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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
No current signal · last broadcast 4h ago
Flights observed
363
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S AD9642.

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
ASA535 - 7 2026-07-13
ASA645 Alaska Airlines 5 2026-07-10
ASA50 - 5 2026-07-11
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
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
ASA644 Alaska Airlines 3 2026-07-10
ASA582 Alaska Airlines 3 2026-06-18
ASA538 - 3 2026-06-13
ASA49 - 3 2026-07-11
ASA483 Alaska Airlines 3 2026-05-09
ASA446 Alaska Airlines 3 2026-07-09
ASA439 - 3 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA632 - Jul 14, 03:25 UTCJul 14, 05:55 UTC2h 30m
2026-07-13 ASA535 DEN → SEA Jul 13, 23:00 UTCJul 14, 01:15 UTC2h 15m
2026-07-13 ASA535 SEA → DEN Jul 13, 19:05 UTCJul 13, 21:15 UTC2h 10m
2026-07-13 ASA587 - Jul 13, 13:10 UTCJul 13, 16:45 UTC3h 35m
2026-07-13 ASA1724 - Jul 13, 05:31 UTCJul 13, 11:10 UTC5h 40m
2026-07-13 ASA225 SEA → ANC Jul 13, 01:05 UTCJul 13, 04:10 UTC3h 5m
2026-07-12 ASA405 OKC → SEA Jul 12, 20:05 UTCJul 12, 23:30 UTC3h 25m
2026-07-12 ASA405 SEA → OKC Jul 12, 15:50 UTCJul 12, 18:50 UTC3h 0m
2026-07-12 ASA75 ANC → SEA Jul 12, 10:40 UTCJul 12, 13:40 UTC3h 0m
2026-07-12 ASA1560 SEA → ANC Jul 12, 05:10 UTCJul 12, 08:10 UTC3h 0m
2026-07-11 ASA226 - Jul 11, 22:55 UTCJul 12, 02:01 UTC3h 5m
2026-07-11 ASA226 ANC → SEA Jul 11, 22:55 UTCJul 12, 01:55 UTC3h 0m
2026-07-11 ASA9661 - Jul 11, 16:05 UTCJul 11, 19:40 UTC3h 35m
2026-07-11 ASA50 - Jul 11, 12:05 UTCJul 11, 12:50 UTC45m
2026-07-11 ASA50 - Jul 11, 07:25 UTCJul 11, 07:35 UTC10m
2026-07-11 ASA49 - Jul 11, 05:10 UTCJul 11, 05:25 UTC15m
2026-07-11 ASA49 - Jul 11, 00:05 UTCJul 11, 00:55 UTC50m
2026-07-10 ASA83 SEA → ANC Jul 10, 19:20 UTCJul 10, 22:20 UTC3h 0m
2026-07-10 ASA645 PHX → SEA Jul 10, 14:35 UTCJul 10, 17:15 UTC2h 40m
2026-07-10 ASA644 SEA → PHX Jul 10, 04:30 UTCJul 10, 06:55 UTC2h 25m
2026-07-09 ASA446 PHL → SEA Jul 9, 22:55 UTCJul 10, 00:50 UTC1h 55m
2026-07-09 ASA208 - Jul 9, 19:50 UTCJul 9, 21:50 UTC2h 0m
2026-07-09 ASA208 SEA → JNU Jul 9, 19:49 UTCJul 9, 21:59 UTC2h 10m
2026-07-07 ASA9801 PHX → SEA Jul 7, 22:55 UTCJul 8, 01:35 UTC2h 40m
2026-07-06 ASA746 PDX → PHX Jul 6, 01:05 UTCJul 6, 03:25 UTC2h 20m
2026-07-05 ASA267 ANC → PDX Jul 5, 20:00 UTCJul 5, 23:15 UTC3h 15m
2026-07-05 ASA1541 MSP → ANC Jul 5, 12:55 UTCJul 5, 18:20 UTC5h 25m
2026-07-05 ASA1540 ANC → MSP Jul 5, 06:00 UTCJul 5, 10:50 UTC4h 50m
2026-07-04 ASA257 ANC → ANC Jul 4, 20:10 UTCJul 5, 02:40 UTC6h 30m
2026-07-04 ASA432 DEN → ANC Jul 4, 13:50 UTCJul 4, 19:00 UTC5h 10m
2026-07-04 ASA1627 PDX → DEN Jul 4, 01:15 UTCJul 4, 03:25 UTC2h 10m
2026-07-03 ASA1600 SFO → LAS Jul 3, 22:15 UTCJul 3, 23:25 UTC1h 10m
2026-07-03 ASA1428 SFO → SJD Jul 3, 19:15 UTCJul 3, 20:30 UTC1h 15m
2026-07-03 ASA1428 SFO → SJD Jul 3, 19:14 UTCJul 3, 20:31 UTC1h 17m
2026-07-03 ASA299 EWR → SEA Jul 3, 11:50 UTCJul 3, 17:10 UTC5h 20m
2026-07-03 ASA1631 SFO → EWR Jul 3, 04:45 UTCJul 3, 09:40 UTC4h 55m
2026-07-03 ASA649 BUR → PDX Jul 3, 01:25 UTCJul 3, 03:15 UTC1h 50m
2026-07-02 ASA1386 PDX → BUR Jul 2, 22:00 UTCJul 2, 23:50 UTC1h 50m
2026-07-02 ASA576 SEA → DFW Jul 2, 18:30 UTCJul 2, 20:35 UTC2h 5m
2026-07-02 ASA577 PDX → SAN Jul 2, 14:45 UTCJul 2, 17:00 UTC2h 15m
2026-07-02 ASA1392 - Jul 2, 01:15 UTCJul 2, 03:20 UTC2h 5m
2026-07-01 ASA1447 ORD → SAN Jul 1, 19:45 UTCJul 1, 23:40 UTC3h 55m
2026-07-01 ASA1446 CUN → LAX Jul 1, 17:45 UTCJul 1, 17:55 UTC10m
2026-07-01 ASA1446 CUN → LAX Jul 1, 14:30 UTCJul 1, 17:55 UTC3h 25m
2026-07-01 ASA1446 CUN → LAX Jul 1, 14:30 UTCJul 1, 17:30 UTC3h 0m
2026-06-30 ASA397 - Jun 30, 23:30 UTCJul 1, 04:00 UTC4h 30m
2026-06-30 ASA396 PDX → SJC Jun 30, 17:25 UTCJun 30, 22:00 UTC4h 35m
2026-06-30 ASA1680 SMF → SAN Jun 30, 14:52 UTCJun 30, 15:46 UTC54m
2026-06-30 ASA1621 SAN → SMF Jun 30, 05:10 UTCJun 30, 06:22 UTC1h 12m
2026-06-30 ASA1388 SEA → SAN Jun 30, 01:45 UTCJun 30, 04:00 UTC2h 15m

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?
No active broadcast right now. Last signal was 4h ago.
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 ASA535, ASA645, ASA50, ASA748, ASA719.