Apparatus

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sensors Mode-S transponder

A993F1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N716SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A993F1
Octal
52311761
Decimal
11,113,457
Country
US
Tail
N716SK
Type
CRJ7
No current signal · last broadcast 28d ago
Flights observed
359
Distinct callsigns
20
Country
US
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S A993F1.

Country allocation

The ICAO 24-bit address A993F1 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
SKW6218 - 9 2026-07-10
SKW6311 - 8 2026-06-15
SKW5013 SkyWest Airlines 7 2026-07-19
SKW6456 - 6 2026-07-01
SKW6437 - 6 2026-06-19
SKW6217 - 6 2026-07-18
SKW6239 - 5 2026-06-16
SKW6213 - 5 2026-06-28
SKW4996 SkyWest Airlines 5 2026-06-20
SKW4954 SkyWest Airlines 5 2026-07-22
SKW4949 SkyWest Airlines 5 2026-07-23
SKW4939 SkyWest Airlines 5 2026-07-19
SKW4938 - 5 2026-07-16
SKW4912 - 5 2026-07-14
SKW9914 - 4 2026-07-16
SKW9908 SkyWest Airlines 4 2026-06-09
SKW6421 SkyWest Airlines 4 2026-07-19
SKW6333 SkyWest Airlines 4 2026-06-20
SKW6317 - 4 2026-06-16
SKW6291 SkyWest Airlines 4 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4825 SMX → PHX Jul 26, 20:55 UTCJul 26, 21:45 UTC50m
2026-07-26 SKW4825 SMX → PHX Jul 26, 19:20 UTCJul 26, 19:55 UTC35m
2026-07-26 SKW6204 ORD → STL Jul 26, 16:15 UTCJul 26, 18:00 UTC1h 45m
2026-07-26 SKW6204 ORD → STL Jul 26, 13:30 UTCJul 26, 15:05 UTC1h 35m
2026-07-26 SKW6464 HSV → ORD Jul 26, 10:30 UTCJul 26, 12:05 UTC1h 35m
2026-07-26 SKW6426 PHX → SBA Jul 26, 05:40 UTCJul 26, 06:45 UTC1h 6m
2026-07-26 SKW6426 PHX → SBA Jul 26, 05:37 UTCJul 26, 06:49 UTC1h 12m
2026-07-26 SKW6476 ORD → COS Jul 26, 03:50 UTCJul 26, 04:25 UTC35m
2026-07-26 SKW6476 ORD → COS Jul 26, 02:35 UTCJul 26, 02:55 UTC20m
2026-07-26 SKW6211 DSM → ORD Jul 26, 00:00 UTCJul 26, 00:25 UTC25m
2026-07-25 SKW6211 DSM → ORD Jul 25, 23:57 UTCJul 26, 00:24 UTC27m
2026-07-25 SKW6211 DSM → ORD Jul 25, 22:50 UTCJul 25, 23:05 UTC15m
2026-07-25 SKW4903 SJC → PHX Jul 25, 20:10 UTCJul 25, 20:50 UTC40m
2026-07-25 SKW4903 SJC → PHX Jul 25, 20:10 UTCJul 25, 20:49 UTC39m
2026-07-25 SKW4903 SJC → PHX Jul 25, 18:30 UTCJul 25, 19:00 UTC30m
2026-07-25 SKW6445 LAX → RNO Jul 25, 15:35 UTCJul 25, 16:45 UTC1h 10m
2026-07-25 SKW6445 LAX → RNO Jul 25, 15:33 UTCJul 25, 16:34 UTC1h 1m
2026-07-25 SKW6445 LAX → RNO Jul 25, 13:25 UTCJul 25, 14:30 UTC1h 5m
2026-07-25 SKW6231 ORD → FSD Jul 25, 10:25 UTCJul 25, 11:40 UTC1h 15m
2026-07-25 SKW6231 ORD → FSD Jul 25, 10:22 UTCJul 25, 11:36 UTC1h 14m
2026-07-25 SKW6198 OKC → ORD Jul 25, 03:35 UTCJul 25, 05:00 UTC1h 25m
2026-07-25 SKW4956 DFW → SJT Jul 25, 00:50 UTCJul 25, 02:25 UTC1h 35m
2026-07-25 SKW4956 DFW → SJT Jul 25, 00:49 UTCJul 25, 02:20 UTC1h 31m
2026-07-24 SKW4956 DFW → SJT Jul 24, 21:45 UTCJul 24, 23:15 UTC1h 30m
2026-07-24 SKW6288 MHK → ORD Jul 24, 19:20 UTCJul 24, 20:25 UTC1h 5m
2026-07-24 SKW6288 MHK → ORD Jul 24, 19:20 UTCJul 24, 20:18 UTC58m
2026-07-24 SKW6288 MHK → ORD Jul 24, 17:35 UTCJul 24, 18:35 UTC1h 0m
2026-07-24 SKW6197 LAX → ELP Jul 24, 11:50 UTCJul 24, 13:20 UTC1h 30m
2026-07-24 SKW6197 LAX → ELP Jul 24, 11:45 UTCJul 24, 13:16 UTC1h 31m
2026-07-24 SKW6287 LAX → SEA Jul 24, 04:00 UTCJul 24, 05:10 UTC1h 10m
2026-07-24 SKW6398 GJT → DFW Jul 24, 00:50 UTCJul 24, 02:40 UTC1h 50m
2026-07-23 SKW6398 GJT → DFW Jul 23, 22:40 UTCJul 23, 23:55 UTC1h 15m
2026-07-23 SKW4949 ORD → PIA Jul 23, 18:45 UTCJul 23, 19:50 UTC1h 5m
2026-07-23 SKW4949 ORD → PIA Jul 23, 18:41 UTCJul 23, 19:45 UTC1h 4m
2026-07-23 SKW4949 ORD → PIA Jul 23, 16:50 UTCJul 23, 17:40 UTC50m
2026-07-23 SKW6363 DFW → BRO Jul 23, 13:50 UTCJul 23, 14:45 UTC55m
2026-07-23 SKW6363 DFW → BRO Jul 23, 12:00 UTCJul 23, 12:45 UTC45m
2026-07-23 SKW6291 SJC → LAX Jul 23, 00:30 UTCJul 23, 01:15 UTC45m
2026-07-22 SKW6291 SJC → LAX Jul 22, 22:55 UTCJul 22, 23:40 UTC45m
2026-07-22 SKW4954 GJT → PHX Jul 22, 18:55 UTCJul 22, 19:55 UTC1h 0m
2026-07-22 SKW4954 GJT → PHX Jul 22, 16:50 UTCJul 22, 17:35 UTC45m
2026-07-22 SKW4969 DFW → LRD Jul 22, 14:00 UTCJul 22, 14:50 UTC50m
2026-07-22 SKW4969 DFW → LRD Jul 22, 12:15 UTCJul 22, 13:05 UTC50m
2026-07-22 SKW4916 LAX → IAH Jul 22, 02:45 UTCJul 22, 03:20 UTC35m
2026-07-22 SKW4973 GGG → DFW Jul 22, 01:05 UTCJul 22, 01:10 UTC5m
2026-07-21 SKW4973 GGG → DFW Jul 21, 23:50 UTCJul 22, 01:10 UTC1h 20m
2026-07-21 SKW4973 GGG → DFW Jul 21, 23:48 UTCJul 22, 00:50 UTC1h 2m
2026-07-21 SKW4973 GGG → DFW Jul 21, 22:05 UTCJul 21, 22:55 UTC50m
2026-07-21 SKW6379 ORD → OKC Jul 21, 19:10 UTCJul 21, 20:10 UTC1h 0m
2026-07-21 SKW6379 ORD → OKC Jul 21, 17:25 UTCJul 21, 17:55 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 N716SK page for operator, model, and routing details .

Mode-S A993F1 frequently asked

What is Mode-S code A993F1?
A993F1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N716SK.
Where is Mode-S A993F1 registered?
Mode-S code A993F1 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 A993F1 broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A993F1, octal 52311761, decimal 11,113,457.
What flights does A993F1 operate?
Mode-S A993F1 has broadcast 20 distinct callsigns, including SKW6218, SKW6311, SKW5013, SKW6456, SKW6437.