Apparatus

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sensors Mode-S transponder

A154E6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N185SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A154E6
Octal
50252346
Decimal
10,573,030
Country
US
Tail
N185SY
Type
E75L
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
700
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A154E6.

Country allocation

The ICAO 24-bit address A154E6 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
SKW3120 SkyWest Airlines 10 2026-07-18
SKW3488 SkyWest Airlines 9 2026-07-23
SKW3346 - 8 2026-07-11
SKW3284 SkyWest Airlines 8 2026-06-20
SKW3064 SkyWest Airlines 8 2026-05-20
SKW3006 SkyWest Airlines 8 2026-07-19
SKW3439 SkyWest Airlines 7 2026-07-22
SKW3022 - 7 2026-06-20
SKW3020 SkyWest Airlines 7 2026-07-18
SKW833K - 6 2026-07-22
SKW3326 SkyWest Airlines 6 2026-05-23
SKW3223 SkyWest Airlines 6 2026-07-24
SKW3086 SkyWest Airlines 6 2026-07-26
SKW3075 SkyWest Airlines 6 2026-06-19
SKW3047 SkyWest Airlines 6 2026-06-12
SKW3019 - 6 2026-07-19
SKW3482 SkyWest Airlines 5 2026-07-26
SKW3467 SkyWest Airlines 5 2026-06-07
SKW3363 SkyWest Airlines 5 2026-06-13
SKW3343 - 5 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3482 SFO → SAN Jul 26, 20:50 UTCJul 26, 21:30 UTC40m
2026-07-26 SKW3486 BOI → SFO Jul 26, 18:10 UTCJul 26, 19:15 UTC1h 5m
2026-07-26 SKW3287 SJC → LAX Jul 26, 15:40 UTCJul 26, 16:50 UTC1h 10m
2026-07-26 SKW3086 GRK → DFW Jul 26, 01:45 UTCJul 26, 02:50 UTC1h 5m
2026-07-25 SKW3086 GRK → DFW Jul 25, 23:45 UTCJul 26, 00:50 UTC1h 5m
2026-07-25 SKW3076 HOU → DFW Jul 25, 21:20 UTCJul 25, 22:20 UTC1h 0m
2026-07-25 SKW3049 IDA → DFW Jul 25, 18:45 UTCJul 25, 19:50 UTC1h 5m
2026-07-25 SKW3114 SEA → LAX Jul 25, 16:30 UTCJul 25, 17:30 UTC1h 0m
2026-07-25 SKW3322 MFR → SEA Jul 25, 13:26 UTCJul 25, 14:48 UTC1h 22m
2026-07-25 SKW3322 MFR → SEA Jul 25, 13:15 UTCJul 25, 15:00 UTC1h 45m
2026-07-25 SKW3321 BOI → SEA Jul 25, 03:10 UTCJul 25, 04:35 UTC1h 25m
2026-07-25 SKW3466 SFO → PDX Jul 25, 00:45 UTCJul 25, 01:50 UTC1h 5m
2026-07-24 SKW3093 LAX → SFO Jul 24, 22:35 UTCJul 24, 23:45 UTC1h 10m
2026-07-24 SKW3223 RDM → BUR Jul 24, 18:30 UTCJul 24, 20:35 UTC2h 5m
2026-07-24 SKW3224 ORD → DTW Jul 24, 15:35 UTCJul 24, 17:15 UTC1h 40m
2026-07-24 SKW3260 EUG → BUR Jul 24, 02:50 UTCJul 24, 04:45 UTC1h 55m
2026-07-24 SKW3199 SAN → SMF Jul 24, 01:05 UTCJul 24, 01:55 UTC50m
2026-07-23 SKW3345 STS → SAN Jul 23, 22:15 UTCJul 23, 23:15 UTC1h 0m
2026-07-23 SKW3220 LAX → EUG Jul 23, 19:45 UTCJul 23, 20:45 UTC1h 0m
2026-07-23 SKW3431 SJC → PSP Jul 23, 18:05 UTCJul 23, 18:35 UTC30m
2026-07-23 SKW3105 LAX → SFO Jul 23, 15:35 UTCJul 23, 16:20 UTC45m
2026-07-23 SKW3106 SAN → SJC Jul 23, 05:15 UTCJul 23, 05:55 UTC40m
2026-07-23 SKW3280 PSP → SFO Jul 23, 02:40 UTCJul 23, 04:10 UTC1h 30m
2026-07-23 SKW3488 SJC → PDX Jul 23, 00:05 UTCJul 23, 01:45 UTC1h 40m
2026-07-22 SKW3439 STS → SAN Jul 22, 21:30 UTCJul 22, 22:50 UTC1h 20m
2026-07-22 SKW833K SAN → SMF Jul 22, 18:25 UTCJul 22, 19:21 UTC56m
2026-07-22 SKW833K - Jul 22, 18:10 UTCJul 22, 19:25 UTC1h 15m
2026-07-22 SKW3235 BOI → SAN Jul 22, 14:10 UTCJul 22, 16:15 UTC2h 5m
2026-07-22 SKW3235 BOI → SAN Jul 22, 14:17 UTCJul 22, 16:14 UTC1h 57m
2026-07-22 SKW3375 SJC → PDX Jul 22, 02:35 UTCJul 22, 03:50 UTC1h 15m
2026-07-21 SKW3070 SEA → PSC Jul 21, 23:30 UTCJul 22, 01:30 UTC2h 0m
2026-07-21 SKW3262 BFL → PHX Jul 21, 21:45 UTCJul 21, 22:35 UTC50m
2026-07-21 SKW3074 LAX → SFO Jul 21, 19:50 UTCJul 21, 20:20 UTC30m
2026-07-21 SKW3073 PDX → RDM Jul 21, 18:25 UTCJul 21, 18:55 UTC30m
2026-07-21 SKW3201 LAX → RNO Jul 21, 15:53 UTCJul 21, 16:27 UTC34m
2026-07-21 SKW3201 LAX → RNO Jul 21, 15:40 UTCJul 21, 16:40 UTC1h 0m
2026-07-21 SKW3198 SAN → SMF Jul 21, 13:45 UTCJul 21, 14:35 UTC50m
2026-07-21 SKW3096 EUG → SEA Jul 21, 00:15 UTCJul 21, 02:05 UTC1h 50m
2026-07-20 SKW3095 ACT → DFW Jul 20, 21:15 UTCJul 20, 23:15 UTC2h 0m
2026-07-20 SKW3209 - Jul 20, 18:10 UTCJul 20, 19:50 UTC1h 40m
2026-07-20 SKW3116 - Jul 20, 15:15 UTCJul 20, 16:55 UTC1h 40m
2026-07-20 SKW3331 - Jul 20, 02:30 UTCJul 20, 04:20 UTC1h 50m
2026-07-19 SKW3439 SMF → SAN Jul 19, 20:50 UTCJul 19, 22:05 UTC1h 15m
2026-07-19 SKW3439 SMF → SAN Jul 19, 20:49 UTCJul 19, 22:02 UTC1h 13m
2026-07-19 SKW833K - Jul 19, 18:35 UTCJul 19, 19:45 UTC1h 10m
2026-07-19 SKW3015 SMF → SAN Jul 19, 16:10 UTCJul 19, 17:35 UTC1h 25m
2026-07-19 SKW3015 SMF → SAN Jul 19, 15:55 UTCJul 19, 17:19 UTC1h 24m
2026-07-19 SKW3006 SEA → SFO Jul 19, 03:00 UTCJul 19, 04:10 UTC1h 10m
2026-07-19 SKW3019 SLC → SAN Jul 19, 00:25 UTCJul 19, 02:05 UTC1h 40m
2026-07-18 SKW3120 RNO → PDX Jul 18, 21:50 UTCJul 18, 23:30 UTC1h 40m

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 N185SY page for operator, model, and routing details .

Mode-S A154E6 frequently asked

What is Mode-S code A154E6?
A154E6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N185SY.
Where is Mode-S A154E6 registered?
Mode-S code A154E6 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 A154E6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A154E6, octal 50252346, decimal 10,573,030.
What flights does A154E6 operate?
Mode-S A154E6 has broadcast 20 distinct callsigns, including SKW3120, SKW3488, SKW3346, SKW3284, SKW3064.