Apparatus

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sensors Mode-S transponder

A7FB7D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N613SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A7FB7D
Octal
51775575
Decimal
11,008,893
Country
US
Tail
N613SK
Type
CRJ7
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
716
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A7FB7D.

Country allocation

The ICAO 24-bit address A7FB7D 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
SKW6455 SkyWest Airlines 19 2026-07-24
SKW6459 SkyWest Airlines 15 2026-07-23
SKW6218 - 13 2026-07-06
SKW4923 - 10 2026-06-19
SKW6412 SkyWest Airlines 9 2026-05-17
SKW6288 - 9 2026-07-13
SKW6194 - 9 2026-06-24
SKW6437 - 8 2026-06-25
SKW6256 SkyWest Airlines 8 2026-06-18
SKW6391 - 7 2026-07-19
SKW4966 SkyWest Airlines 7 2026-05-24
SKW4953 - 7 2026-07-03
SKW6513 SkyWest Airlines 6 2026-05-22
SKW6505 SkyWest Airlines 6 2026-07-24
SKW6439 SkyWest Airlines 6 2026-04-30
SKW6388 SkyWest Airlines 6 2026-06-05
SKW6369 - 6 2026-06-28
SKW6361 SkyWest Airlines 6 2026-04-30
SKW6355 - 6 2026-07-12
SKW6337 SkyWest Airlines 6 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW6244 ORD → FSD Jul 26, 21:00 UTCJul 26, 21:15 UTC15m
2026-07-26 SKW5014 HRL → DFW Jul 26, 17:37 UTCJul 26, 19:01 UTC1h 24m
2026-07-26 SKW5014 HRL → DFW Jul 26, 15:10 UTCJul 26, 16:30 UTC1h 20m
2026-07-26 SKW6213 ORD → SGF Jul 26, 12:45 UTCJul 26, 13:10 UTC25m
2026-07-26 SKW6213 ORD → SGF Jul 26, 12:42 UTCJul 26, 13:09 UTC27m
2026-07-26 SKW4888 SJC → PHX Jul 26, 01:15 UTCJul 26, 01:35 UTC20m
2026-07-25 SKW6519 PHX → SJC Jul 25, 18:45 UTCJul 25, 20:30 UTC1h 45m
2026-07-25 SKW6519 PHX → SJC Jul 25, 18:44 UTCJul 25, 20:10 UTC1h 26m
2026-07-25 SKW6277 PHX → OKC Jul 25, 15:58 UTCJul 25, 17:43 UTC1h 45m
2026-07-25 SKW6277 PHX → OKC Jul 25, 15:55 UTCJul 25, 17:50 UTC1h 55m
2026-07-25 SKW6441 FLG → PHX Jul 25, 14:10 UTCJul 25, 14:35 UTC25m
2026-07-25 SKW6441 FLG → PHX Jul 25, 14:02 UTCJul 25, 14:30 UTC28m
2026-07-25 SKW6474 PHX → FLG Jul 25, 02:25 UTCJul 25, 02:45 UTC20m
2026-07-24 SKW6455 TIJ → PHX Jul 24, 23:15 UTCJul 25, 00:05 UTC50m
2026-07-24 SKW6455 TIJ → PHX Jul 24, 23:09 UTCJul 25, 00:05 UTC56m
2026-07-24 SKW6455 TIJ → PHX Jul 24, 21:10 UTCJul 24, 21:55 UTC45m
2026-07-24 SKW6383 ORD → OKC Jul 24, 19:05 UTCJul 24, 19:35 UTC30m
2026-07-24 SKW6383 ORD → OKC Jul 24, 18:58 UTCJul 24, 19:33 UTC35m
2026-07-24 SKW6383 ORD → OKC Jul 24, 17:30 UTCJul 24, 17:55 UTC25m
2026-07-24 SKW6505 MRY → PHX Jul 24, 13:55 UTCJul 24, 14:25 UTC30m
2026-07-24 SKW6505 MRY → PHX Jul 24, 13:53 UTCJul 24, 14:22 UTC29m
2026-07-24 SKW6509 PHX → YUM Jul 24, 02:25 UTCJul 24, 02:45 UTC20m
2026-07-23 SKW6459 LAX → TUS Jul 23, 23:30 UTCJul 24, 01:15 UTC1h 45m
2026-07-23 SKW6459 LAX → TUS Jul 23, 23:26 UTCJul 24, 01:11 UTC1h 45m
2026-07-23 SKW6459 LAX → TUS Jul 23, 20:55 UTCJul 23, 22:40 UTC1h 45m
2026-07-23 SKW4812 OKC → PHX Jul 23, 18:35 UTCJul 23, 19:25 UTC50m
2026-07-23 SKW4811 PHX → SGU Jul 23, 16:20 UTCJul 23, 16:55 UTC35m
2026-07-23 SKW4811 PHX → SGU Jul 23, 16:19 UTCJul 23, 17:13 UTC54m
2026-07-23 SKW6441 FLG → PHX Jul 23, 14:00 UTCJul 23, 14:25 UTC25m
2026-07-23 SKW6441 FLG → PHX Jul 23, 13:58 UTCJul 23, 14:18 UTC20m
2026-07-23 SKW6474 PHX → FLG Jul 23, 02:35 UTCJul 23, 02:50 UTC15m
2026-07-22 SKW6459 LAX → TUS Jul 22, 23:35 UTCJul 23, 01:15 UTC1h 40m
2026-07-22 SKW6459 LAX → TUS Jul 22, 23:17 UTCJul 23, 01:12 UTC1h 55m
2026-07-22 SKW6459 LAX → TUS Jul 22, 20:50 UTCJul 22, 22:35 UTC1h 45m
2026-07-22 SKW4986 ORD → ICT Jul 22, 18:45 UTCJul 22, 19:05 UTC20m
2026-07-22 SKW4986 ORD → ICT Jul 22, 17:25 UTCJul 22, 17:45 UTC20m
2026-07-22 SKW4939 MAF → PHX Jul 22, 14:45 UTCJul 22, 16:10 UTC1h 25m
2026-07-22 SKW4892 DFW → FSM Jul 22, 02:35 UTCJul 22, 03:55 UTC1h 20m
2026-07-21 SKW6517 PHX → SBA Jul 21, 20:40 UTCJul 21, 22:55 UTC2h 15m
2026-07-21 SKW6517 PHX → SBA Jul 21, 20:48 UTCJul 21, 22:48 UTC2h 0m
2026-07-21 SKW6273 HOU → DFW Jul 21, 18:15 UTCJul 21, 19:55 UTC1h 40m
2026-07-21 SKW6273 HOU → DFW Jul 21, 18:16 UTCJul 21, 19:49 UTC1h 33m
2026-07-21 SKW6250 PHX → SLC Jul 21, 15:20 UTCJul 21, 16:25 UTC1h 5m
2026-07-21 SKW6250 PHX → SLC Jul 21, 15:15 UTCJul 21, 16:20 UTC1h 5m
2026-07-21 SKW6250 PHX → SLC Jul 21, 13:30 UTCJul 21, 14:30 UTC1h 0m
2026-07-21 SKW6208 LAX → AUS Jul 21, 10:45 UTCJul 21, 11:20 UTC35m
2026-07-21 SKW6208 LAX → AUS Jul 21, 10:39 UTCJul 21, 11:14 UTC35m
2026-07-21 SKW6212 PHX → SEA Jul 21, 04:05 UTCJul 21, 04:25 UTC20m
2026-07-21 SKW6438 DAY → ORD Jul 21, 00:50 UTCJul 21, 02:20 UTC1h 30m
2026-07-20 SKW6438 DAY → ORD Jul 20, 22:55 UTCJul 21, 00:05 UTC1h 9m

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 N613SK page for operator, model, and routing details .

Mode-S A7FB7D frequently asked

What is Mode-S code A7FB7D?
A7FB7D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N613SK.
Where is Mode-S A7FB7D registered?
Mode-S code A7FB7D 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 A7FB7D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7FB7D, octal 51775575, decimal 11,008,893.
What flights does A7FB7D operate?
Mode-S A7FB7D has broadcast 20 distinct callsigns, including SKW6455, SKW6459, SKW6218, SKW4923, SKW6412.