Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
Broadcasting now · callsign SKW6455 · 9,925 ft
Flights observed
627
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

AA11DC is currently broadcasting. Map zoomed to live position.

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
SKW4954 - 9 2026-06-26
SKW6273 SkyWest Airlines 8 2026-07-03
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
SKW4969 SkyWest Airlines 7 2026-06-29
SKW4953 - 7 2026-07-13
SKW6291 - 6 2026-06-29
SKW6249 SkyWest Airlines 6 2026-05-21
SKW6232 - 6 2026-07-12
SKW6223 - 6 2026-07-11
SKW4955 - 6 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW6455 - Jul 14, 00:50 UTCJul 14, 02:50 UTC2h 0m
2026-07-13 SKW6455 - Jul 13, 23:10 UTCJul 14, 00:00 UTC50m
2026-07-13 SKW6473 - Jul 13, 19:55 UTCJul 13, 21:55 UTC2h 0m
2026-07-13 SKW5007 - Jul 13, 16:45 UTCJul 13, 18:00 UTC1h 15m
2026-07-13 SKW5007 ORD → ICT Jul 13, 16:58 UTCJul 13, 18:00 UTC1h 2m
2026-07-13 SKW4953 - Jul 13, 14:35 UTCJul 13, 15:25 UTC50m
2026-07-13 SKW4953 CMH → ORD Jul 13, 14:38 UTCJul 13, 15:23 UTC45m
2026-07-13 SKW4953 - Jul 13, 12:50 UTCJul 13, 13:20 UTC30m
2026-07-13 SKW4953 - Jul 13, 12:30 UTCJul 13, 12:45 UTC15m
2026-07-13 SKW6207 - Jul 13, 09:55 UTCJul 13, 10:35 UTC40m
2026-07-13 SKW6193 ORD → AZO Jul 13, 03:15 UTCJul 13, 03:40 UTC25m
2026-07-13 SKW6476 - Jul 13, 00:40 UTCJul 13, 01:10 UTC30m
2026-07-12 SKW6476 - Jul 12, 22:55 UTCJul 12, 23:20 UTC25m
2026-07-12 SKW4950 - Jul 12, 20:01 UTCJul 12, 21:00 UTC1h 0m
2026-07-12 SKW4950 CMH → ORD Jul 12, 20:08 UTCJul 12, 20:58 UTC50m
2026-07-12 SKW4950 ORD → CMH Jul 12, 18:01 UTCJul 12, 18:45 UTC45m
2026-07-12 SKW6232 - Jul 12, 15:40 UTCJul 12, 16:25 UTC45m
2026-07-12 SKW6232 - Jul 12, 13:55 UTCJul 12, 14:15 UTC20m
2026-07-12 SKW6465 - Jul 12, 11:10 UTCJul 12, 12:15 UTC1h 5m
2026-07-12 SKW6465 DTW → ORD Jul 12, 11:10 UTCJul 12, 11:49 UTC39m
2026-07-12 SKW4931 - Jul 12, 00:20 UTCJul 12, 01:10 UTC50m
2026-07-12 SKW4931 ORD → DTW Jul 12, 00:19 UTCJul 12, 01:16 UTC57m
2026-07-11 SKW4913 - Jul 11, 21:05 UTCJul 11, 22:25 UTC1h 20m
2026-07-11 SKW4913 ORD → BUF Jul 11, 18:55 UTCJul 11, 20:00 UTC1h 5m
2026-07-11 SKW6445 - Jul 11, 15:40 UTCJul 11, 17:10 UTC1h 30m
2026-07-11 SKW6445 - Jul 11, 13:15 UTCJul 11, 14:30 UTC1h 15m
2026-07-11 SKW6223 ERI → ORD Jul 11, 10:32 UTCJul 11, 11:10 UTC38m
2026-07-11 SKW6223 - Jul 11, 10:15 UTCJul 11, 11:35 UTC1h 20m
2026-07-11 SKW6222 ORD → ERI Jul 11, 02:40 UTCJul 11, 03:42 UTC1h 2m
2026-07-11 SKW6222 ORD → ERI Jul 11, 02:40 UTCJul 11, 03:40 UTC1h 0m
2026-07-10 SKW5014 - Jul 10, 22:55 UTCJul 11, 00:20 UTC1h 25m
2026-07-10 SKW5014 TYS → ORD Jul 10, 22:53 UTCJul 11, 00:14 UTC1h 21m
2026-07-10 SKW9912 - Jul 10, 20:45 UTCJul 10, 21:55 UTC1h 10m
2026-07-10 SKW9912 ORD → TYS Jul 10, 20:47 UTCJul 10, 21:46 UTC59m
2026-07-10 SKW6261 - Jul 10, 17:20 UTCJul 10, 18:25 UTC1h 5m
2026-07-10 SKW6261 - Jul 10, 15:30 UTCJul 10, 16:15 UTC45m
2026-07-10 SKW4974 - Jul 10, 13:00 UTCJul 10, 13:55 UTC55m
2026-07-10 SKW4972 ORD → DAY Jul 10, 03:25 UTCJul 10, 04:10 UTC45m
2026-07-10 SKW6211 - Jul 10, 00:10 UTCJul 10, 00:45 UTC35m
2026-07-09 SKW6211 - Jul 9, 23:00 UTCJul 9, 23:20 UTC20m
2026-07-09 SKW4955 COS → ORD Jul 9, 19:05 UTCJul 9, 21:15 UTC2h 10m
2026-07-09 SKW4955 - Jul 9, 15:45 UTCJul 9, 17:50 UTC2h 5m
2026-07-09 SKW6263 - Jul 9, 13:55 UTCJul 9, 14:35 UTC40m
2026-07-09 SKW6263 ORD → MKE Jul 9, 12:30 UTCJul 9, 12:45 UTC15m
2026-07-09 SKW4976 - Jul 9, 09:35 UTCJul 9, 10:40 UTC1h 5m
2026-07-09 SKW6498 - Jul 9, 04:05 UTCJul 9, 04:55 UTC50m
2026-07-08 SKW6230 CVG → ORD Jul 8, 23:40 UTCJul 9, 00:30 UTC50m
2026-07-08 SKW6230 - Jul 8, 22:10 UTCJul 8, 22:55 UTC45m
2026-07-08 SKW4955 COS → ORD Jul 8, 18:45 UTCJul 8, 20:55 UTC2h 10m
2026-07-08 SKW4955 COS → ORD Jul 8, 18:34 UTCJul 8, 20:50 UTC2h 16m

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?
Yes. Mode-S AA11DC is currently airborne.
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, SKW4954.