Apparatus

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sensors Mode-S transponder

A1D890

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N218PS · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
A1D890
Octal
50354220
Decimal
10,606,736
Country
US
Tail
N218PS
Type
CRJ2
No current signal · last broadcast Jul 26, 21:35 UTC
Flights observed
663
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S A1D890.

Country allocation

The ICAO 24-bit address A1D890 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
SKW5049 - 9 2026-06-16
SKW5020 SkyWest Airlines 8 2026-07-19
SKW5103 SkyWest Airlines 7 2026-07-26
SKW4633 SkyWest Airlines 7 2026-07-16
SKW6069 - 6 2026-07-05
SKW6068 SkyWest Airlines 6 2026-05-13
SKW5633 - 6 2026-07-16
SKW5121 - 6 2026-07-17
SKW5016 - 6 2026-07-06
SKW4752 - 6 2026-07-11
SKW4674 SkyWest Airlines 6 2026-07-26
SKW6077 - 5 2026-07-12
SKW6058 SkyWest Airlines 5 2026-06-08
SKW5915 - 5 2026-07-16
SKW5865 SkyWest Airlines 5 2026-05-23
SKW5505 SkyWest Airlines 5 2026-06-05
SKW5136 SkyWest Airlines 5 2026-06-12
SKW5122 - 5 2026-07-20
SKW5117 SkyWest Airlines 5 2026-05-04
SKW5110 SkyWest Airlines 5 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5742 ASE → ORD Jul 26, 20:50 UTCJul 26, 21:30 UTC40m
2026-07-26 SKW4674 GEG → SFO Jul 26, 17:55 UTCJul 26, 18:20 UTC25m
2026-07-26 SKW4674 GEG → SFO Jul 26, 17:53 UTCJul 26, 18:38 UTC45m
2026-07-26 SKW4690 CRW → ORD Jul 26, 15:45 UTCJul 26, 16:15 UTC30m
2026-07-26 SKW510A DEN → GJT Jul 26, 13:55 UTCJul 26, 14:15 UTC20m
2026-07-26 SKW5093 RKS → DEN Jul 26, 11:30 UTCJul 26, 12:00 UTC30m
2026-07-26 SKW5051 ORD → LAF Jul 26, 03:30 UTCJul 26, 03:59 UTC29m
2026-07-26 SKW5051 ORD → LAF Jul 26, 03:25 UTCJul 26, 03:45 UTC20m
2026-07-26 SKW5103 ORD → JLN Jul 26, 00:25 UTCJul 26, 01:15 UTC50m
2026-07-25 SKW5103 ORD → JLN Jul 25, 21:55 UTCJul 25, 22:40 UTC45m
2026-07-25 SKW6078 ORD → PAH Jul 25, 18:20 UTCJul 25, 19:15 UTC55m
2026-07-25 SKW6078 ORD → PAH Jul 25, 14:00 UTCJul 25, 14:45 UTC45m
2026-07-25 SKW5137 HYS → DEN Jul 25, 12:00 UTCJul 25, 12:35 UTC35m
2026-07-25 SKW5137 HYS → DEN Jul 25, 11:49 UTCJul 25, 12:30 UTC41m
2026-07-25 SKW744C DEN → JLN Jul 25, 02:55 UTCJul 25, 03:25 UTC30m
2026-07-24 SKW5042 IAH → VCT Jul 24, 23:15 UTCJul 25, 01:35 UTC2h 20m
2026-07-24 SKW5116 DEN → RKS Jul 24, 21:00 UTCJul 24, 21:25 UTC25m
2026-07-24 SKW380F DEN → HYS Jul 24, 18:40 UTCJul 24, 19:05 UTC25m
2026-07-24 SKW380F DEN → HYS Jul 24, 18:33 UTCJul 24, 19:23 UTC50m
2026-07-24 SKW5095 EAU → ORD Jul 24, 16:20 UTCJul 24, 17:05 UTC45m
2026-07-24 SKW442L DEN → DDC Jul 24, 14:25 UTCJul 24, 14:55 UTC30m
2026-07-24 SKW442L DEN → DDC Jul 24, 14:18 UTCJul 24, 15:09 UTC51m
2026-07-24 SKW5063 ORD → CMX Jul 24, 11:55 UTCJul 24, 12:15 UTC20m
2026-07-24 SKW583X DEN → CYS Jul 24, 04:50 UTCJul 24, 05:15 UTC25m
2026-07-24 SKW5042 IAH → VCT Jul 24, 03:15 UTCJul 24, 03:55 UTC40m
2026-07-24 SKW453A DEN → HYS Jul 24, 01:39 UTCJul 24, 02:14 UTC35m
2026-07-24 SKW453A DEN → HYS Jul 24, 01:30 UTCJul 24, 02:00 UTC30m
2026-07-23 SKW5116 DEN → RKS Jul 23, 23:40 UTCJul 24, 00:25 UTC45m
2026-07-23 SKW5116 DEN → RKS Jul 23, 21:30 UTCJul 23, 22:30 UTC1h 0m
2026-07-23 SKW380F DEN → HYS Jul 23, 19:20 UTCJul 23, 19:40 UTC20m
2026-07-23 SKW5095 EAU → ORD Jul 23, 16:30 UTCJul 23, 17:15 UTC45m
2026-07-23 SKW442L DEN → DDC Jul 23, 14:35 UTCJul 23, 15:10 UTC35m
2026-07-23 SKW442L DEN → DDC Jul 23, 14:25 UTCJul 23, 15:22 UTC57m
2026-07-23 SKW4697 DCA → ORD Jul 23, 11:45 UTCJul 23, 12:10 UTC25m
2026-07-21 SKW741Y DEN → COS Jul 21, 05:30 UTCJul 21, 05:45 UTC15m
2026-07-21 SKW553U FOD → DEN Jul 21, 01:25 UTCJul 21, 02:55 UTC1h 30m
2026-07-21 SKW553U FOD → DEN Jul 21, 01:14 UTCJul 21, 02:49 UTC1h 35m
2026-07-20 SKW6076 DEN → ROW Jul 20, 23:25 UTCJul 21, 00:30 UTC1h 4m
2026-07-20 SKW5122 - Jul 20, 20:35 UTCJul 20, 21:30 UTC55m
2026-07-20 SKW5122 EAU → ORD Jul 20, 20:43 UTCJul 20, 21:11 UTC28m
2026-07-20 SKW702H - Jul 20, 18:55 UTCJul 20, 19:40 UTC45m
2026-07-20 SKW5036 MCW → ORD Jul 20, 15:25 UTCJul 20, 16:50 UTC1h 25m
2026-07-20 SKW5036 MCW → ORD Jul 20, 15:20 UTCJul 20, 16:32 UTC1h 12m
2026-07-20 SKW486F - Jul 20, 13:35 UTCJul 20, 14:40 UTC1h 5m
2026-07-20 SKW4639 ATW → ORD Jul 20, 11:43 UTCJul 20, 12:03 UTC20m
2026-07-20 SKW4639 ATW → ORD Jul 20, 11:25 UTCJul 20, 12:20 UTC55m
2026-07-19 SKW4772 ORD → ATW Jul 19, 23:50 UTCJul 20, 00:25 UTC35m
2026-07-19 SKW4718 - Jul 19, 20:25 UTCJul 19, 21:45 UTC1h 20m
2026-07-19 SKW5244 - Jul 19, 18:05 UTCJul 19, 19:20 UTC1h 15m
2026-07-19 SKW5244 ORD → LNK Jul 19, 18:11 UTCJul 19, 19:18 UTC1h 7m

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 N218PS page for operator, model, and routing details .

Mode-S A1D890 frequently asked

What is Mode-S code A1D890?
A1D890 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N218PS.
Where is Mode-S A1D890 registered?
Mode-S code A1D890 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 A1D890 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1D890, octal 50354220, decimal 10,606,736.
What flights does A1D890 operate?
Mode-S A1D890 has broadcast 20 distinct callsigns, including SKW5049, SKW5020, SKW5103, SKW4633, SKW6069.