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sensors Mode-S transponder

A5A11A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N462AS · BOEING 737-900 · operated by ALASKA AIRLINES INC

Hex
A5A11A
Octal
51320432
Decimal
10,854,682
Country
US
Tail
N462AS
Type
B739
No current signal · last broadcast 4h ago
Flights observed
393
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A5A11A.

Country allocation

The ICAO 24-bit address A5A11A 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
ASA737 Alaska Airlines 8 2026-06-05
ASA405 Alaska Airlines 7 2026-05-08
ASA762 - 6 2026-06-23
ASA316 Alaska Airlines 6 2026-05-30
ASA270 Alaska Airlines 6 2026-06-14
ASA508 - 5 2026-07-06
ASA378 Alaska Airlines 5 2026-05-15
ASA761 - 4 2026-06-23
ASA609 Alaska Airlines 4 2026-06-25
ASA602 Alaska Airlines 4 2026-06-16
ASA535 - 4 2026-06-27
ASA500 - 4 2026-07-08
ASA453 Alaska Airlines 4 2026-06-10
ASA411 Alaska Airlines 4 2026-05-31
ASA386 Alaska Airlines 4 2026-05-12
ASA201 Alaska Airlines 4 2026-04-15
ASA730 Alaska Airlines 3 2026-04-18
ASA650 - 3 2026-06-24
ASA647 Alaska Airlines 3 2026-05-28
ASA572 Alaska Airlines 3 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA1526 - Jul 14, 03:45 UTCJul 14, 06:20 UTC2h 35m
2026-07-13 ASA1506 BOS → SEA Jul 13, 20:05 UTCJul 14, 01:30 UTC5h 25m
2026-07-13 ASA1505 - Jul 13, 13:15 UTCJul 13, 18:05 UTC4h 50m
2026-07-13 ASA403 SMF → SEA Jul 13, 05:15 UTCJul 13, 06:35 UTC1h 20m
2026-07-13 ASA638 - Jul 13, 02:35 UTCJul 13, 04:10 UTC1h 35m
2026-07-12 ASA286 - Jul 12, 19:20 UTCJul 13, 00:20 UTC5h 0m
2026-07-12 ASA215 AUS → SEA Jul 12, 13:45 UTCJul 12, 17:25 UTC3h 40m
2026-07-12 ASA1370 PDX → AUS Jul 12, 01:30 UTCJul 12, 05:05 UTC3h 35m
2026-07-11 ASA1383 BUR → PDX Jul 11, 22:15 UTCJul 11, 23:55 UTC1h 40m
2026-07-11 ASA1384 PDX → BUR Jul 11, 19:05 UTCJul 11, 21:05 UTC2h 0m
2026-07-11 ASA662 PHX → PDX Jul 11, 01:15 UTCJul 11, 03:35 UTC2h 20m
2026-07-10 ASA700 SEA → PHX Jul 10, 21:30 UTCJul 10, 23:50 UTC2h 20m
2026-07-10 ASA1468 SMF → SEA Jul 10, 17:35 UTCJul 10, 19:10 UTC1h 35m
2026-07-10 ASA682 SEA → SMF Jul 10, 14:40 UTCJul 10, 16:05 UTC1h 25m
2026-07-10 ASA90 FAI → ANC Jul 10, 06:05 UTCJul 10, 07:00 UTC55m
2026-07-10 ASA90 FAI → ANC Jul 10, 01:45 UTCJul 10, 01:55 UTC10m
2026-07-09 ASA626 - Jul 9, 18:50 UTCJul 10, 00:15 UTC5h 25m
2026-07-09 ASA670 PDX → LAS Jul 9, 11:15 UTCJul 9, 16:25 UTC5h 10m
2026-07-09 ASA677 SEA → RDU Jul 9, 04:55 UTCJul 9, 09:25 UTC4h 30m
2026-07-08 ASA500 - Jul 8, 21:40 UTCJul 9, 02:05 UTC4h 25m
2026-07-08 ASA500 - Jul 8, 16:30 UTCJul 8, 20:05 UTC3h 35m
2026-07-08 ASA557 - Jul 8, 11:15 UTCJul 8, 14:20 UTC3h 5m
2026-07-08 ASA556 SFO → IAD Jul 8, 02:30 UTCJul 8, 05:10 UTC2h 40m
2026-07-08 ASA556 SFO → IAD Jul 8, 02:27 UTCJul 8, 05:10 UTC2h 43m
2026-07-07 ASA456 - Jul 7, 22:45 UTCJul 8, 00:45 UTC2h 0m
2026-07-07 ASA209 LAX → SFO Jul 7, 19:40 UTCJul 7, 21:30 UTC1h 50m
2026-07-07 ASA1533 - Jul 7, 15:25 UTCJul 7, 17:45 UTC2h 20m
2026-07-07 ASA1533 JNU → SEA Jul 7, 15:18 UTCJul 7, 17:28 UTC2h 10m
2026-07-07 ASA1559 SEA → JNU Jul 7, 03:45 UTCJul 7, 05:35 UTC1h 50m
2026-07-07 ASA1559 SEA → JNU Jul 7, 03:45 UTCJul 7, 05:44 UTC1h 59m
2026-07-06 ASA508 - Jul 6, 21:40 UTCJul 7, 01:55 UTC4h 15m
2026-07-06 ASA508 CVG → SEA Jul 6, 21:36 UTCJul 7, 01:43 UTC4h 7m
2026-07-06 ASA508 SEA → CVG Jul 6, 16:10 UTCJul 6, 20:00 UTC3h 50m
2026-07-06 ASA417 - Jul 6, 00:50 UTCJul 6, 03:00 UTC2h 10m
2026-07-05 ASA1414 - Jul 5, 17:55 UTCJul 5, 22:55 UTC5h 0m
2026-07-05 ASA1470 ORD → SAN Jul 5, 11:35 UTCJul 5, 15:15 UTC3h 40m
2026-07-05 ASA429 SEA → ORD Jul 5, 01:15 UTCJul 5, 04:45 UTC3h 30m
2026-07-04 ASA275 - Jul 4, 16:10 UTCJul 4, 19:15 UTC3h 5m
2026-07-04 ASA1612 ANC → FAI Jul 4, 04:40 UTCJul 4, 05:25 UTC45m
2026-07-04 ASA225 SEA → ANC Jul 4, 00:30 UTCJul 4, 03:30 UTC3h 0m
2026-07-03 ASA246 - Jul 3, 21:45 UTCJul 3, 22:40 UTC55m
2026-07-03 ASA202 SEA → OGG Jul 3, 02:27 UTCJul 3, 07:21 UTC4h 54m
2026-07-03 ASA202 - Jul 3, 02:15 UTCJul 3, 03:05 UTC50m
2026-07-02 ASA618 STL → SEA Jul 2, 20:05 UTCJul 2, 23:50 UTC3h 45m
2026-07-02 ASA618 SEA → STL Jul 2, 15:15 UTCJul 2, 18:40 UTC3h 25m
2026-07-02 ASA703 BUR → SEA Jul 2, 02:00 UTCJul 2, 04:10 UTC2h 10m
2026-07-01 ASA331 SEA → BUR Jul 1, 22:25 UTCJul 2, 00:25 UTC2h 0m
2026-07-01 ASA275 FAI → SEA Jul 1, 16:10 UTCJul 1, 19:20 UTC3h 10m
2026-07-01 ASA1612 ANC → FAI Jul 1, 04:45 UTCJul 1, 05:20 UTC35m
2026-07-01 ASA1612 ANC → FAI Jul 1, 04:42 UTCJul 1, 05:25 UTC43m

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 N462AS page for operator, model, and routing details .

Mode-S A5A11A frequently asked

What is Mode-S code A5A11A?
A5A11A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N462AS.
Where is Mode-S A5A11A registered?
Mode-S code A5A11A 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 A5A11A 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 A5A11A, octal 51320432, decimal 10,854,682.
What flights does A5A11A operate?
Mode-S A5A11A has broadcast 20 distinct callsigns, including ASA737, ASA405, ASA762, ASA316, ASA270.