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sensors Mode-S transponder

AA1E38

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N751EV · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AA1E38
Octal
52417070
Decimal
11,148,856
Country
US
Tail
N751EV
Type
CRJ7
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
543
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S AA1E38.

Country allocation

The ICAO 24-bit address AA1E38 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
SKW5831 - 15 2026-07-18
SKW5649 - 15 2026-07-18
SKW6031 - 10 2026-07-22
SKW5377 - 9 2026-07-06
SKW5348 SkyWest Airlines 9 2026-07-24
SKW5257 SkyWest Airlines 9 2026-06-04
SKW5622 SkyWest Airlines 8 2026-07-24
SKW5495 - 8 2026-07-10
SKW5494 SkyWest Airlines 8 2026-05-30
SKW5221 - 8 2026-06-27
SKW5827 SkyWest Airlines 7 2026-07-05
SKW5336 - 7 2026-07-12
SKW5866 - 6 2026-07-02
SKW5643 - 6 2026-07-08
SKW5431 - 6 2026-07-05
SKW5319 SkyWest Airlines 6 2026-07-26
SKW5302 - 6 2026-07-07
SKW5233 SkyWest Airlines 6 2026-07-26
SKW4709 SkyWest Airlines 6 2026-07-22
SKW4704 SkyWest Airlines 6 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5233 SFO → BUR Jul 26, 20:35 UTCJul 26, 21:10 UTC35m
2026-07-26 SKW5319 GEG → SFO Jul 26, 16:55 UTCJul 26, 18:10 UTC1h 15m
2026-07-26 SKW5319 GEG → SFO Jul 26, 16:46 UTCJul 26, 18:04 UTC1h 18m
2026-07-26 SKW5975 DEN → ATL Jul 26, 14:00 UTCJul 26, 15:10 UTC1h 10m
2026-07-26 SKW5794 AVL → ORD Jul 26, 11:25 UTCJul 26, 12:40 UTC1h 15m
2026-07-25 SKW394Y DEN → MAF Jul 25, 20:05 UTCJul 25, 21:10 UTC1h 5m
2026-07-25 SKW5366 DEN → FAR Jul 25, 03:10 UTCJul 25, 17:40 UTC14h 30m
2026-07-25 SKW5353 SFO → RDD Jul 25, 00:15 UTCJul 25, 01:30 UTC1h 15m
2026-07-25 SKW5353 SFO → RDD Jul 25, 00:18 UTCJul 25, 01:24 UTC1h 6m
2026-07-24 SKW4776 ACV → SFO Jul 24, 22:25 UTCJul 24, 23:35 UTC1h 10m
2026-07-24 SKW5878 SFO → SBA Jul 24, 19:40 UTCJul 24, 20:45 UTC1h 5m
2026-07-24 SKW5310 DEN → SAF Jul 24, 17:40 UTCJul 24, 18:20 UTC40m
2026-07-24 SKW5348 FAR → ORD Jul 24, 15:00 UTCJul 24, 16:05 UTC1h 5m
2026-07-24 SKW5622 SFO → MSP Jul 24, 01:15 UTCJul 24, 02:10 UTC55m
2026-07-23 SKW5198 IAH → MBS Jul 23, 17:45 UTCJul 23, 22:10 UTC4h 25m
2026-07-22 SKW6031 - Jul 22, 20:15 UTCJul 22, 21:10 UTC55m
2026-07-22 SKW4709 ORD → CMH Jul 22, 17:55 UTCJul 22, 18:25 UTC30m
2026-07-22 SKW4704 DEN → GJT Jul 22, 16:00 UTCJul 22, 16:20 UTC20m
2026-07-22 SKW4696 COS → DEN Jul 22, 13:21 UTCJul 22, 13:44 UTC23m
2026-07-22 SKW4696 COS → DEN Jul 22, 13:20 UTCJul 22, 13:45 UTC25m
2026-07-22 SKW764Y DEN → COS Jul 22, 03:45 UTCJul 22, 04:00 UTC15m
2026-07-22 SKW764Y DEN → COS Jul 22, 03:32 UTCJul 22, 03:59 UTC27m
2026-07-21 SKW5678 - Jul 21, 03:00 UTCJul 21, 14:30 UTC11h 30m
2026-07-21 SKW5353 SFO → RDD Jul 21, 00:00 UTCJul 21, 01:15 UTC1h 15m
2026-07-20 SKW4776 ACV → SFO Jul 20, 21:50 UTCJul 20, 22:55 UTC1h 5m
2026-07-20 SKW4807 SFO → BUR Jul 20, 19:05 UTCJul 20, 20:35 UTC1h 30m
2026-07-20 SKW5333 ORD → MSN Jul 20, 16:20 UTCJul 20, 17:30 UTC1h 10m
2026-07-20 SKW5346 DEN → STL Jul 20, 13:10 UTCJul 20, 14:25 UTC1h 15m
2026-07-20 SKW455E DEN → HOB Jul 20, 01:00 UTCJul 20, 02:05 UTC1h 5m
2026-07-19 SKW5666 - Jul 19, 22:40 UTCJul 19, 23:40 UTC1h 0m
2026-07-19 SKW5950 ORD → SDF Jul 19, 20:15 UTCJul 19, 21:20 UTC1h 5m
2026-07-19 SKW5346 DEN → STL Jul 19, 15:50 UTCJul 19, 17:05 UTC1h 15m
2026-07-19 SKW5541 - Jul 19, 03:35 UTCJul 19, 04:40 UTC1h 5m
2026-07-18 SKW719V DEN → DEN Jul 18, 21:15 UTCJul 19, 01:05 UTC3h 50m
2026-07-18 SKW5649 LNK → DEN Jul 18, 18:10 UTCJul 18, 19:20 UTC1h 10m
2026-07-18 SKW5831 DEN → LNK Jul 18, 16:01 UTCJul 18, 16:54 UTC53m
2026-07-18 SKW5831 DEN → LNK Jul 18, 15:55 UTCJul 18, 17:00 UTC1h 5m
2026-07-18 SKW5791 - Jul 18, 13:50 UTCJul 18, 15:00 UTC1h 10m
2026-07-18 SKW5791 LBB → DEN Jul 18, 13:19 UTCJul 18, 14:55 UTC1h 36m
2026-07-18 SKW5428 SFO → SBP Jul 18, 01:54 UTCJul 18, 03:10 UTC1h 16m
2026-07-17 SKW5196 COS → DEN Jul 17, 22:35 UTCJul 17, 22:55 UTC20m
2026-07-17 SKW764Y DEN → COS Jul 17, 03:39 UTCJul 17, 03:59 UTC20m
2026-07-13 SKW5357 - Jul 13, 19:55 UTCJul 14, 01:00 UTC5h 5m
2026-07-13 SKW5462 - Jul 13, 16:55 UTCJul 13, 18:25 UTC1h 30m
2026-07-13 SKW5537 - Jul 13, 14:40 UTCJul 13, 16:00 UTC1h 20m
2026-07-13 SKW4651 - Jul 13, 10:50 UTCJul 13, 12:10 UTC1h 20m
2026-07-13 SKW4651 AVL → ORD Jul 13, 10:51 UTCJul 13, 12:09 UTC1h 18m
2026-07-13 SKW5663 - Jul 13, 01:55 UTCJul 13, 03:15 UTC1h 20m
2026-07-12 SKW5606 - Jul 12, 22:10 UTCJul 12, 23:45 UTC1h 35m
2026-07-12 SKW5565 - Jul 12, 19:50 UTCJul 12, 21:05 UTC1h 15m

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 N751EV page for operator, model, and routing details .

Mode-S AA1E38 frequently asked

What is Mode-S code AA1E38?
AA1E38 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N751EV.
Where is Mode-S AA1E38 registered?
Mode-S code AA1E38 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 AA1E38 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA1E38, octal 52417070, decimal 11,148,856.
What flights does AA1E38 operate?
Mode-S AA1E38 has broadcast 20 distinct callsigns, including SKW5831, SKW5649, SKW6031, SKW5377, SKW5348.