Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A149C1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N182SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A149C1
Octal
50244701
Decimal
10,570,177
Country
US
Tail
N182SY
Type
E75L
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
565
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S A149C1.

Country allocation

The ICAO 24-bit address A149C1 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
SKW3350 - 10 2026-07-01
SKW3027 - 10 2026-07-14
SKW3440 SkyWest Airlines 9 2026-06-11
SKW3480 SkyWest Airlines 8 2026-07-19
SKW3432 SkyWest Airlines 8 2026-06-10
SKW3304 SkyWest Airlines 7 2026-06-21
SKW3262 SkyWest Airlines 7 2026-07-25
SKW3426 SkyWest Airlines 6 2026-06-10
SKW3303 - 6 2026-07-10
SKW3074 SkyWest Airlines 6 2026-05-05
SKW3026 - 6 2026-07-14
SKW3489 - 5 2026-07-11
SKW3464 SkyWest Airlines 5 2026-07-21
SKW3433 - 5 2026-07-11
SKW3404 - 5 2026-07-09
SKW3394 SkyWest Airlines 5 2026-06-05
SKW3285 SkyWest Airlines 5 2026-06-20
SKW3095 - 5 2026-07-18
SKW3078 SkyWest Airlines 5 2026-05-05
SKW3077 - 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3075 STS → PSP Jul 26, 20:10 UTCJul 26, 21:40 UTC1h 30m
2026-07-26 SKW3205 SAN → SFO Jul 26, 17:50 UTCJul 26, 18:55 UTC1h 5m
2026-07-26 SKW3235 BOI → SAN Jul 26, 14:30 UTCJul 26, 16:35 UTC2h 5m
2026-07-26 SKW3375 SJC → PDX Jul 26, 02:30 UTCJul 26, 03:45 UTC1h 15m
2026-07-25 SKW3070 SEA → PSC Jul 25, 23:35 UTCJul 26, 01:40 UTC2h 5m
2026-07-25 SKW3262 BFL → PHX Jul 25, 21:50 UTCJul 25, 22:40 UTC50m
2026-07-25 SKW3262 BFL → PHX Jul 25, 21:46 UTCJul 25, 22:35 UTC49m
2026-07-25 SKW3009 LRD → DFW Jul 25, 19:25 UTCJul 25, 20:35 UTC1h 10m
2026-07-25 SKW3009 LRD → DFW Jul 25, 19:23 UTCJul 25, 20:30 UTC1h 7m
2026-07-25 SKW3400 PDX → SFO Jul 25, 16:50 UTCJul 25, 17:50 UTC1h 0m
2026-07-25 SKW3213 RDM → PHX Jul 25, 14:40 UTCJul 25, 15:35 UTC55m
2026-07-25 SKW3086 GRK → DFW Jul 25, 01:50 UTCJul 25, 02:45 UTC55m
2026-07-24 SKW3086 GRK → DFW Jul 24, 23:40 UTCJul 25, 00:45 UTC1h 5m
2026-07-24 SKW3076 HOU → DFW Jul 24, 21:20 UTCJul 24, 22:25 UTC1h 5m
2026-07-24 SKW3076 HOU → DFW Jul 24, 21:28 UTCJul 24, 22:24 UTC56m
2026-07-24 SKW3049 IDA → DFW Jul 24, 18:50 UTCJul 24, 20:00 UTC1h 10m
2026-07-24 SKW3114 SEA → LAX Jul 24, 16:30 UTCJul 24, 17:35 UTC1h 5m
2026-07-24 SKW3322 MFR → SEA Jul 24, 13:25 UTCJul 24, 15:05 UTC1h 40m
2026-07-24 SKW3206 SAN → PDX Jul 24, 03:30 UTCJul 24, 05:05 UTC1h 35m
2026-07-24 SKW3019 SLC → ORD Jul 24, 00:40 UTCJul 24, 02:15 UTC1h 35m
2026-07-23 SKW3120 RNO → PDX Jul 23, 21:50 UTCJul 23, 23:20 UTC1h 30m
2026-07-23 SKW3009 LRD → DFW Jul 23, 19:20 UTCJul 23, 20:35 UTC1h 15m
2026-07-23 SKW3400 PDX → SFO Jul 23, 16:50 UTCJul 23, 17:50 UTC1h 0m
2026-07-23 SKW3213 RDM → PHX Jul 23, 14:35 UTCJul 23, 15:35 UTC1h 0m
2026-07-23 SKW3213 RDM → PHX Jul 23, 14:43 UTCJul 23, 15:30 UTC47m
2026-07-23 SKW3410 PSP → SFO Jul 23, 04:15 UTCJul 23, 05:55 UTC1h 40m
2026-07-23 SKW3410 PSP → SFO Jul 23, 04:05 UTCJul 23, 05:54 UTC1h 49m
2026-07-22 SKW3498 SAN → FCA Jul 22, 22:50 UTCJul 23, 02:50 UTC4h 0m
2026-07-22 SKW3087 SNA → SFO Jul 22, 20:45 UTCJul 22, 21:35 UTC50m
2026-07-22 SKW3088 SFO → SNA Jul 22, 18:35 UTCJul 22, 19:45 UTC1h 10m
2026-07-22 SKW3284 LAX → PDX Jul 22, 15:05 UTCJul 22, 17:20 UTC2h 15m
2026-07-22 SKW3356 - Jul 22, 03:40 UTCJul 22, 04:40 UTC1h 0m
2026-07-22 SKW3248 SJC → SEA Jul 22, 01:30 UTCJul 22, 02:40 UTC1h 10m
2026-07-21 SKW3494 SNA → SFO Jul 21, 23:30 UTCJul 22, 00:40 UTC1h 10m
2026-07-21 SKW3494 SNA → SFO Jul 21, 23:09 UTCJul 22, 00:29 UTC1h 20m
2026-07-21 SKW3208 - Jul 21, 19:50 UTCJul 21, 21:35 UTC1h 45m
2026-07-21 SKW3468 - Jul 21, 16:40 UTCJul 21, 18:05 UTC1h 25m
2026-07-21 SKW3468 SFO → JAC Jul 21, 16:46 UTCJul 21, 18:15 UTC1h 29m
2026-07-21 SKW3251 - Jul 21, 14:45 UTCJul 21, 15:45 UTC1h 0m
2026-07-21 SKW3464 SFO → LAX Jul 21, 02:55 UTCJul 21, 04:00 UTC1h 5m
2026-07-20 SKW3269 SMF → LAX Jul 20, 23:35 UTCJul 21, 00:40 UTC1h 5m
2026-07-20 SKW3237 - Jul 20, 21:30 UTCJul 20, 22:40 UTC1h 10m
2026-07-20 SKW3237 SFO → SNA Jul 20, 21:18 UTCJul 20, 22:40 UTC1h 22m
2026-07-20 SKW3025 DEN → SAN Jul 20, 18:30 UTCJul 20, 20:00 UTC1h 30m
2026-07-20 SKW3393 LAX → SFO Jul 20, 14:35 UTCJul 20, 16:10 UTC1h 35m
2026-07-19 SKW3369 PSP → SFO Jul 19, 21:20 UTCJul 19, 22:30 UTC1h 10m
2026-07-19 SKW3369 PSP → SFO Jul 19, 17:45 UTCJul 19, 19:10 UTC1h 25m
2026-07-19 SKW3480 BZN → SAN Jul 19, 14:15 UTCJul 19, 16:15 UTC2h 0m
2026-07-19 SKW3096 EUG → SEA Jul 19, 00:20 UTCJul 19, 02:00 UTC1h 40m
2026-07-19 SKW3096 EUG → SEA Jul 19, 00:17 UTCJul 19, 02:14 UTC1h 57m

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 N182SY page for operator, model, and routing details .

Mode-S A149C1 frequently asked

What is Mode-S code A149C1?
A149C1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N182SY.
Where is Mode-S A149C1 registered?
Mode-S code A149C1 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 A149C1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A149C1, octal 50244701, decimal 10,570,177.
What flights does A149C1 operate?
Mode-S A149C1 has broadcast 20 distinct callsigns, including SKW3350, SKW3027, SKW3440, SKW3480, SKW3432.