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sensors Mode-S transponder

A61797

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N492AS · BOEING 737-900 · operated by ALASKA AIRLINES INC

Hex
A61797
Octal
51413627
Decimal
10,885,015
Country
US
Tail
N492AS
Type
B739
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
412
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A61797.

Country allocation

The ICAO 24-bit address A61797 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
ASA290 - 6 2026-07-10
ASA787 - 5 2026-06-29
ASA368 Alaska Airlines 5 2026-04-29
ASA98 Alaska Airlines 4 2026-07-24
ASA731 - 4 2026-07-11
ASA67 - 4 2026-07-19
ASA535 - 4 2026-07-21
ASA294 - 4 2026-07-10
ASA1477 Alaska Airlines 4 2026-06-18
ASA722 Alaska Airlines 3 2026-06-03
ASA596 Alaska Airlines 3 2026-07-26
ASA572 Alaska Airlines 3 2026-07-25
ASA546 - 3 2026-06-25
ASA497 - 3 2026-07-16
ASA47 Alaska Airlines 3 2026-07-20
ASA437 Alaska Airlines 3 2026-06-08
ASA387 - 3 2026-07-14
ASA386 - 3 2026-07-14
ASA356 Alaska Airlines 3 2026-04-16
ASA326 - 3 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA596 LAS → PDX Jul 26, 20:30 UTCJul 26, 21:45 UTC1h 15m
2026-07-26 ASA653 SFO → ZIH Jul 26, 17:40 UTCJul 26, 19:05 UTC1h 25m
2026-07-26 ASA519 FLL → SEA Jul 26, 12:10 UTCJul 26, 15:50 UTC3h 40m
2026-07-26 ASA520 SEA → FLL Jul 26, 06:10 UTCJul 26, 09:45 UTC3h 36m
2026-07-25 ASA572 RDU → SEA Jul 25, 21:50 UTCJul 26, 03:10 UTC5h 20m
2026-07-25 ASA572 RDU → SEA Jul 25, 15:40 UTCJul 25, 20:00 UTC4h 20m
2026-07-25 ASA279 SEA → BUR Jul 25, 13:20 UTCJul 25, 14:05 UTC45m
2026-07-25 ASA279 SEA → BUR Jul 25, 13:20 UTCJul 25, 13:55 UTC35m
2026-07-25 ASA1614 LAX → GEG Jul 25, 03:15 UTCJul 25, 05:05 UTC1h 50m
2026-07-24 ASA1300 SJC → SEA Jul 24, 23:40 UTCJul 25, 02:00 UTC2h 20m
2026-07-24 ASA381 DTW → SEA Jul 24, 19:21 UTCJul 24, 21:28 UTC2h 7m
2026-07-24 ASA381 DTW → SEA Jul 24, 19:05 UTCJul 24, 21:35 UTC2h 30m
2026-07-24 ASA375 EWR → SFO Jul 24, 15:30 UTCJul 24, 17:35 UTC2h 5m
2026-07-24 ASA98 ADQ → ANC Jul 24, 10:05 UTCJul 24, 12:55 UTC2h 50m
2026-07-24 ASA352 ANC → SEA Jul 24, 01:50 UTCJul 24, 02:45 UTC55m
2026-07-24 ASA351 LAX → SEA Jul 24, 00:00 UTCJul 24, 00:50 UTC50m
2026-07-23 ASA1825 PDX → ONT Jul 23, 15:45 UTCJul 23, 22:15 UTC6h 30m
2026-07-23 ASA1543 LAX → SEA Jul 23, 07:55 UTCJul 23, 13:05 UTC5h 10m
2026-07-23 ASA663 PDX → PHX Jul 23, 03:15 UTCJul 23, 06:40 UTC3h 25m
2026-07-22 ASA513 SNA → SEA Jul 22, 22:20 UTCJul 22, 23:20 UTC1h 0m
2026-07-22 ASA513 SNA → SEA Jul 22, 18:10 UTCJul 22, 18:25 UTC15m
2026-07-22 ASA200 SJC → SJD Jul 22, 02:15 UTCJul 22, 03:00 UTC45m
2026-07-21 ASA697 MSO → SEA Jul 21, 23:20 UTCJul 22, 00:25 UTC1h 5m
2026-07-21 ASA697 MSO → SEA Jul 21, 20:50 UTCJul 21, 21:35 UTC45m
2026-07-21 ASA1468 SEA → LAX Jul 21, 17:35 UTCJul 21, 19:00 UTC1h 25m
2026-07-21 ASA682 SEA → DEN Jul 21, 14:45 UTCJul 21, 16:10 UTC1h 25m
2026-07-21 ASA535 DEN → SEA Jul 21, 05:05 UTCJul 21, 07:20 UTC2h 15m
2026-07-20 ASA535 SEA → DEN Jul 20, 20:15 UTCJul 20, 22:40 UTC2h 25m
2026-07-20 ASA47 ORD → ANC Jul 20, 16:20 UTCJul 20, 18:30 UTC2h 10m
2026-07-20 ASA47 ORD → ANC Jul 20, 15:15 UTCJul 20, 16:15 UTC1h 0m
2026-07-20 ASA50 BRW → ANC Jul 20, 07:40 UTCJul 20, 08:00 UTC20m
2026-07-20 ASA50 BRW → ANC Jul 20, 07:52 UTCJul 20, 13:06 UTC5h 14m
2026-07-20 ASA49 SNA → PDX Jul 20, 06:05 UTCJul 20, 06:20 UTC15m
2026-07-20 ASA49 SNA → PDX Jul 20, 00:25 UTCJul 20, 01:30 UTC1h 5m
2026-07-19 ASA1825 PDX → ONT Jul 19, 16:10 UTCJul 19, 22:20 UTC6h 10m
2026-07-19 ASA1825 PDX → ONT Jul 19, 16:06 UTCJul 19, 22:16 UTC6h 10m
2026-07-19 ASA1543 - Jul 19, 08:10 UTCJul 19, 13:50 UTC5h 40m
2026-07-19 ASA67 - Jul 19, 05:00 UTCJul 19, 06:25 UTC1h 25m
2026-07-19 ASA67 - Jul 19, 03:35 UTCJul 19, 03:55 UTC20m
2026-07-19 ASA67 - Jul 19, 01:35 UTCJul 19, 01:55 UTC20m
2026-07-18 ASA67 - Jul 18, 22:55 UTCJul 19, 00:20 UTC1h 25m
2026-07-18 ASA48 ANC → SEA Jul 18, 18:15 UTCJul 18, 21:05 UTC2h 50m
2026-07-18 ASA85 SEA → ANC Jul 18, 13:15 UTCJul 18, 16:40 UTC3h 25m
2026-07-18 ASA244 OGG → SEA Jul 18, 08:25 UTCJul 18, 09:25 UTC1h 0m
2026-07-17 ASA254 - Jul 17, 21:34 UTCJul 17, 22:15 UTC40m
2026-07-17 ASA1361 SEA → SAN Jul 17, 13:29 UTCJul 17, 16:04 UTC2h 35m
2026-07-17 ASA501 - Jul 17, 01:49 UTCJul 17, 05:15 UTC3h 25m
2026-07-16 ASA497 - Jul 16, 21:40 UTCJul 17, 00:35 UTC2h 55m
2026-07-16 ASA623 BNA → SEA Jul 16, 14:45 UTCJul 16, 18:59 UTC4h 15m
2026-07-16 ASA623 BNA → SEA Jul 16, 14:41 UTCJul 16, 18:42 UTC4h 1m

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 N492AS page for operator, model, and routing details .

Mode-S A61797 frequently asked

What is Mode-S code A61797?
A61797 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N492AS.
Where is Mode-S A61797 registered?
Mode-S code A61797 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 A61797 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A61797, octal 51413627, decimal 10,885,015.
What flights does A61797 operate?
Mode-S A61797 has broadcast 20 distinct callsigns, including ASA290, ASA787, ASA368, ASA98, ASA731.