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sensors Mode-S transponder

AD9642

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N975AK · BOEING 737 MAX 9 · operated by ALASKA AIRLINES INC

Hex
AD9642
Octal
53313102
Decimal
11,376,194
Country
US
Tail
N975AK
Type
B39M
Broadcasting now · callsign ASA490 · 33,000 ft
Flights observed
415
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Current position

AD9642 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD9642 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
ASA645 Alaska Airlines 7 2026-07-25
ASA535 - 7 2026-07-13
ASA50 - 6 2026-07-15
ASA49 - 5 2026-07-15
ASA83 - 4 2026-07-14
ASA748 Alaska Airlines 4 2026-05-30
ASA719 - 4 2026-06-15
ASA673 Alaska Airlines 4 2026-06-11
ASA555 Alaska Airlines 4 2026-04-20
ASA513 - 4 2026-06-29
ASA422 Alaska Airlines 4 2026-07-24
ASA413 Alaska Airlines 4 2026-04-20
ASA405 - 4 2026-07-12
ASA396 Alaska Airlines 4 2026-06-30
ASA268 Alaska Airlines 4 2026-05-08
ASA172 Alaska Airlines 4 2026-04-17
ASA1346 Alaska Airlines 4 2026-07-25
ASA9661 - 3 2026-07-15
ASA644 Alaska Airlines 3 2026-07-10
ASA582 Alaska Airlines 3 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA222 SAN → AUS Jul 26, 21:35 UTCJul 26, 21:40 UTC5m
2026-07-26 ASA222 SAN → AUS Jul 26, 16:30 UTCJul 26, 17:05 UTC35m
2026-07-26 ASA1412 SJD → SEA Jul 26, 12:20 UTCJul 26, 13:15 UTC55m
2026-07-26 ASA1412 SJD → SEA Jul 26, 08:30 UTCJul 26, 08:45 UTC15m
2026-07-25 ASA94 ANC → SEA Jul 25, 23:37 UTCJul 26, 04:48 UTC5h 11m
2026-07-25 ASA94 ANC → SEA Jul 25, 23:25 UTCJul 26, 04:50 UTC5h 25m
2026-07-25 ASA1346 SAN → ZIH Jul 25, 19:05 UTCJul 25, 21:30 UTC2h 25m
2026-07-25 ASA645 PHX → SEA Jul 25, 14:50 UTCJul 25, 17:25 UTC2h 35m
2026-07-25 ASA632 SEA → PHX Jul 25, 03:35 UTCJul 25, 06:10 UTC2h 35m
2026-07-24 ASA503 LAX → SEA Jul 24, 21:45 UTCJul 25, 01:45 UTC4h 0m
2026-07-24 ASA422 SEA → SFO Jul 24, 16:40 UTCJul 24, 20:20 UTC3h 40m
2026-07-24 ASA422 SEA → SFO Jul 24, 16:33 UTCJul 24, 20:04 UTC3h 31m
2026-07-24 ASA499 PDX → SEA Jul 24, 13:25 UTCJul 24, 14:00 UTC35m
2026-07-24 ASA779 LAS → PDX Jul 24, 02:45 UTCJul 24, 04:45 UTC2h 0m
2026-07-24 ASA779 LAS → PDX Jul 24, 02:44 UTCJul 24, 04:49 UTC2h 5m
2026-07-23 ASA776 LAS → SFO Jul 23, 23:50 UTCJul 24, 01:05 UTC1h 15m
2026-07-23 ASA41 MCO → SFO Jul 23, 16:40 UTCJul 23, 22:09 UTC5h 29m
2026-07-23 ASA41 MCO → SFO Jul 23, 16:40 UTCJul 23, 22:20 UTC5h 40m
2026-07-23 ASA211 CUN → SEA Jul 23, 04:50 UTCJul 23, 09:35 UTC4h 45m
2026-07-23 ASA791 EWR → SEA Jul 23, 01:25 UTCJul 23, 03:15 UTC1h 50m
2026-07-22 ASA618 LAS → SEA Jul 22, 20:05 UTCJul 22, 23:50 UTC3h 45m
2026-07-22 ASA618 LAS → SEA Jul 22, 15:20 UTCJul 22, 18:35 UTC3h 15m
2026-07-22 ASA461 ANC → FAI Jul 22, 03:55 UTCJul 22, 13:40 UTC9h 45m
2026-07-22 ASA214 IAD → LAX Jul 22, 00:00 UTCJul 22, 01:35 UTC1h 35m
2026-07-21 ASA92 - Jul 21, 21:20 UTCJul 21, 22:40 UTC1h 20m
2026-07-20 ASA462 SEA → CMH Jul 20, 00:38 UTCJul 20, 05:34 UTC4h 56m
2026-07-20 ASA462 SEA → CMH Jul 20, 00:20 UTCJul 20, 05:50 UTC5h 30m
2026-07-19 ASA9261 LAS → SEA Jul 19, 21:45 UTCJul 19, 22:05 UTC20m
2026-07-19 ASA9261 LAS → SEA Jul 19, 16:35 UTCJul 19, 18:55 UTC2h 20m
2026-07-18 ASA233 - Jul 18, 17:15 UTCJul 18, 22:45 UTC5h 30m
2026-07-18 ASA1620 - Jul 18, 13:35 UTCJul 18, 14:30 UTC55m
2026-07-18 ASA404 KOA → SFO Jul 18, 02:39 UTCJul 18, 07:07 UTC4h 28m
2026-07-18 ASA404 - Jul 18, 02:35 UTCJul 18, 02:45 UTC10m
2026-07-18 ASA204 LAX → SFO Jul 18, 01:00 UTCJul 18, 01:15 UTC15m
2026-07-17 ASA204 LAX → SFO Jul 17, 19:55 UTCJul 17, 20:29 UTC35m
2026-07-17 ASA204 LAX → SFO Jul 17, 19:50 UTCJul 18, 01:15 UTC5h 25m
2026-07-17 ASA344 - Jul 17, 13:45 UTCJul 17, 18:00 UTC4h 15m
2026-07-17 ASA344 DTW → SEA Jul 17, 13:40 UTCJul 17, 17:53 UTC4h 13m
2026-07-17 ASA343 SEA → DTW Jul 17, 07:35 UTCJul 17, 11:15 UTC3h 40m
2026-07-16 ASA305 HWO → SEA Jul 16, 23:25 UTCJul 17, 05:04 UTC5h 40m
2026-07-16 ASA305 SEA → MIA Jul 16, 16:00 UTCJul 16, 21:25 UTC5h 25m
2026-07-16 ASA499 PDX → SEA Jul 16, 13:34 UTCJul 16, 14:05 UTC30m
2026-07-16 ASA499 PDX → SEA Jul 16, 13:39 UTCJul 16, 13:56 UTC17m
2026-07-16 ASA525 - Jul 16, 02:25 UTCJul 16, 03:35 UTC1h 10m
2026-07-15 ASA1561 - Jul 15, 20:50 UTCJul 16, 01:05 UTC4h 15m
2026-07-15 ASA9661 - Jul 15, 15:05 UTCJul 15, 19:15 UTC4h 10m
2026-07-15 ASA50 - Jul 15, 12:10 UTCJul 15, 13:05 UTC55m
2026-07-15 ASA49 - Jul 15, 05:40 UTCJul 15, 06:05 UTC25m
2026-07-15 ASA49 - Jul 15, 00:10 UTCJul 15, 01:05 UTC55m
2026-07-14 ASA83 SEA → ANC Jul 14, 19:05 UTCJul 14, 22:15 UTC3h 10m

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 N975AK page for operator, model, and routing details .

Mode-S AD9642 frequently asked

What is Mode-S code AD9642?
AD9642 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N975AK.
Where is Mode-S AD9642 registered?
Mode-S code AD9642 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 AD9642 broadcasting right now?
Yes. Mode-S AD9642 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD9642, octal 53313102, decimal 11,376,194.
What flights does AD9642 operate?
Mode-S AD9642 has broadcast 20 distinct callsigns, including ASA645, ASA535, ASA50, ASA49, ASA83.