Apparatus

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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 3h ago
Flights observed
352
Distinct callsigns
20
Country
US
Last broadcast
3h ago

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
ASA731 - 4 2026-07-11
ASA294 - 4 2026-07-10
ASA1477 Alaska Airlines 4 2026-06-18
ASA98 - 3 2026-07-04
ASA722 Alaska Airlines 3 2026-06-03
ASA546 - 3 2026-06-25
ASA437 Alaska Airlines 3 2026-06-08
ASA356 Alaska Airlines 3 2026-04-16
ASA326 - 3 2026-06-17
ASA323 - 3 2026-06-19
ASA306 - 3 2026-07-09
ASA287 Alaska Airlines 3 2026-06-03
ASA276 Alaska Airlines 3 2026-05-02
ASA205 - 3 2026-06-14
ASA203 - 3 2026-07-01
ASA1455 Alaska Airlines 3 2026-05-11
ASA1421 Alaska Airlines 3 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ASA402 ANC → SEA Jul 13, 21:10 UTCJul 14, 00:10 UTC3h 0m
2026-07-13 ASA53 LAX → ANC Jul 13, 14:45 UTCJul 13, 19:45 UTC5h 0m
2026-07-13 ASA1389 - Jul 13, 04:40 UTCJul 13, 06:40 UTC2h 0m
2026-07-13 ASA1389 PDX → LAX Jul 13, 04:36 UTCJul 13, 06:32 UTC1h 56m
2026-07-12 ASA783 ATL → PDX Jul 12, 22:40 UTCJul 13, 03:10 UTC4h 30m
2026-07-12 ASA334 SEA → ATL Jul 12, 16:25 UTCJul 12, 20:40 UTC4h 15m
2026-07-12 ASA1498 ANC → SEA Jul 12, 09:10 UTCJul 12, 12:10 UTC3h 0m
2026-07-12 ASA1498 ANC → SEA Jul 12, 09:06 UTCJul 12, 12:03 UTC2h 57m
2026-07-12 ASA1532 PHX → ANC Jul 12, 01:45 UTCJul 12, 06:50 UTC5h 5m
2026-07-11 ASA731 PDX → PHX Jul 11, 22:15 UTCJul 12, 00:35 UTC2h 20m
2026-07-11 ASA1467 LAS → PDX Jul 11, 18:30 UTCJul 11, 20:15 UTC1h 45m
2026-07-11 ASA627 PDX → LAS Jul 11, 15:10 UTCJul 11, 17:05 UTC1h 55m
2026-07-10 ASA290 - Jul 10, 23:35 UTCJul 11, 04:55 UTC5h 20m
2026-07-10 ASA294 PDX → EWR Jul 10, 14:55 UTCJul 10, 19:45 UTC4h 50m
2026-07-10 ASA1457 SEA → PDX Jul 10, 06:05 UTCJul 10, 06:40 UTC35m
2026-07-09 ASA304 SEA → LAX Jul 9, 22:40 UTCJul 10, 04:30 UTC5h 50m
2026-07-09 ASA306 SEA → BOS Jul 9, 15:50 UTCJul 9, 20:35 UTC4h 45m
2026-07-09 ASA499 PDX → SEA Jul 9, 13:30 UTCJul 9, 14:05 UTC35m
2026-07-09 ASA779 LAS → PDX Jul 9, 01:30 UTCJul 9, 03:20 UTC1h 50m
2026-07-08 ASA776 HAF → LAS Jul 8, 23:00 UTCJul 9, 00:10 UTC1h 10m
2026-07-08 ASA41 - Jul 8, 15:55 UTCJul 8, 21:15 UTC5h 20m
2026-07-08 ASA211 - Jul 8, 05:05 UTCJul 8, 10:15 UTC5h 10m
2026-07-08 ASA1379 - Jul 8, 01:05 UTCJul 8, 03:00 UTC1h 55m
2026-07-07 ASA421 - Jul 7, 19:15 UTCJul 7, 22:20 UTC3h 5m
2026-07-07 ASA421 SEA → SJD Jul 7, 19:11 UTCJul 7, 23:06 UTC3h 55m
2026-07-07 ASA670 PDX → LAS Jul 7, 11:45 UTCJul 7, 16:45 UTC5h 0m
2026-07-07 ASA677 SEA → RDU Jul 7, 05:25 UTCJul 7, 10:10 UTC4h 45m
2026-07-06 ASA31 JFK → SEA Jul 6, 21:55 UTCJul 7, 03:45 UTC5h 50m
2026-07-06 ASA31 JFK → SEA Jul 6, 21:55 UTCJul 7, 03:28 UTC5h 33m
2026-07-06 ASA26 SEA → JFK Jul 6, 14:10 UTCJul 6, 19:05 UTC4h 55m
2026-07-05 ASA322 DFW → SEA Jul 5, 23:55 UTCJul 6, 03:35 UTC3h 40m
2026-07-05 ASA341 SEA → DFW Jul 5, 18:40 UTCJul 5, 22:10 UTC3h 30m
2026-07-05 ASA670 PDX → LAS Jul 5, 11:15 UTCJul 5, 16:20 UTC5h 5m
2026-07-04 ASA572 SEA → RDU Jul 4, 15:40 UTCJul 4, 20:15 UTC4h 35m
2026-07-04 ASA98 ANC → SEA Jul 4, 10:10 UTCJul 4, 13:05 UTC2h 55m
2026-07-04 ASA1532 PHX → ANC Jul 4, 01:45 UTCJul 4, 07:15 UTC5h 30m
2026-07-03 ASA731 PDX → PHX Jul 3, 22:00 UTCJul 4, 00:10 UTC2h 10m
2026-07-03 ASA1699 ONT → PDX Jul 3, 17:55 UTCJul 3, 19:50 UTC1h 55m
2026-07-03 ASA1699 ONT → PDX Jul 3, 17:50 UTCJul 3, 19:51 UTC2h 1m
2026-07-03 ASA1449 - Jul 3, 14:50 UTCJul 3, 16:40 UTC1h 50m
2026-07-03 ASA662 PHX → PDX Jul 3, 01:35 UTCJul 3, 03:50 UTC2h 15m
2026-07-02 ASA700 SEA → PHX Jul 2, 21:48 UTCJul 3, 00:14 UTC2h 26m
2026-07-02 ASA700 SEA → PHX Jul 2, 21:50 UTCJul 3, 00:20 UTC2h 30m
2026-07-02 ASA1468 SMF → SEA Jul 2, 17:35 UTCJul 2, 19:20 UTC1h 45m
2026-07-02 ASA682 SEA → SMF Jul 2, 15:00 UTCJul 2, 16:25 UTC1h 25m
2026-07-02 ASA244 OGG → SEA Jul 2, 01:59 UTCJul 2, 07:24 UTC5h 25m
2026-07-01 ASA244 - Jul 1, 19:15 UTCJul 2, 07:30 UTC12h 15m
2026-07-01 ASA203 - Jul 1, 02:35 UTCJul 1, 03:25 UTC50m
2026-06-30 ASA203 OGG → SAN Jun 30, 22:39 UTCJul 1, 03:17 UTC4h 38m
2026-06-30 ASA245 SEA → OGG Jun 30, 15:25 UTCJun 30, 16:05 UTC40m

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 3h ago.
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, ASA731, ASA294.