mode-S code A247F0?
A247F0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N246SY.
Where is Mode-S A247F0 registered?
Mode-S code A247F0 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 A247F0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A247F0, octal 50443760, decimal 10,635,248.
What flights does A247F0 operate?
Mode-S A247F0 has broadcast 20 distinct callsigns, including SKW3989, SKW4164, SKW4063, SKW4035, SKW3577.