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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 3h ago
Flights observed
574
Distinct callsigns
20
Country
US
Last broadcast
3h ago

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
SKW6069 - 6 2026-07-05
SKW6068 SkyWest Airlines 6 2026-05-13
SKW5020 SkyWest Airlines 6 2026-07-02
SKW5016 - 6 2026-07-06
SKW4752 - 6 2026-07-11
SKW4633 - 6 2026-07-13
SKW6077 - 5 2026-07-12
SKW6058 SkyWest Airlines 5 2026-06-08
SKW5865 SkyWest Airlines 5 2026-05-23
SKW5505 SkyWest Airlines 5 2026-06-05
SKW5136 SkyWest Airlines 5 2026-06-12
SKW5117 SkyWest Airlines 5 2026-05-04
SKW5110 SkyWest Airlines 5 2026-06-12
SKW5103 SkyWest Airlines 5 2026-05-27
SKW5070 - 5 2026-07-02
SKW4784 - 5 2026-07-14
SKW4700 - 5 2026-06-19
SKW4677 SkyWest Airlines 5 2026-05-12
SKW730V SkyWest Airlines 4 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW4784 ORD → CRW Jul 14, 02:28 UTCJul 14, 03:19 UTC51m
2026-07-14 SKW4784 - Jul 14, 02:10 UTCJul 14, 03:20 UTC1h 10m
2026-07-13 SKW4633 - Jul 13, 22:55 UTCJul 13, 23:40 UTC45m
2026-07-13 SKW4633 ATW → ORD Jul 13, 22:41 UTCJul 13, 23:22 UTC41m
2026-07-13 SKW5633 - Jul 13, 21:15 UTCJul 13, 21:50 UTC35m
2026-07-13 SKW5915 - Jul 13, 18:20 UTCJul 13, 18:55 UTC35m
2026-07-13 SKW5915 MBS → ORD Jul 13, 18:15 UTCJul 13, 18:44 UTC29m
2026-07-13 SKW5344 - Jul 13, 16:25 UTCJul 13, 17:05 UTC40m
2026-07-13 SKW5344 ORD → MBS Jul 13, 16:18 UTCJul 13, 17:00 UTC42m
2026-07-13 SKW5402 - Jul 13, 14:10 UTCJul 13, 14:45 UTC35m
2026-07-13 SKW5402 MKE → ORD Jul 13, 14:07 UTCJul 13, 14:23 UTC16m
2026-07-13 SKW5581 - Jul 13, 12:40 UTCJul 13, 13:00 UTC20m
2026-07-13 SKW5043 LAF → ORD Jul 13, 10:35 UTCJul 13, 11:10 UTC35m
2026-07-13 SKW5048 ORD → LAF Jul 13, 03:22 UTCJul 13, 03:33 UTC11m
2026-07-13 SKW5048 - Jul 13, 03:05 UTCJul 13, 03:30 UTC25m
2026-07-13 SKW5082 CMX → ORD Jul 13, 00:01 UTCJul 13, 00:46 UTC45m
2026-07-12 SKW489J - Jul 12, 22:10 UTCJul 12, 22:55 UTC45m
2026-07-12 SKW6077 - Jul 12, 19:40 UTCJul 12, 20:40 UTC1h 0m
2026-07-12 SKW546J ORD → CIU Jul 12, 17:38 UTCJul 12, 18:24 UTC46m
2026-07-12 SKW546J - Jul 12, 17:20 UTCJul 12, 17:55 UTC35m
2026-07-12 SKW5981 - Jul 12, 15:05 UTCJul 12, 15:45 UTC40m
2026-07-12 SKW5981 FWA → ORD Jul 12, 15:09 UTCJul 12, 15:27 UTC18m
2026-07-11 SKW4630 - Jul 11, 21:15 UTCJul 11, 21:35 UTC20m
2026-07-11 SKW4752 - Jul 11, 20:05 UTCJul 11, 20:15 UTC10m
2026-07-11 SKW4752 CAK → ORD Jul 11, 18:55 UTCJul 11, 19:49 UTC54m
2026-07-11 SKW4752 - Jul 11, 19:05 UTCJul 11, 20:00 UTC55m
2026-07-11 SKW519Y ORD → CAK Jul 11, 17:05 UTCJul 11, 18:05 UTC1h 0m
2026-07-11 SKW5194 - Jul 11, 15:25 UTCJul 11, 15:50 UTC25m
2026-07-11 SKW5194 MKE → ORD Jul 11, 14:43 UTCJul 11, 15:40 UTC57m
2026-07-11 SKW478V - Jul 11, 01:10 UTCJul 11, 01:30 UTC20m
2026-07-10 SKW5034 LNS → ORD Jul 10, 19:05 UTCJul 10, 21:07 UTC2h 2m
2026-07-10 SKW5034 - Jul 10, 19:30 UTCJul 10, 21:20 UTC1h 50m
2026-07-10 SKW5075 - Jul 10, 16:25 UTCJul 10, 17:55 UTC1h 30m
2026-07-10 SKW5075 ORD → LNS Jul 10, 16:38 UTCJul 10, 17:49 UTC1h 11m
2026-07-10 SKW4639 - Jul 10, 11:45 UTCJul 10, 12:45 UTC1h 0m
2026-07-10 SKW4639 ATW → ORD Jul 10, 11:43 UTCJul 10, 12:23 UTC40m
2026-07-09 SKW4772 ORD → ATW Jul 9, 23:20 UTCJul 9, 23:50 UTC30m
2026-07-09 SKW6077 - Jul 9, 20:25 UTCJul 9, 21:15 UTC50m
2026-07-09 SKW6077 CIU → ORD Jul 9, 20:21 UTCJul 9, 21:08 UTC47m
2026-07-09 SKW546J - Jul 9, 18:20 UTCJul 9, 19:00 UTC40m
2026-07-09 SKW5448 - Jul 9, 15:10 UTCJul 9, 16:50 UTC1h 40m
2026-07-09 SKW4789 ORD → FAR Jul 9, 03:10 UTCJul 9, 04:40 UTC1h 30m
2026-07-09 SKW4789 ORD → FAR Jul 9, 03:08 UTCJul 9, 04:32 UTC1h 24m
2026-07-09 SKW4681 ORD → ORD Jul 9, 01:15 UTCJul 9, 01:30 UTC15m
2026-07-09 SKW4681 - Jul 9, 00:35 UTCJul 9, 01:30 UTC55m
2026-07-09 SKW4681 GRB → ORD Jul 9, 00:11 UTCJul 9, 00:59 UTC48m
2026-07-08 SKW5907 - Jul 8, 21:10 UTCJul 8, 21:55 UTC45m
2026-07-08 SKW5907 ORD → GRB Jul 8, 21:12 UTCJul 8, 21:49 UTC37m
2026-07-08 SKW5213 CAK → ORD Jul 8, 17:05 UTCJul 8, 18:10 UTC1h 5m
2026-07-08 SKW5210 - Jul 8, 15:15 UTCJul 8, 16:00 UTC45m

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 3h ago.
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, SKW6069, SKW6068, SKW5020, SKW5016.