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sensors Mode-S transponder

AAF831

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N806AK · operated by ALASKA AIRLINES INC

Hex
AAF831
Octal
52574061
Decimal
11,204,657
Country
US
Tail
N806AK
Type
B38M
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
396
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S AAF831.

Country allocation

The ICAO 24-bit address AAF831 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
ASA1354 - 17 2026-07-17
ASA1353 - 15 2026-07-17
ASA234 - 7 2026-07-02
ASA696 - 6 2026-07-16
ASA1452 Alaska Airlines 6 2026-07-24
ASA760 - 5 2026-06-18
ASA750 Alaska Airlines 5 2026-07-22
ASA7 Alaska Airlines 5 2026-07-19
ASA561 Alaska Airlines 5 2026-04-20
ASA504 Alaska Airlines 5 2026-04-19
ASA495 Alaska Airlines 5 2026-05-17
ASA8 Alaska Airlines 4 2026-07-18
ASA718 Alaska Airlines 4 2026-05-05
ASA631 Alaska Airlines 4 2026-06-19
ASA548 Alaska Airlines 4 2026-06-06
ASA482 - 4 2026-07-16
ASA1417 Alaska Airlines 4 2026-07-24
ASA790 Alaska Airlines 3 2026-04-29
ASA735 Alaska Airlines 3 2026-05-05
ASA588 Alaska Airlines 3 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA659 LAX → SFO Jul 26, 21:50 UTCJul 26, 22:15 UTC25m
2026-07-26 ASA338 SEA → SJC Jul 26, 13:15 UTCJul 26, 19:05 UTC5h 50m
2026-07-26 ASA1501 SEA → OGG Jul 26, 04:25 UTCJul 26, 10:55 UTC6h 31m
2026-07-25 ASA99 SEA → ANC Jul 25, 23:20 UTCJul 26, 02:15 UTC2h 55m
2026-07-25 ASA654 SEA → ABQ Jul 25, 19:20 UTCJul 25, 21:20 UTC2h 0m
2026-07-25 ASA1364 PDX → SJD Jul 25, 15:45 UTCJul 25, 18:00 UTC2h 15m
2026-07-25 ASA347 FLL → SFO Jul 25, 03:15 UTCJul 25, 05:10 UTC1h 55m
2026-07-24 ASA1452 SJD → SFO Jul 24, 21:10 UTCJul 25, 01:55 UTC4h 45m
2026-07-24 ASA1430 LAX → SJD Jul 24, 13:20 UTCJul 24, 19:45 UTC6h 25m
2026-07-24 ASA1417 GDL → SJC Jul 24, 01:30 UTCJul 24, 03:20 UTC1h 50m
2026-07-23 ASA1417 GDL → SJC Jul 23, 21:55 UTCJul 23, 22:10 UTC15m
2026-07-23 ASA552 LAX → SEA Jul 23, 14:20 UTCJul 23, 20:00 UTC5h 40m
2026-07-23 ASA1408 SJC → GDL Jul 23, 02:45 UTCJul 23, 05:05 UTC2h 20m
2026-07-23 ASA430 DEN → PDX Jul 23, 00:50 UTCJul 23, 01:20 UTC30m
2026-07-22 ASA712 PDX → LAS Jul 22, 21:15 UTCJul 22, 23:10 UTC1h 55m
2026-07-22 ASA588 LAS → SFO Jul 22, 17:50 UTCJul 22, 19:55 UTC2h 5m
2026-07-22 ASA750 SNA → PDX Jul 22, 14:20 UTCJul 22, 16:20 UTC2h 0m
2026-07-22 ASA518 SEA → SLC Jul 22, 03:10 UTCJul 22, 05:25 UTC2h 15m
2026-07-21 ASA1369 BWI → PDX Jul 21, 20:35 UTCJul 22, 02:00 UTC5h 25m
2026-07-21 ASA374 SJD → SJC Jul 21, 14:35 UTCJul 21, 19:00 UTC4h 25m
2026-07-21 ASA710 OGG → SFO Jul 21, 12:10 UTCJul 21, 13:05 UTC55m
2026-07-21 ASA566 FAT → SEA Jul 21, 03:40 UTCJul 21, 05:50 UTC2h 10m
2026-07-20 ASA1638 TPA → SAN Jul 20, 22:11 UTCJul 21, 02:13 UTC4h 2m
2026-07-20 ASA1638 TPA → SAN Jul 20, 22:05 UTCJul 21, 02:15 UTC4h 10m
2026-07-20 ASA1639 SAN → TPA Jul 20, 16:05 UTCJul 20, 20:40 UTC4h 35m
2026-07-20 ASA1639 SAN → TPA Jul 20, 16:05 UTCJul 20, 20:29 UTC4h 24m
2026-07-20 ASA1617 DEN → SAN Jul 20, 12:30 UTCJul 20, 14:20 UTC1h 50m
2026-07-20 ASA1617 DEN → SAN Jul 20, 12:27 UTCJul 20, 14:12 UTC1h 45m
2026-07-20 ASA1619 SAN → DEN Jul 20, 03:25 UTCJul 20, 05:25 UTC2h 0m
2026-07-20 ASA266 SJC → PDX Jul 20, 00:40 UTCJul 20, 01:55 UTC1h 15m
2026-07-19 ASA266 SJC → PDX Jul 19, 20:50 UTCJul 19, 21:00 UTC10m
2026-07-19 ASA693 HNM → KOA Jul 19, 19:05 UTCJul 19, 19:20 UTC15m
2026-07-19 ASA693 - Jul 19, 14:20 UTCJul 19, 15:05 UTC45m
2026-07-19 ASA7 JFK → SEA Jul 19, 00:45 UTCJul 19, 05:55 UTC5h 10m
2026-07-19 ASA7 JFK → SEA Jul 19, 00:50 UTCJul 19, 05:50 UTC5h 0m
2026-07-18 ASA8 SEA → EWR Jul 18, 17:45 UTCJul 18, 23:15 UTC5h 30m
2026-07-18 ASA1603 LAX → SFO Jul 18, 15:35 UTCJul 18, 16:30 UTC55m
2026-07-18 ASA524 - Jul 18, 01:50 UTCJul 18, 04:05 UTC2h 16m
2026-07-17 ASA465 - Jul 17, 21:44 UTCJul 17, 23:50 UTC2h 5m
2026-07-17 ASA465 SAN → SEA Jul 17, 21:42 UTCJul 17, 23:48 UTC2h 6m
2026-07-17 ASA1360 - Jul 17, 15:20 UTCJul 17, 20:15 UTC4h 55m
2026-07-17 ASA1354 - Jul 17, 08:30 UTCJul 17, 12:55 UTC4h 25m
2026-07-17 ASA1353 - Jul 17, 02:20 UTCJul 17, 06:50 UTC4h 30m
2026-07-16 ASA696 - Jul 16, 22:15 UTCJul 17, 00:35 UTC2h 20m
2026-07-16 ASA482 - Jul 16, 16:40 UTCJul 16, 19:05 UTC2h 25m
2026-07-16 ASA1354 - Jul 16, 07:55 UTCJul 16, 08:05 UTC10m
2026-07-16 ASA1354 GUA → LAX Jul 16, 07:53 UTCJul 16, 12:27 UTC4h 34m
2026-07-16 ASA1353 - Jul 16, 01:10 UTCJul 16, 02:15 UTC1h 5m
2026-07-16 ASA1353 LAX → GUA Jul 16, 01:05 UTCJul 16, 05:24 UTC4h 19m
2026-07-15 ASA696 - Jul 15, 21:10 UTCJul 15, 23:30 UTC2h 20m

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 N806AK page for operator, model, and routing details .

Mode-S AAF831 frequently asked

What is Mode-S code AAF831?
AAF831 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N806AK.
Where is Mode-S AAF831 registered?
Mode-S code AAF831 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 AAF831 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAF831, octal 52574061, decimal 11,204,657.
What flights does AAF831 operate?
Mode-S AAF831 has broadcast 20 distinct callsigns, including ASA1354, ASA1353, ASA234, ASA696, ASA1452.