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sensors Mode-S transponder

A1600B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N188SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A1600B
Octal
50260013
Decimal
10,575,883
Country
US
Tail
N188SY
Type
E75L
Broadcasting now · callsign SKW3137 · 34,000 ft
Flights observed
667
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Current position

A1600B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1600B 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
SKW3337 - 9 2026-07-02
SKW3450 SkyWest Airlines 8 2026-07-21
SKW3006 - 8 2026-07-15
SKW3077 SkyWest Airlines 7 2026-05-29
SKW3076 SkyWest Airlines 7 2026-07-26
SKW3075 - 7 2026-07-11
SKW3488 - 6 2026-07-15
SKW3429 SkyWest Airlines 6 2026-07-23
SKW3410 SkyWest Airlines 6 2026-07-26
SKW3404 SkyWest Airlines 6 2026-06-16
SKW3402 SkyWest Airlines 6 2026-06-18
SKW3352 - 6 2026-07-19
SKW3349 SkyWest Airlines 6 2026-07-26
SKW3299 - 6 2026-06-26
SKW3219 - 6 2026-07-24
SKW3068 - 6 2026-07-11
SKW3064 SkyWest Airlines 6 2026-04-28
SKW3017 - 6 2026-06-27
SKW3015 - 6 2026-07-15
SKW918J - 5 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3076 HOU → DFW Jul 26, 22:35 UTCJul 26, 22:45 UTC10m
2026-07-26 SKW3349 PSP → SFO Jul 26, 19:05 UTCJul 26, 21:30 UTC2h 25m
2026-07-26 SKW3351 SAN → SJC Jul 26, 15:35 UTCJul 26, 17:30 UTC1h 55m
2026-07-26 SKW3050 SEA → EUG Jul 26, 13:05 UTCJul 26, 14:15 UTC1h 10m
2026-07-26 SKW3410 PSP → SFO Jul 26, 04:05 UTCJul 26, 05:45 UTC1h 40m
2026-07-26 SKW3410 PSP → SFO Jul 26, 04:05 UTCJul 26, 05:44 UTC1h 39m
2026-07-26 SKW3044 PDX → SMF Jul 26, 00:45 UTCJul 26, 02:15 UTC1h 30m
2026-07-25 SKW3093 LAX → SFO Jul 25, 22:35 UTCJul 25, 23:45 UTC1h 10m
2026-07-25 SKW3223 RDM → BUR Jul 25, 18:55 UTCJul 25, 20:45 UTC1h 50m
2026-07-25 SKW3224 ORD → DTW Jul 25, 15:45 UTCJul 25, 17:15 UTC1h 30m
2026-07-25 SKW3224 ORD → DTW Jul 25, 15:49 UTCJul 25, 17:14 UTC1h 25m
2026-07-25 SKW3260 EUG → BUR Jul 25, 02:45 UTCJul 25, 04:35 UTC1h 50m
2026-07-25 SKW3199 SAN → SMF Jul 25, 01:10 UTCJul 25, 01:55 UTC45m
2026-07-24 SKW3408 PDX → FAT Jul 24, 22:50 UTCJul 24, 23:20 UTC30m
2026-07-24 SKW3204 SEA → PDX Jul 24, 21:06 UTCJul 24, 21:31 UTC25m
2026-07-24 SKW3204 SEA → PDX Jul 24, 21:05 UTCJul 24, 21:35 UTC30m
2026-07-24 SKW3078 LAX → SFO Jul 24, 19:15 UTCJul 24, 19:45 UTC30m
2026-07-24 SKW3090 BIS → DFW Jul 24, 17:45 UTCJul 24, 18:15 UTC30m
2026-07-24 SKW3219 - Jul 24, 14:15 UTCJul 24, 15:55 UTC1h 40m
2026-07-24 SKW3133 LAX → SEA Jul 24, 01:55 UTCJul 24, 02:40 UTC45m
2026-07-23 SKW3429 SAN → SJC Jul 23, 23:45 UTCJul 24, 00:50 UTC1h 5m
2026-07-23 SKW918J - Jul 23, 20:30 UTCJul 23, 21:30 UTC1h 0m
2026-07-23 SKW3313 OAK → SAN Jul 23, 17:50 UTCJul 23, 19:05 UTC1h 15m
2026-07-23 SKW3320 SAN → OAK Jul 23, 15:25 UTCJul 23, 16:30 UTC1h 5m
2026-07-23 SKW3384 - Jul 23, 13:10 UTCJul 23, 14:05 UTC55m
2026-07-23 SKW3005 SAF → DFW Jul 23, 05:45 UTCJul 23, 06:45 UTC1h 0m
2026-07-23 SKW3249 SEA → SJC Jul 23, 01:55 UTCJul 23, 04:20 UTC2h 25m
2026-07-23 SKW3249 SEA → SJC Jul 23, 01:50 UTCJul 23, 04:19 UTC2h 29m
2026-07-22 SKW3250 - Jul 22, 21:30 UTCJul 23, 00:05 UTC2h 35m
2026-07-22 SKW3111 - Jul 22, 19:20 UTCJul 22, 20:35 UTC1h 15m
2026-07-22 SKW3079 - Jul 22, 16:40 UTCJul 22, 18:00 UTC1h 20m
2026-07-22 SKW3385 - Jul 22, 13:30 UTCJul 22, 14:00 UTC30m
2026-07-22 SKW3102 LAX → SFO Jul 22, 04:35 UTCJul 22, 05:00 UTC25m
2026-07-22 SKW3048 PDX → SEA Jul 22, 02:35 UTCJul 22, 03:15 UTC40m
2026-07-21 SKW3107 SJC → SAN Jul 21, 23:30 UTCJul 22, 01:10 UTC1h 40m
2026-07-21 SKW3092 SAN → SJC Jul 21, 21:40 UTCJul 21, 22:40 UTC1h 0m
2026-07-21 SKW3467 FCA → LAX Jul 21, 19:07 UTCJul 21, 19:59 UTC52m
2026-07-21 SKW3467 FCA → LAX Jul 21, 18:50 UTCJul 21, 20:00 UTC1h 10m
2026-07-21 SKW3450 SNA → SFO Jul 21, 16:40 UTCJul 21, 17:55 UTC1h 15m
2026-07-21 SKW3450 SNA → SFO Jul 21, 16:55 UTCJul 21, 17:50 UTC55m
2026-07-21 SKW3497 LAX → PDX Jul 21, 14:50 UTCJul 21, 15:55 UTC1h 5m
2026-07-21 SKW3497 LAX → PDX Jul 21, 14:34 UTCJul 21, 15:49 UTC1h 15m
2026-07-21 SKW3356 - Jul 21, 03:45 UTCJul 21, 04:45 UTC1h 0m
2026-07-21 SKW3248 SJC → SEA Jul 21, 01:30 UTCJul 21, 02:35 UTC1h 5m
2026-07-20 SKW3494 SNA → SFO Jul 20, 23:35 UTCJul 21, 00:45 UTC1h 10m
2026-07-20 SKW3208 - Jul 20, 20:45 UTCJul 20, 22:30 UTC1h 45m
2026-07-20 SKW3468 - Jul 20, 16:35 UTCJul 20, 18:05 UTC1h 30m
2026-07-20 SKW3251 - Jul 20, 14:10 UTCJul 20, 15:10 UTC1h 0m
2026-07-20 SKW3464 - Jul 20, 04:10 UTCJul 20, 05:40 UTC1h 30m
2026-07-20 SKW3248 SJC → SEA Jul 20, 01:35 UTCJul 20, 02:40 UTC1h 5m

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 N188SY page for operator, model, and routing details .

Mode-S A1600B frequently asked

What is Mode-S code A1600B?
A1600B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N188SY.
Where is Mode-S A1600B registered?
Mode-S code A1600B 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 A1600B broadcasting right now?
Yes. Mode-S A1600B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1600B, octal 50260013, decimal 10,575,883.
What flights does A1600B operate?
Mode-S A1600B has broadcast 20 distinct callsigns, including SKW3337, SKW3450, SKW3006, SKW3077, SKW3076.