Apparatus

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sensors Mode-S transponder

A2F584

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N290AK · BOEING 737-900 · operated by ALASKA AIRLINES INC

Hex
A2F584
Octal
50572604
Decimal
10,679,684
Country
US
Tail
N290AK
Type
B739
No current signal · last broadcast Jul 26, 18:10 UTC
Flights observed
458
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:10 UTC

Last known position

Most recent position reported by Mode-S A2F584.

Country allocation

The ICAO 24-bit address A2F584 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
ASA682 Alaska Airlines 7 2026-07-24
ASA617 - 6 2026-06-30
ASA62 - 5 2026-07-11
ASA269 Alaska Airlines 5 2026-07-23
ASA1330 - 5 2026-06-29
ASA756 - 4 2026-07-21
ASA723 - 4 2026-04-21
ASA526 - 4 2026-04-13
ASA515 - 4 2026-06-14
ASA514 Alaska Airlines 4 2026-06-14
ASA462 Alaska Airlines 4 2026-07-23
ASA432 Alaska Airlines 4 2026-04-21
ASA390 Alaska Airlines 4 2026-06-02
ASA364 Alaska Airlines 4 2026-05-27
ASA326 Alaska Airlines 4 2026-04-17
ASA302 Alaska Airlines 4 2026-04-30
ASA274 - 4 2026-07-23
ASA1601 Alaska Airlines 4 2026-07-21
ASA1540 - 4 2026-07-04
ASA1365 Alaska Airlines 4 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA9578 SEA → OKC Jul 26, 17:30 UTCJul 26, 18:00 UTC30m
2026-07-26 ASA9578 SEA → OKC Jul 26, 17:28 UTCJul 26, 17:49 UTC21m
2026-07-25 ASA1421 SNA → SEA Jul 25, 23:50 UTCJul 26, 03:45 UTC3h 55m
2026-07-25 ASA438 SEA → IAH Jul 25, 18:20 UTCJul 25, 22:10 UTC3h 50m
2026-07-25 ASA78 SEA → ANC Jul 25, 11:40 UTCJul 25, 16:35 UTC4h 55m
2026-07-25 ASA78 SEA → ANC Jul 25, 11:36 UTCJul 25, 16:23 UTC4h 47m
2026-07-25 ASA77 SFO → LAX Jul 25, 06:15 UTCJul 25, 10:05 UTC3h 50m
2026-07-25 ASA532 LAX → PDX Jul 25, 01:05 UTCJul 25, 04:30 UTC3h 25m
2026-07-24 ASA527 SNA → SEA Jul 24, 20:45 UTCJul 24, 23:25 UTC2h 40m
2026-07-24 ASA1468 SEA → LAX Jul 24, 18:00 UTCJul 24, 19:25 UTC1h 25m
2026-07-24 ASA682 SEA → DEN Jul 24, 14:40 UTCJul 24, 16:05 UTC1h 25m
2026-07-24 ASA1337 LAX → PVR Jul 24, 01:30 UTCJul 24, 07:15 UTC5h 45m
2026-07-24 ASA1337 LAX → PVR Jul 24, 01:29 UTCJul 24, 07:07 UTC5h 38m
2026-07-23 ASA219 SEA → BOS Jul 23, 19:05 UTCJul 23, 23:40 UTC4h 35m
2026-07-23 ASA274 CLE → SEA Jul 23, 12:20 UTCJul 23, 17:00 UTC4h 40m
2026-07-23 ASA269 SFO → ANC Jul 23, 06:55 UTCJul 23, 10:50 UTC3h 55m
2026-07-23 ASA269 SFO → ANC Jul 23, 06:53 UTCJul 23, 10:34 UTC3h 41m
2026-07-23 ASA462 SEA → CMH Jul 23, 03:50 UTCJul 23, 03:55 UTC5m
2026-07-22 ASA462 SEA → CMH Jul 22, 22:14 UTCJul 23, 03:33 UTC5h 19m
2026-07-22 ASA462 SEA → CMH Jul 22, 22:15 UTCJul 23, 03:55 UTC5h 40m
2026-07-22 ASA297 SAN → EWR Jul 22, 15:15 UTCJul 22, 19:55 UTC4h 40m
2026-07-22 ASA369 MCO → SFO Jul 22, 01:00 UTCJul 22, 03:25 UTC2h 25m
2026-07-21 ASA756 - Jul 21, 21:30 UTCJul 21, 23:25 UTC1h 55m
2026-07-21 ASA756 LAS → PDX Jul 21, 21:29 UTCJul 21, 23:24 UTC1h 55m
2026-07-21 ASA757 PDX → LAS Jul 21, 18:10 UTCJul 21, 20:05 UTC1h 55m
2026-07-21 ASA1629 LAS → PDX Jul 21, 14:25 UTCJul 21, 16:10 UTC1h 45m
2026-07-21 ASA468 - Jul 21, 05:15 UTCJul 21, 06:35 UTC1h 20m
2026-07-21 ASA1601 LAX → SFO Jul 21, 03:11 UTCJul 21, 03:42 UTC31m
2026-07-21 ASA1601 LAX → SFO Jul 21, 02:55 UTCJul 21, 04:00 UTC1h 5m
2026-07-20 ASA1406 LAX → ZLO Jul 20, 23:20 UTCJul 21, 01:09 UTC1h 49m
2026-07-20 ASA546 LAX → EWR Jul 20, 20:00 UTCJul 21, 01:20 UTC5h 20m
2026-07-20 ASA673 LAS → SFO Jul 20, 15:50 UTCJul 20, 18:15 UTC2h 25m
2026-07-20 ASA1342 SEA → GEG Jul 20, 04:00 UTCJul 20, 04:35 UTC35m
2026-07-19 ASA216 SEA → CLE Jul 19, 21:55 UTCJul 20, 02:35 UTC4h 40m
2026-07-19 ASA216 SEA → CLE Jul 19, 16:35 UTCJul 19, 20:15 UTC3h 40m
2026-07-19 ASA453 IAH → SEA Jul 19, 11:10 UTCJul 19, 15:05 UTC3h 55m
2026-07-19 ASA1573 - Jul 19, 01:55 UTCJul 19, 05:45 UTC3h 50m
2026-07-18 ASA439 - Jul 18, 20:00 UTCJul 18, 23:55 UTC3h 55m
2026-07-18 ASA1420 - Jul 18, 14:15 UTCJul 18, 18:05 UTC3h 50m
2026-07-17 ASA1386 PDX → PDX Jul 17, 22:10 UTCJul 17, 22:40 UTC30m
2026-07-17 ASA1567 ANC → PDX Jul 17, 17:30 UTCJul 17, 20:50 UTC3h 20m
2026-07-17 ASA1899 LAX → ANC Jul 17, 02:39 UTCJul 17, 07:25 UTC4h 45m
2026-07-16 ASA534 - Jul 16, 23:25 UTCJul 17, 00:55 UTC1h 30m
2026-07-16 ASA437 - Jul 16, 18:25 UTCJul 16, 18:59 UTC35m
2026-07-16 ASA437 LAX → PVR Jul 16, 18:24 UTCJul 16, 21:06 UTC2h 42m
2026-07-16 ASA581 PDX → LAX Jul 16, 14:17 UTCJul 16, 16:09 UTC1h 52m
2026-07-16 ASA581 PDX → LAX Jul 16, 14:20 UTCJul 16, 16:25 UTC2h 5m
2026-07-16 ASA498 SEA → PDX Jul 16, 05:00 UTCJul 16, 05:35 UTC35m
2026-07-16 ASA758 - Jul 16, 01:00 UTCJul 16, 02:20 UTC1h 20m
2026-07-15 ASA236 PDX → SFO Jul 15, 22:00 UTCJul 15, 23:35 UTC1h 35m

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 N290AK page for operator, model, and routing details .

Mode-S A2F584 frequently asked

What is Mode-S code A2F584?
A2F584 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N290AK.
Where is Mode-S A2F584 registered?
Mode-S code A2F584 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 A2F584 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2F584, octal 50572604, decimal 10,679,684.
What flights does A2F584 operate?
Mode-S A2F584 has broadcast 20 distinct callsigns, including ASA682, ASA617, ASA62, ASA269, ASA1330.