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 1h ago
Flights observed
401
Distinct callsigns
20
Country
US
Last broadcast
1h ago

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 - 6 2026-06-23
ASA617 - 6 2026-06-30
ASA62 - 5 2026-07-11
ASA1330 - 5 2026-06-29
ASA723 - 4 2026-04-21
ASA526 - 4 2026-04-13
ASA515 - 4 2026-06-14
ASA514 Alaska Airlines 4 2026-06-14
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
ASA1540 - 4 2026-07-04
ASA1365 Alaska Airlines 4 2026-06-03
ASA95 Alaska Airlines 3 2026-06-06
ASA767 - 3 2026-07-04
ASA753 Alaska Airlines 3 2026-05-19
ASA737 Alaska Airlines 3 2026-05-19
ASA698 Alaska Airlines 3 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ASA462 - Jul 13, 23:00 UTCJul 14, 04:10 UTC5h 10m
2026-07-13 ASA297 - Jul 13, 16:15 UTCJul 13, 21:20 UTC5h 5m
2026-07-13 ASA1388 SEA → SAN Jul 13, 01:35 UTCJul 13, 04:10 UTC2h 35m
2026-07-13 ASA1388 SEA → SAN Jul 13, 01:34 UTCJul 13, 04:04 UTC2h 30m
2026-07-12 ASA585 - Jul 12, 21:35 UTCJul 12, 23:30 UTC1h 55m
2026-07-12 ASA1367 SEA → LAX Jul 12, 17:30 UTCJul 12, 19:55 UTC2h 25m
2026-07-12 ASA1367 SEA → LAX Jul 12, 17:28 UTCJul 12, 19:45 UTC2h 17m
2026-07-12 ASA491 OAK → SEA Jul 12, 13:45 UTCJul 12, 15:15 UTC1h 30m
2026-07-12 ASA706 SEA → OAK Jul 12, 01:00 UTCJul 12, 02:50 UTC1h 50m
2026-07-11 ASA62 - Jul 11, 21:35 UTCJul 11, 23:05 UTC1h 30m
2026-07-11 ASA62 KTN → SEA Jul 11, 21:42 UTCJul 11, 23:10 UTC1h 28m
2026-07-11 ASA62 - Jul 11, 19:50 UTCJul 11, 20:15 UTC25m
2026-07-11 ASA62 - Jul 11, 18:00 UTCJul 11, 18:20 UTC20m
2026-07-11 ASA62 - Jul 11, 15:25 UTCJul 11, 16:40 UTC1h 15m
2026-07-11 ASA212 SFO → ANC Jul 11, 03:10 UTCJul 11, 07:25 UTC4h 15m
2026-07-11 ASA1385 SEA → SFO Jul 11, 00:00 UTCJul 11, 01:45 UTC1h 45m
2026-07-10 ASA596 - Jul 10, 20:35 UTCJul 10, 22:05 UTC1h 30m
2026-07-10 ASA653 SFO → ZIH Jul 10, 17:45 UTCJul 10, 19:10 UTC1h 25m
2026-07-10 ASA296 LAX → SEA Jul 10, 00:40 UTCJul 10, 01:45 UTC1h 5m
2026-07-09 ASA342 - Jul 9, 22:25 UTCJul 9, 23:20 UTC55m
2026-07-09 ASA562 BUR → PDX Jul 9, 14:50 UTCJul 9, 16:40 UTC1h 50m
2026-07-09 ASA559 PDX → BUR Jul 9, 01:10 UTCJul 9, 03:00 UTC1h 50m
2026-07-08 ASA229 - Jul 8, 22:40 UTCJul 8, 23:35 UTC55m
2026-07-08 ASA229 BOI → PDX Jul 8, 22:40 UTCJul 8, 23:36 UTC56m
2026-07-08 ASA441 MSY → SEA Jul 8, 20:00 UTCJul 8, 20:55 UTC55m
2026-07-08 ASA441 MSY → SEA Jul 8, 19:58 UTCJul 8, 20:56 UTC58m
2026-07-08 ASA47 ORD → ANC Jul 8, 15:00 UTCJul 8, 17:55 UTC2h 55m
2026-07-08 ASA669 SEA → ANC Jul 8, 06:35 UTCJul 8, 09:40 UTC3h 5m
2026-07-07 ASA787 - Jul 7, 23:00 UTCJul 8, 04:20 UTC5h 20m
2026-07-07 ASA787 - Jul 7, 16:10 UTCJul 7, 20:50 UTC4h 40m
2026-07-07 ASA282 - Jul 7, 04:05 UTCJul 7, 05:35 UTC1h 30m
2026-07-07 ASA393 - Jul 7, 01:15 UTCJul 7, 02:55 UTC1h 40m
2026-07-06 ASA555 MSP → SEA Jul 6, 20:20 UTCJul 6, 23:40 UTC3h 20m
2026-07-06 ASA555 SEA → MSP Jul 6, 16:05 UTCJul 6, 18:50 UTC2h 45m
2026-07-06 ASA647 - Jul 6, 01:15 UTCJul 6, 03:00 UTC1h 45m
2026-07-06 ASA647 STL → SEA Jul 6, 01:12 UTCJul 6, 04:56 UTC3h 44m
2026-07-05 ASA647 SEA → STL Jul 5, 20:25 UTCJul 5, 23:50 UTC3h 25m
2026-07-05 ASA215 AUS → SEA Jul 5, 13:50 UTCJul 5, 17:50 UTC4h 0m
2026-07-05 ASA1370 PDX → AUS Jul 5, 00:55 UTCJul 5, 04:25 UTC3h 30m
2026-07-04 ASA267 ANC → PDX Jul 4, 20:05 UTCJul 4, 23:20 UTC3h 15m
2026-07-04 ASA1541 MSP → ANC Jul 4, 12:55 UTCJul 4, 18:05 UTC5h 10m
2026-07-04 ASA1540 ANC → MSP Jul 4, 05:55 UTCJul 4, 10:55 UTC5h 0m
2026-07-04 ASA767 SEA → ANC Jul 4, 01:20 UTCJul 4, 04:30 UTC3h 10m
2026-07-03 ASA1338 SFO → SEA Jul 3, 14:20 UTCJul 3, 22:35 UTC8h 15m
2026-07-03 ASA1601 LAX → SFO Jul 3, 03:05 UTCJul 3, 04:10 UTC1h 5m
2026-07-03 ASA1601 LAX → SFO Jul 3, 03:10 UTCJul 3, 03:56 UTC46m
2026-07-02 ASA1406 - Jul 2, 19:50 UTCJul 3, 00:55 UTC5h 5m
2026-07-02 ASA673 GEG → SAN Jul 2, 15:20 UTCJul 2, 17:45 UTC2h 25m
2026-07-02 ASA1614 LAX → GEG Jul 2, 03:20 UTCJul 2, 05:20 UTC2h 0m
2026-07-01 ASA1441 SEA → BOS Jul 1, 21:34 UTCJul 2, 00:41 UTC3h 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 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 1h ago.
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, ASA1330, ASA723.