Apparatus

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sensors Mode-S transponder

A9615A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N703SY · EMBRAER ERJ-170-100

Hex
A9615A
Octal
52260532
Decimal
11,100,506
Country
US
Tail
N703SY
Type
E170
No current signal · last broadcast 38m ago
Flights observed
214
Distinct callsigns
20
Country
US
Last broadcast
38m ago

Last known position

Most recent position reported by Mode-S A9615A.

Country allocation

The ICAO 24-bit address A9615A 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
SKW5291 SkyWest Airlines 15 2026-06-10
SKW4793 SkyWest Airlines 14 2026-06-10
SKW5989 SkyWest Airlines 9 2026-05-29
SKW5950 SkyWest Airlines 8 2026-05-16
SKW5551 SkyWest Airlines 8 2026-05-16
SKW5240 SkyWest Airlines 8 2026-05-17
SKW4800 SkyWest Airlines 8 2026-05-17
SKW5421 SkyWest Airlines 7 2026-05-30
SKW5845 SkyWest Airlines 6 2026-06-05
SKW5374 SkyWest Airlines 6 2026-05-19
SKW5281 SkyWest Airlines 6 2026-06-06
SKW4790 SkyWest Airlines 6 2026-06-06
SKW4717 SkyWest Airlines 6 2026-06-05
SKW5929 SkyWest Airlines 5 2026-05-17
SKW5822 SkyWest Airlines 5 2026-05-17
SKW5793 SkyWest Airlines 5 2026-05-19
SKW5306 SkyWest Airlines 5 2026-06-09
SKW5884 SkyWest Airlines 4 2026-06-09
SKW5378 SkyWest Airlines 4 2026-06-08
SKW4709 SkyWest Airlines 4 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-10 SKW5291 DEN → MSP Jun 10, 12:05 UTCJun 10, 12:30 UTC25m
2026-06-10 SKW4793 LAX → RDD Jun 10, 01:45 UTCJun 10, 02:05 UTC20m
2026-06-10 SKW4793 LAX → RDD Jun 10, 01:44 UTCJun 10, 02:03 UTC19m
2026-06-09 SKW4658 ASE → SFO Jun 9, 22:00 UTCJun 9, 22:40 UTC40m
2026-06-09 SKW4658 ASE → SFO Jun 9, 21:34 UTCJun 9, 22:43 UTC1h 9m
2026-06-09 SKW6083 IAH → GJT Jun 9, 20:30 UTCJun 9, 20:45 UTC15m
2026-06-09 SKW5306 SFO → ACV Jun 9, 19:20 UTCJun 9, 19:30 UTC10m
2026-06-09 SKW5884 DEN → FAT Jun 9, 16:45 UTCJun 9, 17:30 UTC45m
2026-06-09 SKW5884 DEN → FAT Jun 9, 15:35 UTCJun 9, 15:50 UTC15m
2026-06-09 SKW5303 ONT → SFO Jun 9, 02:30 UTCJun 9, 03:00 UTC30m
2026-06-09 SKW5848 FSD → DEN Jun 9, 00:00 UTCJun 9, 01:35 UTC1h 35m
2026-06-08 SKW5848 FSD → DEN Jun 8, 23:41 UTCJun 9, 01:32 UTC1h 51m
2026-06-08 SKW5378 DEN → FSD Jun 8, 20:15 UTCJun 8, 21:25 UTC1h 10m
2026-06-08 SKW5378 DEN → FSD Jun 8, 20:08 UTCJun 8, 21:21 UTC1h 13m
2026-06-08 SKW5903 SUN → SFO Jun 8, 16:35 UTCJun 8, 18:10 UTC1h 35m
2026-06-08 SKW5260 SFO → SNA Jun 8, 13:55 UTCJun 8, 15:20 UTC1h 25m
2026-06-08 SKW4641 ORD → FNT Jun 8, 11:30 UTCJun 8, 12:05 UTC35m
2026-06-08 SKW476G DEN → LBL Jun 8, 03:15 UTCJun 8, 03:40 UTC25m
2026-06-08 SKW5671 ORD → ROA Jun 8, 00:20 UTCJun 8, 01:05 UTC45m
2026-06-07 SKW5265 RDM → SFO Jun 7, 22:06 UTCJun 7, 22:42 UTC36m
2026-06-07 SKW5265 RDM → SFO Jun 7, 22:00 UTCJun 7, 22:30 UTC30m
2026-06-07 SKW4658 ASE → SFO Jun 7, 19:45 UTCJun 7, 20:35 UTC50m
2026-06-07 SKW485U DEN → CPR Jun 7, 17:45 UTCJun 7, 18:30 UTC45m
2026-06-07 SKW5884 DEN → FAT Jun 7, 15:40 UTCJun 7, 16:20 UTC40m
2026-06-07 SKW5303 ONT → SFO Jun 7, 03:25 UTCJun 7, 04:05 UTC40m
2026-06-06 SKW5404 SGF → ORD Jun 6, 23:30 UTCJun 7, 01:00 UTC1h 30m
2026-06-06 SKW4693 LAX → RDM Jun 6, 19:44 UTCJun 6, 21:09 UTC1h 25m
2026-06-06 SKW5281 TUS → SFO Jun 6, 16:45 UTCJun 6, 17:34 UTC50m
2026-06-06 SKW4790 DEN → BIL Jun 6, 14:30 UTCJun 6, 14:59 UTC30m
2026-06-06 SKW5291 DEN → MSP Jun 6, 12:24 UTCJun 6, 12:45 UTC20m
2026-06-06 SKW4793 LAX → RDD Jun 6, 01:35 UTCJun 6, 01:55 UTC20m
2026-06-05 SKW4717 ABQ → SFO Jun 5, 23:10 UTCJun 5, 23:40 UTC30m
2026-06-05 SKW4717 ABQ → SFO Jun 5, 22:20 UTCJun 5, 22:30 UTC10m
2026-06-05 SKW5845 DCA → ORD Jun 5, 20:05 UTCJun 5, 21:10 UTC1h 5m
2026-06-05 SKW5845 DCA → ORD Jun 5, 20:05 UTCJun 5, 21:09 UTC1h 4m
2026-06-05 SKW5898 SGF → DEN Jun 5, 14:45 UTCJun 5, 16:25 UTC1h 40m
2026-06-05 SKW5886 DEN → SGF Jun 5, 00:51 UTCJun 5, 03:11 UTC2h 20m
2026-06-05 SKW5886 DEN → SGF Jun 5, 01:50 UTCJun 5, 02:30 UTC40m
2026-06-04 SKW4717 ABQ → SFO Jun 4, 22:20 UTCJun 4, 23:30 UTC1h 10m
2026-06-04 SKW5845 DCA → ORD Jun 4, 20:05 UTCJun 4, 21:10 UTC1h 5m
2026-06-04 SKW5281 TUS → SFO Jun 4, 16:50 UTCJun 4, 17:30 UTC40m
2026-06-04 SKW5281 TUS → SFO Jun 4, 16:43 UTCJun 4, 17:27 UTC44m
2026-06-04 SKW4790 DEN → BIL Jun 4, 14:30 UTCJun 4, 15:23 UTC53m
2026-06-04 SKW4790 DEN → BIL Jun 4, 14:40 UTCJun 4, 15:15 UTC35m
2026-06-04 SKW5291 DEN → MSP Jun 4, 12:30 UTCJun 4, 12:55 UTC25m
2026-06-02 SKW5205 SLC → SFO Jun 2, 17:40 UTCJun 2, 19:10 UTC1h 30m
2026-05-31 SKW5378 DEN → FSD May 31, 20:00 UTCMay 31, 21:15 UTC1h 15m
2026-05-31 SKW4675 SFO → PSP May 31, 17:45 UTCMay 31, 18:10 UTC25m
2026-05-31 SKW5306 SFO → ACV May 31, 16:06 UTCMay 31, 16:24 UTC18m
2026-05-31 SKW5306 SFO → ACV May 31, 16:05 UTCMay 31, 16:30 UTC25m

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 N703SY page for operator, model, and routing details .

Mode-S A9615A frequently asked

What is Mode-S code A9615A?
A9615A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N703SY.
Where is Mode-S A9615A registered?
Mode-S code A9615A 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 A9615A broadcasting right now?
No active broadcast right now. Last signal was 38m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9615A, octal 52260532, decimal 11,100,506.
What flights does A9615A operate?
Mode-S A9615A has broadcast 20 distinct callsigns, including SKW5291, SKW4793, SKW5989, SKW5950, SKW5551.