Apparatus

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sensors Mode-S transponder

A14D78

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N183SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A14D78
Octal
50246570
Decimal
10,571,128
Country
US
Tail
N183SY
Type
E75L
No current signal · last broadcast Jul 26, 21:55 UTC
Flights observed
714
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:55 UTC

Last known position

Most recent position reported by Mode-S A14D78.

Country allocation

The ICAO 24-bit address A14D78 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
SKW3319 SkyWest Airlines 9 2026-07-23
SKW3463 - 7 2026-07-16
SKW3346 SkyWest Airlines 7 2026-07-03
SKW3294 SkyWest Airlines 7 2026-07-19
SKW3293 SkyWest Airlines 7 2026-07-25
SKW3288 - 7 2026-07-01
SKW3499 - 6 2026-07-15
SKW3429 - 6 2026-07-16
SKW3410 SkyWest Airlines 6 2026-05-26
SKW3391 SkyWest Airlines 6 2026-06-03
SKW3303 - 6 2026-06-26
SKW3292 SkyWest Airlines 6 2026-07-25
SKW3076 - 6 2026-07-01
SKW3075 SkyWest Airlines 6 2026-07-25
SKW3068 - 6 2026-06-16
SKW918J - 5 2026-07-16
SKW3488 SkyWest Airlines 5 2026-07-18
SKW3440 SkyWest Airlines 5 2026-06-05
SKW3439 - 5 2026-07-18
SKW3371 SkyWest Airlines 5 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3087 SNA → SFO Jul 26, 20:45 UTCJul 26, 21:50 UTC1h 5m
2026-07-26 SKW3088 SFO → SNA Jul 26, 18:40 UTCJul 26, 19:50 UTC1h 10m
2026-07-26 SKW3284 LAX → PDX Jul 26, 15:00 UTCJul 26, 17:15 UTC2h 15m
2026-07-26 SKW3022 ORD → BNA Jul 26, 00:55 UTCJul 26, 03:05 UTC2h 10m
2026-07-25 SKW3202 LAX → PDX Jul 25, 22:38 UTCJul 25, 23:19 UTC41m
2026-07-25 SKW3202 LAX → PDX Jul 25, 22:30 UTCJul 25, 23:25 UTC55m
2026-07-25 SKW3075 STS → PSP Jul 25, 19:55 UTCJul 25, 21:25 UTC1h 30m
2026-07-25 SKW3205 SAN → SFO Jul 25, 17:40 UTCJul 25, 18:50 UTC1h 10m
2026-07-25 SKW3293 LAX → SJC Jul 25, 11:30 UTCJul 25, 13:55 UTC2h 25m
2026-07-25 SKW3292 ORD → BNA Jul 25, 02:25 UTCJul 25, 05:00 UTC2h 35m
2026-07-25 SKW3337 SAN → SFO Jul 25, 00:05 UTCJul 25, 01:20 UTC1h 15m
2026-07-24 SKW3352 SAN → SFO Jul 24, 22:00 UTCJul 24, 23:05 UTC1h 5m
2026-07-24 SKW3479 SJC → BOI Jul 24, 19:30 UTCJul 24, 20:50 UTC1h 20m
2026-07-24 SKW3342 LAX → SFO Jul 24, 16:35 UTCJul 24, 17:40 UTC1h 5m
2026-07-24 SKW3244 SFO → SNA Jul 24, 13:45 UTCJul 24, 15:00 UTC1h 15m
2026-07-24 SKW3495 EUG → SEA Jul 24, 05:00 UTCJul 24, 06:00 UTC1h 0m
2026-07-24 SKW3492 SNA → SFO Jul 24, 02:10 UTCJul 24, 03:20 UTC1h 10m
2026-07-24 SKW3080 YYZ → ORD Jul 24, 00:10 UTCJul 24, 01:20 UTC1h 10m
2026-07-23 SKW3081 SMF → SEA Jul 23, 22:00 UTCJul 23, 23:00 UTC1h 0m
2026-07-23 SKW3347 SAN → SFO Jul 23, 19:35 UTCJul 23, 20:45 UTC1h 10m
2026-07-23 SKW3217 PDX → ONT Jul 23, 15:40 UTCJul 23, 17:55 UTC2h 15m
2026-07-23 SKW3319 SFO → SNA Jul 23, 03:10 UTCJul 23, 04:55 UTC1h 45m
2026-07-22 SKW3482 SFO → SAN Jul 22, 21:15 UTCJul 22, 22:25 UTC1h 10m
2026-07-22 SKW3486 BOI → SFO Jul 22, 19:05 UTCJul 22, 20:10 UTC1h 5m
2026-07-22 SKW3287 SJC → LAX Jul 22, 15:35 UTCJul 22, 16:55 UTC1h 20m
2026-07-22 SKW3432 SAN → SFO Jul 22, 02:20 UTCJul 22, 03:25 UTC1h 5m
2026-07-22 SKW3231 SNA → SFO Jul 22, 00:10 UTCJul 22, 01:25 UTC1h 15m
2026-07-21 SKW3483 PDX → SJC Jul 21, 21:45 UTCJul 21, 23:05 UTC1h 20m
2026-07-21 SKW3483 PDX → SJC Jul 21, 21:46 UTCJul 21, 23:05 UTC1h 19m
2026-07-21 SKW3009 LRD → DFW Jul 21, 19:15 UTCJul 21, 20:25 UTC1h 10m
2026-07-21 SKW3400 PDX → SFO Jul 21, 17:00 UTCJul 21, 18:00 UTC1h 0m
2026-07-21 SKW3400 PDX → SFO Jul 21, 17:00 UTCJul 21, 17:52 UTC52m
2026-07-21 SKW3213 RDM → PHX Jul 21, 14:30 UTCJul 21, 15:30 UTC1h 0m
2026-07-21 SKW3432 SAN → SFO Jul 21, 02:25 UTCJul 21, 03:30 UTC1h 5m
2026-07-21 SKW3231 SNA → SFO Jul 21, 00:15 UTCJul 21, 01:25 UTC1h 10m
2026-07-21 SKW3231 SNA → SFO Jul 21, 00:13 UTCJul 21, 01:24 UTC1h 11m
2026-07-20 SKW3483 PDX → SJC Jul 20, 21:45 UTCJul 20, 23:00 UTC1h 15m
2026-07-20 SKW3062 STS → PSP Jul 20, 19:45 UTCJul 20, 20:10 UTC25m
2026-07-20 SKW3063 LAX → PDX Jul 20, 18:10 UTCJul 20, 18:40 UTC30m
2026-07-20 SKW3004 SJC → PHX Jul 20, 14:45 UTCJul 20, 16:25 UTC1h 40m
2026-07-20 SKW3298 LAX → SEA Jul 20, 02:30 UTCJul 20, 04:30 UTC2h 0m
2026-07-20 SKW3298 LAX → SEA Jul 20, 02:28 UTCJul 20, 04:05 UTC1h 37m
2026-07-20 SKW3433 - Jul 20, 00:40 UTCJul 20, 01:05 UTC25m
2026-07-19 SKW3433 BFI → BLI Jul 19, 23:00 UTCJul 19, 23:25 UTC25m
2026-07-19 SKW3294 GEG → SEA Jul 19, 21:15 UTCJul 19, 21:40 UTC25m
2026-07-19 SKW3294 GEG → SEA Jul 19, 19:40 UTCJul 19, 20:05 UTC25m
2026-07-19 SKW3089 RNO → SEA Jul 19, 16:40 UTCJul 19, 18:00 UTC1h 20m
2026-07-19 SKW3353 RDM → SFO Jul 19, 14:05 UTCJul 19, 15:10 UTC1h 5m
2026-07-19 SKW3109 - Jul 19, 12:35 UTCJul 19, 13:05 UTC30m
2026-07-19 SKW3066 LAS → SAN Jul 19, 05:10 UTCJul 19, 05:40 UTC30m

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 N183SY page for operator, model, and routing details .

Mode-S A14D78 frequently asked

What is Mode-S code A14D78?
A14D78 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N183SY.
Where is Mode-S A14D78 registered?
Mode-S code A14D78 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 A14D78 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A14D78, octal 50246570, decimal 10,571,128.
What flights does A14D78 operate?
Mode-S A14D78 has broadcast 20 distinct callsigns, including SKW3319, SKW3463, SKW3346, SKW3294, SKW3293.