Apparatus

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sensors Mode-S transponder

A622BC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N495AS · BOEING 737-900 · operated by ALASKA AIRLINES INC

Hex
A622BC
Octal
51421274
Decimal
10,887,868
Country
US
Tail
N495AS
Type
B739
Broadcasting now · callsign ASA1412 · 34,975 ft
Flights observed
403
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Current position

A622BC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A622BC 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
ASA785 Alaska Airlines 5 2026-07-25
ASA762 Alaska Airlines 5 2026-07-19
ASA50 - 5 2026-06-24
ASA267 Alaska Airlines 5 2026-05-16
ASA1346 - 5 2026-07-14
ASA99 Alaska Airlines 4 2026-05-16
ASA786 - 4 2026-07-01
ASA742 - 4 2026-07-12
ASA663 Alaska Airlines 4 2026-06-26
ASA626 Alaska Airlines 4 2026-05-16
ASA507 - 4 2026-07-09
ASA501 Alaska Airlines 4 2026-06-08
ASA438 - 4 2026-07-15
ASA402 Alaska Airlines 4 2026-06-15
ASA300 Alaska Airlines 4 2026-07-24
ASA9804 Alaska Airlines 3 2026-04-17
ASA9661 - 3 2026-06-24
ASA761 Alaska Airlines 3 2026-07-19
ASA710 Alaska Airlines 3 2026-05-27
ASA659 Alaska Airlines 3 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA517 FLL → SEA Jul 26, 22:50 UTCJul 26, 23:00 UTC10m
2026-07-26 ASA516 SEA → FLL Jul 26, 15:45 UTCJul 26, 21:00 UTC5h 15m
2026-07-26 ASA259 SJD → SJC Jul 26, 07:51 UTCJul 26, 12:58 UTC5h 7m
2026-07-26 ASA259 SJD → SJC Jul 26, 07:50 UTCJul 26, 13:05 UTC5h 15m
2026-07-26 ASA238 SFO → LAS Jul 26, 04:30 UTCJul 26, 04:45 UTC15m
2026-07-25 ASA238 SFO → LAS Jul 25, 23:05 UTCJul 26, 00:00 UTC55m
2026-07-25 ASA785 LAS → SEA Jul 25, 18:40 UTCJul 25, 20:35 UTC1h 55m
2026-07-25 ASA612 SEA → LAS Jul 25, 15:00 UTCJul 25, 17:15 UTC2h 15m
2026-07-25 ASA98 ADQ → ANC Jul 25, 10:10 UTCJul 25, 13:15 UTC3h 5m
2026-07-25 ASA771 ORD → SFO Jul 25, 04:35 UTCJul 25, 07:45 UTC3h 10m
2026-07-24 ASA419 SFO → LAS Jul 24, 21:05 UTCJul 25, 02:30 UTC5h 25m
2026-07-24 ASA300 SAN → LIH Jul 24, 14:25 UTCJul 24, 19:15 UTC4h 50m
2026-07-24 ASA525 LAX → SEA Jul 24, 02:20 UTCJul 24, 03:35 UTC1h 15m
2026-07-24 ASA1610 LAX → SFO Jul 24, 00:05 UTCJul 24, 01:05 UTC1h 0m
2026-07-23 ASA1604 SFO → LAX Jul 23, 22:00 UTCJul 23, 22:26 UTC26m
2026-07-23 ASA1604 SFO → LAX Jul 23, 21:45 UTCJul 23, 22:40 UTC55m
2026-07-23 ASA227 SJC → SEA Jul 23, 14:25 UTCJul 23, 20:05 UTC5h 40m
2026-07-23 ASA22 SEA → JFK Jul 23, 07:00 UTCJul 23, 11:25 UTC4h 25m
2026-07-23 ASA544 PDX → SFO Jul 23, 02:00 UTCJul 23, 05:05 UTC3h 5m
2026-07-22 ASA659 LAX → SFO Jul 22, 21:25 UTCJul 23, 00:35 UTC3h 10m
2026-07-22 ASA629 LAS → SEA Jul 22, 17:45 UTCJul 22, 19:40 UTC1h 55m
2026-07-22 ASA777 SEA → OAK Jul 22, 14:10 UTCJul 22, 16:20 UTC2h 10m
2026-07-22 ASA777 SEA → OAK Jul 22, 14:19 UTCJul 22, 16:12 UTC1h 53m
2026-07-22 ASA366 MKE → SEA Jul 22, 03:10 UTCJul 22, 05:10 UTC2h 0m
2026-07-21 ASA1456 SJC → PDX Jul 21, 23:40 UTCJul 22, 02:10 UTC2h 30m
2026-07-21 ASA596 - Jul 21, 20:20 UTCJul 21, 21:55 UTC1h 35m
2026-07-21 ASA653 SFO → ZIH Jul 21, 17:38 UTCJul 21, 19:13 UTC1h 35m
2026-07-21 ASA653 SFO → ZIH Jul 21, 17:40 UTCJul 21, 19:00 UTC1h 20m
2026-07-21 ASA519 FLL → SEA Jul 21, 12:15 UTCJul 21, 15:50 UTC3h 35m
2026-07-21 ASA520 SEA → FLL Jul 21, 06:25 UTCJul 21, 10:00 UTC3h 35m
2026-07-20 ASA304 SEA → LAX Jul 20, 22:30 UTCJul 21, 04:25 UTC5h 55m
2026-07-20 ASA306 PDX → SFO Jul 20, 15:45 UTCJul 20, 20:20 UTC4h 35m
2026-07-20 ASA719 SLC → SEA Jul 20, 03:35 UTCJul 20, 05:20 UTC1h 45m
2026-07-19 ASA373 SJC → SJD Jul 19, 23:55 UTCJul 20, 01:30 UTC1h 35m
2026-07-19 ASA373 SJC → SJD Jul 19, 23:50 UTCJul 20, 01:21 UTC1h 31m
2026-07-19 ASA762 PDX → PHX Jul 19, 21:35 UTCJul 19, 22:30 UTC55m
2026-07-19 ASA762 PDX → PHX Jul 19, 17:20 UTCJul 19, 17:35 UTC15m
2026-07-19 ASA761 SEA → SJC Jul 19, 01:40 UTCJul 19, 07:05 UTC5h 25m
2026-07-18 ASA1338 SNQ → SEA Jul 18, 19:55 UTCJul 18, 22:25 UTC2h 30m
2026-07-18 ASA455 - Jul 18, 14:15 UTCJul 18, 16:10 UTC1h 55m
2026-07-18 ASA455 SFO → SJD Jul 18, 14:27 UTCJul 18, 17:01 UTC2h 34m
2026-07-18 ASA619 SEA → SFO Jul 18, 02:09 UTCJul 18, 04:00 UTC1h 51m
2026-07-17 ASA641 TUS → SEA Jul 17, 21:34 UTCJul 18, 00:15 UTC2h 40m
2026-07-17 ASA648 SEA → TUS Jul 17, 17:35 UTCJul 17, 20:15 UTC2h 40m
2026-07-17 ASA648 SEA → TUS Jul 17, 17:32 UTCJul 17, 20:12 UTC2h 40m
2026-07-17 ASA519 - Jul 17, 12:10 UTCJul 17, 15:55 UTC3h 45m
2026-07-17 ASA520 - Jul 17, 06:35 UTCJul 17, 10:25 UTC3h 50m
2026-07-16 ASA419 MCO → SEA Jul 16, 23:25 UTCJul 17, 04:44 UTC5h 20m
2026-07-16 ASA300 TPA → MCO Jul 16, 21:40 UTCJul 16, 22:00 UTC20m
2026-07-16 ASA300 - Jul 16, 14:20 UTCJul 16, 20:15 UTC5h 55m

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 N495AS page for operator, model, and routing details .

Mode-S A622BC frequently asked

What is Mode-S code A622BC?
A622BC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N495AS.
Where is Mode-S A622BC registered?
Mode-S code A622BC 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 A622BC broadcasting right now?
Yes. Mode-S A622BC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A622BC, octal 51421274, decimal 10,887,868.
What flights does A622BC operate?
Mode-S A622BC has broadcast 20 distinct callsigns, including ASA785, ASA762, ASA50, ASA267, ASA1346.