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sensors Mode-S transponder

A22642

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N238AK · BOEING 737-900 · operated by ALASKA AIRLINES INC

Hex
A22642
Octal
50423102
Decimal
10,626,626
Country
US
Tail
N238AK
Type
B739
Broadcasting now · callsign ASA1521 · 34,000 ft
Flights observed
410
Distinct callsigns
20
Country
US
Last broadcast
25m ago

Current position

A22642 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A22642 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
ASA565 - 7 2026-07-02
ASA502 - 6 2026-07-05
ASA299 Alaska Airlines 5 2026-05-26
ASA777 Alaska Airlines 4 2026-06-08
ASA731 - 4 2026-07-06
ASA509 Alaska Airlines 4 2026-05-21
ASA424 Alaska Airlines 4 2026-05-21
ASA412 - 4 2026-07-08
ASA239 Alaska Airlines 4 2026-05-16
ASA1368 Alaska Airlines 4 2026-04-25
ASA779 - 3 2026-06-26
ASA720 - 3 2026-06-19
ASA625 Alaska Airlines 3 2026-06-14
ASA584 - 3 2026-04-13
ASA578 Alaska Airlines 3 2026-06-28
ASA576 Alaska Airlines 3 2026-07-06
ASA572 Alaska Airlines 3 2026-05-23
ASA540 Alaska Airlines 3 2026-05-31
ASA515 - 3 2026-06-26
ASA474 Alaska Airlines 3 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA1521 - Jul 14, 05:15 UTCJul 14, 06:30 UTC1h 15m
2026-07-13 ASA290 EWR → PDX Jul 13, 21:15 UTCJul 14, 02:20 UTC5h 5m
2026-07-13 ASA294 PDX → EWR Jul 13, 14:55 UTCJul 13, 19:45 UTC4h 50m
2026-07-12 ASA1610 - Jul 12, 23:40 UTCJul 13, 00:30 UTC50m
2026-07-12 ASA1610 LAX → SFO Jul 12, 23:40 UTCJul 13, 22:30 UTC22h 51m
2026-07-12 ASA1335 - Jul 12, 16:45 UTCJul 12, 20:20 UTC3h 35m
2026-07-11 ASA1335 - Jul 11, 22:35 UTCJul 12, 20:20 UTC21h 45m
2026-07-11 ASA1335 - Jul 11, 20:35 UTCJul 12, 20:20 UTC23h 45m
2026-07-11 ASA1334 - Jul 11, 19:40 UTCJul 12, 18:10 UTC22h 30m
2026-07-11 ASA717 - Jul 11, 14:35 UTCJul 11, 16:55 UTC2h 20m
2026-07-11 ASA1431 - Jul 11, 02:15 UTCJul 11, 04:25 UTC2h 10m
2026-07-10 ASA1312 PDX → SAN Jul 10, 22:45 UTCJul 11, 00:55 UTC2h 10m
2026-07-10 ASA235 - Jul 10, 20:15 UTCJul 10, 21:25 UTC1h 10m
2026-07-10 ASA570 LAS → SFO Jul 10, 17:40 UTCJul 10, 18:55 UTC1h 15m
2026-07-10 ASA718 - Jul 10, 14:45 UTCJul 10, 15:50 UTC1h 5m
2026-07-10 ASA628 SEA → SFO Jul 10, 03:40 UTCJul 10, 05:30 UTC1h 50m
2026-07-10 ASA628 SEA → SFO Jul 10, 03:40 UTCJul 10, 05:16 UTC1h 36m
2026-07-09 ASA734 - Jul 9, 23:00 UTCJul 10, 00:35 UTC1h 35m
2026-07-09 ASA734 SLC → SEA Jul 9, 22:59 UTCJul 10, 00:23 UTC1h 24m
2026-07-09 ASA733 SEA → SLC Jul 9, 20:15 UTCJul 9, 21:50 UTC1h 35m
2026-07-09 ASA733 SEA → SLC Jul 9, 20:11 UTCJul 9, 21:41 UTC1h 30m
2026-07-09 ASA640 TPA → SEA Jul 9, 13:25 UTCJul 9, 18:40 UTC5h 15m
2026-07-09 ASA639 SEA → TPA Jul 9, 06:50 UTCJul 9, 11:50 UTC5h 0m
2026-07-08 ASA412 - Jul 8, 22:20 UTCJul 9, 03:10 UTC4h 50m
2026-07-08 ASA412 - Jul 8, 16:55 UTCJul 8, 21:05 UTC4h 10m
2026-07-08 ASA1314 SJC → SEA Jul 8, 13:35 UTCJul 8, 15:15 UTC1h 40m
2026-07-08 ASA1310 SEA → SJC Jul 8, 04:25 UTCJul 8, 06:10 UTC1h 45m
2026-07-07 ASA216 - Jul 7, 22:00 UTCJul 8, 02:30 UTC4h 30m
2026-07-07 ASA216 SEA → CLE Jul 7, 16:25 UTCJul 7, 20:25 UTC4h 0m
2026-07-07 ASA75 ANC → SEA Jul 7, 10:44 UTCJul 7, 13:38 UTC2h 54m
2026-07-07 ASA75 ANC → SEA Jul 7, 10:35 UTCJul 7, 13:40 UTC3h 5m
2026-07-07 ASA1532 - Jul 7, 06:13 UTCJul 7, 08:50 UTC2h 37m
2026-07-07 ASA1532 PDX → ANC Jul 7, 05:45 UTCJul 7, 08:50 UTC3h 5m
2026-07-07 ASA1532 PHX → PDX Jul 7, 02:20 UTCJul 7, 04:35 UTC2h 15m
2026-07-06 ASA731 PDX → PHX Jul 6, 22:00 UTCJul 7, 00:20 UTC2h 20m
2026-07-06 ASA731 PDX → PHX Jul 6, 22:05 UTCJul 7, 00:17 UTC2h 12m
2026-07-06 ASA576 SEA → DFW Jul 6, 18:30 UTCJul 6, 20:30 UTC2h 0m
2026-07-06 ASA576 SEA → DFW Jul 6, 18:26 UTCJul 6, 20:29 UTC2h 3m
2026-07-06 ASA577 PDX → SAN Jul 6, 14:40 UTCJul 6, 16:50 UTC2h 10m
2026-07-06 ASA525 - Jul 6, 02:30 UTCJul 6, 03:40 UTC1h 10m
2026-07-06 ASA1610 LAX → SFO Jul 6, 00:20 UTCJul 6, 01:15 UTC55m
2026-07-05 ASA502 SEA → LAX Jul 5, 20:05 UTCJul 5, 22:25 UTC2h 20m
2026-07-05 ASA317 DEN → SEA Jul 5, 14:55 UTCJul 5, 17:25 UTC2h 30m
2026-07-04 ASA1809 PDX → DEN Jul 4, 21:35 UTCJul 4, 23:40 UTC2h 5m
2026-07-04 ASA621 SMF → PDX Jul 4, 18:55 UTCJul 4, 20:05 UTC1h 10m
2026-07-04 ASA485 PDX → SMF Jul 4, 15:20 UTCJul 4, 16:30 UTC1h 10m
2026-07-04 ASA649 BUR → PDX Jul 4, 01:20 UTCJul 4, 03:10 UTC1h 50m
2026-07-03 ASA1386 - Jul 3, 22:00 UTCJul 3, 23:50 UTC1h 50m
2026-07-03 ASA251 GEG → PDX Jul 3, 19:45 UTCJul 3, 20:30 UTC45m
2026-07-03 ASA250 PDX → GEG Jul 3, 17:45 UTCJul 3, 18:30 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 N238AK page for operator, model, and routing details .

Mode-S A22642 frequently asked

What is Mode-S code A22642?
A22642 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N238AK.
Where is Mode-S A22642 registered?
Mode-S code A22642 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 A22642 broadcasting right now?
Yes. Mode-S A22642 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A22642, octal 50423102, decimal 10,626,626.
What flights does A22642 operate?
Mode-S A22642 has broadcast 20 distinct callsigns, including ASA565, ASA502, ASA299, ASA777, ASA731.