Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AAB38F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N789SK · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
AAB38F
Octal
52531617
Decimal
11,187,087
Country
US
Tail
N789SK
Type
CRJ7
No current signal · last broadcast Jul 26, 16:10 UTC
Flights observed
329
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 16:10 UTC

Last known position

Most recent position reported by Mode-S AAB38F.

Country allocation

The ICAO 24-bit address AAB38F 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
SKW5617 SkyWest Airlines 6 2026-07-21
SKW5703 SkyWest Airlines 5 2026-07-24
SKW5556 - 5 2026-06-20
SKW6037 SkyWest Airlines 4 2026-07-21
SKW5982 - 4 2026-07-09
SKW5825 SkyWest Airlines 4 2026-07-25
SKW5783 SkyWest Airlines 4 2026-06-04
SKW5629 SkyWest Airlines 4 2026-07-24
SKW5606 - 4 2026-06-26
SKW5336 SkyWest Airlines 4 2026-07-22
SKW5238 SkyWest Airlines 4 2026-06-20
SKW5234 SkyWest Airlines 4 2026-07-24
SKW4748 SkyWest Airlines 4 2026-07-22
SKW4726 - 4 2026-07-05
SKW4704 - 4 2026-07-02
SKW5878 SkyWest Airlines 3 2026-06-21
SKW5865 SkyWest Airlines 3 2026-07-20
SKW5853 SkyWest Airlines 3 2026-07-21
SKW5830 SkyWest Airlines 3 2026-07-20
SKW5824 SkyWest Airlines 3 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5348 FAR → ORD Jul 26, 15:00 UTCJul 26, 16:05 UTC1h 5m
2026-07-26 SKW5622 SFO → MSP Jul 26, 01:00 UTCJul 26, 01:55 UTC55m
2026-07-25 SKW5825 SFO → BOI Jul 25, 17:15 UTCJul 25, 18:20 UTC1h 5m
2026-07-25 SKW5825 SFO → BOI Jul 25, 17:04 UTCJul 25, 18:19 UTC1h 15m
2026-07-25 SKW5215 LGA → ORD Jul 25, 14:40 UTCJul 25, 16:00 UTC1h 20m
2026-07-25 SKW5840 PHX → IAH Jul 25, 10:15 UTCJul 25, 10:55 UTC40m
2026-07-24 SKW5640 ORD → TVC Jul 24, 20:55 UTCJul 24, 21:30 UTC35m
2026-07-24 SKW5714 SJC → DEN Jul 24, 18:30 UTCJul 24, 19:25 UTC55m
2026-07-24 SKW5234 MLI → ORD Jul 24, 16:40 UTCJul 24, 17:20 UTC40m
2026-07-24 SKW5234 MLI → ORD Jul 24, 16:43 UTCJul 24, 17:19 UTC36m
2026-07-24 SKW5629 SAT → IAH Jul 24, 14:20 UTCJul 24, 15:05 UTC45m
2026-07-24 SKW5703 SFO → PSP Jul 24, 12:35 UTCJul 24, 13:25 UTC50m
2026-07-24 SKW5723 SBN → ORD Jul 24, 10:00 UTCJul 24, 10:15 UTC15m
2026-07-23 SKW4636 ORD → SBN Jul 23, 23:15 UTCJul 23, 23:35 UTC20m
2026-07-23 SKW4691 SFO → TUS Jul 23, 19:50 UTCJul 23, 20:30 UTC40m
2026-07-23 SKW4647 CHO → ORD Jul 23, 18:10 UTCJul 23, 18:45 UTC35m
2026-07-23 SKW5657 SHV → IAH Jul 23, 15:55 UTCJul 23, 16:30 UTC35m
2026-07-23 SKW5656 DEN → IDA Jul 23, 14:45 UTCJul 23, 15:10 UTC25m
2026-07-22 SKW5336 FAT → SFO Jul 22, 23:55 UTCJul 23, 01:10 UTC1h 15m
2026-07-22 SKW4742 ELP → ORD Jul 22, 21:40 UTCJul 22, 22:50 UTC1h 10m
2026-07-22 SKW4748 GRB → ORD Jul 22, 18:45 UTCJul 22, 19:15 UTC30m
2026-07-22 SKW5720 SFO → BOI Jul 22, 17:15 UTCJul 22, 17:35 UTC20m
2026-07-22 SKW5629 SAT → IAH Jul 22, 14:25 UTCJul 22, 15:30 UTC1h 5m
2026-07-22 SKW5703 SFO → PSP Jul 22, 12:35 UTCJul 22, 13:25 UTC50m
2026-07-22 SKW5703 SFO → PSP Jul 22, 12:32 UTCJul 22, 13:21 UTC49m
2026-07-21 SKW5639 - Jul 21, 23:40 UTCJul 22, 01:25 UTC1h 45m
2026-07-21 SKW5689 SMF → SFO Jul 21, 21:20 UTCJul 21, 22:35 UTC1h 15m
2026-07-21 SKW5617 PSP → SFO Jul 21, 18:10 UTCJul 21, 19:55 UTC1h 45m
2026-07-21 SKW6037 LAX → RDD Jul 21, 16:04 UTCJul 21, 17:18 UTC1h 14m
2026-07-21 SKW5853 LGA → ORD Jul 21, 12:45 UTCJul 21, 14:15 UTC1h 30m
2026-07-21 SKW5767 DAY → ORD Jul 21, 03:00 UTCJul 21, 04:25 UTC1h 25m
2026-07-20 SKW5865 BNA → ORD Jul 20, 22:45 UTCJul 20, 23:05 UTC20m
2026-07-20 SKW5865 BNA → ORD Jul 20, 22:48 UTCJul 20, 23:09 UTC21m
2026-07-20 SKW5505 - Jul 20, 20:50 UTCJul 20, 21:15 UTC25m
2026-07-20 SKW5617 PSP → SFO Jul 20, 18:20 UTCJul 20, 19:35 UTC1h 15m
2026-07-20 SKW6037 LAX → RDD Jul 20, 15:45 UTCJul 20, 16:50 UTC1h 5m
2026-07-20 SKW5710 - Jul 20, 12:15 UTCJul 20, 12:45 UTC30m
2026-07-20 SKW5830 PWM → ORD Jul 20, 02:50 UTCJul 20, 03:10 UTC20m
2026-07-20 SKW5830 PWM → ORD Jul 20, 02:55 UTCJul 20, 03:18 UTC23m
2026-07-20 SKW4723 - Jul 20, 00:30 UTCJul 20, 01:25 UTC55m
2026-07-19 SKW4781 - Jul 19, 22:55 UTCJul 19, 23:35 UTC40m
2026-07-19 SKW4781 ORD → CID Jul 19, 22:55 UTCJul 19, 23:31 UTC36m
2026-07-19 SKW4748 GRB → ORD Jul 19, 18:50 UTCJul 19, 19:30 UTC40m
2026-07-19 SKW5720 - Jul 19, 17:15 UTCJul 19, 17:35 UTC20m
2026-07-19 SKW5629 - Jul 19, 15:00 UTCJul 19, 16:05 UTC1h 5m
2026-07-19 SKW5703 - Jul 19, 12:55 UTCJul 19, 13:40 UTC45m
2026-07-19 SKW5889 - Jul 19, 10:50 UTCJul 19, 11:25 UTC35m
2026-07-18 SKW701H ORD → MCW Jul 18, 23:25 UTCJul 18, 23:50 UTC25m
2026-07-18 SKW5869 - Jul 18, 21:10 UTCJul 18, 22:10 UTC1h 0m
2026-07-18 SKW404F - Jul 18, 19:05 UTCJul 18, 19:45 UTC40m

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 N789SK page for operator, model, and routing details .

Mode-S AAB38F frequently asked

What is Mode-S code AAB38F?
AAB38F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N789SK.
Where is Mode-S AAB38F registered?
Mode-S code AAB38F 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 AAB38F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAB38F, octal 52531617, decimal 11,187,087.
What flights does AAB38F operate?
Mode-S AAB38F has broadcast 20 distinct callsigns, including SKW5617, SKW5703, SKW5556, SKW6037, SKW5982.