Apparatus

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sensors Mode-S transponder

ACAE9A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N916SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AILINES INC

Hex
ACAE9A
Octal
53127232
Decimal
11,316,890
Country
US
Tail
N916SW
Type
CRJ2
No current signal · last broadcast Jul 26, 02:50 UTC
Flights observed
518
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 02:50 UTC

Last known position

Most recent position reported by Mode-S ACAE9A.

Country allocation

The ICAO 24-bit address ACAE9A 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
SKW6058 - 6 2026-07-20
SKW5126 SkyWest Airlines 6 2026-05-23
SKW5034 - 6 2026-07-09
SKW6067 - 5 2026-07-03
SKW5488 SkyWest Airlines 5 2026-05-28
SKW544C SkyWest Airlines 5 2026-05-02
SKW5096 - 5 2026-06-20
SKW5088 SkyWest Airlines 5 2026-05-10
SKW5087 SkyWest Airlines 5 2026-05-08
SKW5081 - 5 2026-06-16
SKW5028 SkyWest Airlines 5 2026-05-27
SKW4645 SkyWest Airlines 5 2026-07-24
SKW4635 SkyWest Airlines 5 2026-05-28
SKW792R - 4 2026-07-02
SKW6056 - 4 2026-07-22
SKW5997 SkyWest Airlines 4 2026-07-25
SKW578A SkyWest Airlines 4 2026-07-24
SKW5783 SkyWest Airlines 4 2026-07-24
SKW5708 SkyWest Airlines 4 2026-05-20
SKW5581 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5336 FAT → SFO Jul 26, 01:05 UTCJul 26, 02:50 UTC1h 45m
2026-07-25 SKW4742 ELP → ORD Jul 25, 22:40 UTCJul 26, 00:00 UTC1h 20m
2026-07-25 SKW4742 ELP → ORD Jul 25, 22:07 UTCJul 26, 00:02 UTC1h 55m
2026-07-25 SKW5568 ORD → MLI Jul 25, 19:00 UTCJul 25, 20:30 UTC1h 30m
2026-07-25 SKW4798 ORD → CHA Jul 25, 15:55 UTCJul 25, 17:20 UTC1h 25m
2026-07-25 SKW5997 PSP → SFO Jul 25, 14:10 UTCJul 25, 14:50 UTC40m
2026-07-25 SKW5997 PSP → SFO Jul 25, 13:35 UTCJul 25, 14:36 UTC1h 1m
2026-07-24 SKW578A ORD → DEC Jul 24, 23:15 UTCJul 24, 23:35 UTC20m
2026-07-24 SKW578A ORD → DEC Jul 24, 23:19 UTCJul 24, 23:38 UTC19m
2026-07-24 SKW5783 ORD → MSN Jul 24, 19:50 UTCJul 24, 20:15 UTC25m
2026-07-24 SKW4645 EUG → SFO Jul 24, 15:55 UTCJul 24, 16:20 UTC25m
2026-07-24 SKW4670 ORD → LEX Jul 24, 12:15 UTCJul 24, 13:20 UTC1h 5m
2026-07-24 SKW359M ORD → DLH Jul 24, 03:00 UTCJul 24, 03:55 UTC55m
2026-07-24 SKW5653 FAT → SFO Jul 24, 01:00 UTCJul 24, 01:25 UTC25m
2026-07-24 SKW5653 FAT → SFO Jul 24, 01:14 UTCJul 24, 01:21 UTC7m
2026-07-23 SKW5555 ORD → OKC Jul 23, 23:50 UTCJul 24, 00:10 UTC20m
2026-07-23 SKW6077 DVL → DEN Jul 23, 19:40 UTCJul 23, 20:25 UTC45m
2026-07-23 SKW546J ORD → PLN Jul 23, 17:25 UTCJul 23, 18:00 UTC35m
2026-07-23 SKW5020 DEC → ORD Jul 23, 14:05 UTCJul 23, 15:20 UTC1h 15m
2026-07-23 SKW325H DEN → JLN Jul 23, 04:10 UTCJul 23, 05:35 UTC1h 25m
2026-07-23 SKW325H DEN → JLN Jul 23, 04:15 UTCJul 23, 05:27 UTC1h 12m
2026-07-23 SKW5620 ORD → ABE Jul 23, 02:25 UTCJul 23, 03:10 UTC45m
2026-07-22 SKW5294 SAN → SFO Jul 22, 23:30 UTCJul 23, 00:20 UTC50m
2026-07-22 SKW5294 SAN → SFO Jul 22, 22:28 UTCJul 23, 00:25 UTC1h 57m
2026-07-22 SKW5024 - Jul 22, 20:10 UTCJul 22, 20:30 UTC20m
2026-07-22 SKW5024 DEN → CYS Jul 22, 18:40 UTCJul 22, 19:00 UTC20m
2026-07-22 SKW5112 ORD → CMX Jul 22, 15:35 UTCJul 22, 17:00 UTC1h 25m
2026-07-22 SKW6056 - Jul 22, 13:50 UTCJul 22, 14:35 UTC45m
2026-07-22 SKW313P - Jul 22, 03:20 UTCJul 22, 03:45 UTC25m
2026-07-22 SKW313P IAH → VCT Jul 22, 03:26 UTCJul 22, 03:43 UTC17m
2026-07-22 SKW5530 RDM → SFO Jul 22, 00:00 UTCJul 22, 00:55 UTC55m
2026-07-22 SKW5530 RDM → SFO Jul 22, 00:09 UTCJul 22, 00:51 UTC42m
2026-07-21 SKW5368 - Jul 21, 21:40 UTCJul 21, 22:25 UTC45m
2026-07-21 SKW5368 IAH → MFE Jul 21, 21:49 UTCJul 21, 22:30 UTC41m
2026-07-21 SKW5139 SLN → ORD Jul 21, 19:02 UTCJul 21, 19:16 UTC14m
2026-07-21 SKW5086 - Jul 21, 17:10 UTCJul 21, 17:45 UTC35m
2026-07-21 SKW5803 SHV → IAH Jul 21, 14:10 UTCJul 21, 15:30 UTC1h 20m
2026-07-20 SKW5597 DEN → ASE Jul 20, 23:50 UTCJul 21, 01:05 UTC1h 14m
2026-07-20 SKW5327 SBA → SFO Jul 20, 21:10 UTCJul 20, 22:35 UTC1h 25m
2026-07-20 SKW5691 SFO → BUR Jul 20, 18:40 UTCJul 20, 20:10 UTC1h 30m
2026-07-20 SKW5691 SFO → BUR Jul 20, 18:21 UTCJul 20, 20:10 UTC1h 49m
2026-07-20 SKW6058 - Jul 20, 15:15 UTCJul 20, 16:10 UTC55m
2026-07-20 SKW6058 PLN → ORD Jul 20, 15:02 UTCJul 20, 16:03 UTC1h 1m
2026-07-19 SKW364V - Jul 19, 23:00 UTCJul 19, 23:40 UTC40m
2026-07-19 SKW5029 - Jul 19, 21:20 UTCJul 19, 21:25 UTC5m
2026-07-19 SKW5029 JST → ORD Jul 19, 20:25 UTCJul 19, 21:03 UTC38m
2026-07-19 SKW5029 - Jul 19, 20:00 UTCJul 19, 21:25 UTC1h 25m
2026-07-19 SKW576U - Jul 19, 17:05 UTCJul 19, 17:25 UTC20m
2026-07-19 SKW6070 LBF → DEN Jul 19, 14:50 UTCJul 19, 15:25 UTC35m
2026-07-19 SKW6074 - Jul 19, 02:25 UTCJul 19, 03:25 UTC1h 0m

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 N916SW page for operator, model, and routing details .

Mode-S ACAE9A frequently asked

What is Mode-S code ACAE9A?
ACAE9A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N916SW.
Where is Mode-S ACAE9A registered?
Mode-S code ACAE9A 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 ACAE9A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 02:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACAE9A, octal 53127232, decimal 11,316,890.
What flights does ACAE9A operate?
Mode-S ACAE9A has broadcast 20 distinct callsigns, including SKW6058, SKW5126, SKW5034, SKW6067, SKW5488.