Apparatus

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sensors Mode-S transponder

AA11DC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N748SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AA11DC
Octal
52410734
Decimal
11,145,692
Country
US
Tail
N748SK
Type
CRJ7
No current signal · last broadcast Jul 26, 18:40 UTC
Flights observed
722
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:40 UTC

Last known position

Most recent position reported by Mode-S AA11DC.

Country allocation

The ICAO 24-bit address AA11DC 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
SKW4891 SkyWest Airlines 16 2026-05-14
SKW4999 SkyWest Airlines 12 2026-05-12
SKW6377 SkyWest Airlines 11 2026-05-12
SKW6445 - 10 2026-07-11
SKW4969 SkyWest Airlines 9 2026-07-21
SKW4955 - 9 2026-07-15
SKW4954 - 9 2026-06-26
SKW6352 SkyWest Airlines 8 2026-07-22
SKW6273 SkyWest Airlines 8 2026-07-03
SKW6261 SkyWest Airlines 8 2026-07-26
SKW5003 - 8 2026-06-30
SKW6408 SkyWest Airlines 7 2026-05-25
SKW6405 SkyWest Airlines 7 2026-05-27
SKW6396 SkyWest Airlines 7 2026-06-03
SKW6340 SkyWest Airlines 7 2026-06-20
SKW6311 - 7 2026-06-18
SKW6240 - 7 2026-06-20
SKW4953 - 7 2026-07-13
SKW6291 - 6 2026-06-29
SKW6249 SkyWest Airlines 6 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW6261 DFW → SBN Jul 26, 17:40 UTCJul 26, 18:35 UTC55m
2026-07-26 SKW6261 DFW → SBN Jul 26, 15:50 UTCJul 26, 16:35 UTC45m
2026-07-26 SKW4964 BNA → ORD Jul 26, 12:55 UTCJul 26, 14:15 UTC1h 20m
2026-07-26 SKW4964 BNA → ORD Jul 26, 12:55 UTCJul 26, 14:10 UTC1h 15m
2026-07-26 SKW6326 MRY → PHX Jul 26, 01:40 UTCJul 26, 02:35 UTC55m
2026-07-26 SKW6326 MRY → PHX Jul 26, 01:35 UTCJul 26, 02:30 UTC55m
2026-07-25 SKW5008 PSP → PHX Jul 25, 23:25 UTCJul 26, 00:10 UTC45m
2026-07-25 SKW5008 PSP → PHX Jul 25, 21:45 UTCJul 25, 22:25 UTC40m
2026-07-25 SKW6261 DFW → SBN Jul 25, 19:15 UTCJul 25, 19:50 UTC35m
2026-07-25 SKW6261 DFW → SBN Jul 25, 17:55 UTCJul 25, 18:10 UTC15m
2026-07-25 SKW6391 TUS → LAX Jul 25, 14:45 UTCJul 25, 15:15 UTC30m
2026-07-25 SKW6391 TUS → LAX Jul 25, 14:37 UTCJul 25, 15:03 UTC26m
2026-07-25 SKW6391 TUS → LAX Jul 25, 13:10 UTCJul 25, 13:40 UTC30m
2026-07-24 SKW6250 PHX → SLC Jul 24, 14:20 UTCJul 24, 15:25 UTC1h 5m
2026-07-24 SKW6250 PHX → SLC Jul 24, 14:23 UTCJul 24, 15:07 UTC44m
2026-07-24 SKW6250 PHX → SLC Jul 24, 12:10 UTCJul 24, 13:00 UTC50m
2026-07-24 SKW6208 LAX → AUS Jul 24, 09:40 UTCJul 24, 10:20 UTC40m
2026-07-24 SKW6212 PHX → SEA Jul 24, 04:05 UTCJul 24, 04:30 UTC25m
2026-07-24 SKW6212 PHX → SEA Jul 24, 04:01 UTCJul 24, 04:34 UTC33m
2026-07-24 SKW6285 LAX → SLC Jul 24, 00:25 UTCJul 24, 02:05 UTC1h 40m
2026-07-23 SKW6285 LAX → SLC Jul 23, 21:55 UTCJul 23, 23:25 UTC1h 30m
2026-07-23 SKW4976 ORD → DTW Jul 23, 09:55 UTCJul 23, 11:00 UTC1h 5m
2026-07-23 SKW6498 ORD → LEX Jul 23, 03:40 UTCJul 23, 04:35 UTC55m
2026-07-22 SKW6245 ORD → DTW Jul 22, 23:30 UTCJul 23, 00:40 UTC1h 10m
2026-07-22 SKW6245 ORD → DTW Jul 22, 21:40 UTCJul 22, 22:25 UTC45m
2026-07-22 SKW6352 ORD → HSV Jul 22, 18:40 UTCJul 22, 19:30 UTC50m
2026-07-22 SKW6352 ORD → HSV Jul 22, 18:33 UTCJul 22, 19:11 UTC38m
2026-07-22 SKW6352 ORD → HSV Jul 22, 16:45 UTCJul 22, 17:35 UTC50m
2026-07-22 SKW4974 CMH → ORD Jul 22, 13:10 UTCJul 22, 14:05 UTC55m
2026-07-22 SKW4974 CMH → ORD Jul 22, 13:06 UTCJul 22, 13:57 UTC51m
2026-07-22 SKW4972 CVG → DFW Jul 22, 02:55 UTCJul 22, 03:35 UTC40m
2026-07-22 SKW4972 CVG → DFW Jul 22, 02:51 UTCJul 22, 03:30 UTC39m
2026-07-21 SKW4949 ORD → PIA Jul 21, 18:40 UTCJul 21, 19:00 UTC20m
2026-07-21 SKW4949 ORD → PIA Jul 21, 18:36 UTCJul 21, 19:31 UTC55m
2026-07-21 SKW4949 ORD → PIA Jul 21, 16:40 UTCJul 21, 17:30 UTC50m
2026-07-21 SKW4969 DFW → LRD Jul 21, 14:05 UTCJul 21, 15:00 UTC55m
2026-07-21 SKW4969 DFW → LRD Jul 21, 12:10 UTCJul 21, 13:00 UTC50m
2026-07-21 SKW6358 MKE → ORD Jul 21, 10:40 UTCJul 21, 11:10 UTC30m
2026-07-21 SKW6358 MKE → ORD Jul 21, 10:39 UTCJul 21, 11:04 UTC25m
2026-07-21 SKW6357 BHM → ORD Jul 21, 02:45 UTCJul 21, 03:00 UTC15m
2026-07-21 SKW6357 BHM → ORD Jul 21, 02:52 UTCJul 21, 03:17 UTC25m
2026-07-20 SKW6245 LEX → ORD Jul 20, 22:45 UTCJul 20, 23:55 UTC1h 9m
2026-07-20 SKW6245 - Jul 20, 20:55 UTCJul 20, 21:45 UTC50m
2026-07-20 SKW5004 ORD → SPI Jul 20, 17:20 UTCJul 20, 19:05 UTC1h 45m
2026-07-20 SKW5004 ORD → SPI Jul 20, 14:55 UTCJul 20, 16:30 UTC1h 35m
2026-07-20 SKW6251 PHX → SLC Jul 20, 10:45 UTCJul 20, 12:45 UTC2h 0m
2026-07-20 SKW4943 - Jul 20, 02:00 UTCJul 20, 03:50 UTC1h 50m
2026-07-20 SKW4943 ORD → BTV Jul 20, 01:59 UTCJul 20, 03:45 UTC1h 46m
2026-07-19 SKW6245 - Jul 19, 22:50 UTCJul 20, 00:00 UTC1h 10m
2026-07-19 SKW6245 ORD → LEX Jul 19, 20:49 UTCJul 19, 21:43 UTC54m

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 N748SK page for operator, model, and routing details .

Mode-S AA11DC frequently asked

What is Mode-S code AA11DC?
AA11DC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N748SK.
Where is Mode-S AA11DC registered?
Mode-S code AA11DC 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 AA11DC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA11DC, octal 52410734, decimal 11,145,692.
What flights does AA11DC operate?
Mode-S AA11DC has broadcast 20 distinct callsigns, including SKW4891, SKW4999, SKW6377, SKW6445, SKW4969.