Apparatus

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sensors Mode-S transponder

A924D9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N689CA · BOMBARDIER Regional Jet CRJ-900 · operated by DELTA AIR LINES INC

Hex
A924D9
Octal
52222331
Decimal
11,085,017
Country
US
Tail
N689CA
Type
CRJ9
Broadcasting now · callsign SKW4102 · 5,725 ft
Flights observed
673
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:00 UTC

Current position

A924D9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A924D9 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
SKW4120 - 27 2026-07-20
SKW4096 SkyWest Airlines 18 2026-07-23
SKW4456 SkyWest Airlines 15 2026-07-26
SKW3642 SkyWest Airlines 15 2026-07-24
SKW4055 SkyWest Airlines 14 2026-07-04
SKW4123 SkyWest Airlines 13 2026-05-07
SKW4065 SkyWest Airlines 13 2026-07-25
SKW3877 - 13 2026-07-15
SKW3636 SkyWest Airlines 13 2026-07-24
SKW4040 - 12 2026-07-14
SKW3637 SkyWest Airlines 12 2026-07-25
SKW3621 SkyWest Airlines 12 2026-05-05
SKW3995 SkyWest Airlines 10 2026-05-22
SKW3984 SkyWest Airlines 10 2026-07-21
SKW4103 SkyWest Airlines 9 2026-05-21
SKW3831 - 9 2026-07-05
SKW3757 SkyWest Airlines 9 2026-07-24
SKW3565 - 9 2026-07-22
SKW3976 SkyWest Airlines 8 2026-07-26
SKW3898 SkyWest Airlines 8 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3965 ATL → ABY Jul 26, 20:25 UTCJul 26, 21:00 UTC35m
2026-07-26 SKW3976 SDF → MSP Jul 26, 18:50 UTCJul 26, 19:20 UTC30m
2026-07-26 SKW3976 SDF → MSP Jul 26, 18:51 UTCJul 26, 19:18 UTC27m
2026-07-26 SKW3976 SDF → MSP Jul 26, 16:45 UTCJul 26, 17:15 UTC30m
2026-07-26 SKW4456 SLC → SJC Jul 26, 14:05 UTCJul 26, 14:55 UTC50m
2026-07-26 SKW4456 SLC → SJC Jul 26, 12:00 UTCJul 26, 12:45 UTC45m
2026-07-26 SKW4060 MSP → GFK Jul 26, 09:35 UTCJul 26, 09:50 UTC15m
2026-07-26 SKW3684 SLC → PSC Jul 26, 02:10 UTCJul 26, 02:20 UTC10m
2026-07-25 SKW3785 MSP → FSD Jul 25, 21:50 UTCJul 25, 23:05 UTC1h 15m
2026-07-25 SKW3785 MSP → FSD Jul 25, 19:25 UTCJul 25, 20:30 UTC1h 5m
2026-07-25 SKW4065 SEA → PDX Jul 25, 16:45 UTCJul 25, 17:50 UTC1h 5m
2026-07-25 SKW4065 SEA → PDX Jul 25, 14:50 UTCJul 25, 15:45 UTC55m
2026-07-25 SKW3817 MOT → MSP Jul 25, 12:35 UTCJul 25, 13:00 UTC25m
2026-07-25 SKW3646 RDM → SEA Jul 25, 03:10 UTCJul 25, 03:35 UTC25m
2026-07-25 SKW3637 LAX → SMF Jul 25, 00:10 UTCJul 25, 00:50 UTC40m
2026-07-24 SKW3637 LAX → SMF Jul 24, 22:20 UTCJul 24, 23:00 UTC40m
2026-07-24 SKW3642 DTW → CMH Jul 24, 20:15 UTCJul 24, 20:55 UTC40m
2026-07-24 SKW3642 DTW → CMH Jul 24, 18:10 UTCJul 24, 18:55 UTC45m
2026-07-24 SKW3636 CLE → BOS Jul 24, 16:15 UTCJul 24, 16:55 UTC40m
2026-07-24 SKW3636 CLE → BOS Jul 24, 16:20 UTCJul 24, 16:53 UTC33m
2026-07-24 SKW3636 CLE → BOS Jul 24, 14:25 UTCJul 24, 15:05 UTC40m
2026-07-24 SKW3757 SLC → ONT Jul 24, 12:20 UTCJul 24, 13:00 UTC40m
2026-07-24 SKW3724 STL → LGA Jul 24, 00:15 UTCJul 24, 01:00 UTC45m
2026-07-23 SKW4096 SMF → SEA Jul 23, 21:10 UTCJul 23, 22:25 UTC1h 15m
2026-07-23 SKW4096 SMF → SEA Jul 23, 19:00 UTCJul 23, 20:05 UTC1h 5m
2026-07-23 SKW4065 SEA → PDX Jul 23, 16:55 UTCJul 23, 17:55 UTC1h 0m
2026-07-23 SKW4065 SEA → PDX Jul 23, 14:45 UTCJul 23, 15:45 UTC1h 0m
2026-07-23 SKW3665 BOI → SLC Jul 23, 12:15 UTCJul 23, 13:05 UTC50m
2026-07-23 SKW3544 MSP → IAD Jul 23, 00:55 UTCJul 23, 01:50 UTC55m
2026-07-22 SKW3565 - Jul 22, 22:15 UTCJul 22, 23:15 UTC1h 0m
2026-07-22 SKW3565 - Jul 22, 20:25 UTCJul 22, 21:10 UTC45m
2026-07-22 SKW3879 SLC → OAK Jul 22, 18:30 UTCJul 22, 19:05 UTC35m
2026-07-22 SKW3879 SLC → OAK Jul 22, 16:35 UTCJul 22, 17:20 UTC45m
2026-07-21 SKW3979 JFK → ORD Jul 21, 19:20 UTCJul 21, 19:50 UTC30m
2026-07-21 SKW3979 JFK → ORD Jul 21, 17:35 UTCJul 21, 18:05 UTC30m
2026-07-21 SKW3898 IAD → MSP Jul 21, 16:00 UTCJul 21, 16:20 UTC20m
2026-07-21 SKW3898 IAD → MSP Jul 21, 16:04 UTCJul 21, 16:24 UTC20m
2026-07-21 SKW3898 IAD → MSP Jul 21, 14:30 UTCJul 21, 14:55 UTC25m
2026-07-21 SKW3984 JFK → CMH Jul 21, 11:55 UTCJul 21, 12:40 UTC45m
2026-07-21 SKW3850 BOI → SLC Jul 21, 00:25 UTCJul 21, 01:15 UTC50m
2026-07-20 SKW4096 SMF → SEA Jul 20, 21:20 UTCJul 20, 22:30 UTC1h 10m
2026-07-20 SKW4096 SMF → SEA Jul 20, 18:50 UTCJul 20, 20:00 UTC1h 10m
2026-07-20 SKW4120 ROC → DTW Jul 20, 16:55 UTCJul 20, 17:50 UTC55m
2026-07-20 SKW4120 - Jul 20, 14:40 UTCJul 20, 15:25 UTC45m
2026-07-20 SKW3817 - Jul 20, 12:30 UTCJul 20, 13:00 UTC30m
2026-07-20 SKW3646 - Jul 20, 03:10 UTCJul 20, 03:35 UTC25m
2026-07-20 SKW3637 - Jul 20, 00:25 UTCJul 20, 01:10 UTC45m
2026-07-19 SKW3637 - Jul 19, 22:30 UTCJul 19, 23:05 UTC35m
2026-07-19 SKW3642 - Jul 19, 20:00 UTCJul 19, 20:40 UTC40m
2026-07-19 SKW3642 - Jul 19, 18:15 UTCJul 19, 18:55 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 N689CA page for operator, model, and routing details .

Mode-S A924D9 frequently asked

What is Mode-S code A924D9?
A924D9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N689CA.
Where is Mode-S A924D9 registered?
Mode-S code A924D9 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 A924D9 broadcasting right now?
Yes. Mode-S A924D9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A924D9, octal 52222331, decimal 11,085,017.
What flights does A924D9 operate?
Mode-S A924D9 has broadcast 20 distinct callsigns, including SKW4120, SKW4096, SKW4456, SKW3642, SKW4055.