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 1h ago
Flights observed
502
Distinct callsigns
20
Country
US
Last broadcast
1h 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 31 2026-07-24
SKW4793 SkyWest Airlines 29 2026-07-24
SKW5378 SkyWest Airlines 25 2026-07-25
SKW5848 SkyWest Airlines 20 2026-07-25
SKW5989 - 16 2026-07-19
SKW5421 SkyWest Airlines 15 2026-07-19
SKW5281 - 15 2026-06-20
SKW5306 SkyWest Airlines 14 2026-07-23
SKW5884 - 13 2026-07-16
SKW5791 SkyWest Airlines 13 2026-07-23
SKW5374 SkyWest Airlines 13 2026-07-19
SKW4790 - 13 2026-06-20
SKW4675 SkyWest Airlines 13 2026-07-23
SKW5793 SkyWest Airlines 12 2026-07-19
SKW5845 SkyWest Airlines 10 2026-06-18
SKW4717 - 10 2026-06-18
SKW4658 - 10 2026-07-16
SKW5950 SkyWest Airlines 8 2026-05-16
SKW5903 SkyWest Airlines 8 2026-07-24
SKW5551 SkyWest Airlines 8 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5802 MSN → ORD Jul 26, 01:50 UTCJul 26, 02:30 UTC40m
2026-07-25 SKW5848 FSD → DEN Jul 25, 23:10 UTCJul 26, 00:25 UTC1h 15m
2026-07-25 SKW5378 DEN → FSD Jul 25, 19:55 UTCJul 25, 21:00 UTC1h 5m
2026-07-25 SKW5378 DEN → FSD Jul 25, 20:00 UTCJul 25, 20:57 UTC57m
2026-07-25 SKW4736 DTW → ORD Jul 25, 15:30 UTCJul 25, 16:10 UTC40m
2026-07-25 SKW5802 MSN → ORD Jul 25, 01:55 UTCJul 25, 02:35 UTC40m
2026-07-24 SKW5848 FSD → DEN Jul 24, 22:15 UTCJul 24, 23:30 UTC1h 15m
2026-07-24 SKW5378 DEN → FSD Jul 24, 19:55 UTCJul 24, 21:10 UTC1h 15m
2026-07-24 SKW5903 SUN → SFO Jul 24, 16:35 UTCJul 24, 18:05 UTC1h 30m
2026-07-24 SKW5468 SFO → SAT Jul 24, 14:06 UTCJul 24, 15:22 UTC1h 16m
2026-07-24 SKW5468 SFO → SAT Jul 24, 14:00 UTCJul 24, 15:25 UTC1h 25m
2026-07-24 SKW5291 DEN → MSP Jul 24, 12:24 UTCJul 24, 12:47 UTC23m
2026-07-24 SKW5291 DEN → MSP Jul 24, 12:25 UTCJul 24, 12:55 UTC30m
2026-07-24 SKW4793 LAX → RDD Jul 24, 01:55 UTCJul 24, 02:15 UTC20m
2026-07-23 SKW5848 FSD → DEN Jul 23, 22:45 UTCJul 24, 00:45 UTC2h 0m
2026-07-23 SKW5378 DEN → FSD Jul 23, 20:00 UTCJul 23, 21:10 UTC1h 10m
2026-07-23 SKW4675 SFO → PSP Jul 23, 17:45 UTCJul 23, 18:10 UTC25m
2026-07-23 SKW5306 SFO → ACV Jul 23, 16:05 UTCJul 23, 16:25 UTC20m
2026-07-23 SKW5791 LBB → DEN Jul 23, 13:10 UTCJul 23, 14:20 UTC1h 10m
2026-07-23 SKW5201 ORD → LIT Jul 23, 05:00 UTCJul 23, 06:30 UTC1h 30m
2026-07-22 SKW5378 DEN → FSD Jul 22, 20:05 UTCJul 22, 21:15 UTC1h 10m
2026-07-22 SKW5378 DEN → FSD Jul 22, 20:00 UTCJul 22, 21:13 UTC1h 13m
2026-07-22 SKW4675 SFO → PSP Jul 22, 17:55 UTCJul 22, 18:20 UTC25m
2026-07-22 SKW5306 SFO → ACV Jul 22, 16:30 UTCJul 22, 16:50 UTC20m
2026-07-22 SKW5791 LBB → DEN Jul 22, 13:10 UTCJul 22, 14:20 UTC1h 10m
2026-07-22 SKW5428 SFO → SBP Jul 22, 01:30 UTCJul 22, 02:30 UTC1h 0m
2026-07-21 SKW4719 COS → DEN Jul 21, 23:30 UTCJul 22, 00:05 UTC35m
2026-07-21 SKW4719 COS → DEN Jul 21, 23:45 UTCJul 22, 00:10 UTC25m
2026-07-21 SKW5546 LEX → ORD Jul 21, 22:05 UTCJul 21, 22:20 UTC15m
2026-07-21 SKW5541 - Jul 21, 18:50 UTCJul 21, 20:20 UTC1h 30m
2026-07-21 SKW5481 SMF → SFO Jul 21, 16:20 UTCJul 21, 17:45 UTC1h 25m
2026-07-21 SKW5209 COS → DEN Jul 21, 13:05 UTCJul 21, 13:25 UTC20m
2026-07-21 SKW5210 DEN → COS Jul 21, 01:05 UTCJul 21, 01:25 UTC20m
2026-07-21 SKW5210 DEN → COS Jul 21, 01:06 UTCJul 21, 01:22 UTC16m
2026-07-20 SKW5848 FSD → DEN Jul 20, 22:20 UTCJul 20, 23:45 UTC1h 25m
2026-07-20 SKW5848 FSD → DEN Jul 20, 22:20 UTCJul 20, 23:30 UTC1h 10m
2026-07-20 SKW5378 DEN → FSD Jul 20, 20:15 UTCJul 20, 21:25 UTC1h 10m
2026-07-20 SKW4675 SFO → PSP Jul 20, 18:04 UTCJul 20, 18:25 UTC21m
2026-07-20 SKW5306 SFO → ACV Jul 20, 16:10 UTCJul 20, 16:30 UTC20m
2026-07-20 SKW5791 LBB → DEN Jul 20, 13:10 UTCJul 20, 14:20 UTC1h 10m
2026-07-20 SKW5428 SFO → SBP Jul 20, 01:30 UTCJul 20, 02:30 UTC1h 0m
2026-07-19 SKW5989 - Jul 19, 22:30 UTCJul 19, 23:40 UTC1h 10m
2026-07-19 SKW5421 ORD → LIT Jul 19, 20:20 UTCJul 19, 21:20 UTC1h 0m
2026-07-19 SKW5793 SJC → DEN Jul 19, 17:00 UTCJul 19, 18:00 UTC1h 0m
2026-07-19 SKW5374 SGF → IAH Jul 19, 14:35 UTCJul 19, 15:30 UTC55m
2026-07-19 SKW5291 DEN → MSP Jul 19, 12:24 UTCJul 19, 12:46 UTC22m
2026-07-19 SKW5291 DEN → MSP Jul 19, 12:25 UTCJul 19, 12:50 UTC25m
2026-07-19 SKW4793 LAX → RDD Jul 19, 02:25 UTCJul 19, 02:40 UTC15m
2026-07-19 SKW5848 FSD → DEN Jul 19, 00:10 UTCJul 19, 01:20 UTC1h 10m
2026-07-18 SKW5378 DEN → FSD Jul 18, 22:00 UTCJul 18, 23:10 UTC1h 10m

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 1h 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, SKW5378, SKW5848, SKW5989.