Apparatus

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sensors Mode-S transponder

AA01DE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N744EV · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AA01DE
Octal
52400736
Decimal
11,141,598
Country
US
Tail
N744EV
Type
CRJ7
No current signal · last broadcast 1h ago
Flights observed
647
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AA01DE.

Country allocation

The ICAO 24-bit address AA01DE 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
SKW6255 SkyWest Airlines 14 2026-05-27
SKW6335 - 12 2026-07-13
SKW6191 - 11 2026-07-13
SKW6250 - 10 2026-06-22
SKW4949 SkyWest Airlines 10 2026-06-11
SKW6465 - 9 2026-06-24
SKW6363 SkyWest Airlines 9 2026-06-12
SKW6235 - 9 2026-06-17
SKW6203 - 9 2026-07-02
SKW6452 SkyWest Airlines 8 2026-05-07
SKW6436 SkyWest Airlines 8 2026-05-20
SKW6236 SkyWest Airlines 8 2026-05-03
SKW4987 - 8 2026-06-23
SKW6466 - 7 2026-07-11
SKW6427 - 7 2026-06-16
SKW6390 - 7 2026-07-03
SKW6362 SkyWest Airlines 7 2026-05-07
SKW6421 - 6 2026-07-12
SKW6380 SkyWest Airlines 6 2026-06-13
SKW6373 SkyWest Airlines 6 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW6305 - Jul 14, 02:55 UTCJul 14, 04:50 UTC1h 55m
2026-07-13 SKW6335 - Jul 13, 22:00 UTCJul 14, 00:05 UTC2h 5m
2026-07-13 SKW6335 SBN → DFW Jul 13, 21:55 UTCJul 14, 00:04 UTC2h 9m
2026-07-13 SKW251W - Jul 13, 18:45 UTCJul 13, 20:50 UTC2h 5m
2026-07-13 SKW251W DFW → SBN Jul 13, 18:42 UTCJul 13, 20:50 UTC2h 8m
2026-07-13 SKW4890 ACT → DFW Jul 13, 16:55 UTCJul 13, 17:25 UTC30m
2026-07-13 SKW4890 ACT → DFW Jul 13, 16:55 UTCJul 13, 17:36 UTC41m
2026-07-13 SKW4890 DFW → ACT Jul 13, 15:45 UTCJul 13, 16:10 UTC25m
2026-07-13 SKW6191 - Jul 13, 02:05 UTCJul 13, 03:10 UTC1h 5m
2026-07-12 SLW6191 - Jul 12, 20:20 UTCJul 12, 21:25 UTC1h 5m
2026-07-12 SKW6217 - Jul 12, 17:55 UTCJul 12, 18:50 UTC55m
2026-07-12 SKW6217 - Jul 12, 16:20 UTCJul 12, 17:01 UTC40m
2026-07-12 SKW6414 - Jul 12, 13:40 UTCJul 12, 15:10 UTC1h 30m
2026-07-12 SKW6442 - Jul 12, 02:55 UTCJul 12, 04:25 UTC1h 30m
2026-07-12 SKW6442 DFW → GJT Jul 12, 02:54 UTCJul 12, 04:35 UTC1h 41m
2026-07-12 SKW6421 - Jul 12, 00:10 UTCJul 12, 01:10 UTC1h 0m
2026-07-12 SKW6421 LBB → DFW Jul 12, 00:09 UTCJul 12, 01:06 UTC57m
2026-07-11 SKW6421 - Jul 11, 22:25 UTCJul 11, 23:05 UTC40m
2026-07-11 SKW6446 LNK → DFW Jul 11, 19:45 UTCJul 11, 21:05 UTC1h 20m
2026-07-11 SKW6446 LNK → DFW Jul 11, 19:43 UTCJul 11, 21:02 UTC1h 19m
2026-07-11 SKW6446 DFW → LNK Jul 11, 17:30 UTCJul 11, 18:50 UTC1h 20m
2026-07-11 SKW6466 - Jul 11, 13:25 UTCJul 11, 15:40 UTC2h 15m
2026-07-11 SKW6467 - Jul 11, 02:20 UTCJul 11, 04:40 UTC2h 20m
2026-07-11 SKW6295 - Jul 11, 00:00 UTCJul 11, 01:15 UTC1h 15m
2026-07-10 SKW6295 - Jul 10, 21:30 UTCJul 10, 22:55 UTC1h 25m
2026-07-10 SKW6194 FSD → DFW Jul 10, 18:10 UTCJul 10, 19:50 UTC1h 40m
2026-07-10 SKW6194 FSD → DFW Jul 10, 18:09 UTCJul 10, 19:49 UTC1h 40m
2026-07-10 SKW6194 - Jul 10, 15:10 UTCJul 10, 16:55 UTC1h 45m
2026-07-10 SKW6197 LNK → DFW Jul 10, 11:56 UTCJul 10, 13:11 UTC1h 15m
2026-07-10 SKW6197 LNK → DFW Jul 10, 11:55 UTCJul 10, 13:20 UTC1h 25m
2026-07-10 SKW6198 DFW → LNK Jul 10, 02:50 UTCJul 10, 04:15 UTC1h 25m
2026-07-09 SKW6191 - Jul 9, 22:20 UTCJul 9, 23:30 UTC1h 10m
2026-07-09 SKW6191 ROW → DFW Jul 9, 22:34 UTCJul 9, 23:25 UTC51m
2026-07-09 SKW6191 - Jul 9, 20:20 UTCJul 9, 21:20 UTC1h 0m
2026-07-09 SKW6217 - Jul 9, 18:05 UTCJul 9, 18:50 UTC45m
2026-07-09 SKW6217 LBB → DFW Jul 9, 18:00 UTCJul 9, 18:48 UTC48m
2026-07-09 SKW6217 - Jul 9, 16:00 UTCJul 9, 16:40 UTC40m
2026-07-09 SKW6414 SLC → ORD Jul 9, 12:45 UTCJul 9, 14:15 UTC1h 30m
2026-07-09 SKW6414 SLC → ORD Jul 9, 12:36 UTCJul 9, 14:07 UTC1h 31m
2026-07-09 SKW6442 - Jul 9, 02:40 UTCJul 9, 04:10 UTC1h 30m
2026-07-09 SKW6421 - Jul 9, 00:10 UTCJul 9, 00:55 UTC45m
2026-07-09 SKW6421 LBB → DFW Jul 9, 00:05 UTCJul 9, 00:54 UTC49m
2026-07-08 SKW6421 - Jul 8, 22:05 UTCJul 8, 22:50 UTC45m
2026-07-08 SKW4912 - Jul 8, 19:15 UTCJul 8, 20:45 UTC1h 30m
2026-07-08 SKW4912 - Jul 8, 16:15 UTCJul 8, 17:40 UTC1h 25m
2026-07-08 SKW6335 - Jul 8, 12:15 UTCJul 8, 14:00 UTC1h 45m
2026-07-08 SKW6305 - Jul 8, 00:50 UTCJul 8, 02:40 UTC1h 50m
2026-07-07 SKW4912 - Jul 7, 19:05 UTCJul 7, 20:35 UTC1h 30m
2026-07-07 SKW4912 - Jul 7, 16:05 UTCJul 7, 17:30 UTC1h 25m
2026-07-07 SKW6335 - Jul 7, 12:35 UTCJul 7, 14:25 UTC1h 50m

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 N744EV page for operator, model, and routing details .

Mode-S AA01DE frequently asked

What is Mode-S code AA01DE?
AA01DE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N744EV.
Where is Mode-S AA01DE registered?
Mode-S code AA01DE 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 AA01DE broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA01DE, octal 52400736, decimal 11,141,598.
What flights does AA01DE operate?
Mode-S AA01DE has broadcast 20 distinct callsigns, including SKW6255, SKW6335, SKW6191, SKW6250, SKW4949.