Apparatus

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sensors Mode-S transponder

A6EE47

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N546AS · BOEING 737-800 · operated by ALASKA AIRLINES INC

Hex
A6EE47
Octal
51567107
Decimal
10,939,975
Country
US
Tail
N546AS
Type
B738
No current signal · last broadcast 8h ago
Flights observed
411
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A6EE47.

Country allocation

The ICAO 24-bit address A6EE47 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
ASA658 - 8 2026-07-09
ASA548 - 6 2026-07-13
ASA1497 Alaska Airlines 6 2026-05-10
ASA773 - 5 2026-07-07
ASA60 Alaska Airlines 5 2026-06-07
ASA498 - 5 2026-06-18
ASA759 - 4 2026-07-13
ASA660 - 4 2026-07-03
ASA634 Alaska Airlines 4 2026-06-03
ASA521 Alaska Airlines 4 2026-05-16
ASA322 Alaska Airlines 4 2026-06-18
ASA1384 Alaska Airlines 4 2026-05-30
ASA1325 - 4 2026-06-30
ASA1311 - 4 2026-06-23
ASA9663 Alaska Airlines 3 2026-05-26
ASA771 - 3 2026-07-06
ASA695 Alaska Airlines 3 2026-05-02
ASA686 - 3 2026-07-13
ASA555 - 3 2026-07-01
ASA534 - 3 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA1627 PDX → DEN Jul 14, 01:15 UTCJul 14, 03:20 UTC2h 5m
2026-07-13 ASA686 SEA → PDX Jul 13, 23:15 UTCJul 13, 23:45 UTC30m
2026-07-13 ASA686 SEA → PDX Jul 13, 23:11 UTCJul 13, 23:44 UTC33m
2026-07-13 ASA548 - Jul 13, 19:20 UTCJul 13, 21:25 UTC2h 5m
2026-07-13 ASA548 SNA → SEA Jul 13, 19:27 UTCJul 13, 21:13 UTC1h 46m
2026-07-13 ASA759 - Jul 13, 15:30 UTCJul 13, 18:00 UTC2h 30m
2026-07-13 ASA461 BZN → SEA Jul 13, 12:40 UTCJul 13, 13:36 UTC56m
2026-07-13 ASA461 SEA → SEA Jul 13, 04:30 UTCJul 13, 13:40 UTC9h 10m
2026-07-12 ASA508 - Jul 12, 21:15 UTCJul 13, 01:30 UTC4h 15m
2026-07-12 ASA508 SEA → CVG Jul 12, 16:05 UTCJul 12, 19:55 UTC3h 50m
2026-07-12 ASA221 ANC → SEA Jul 12, 08:57 UTCJul 12, 11:43 UTC2h 46m
2026-07-12 ASA221 ANC → SEA Jul 12, 08:45 UTCJul 12, 11:50 UTC3h 5m
2026-07-12 ASA1320 DEN → ANC Jul 12, 02:20 UTCJul 12, 07:15 UTC4h 55m
2026-07-12 ASA1320 DEN → ANC Jul 12, 02:16 UTCJul 12, 07:10 UTC4h 54m
2026-07-11 ASA1320 - Jul 11, 19:30 UTCJul 12, 00:20 UTC4h 50m
2026-07-11 ASA663 - Jul 11, 03:01 UTCJul 11, 06:01 UTC3h 0m
2026-07-10 ASA1340 SFO → SEA Jul 10, 23:15 UTCJul 11, 00:45 UTC1h 30m
2026-07-10 ASA1522 - Jul 10, 20:55 UTCJul 10, 21:55 UTC1h 0m
2026-07-10 ASA1602 SFO → LAX Jul 10, 18:05 UTCJul 10, 19:05 UTC1h 0m
2026-07-10 ASA526 PDX → SFO Jul 10, 15:00 UTCJul 10, 16:35 UTC1h 35m
2026-07-10 ASA1520 FAI → PDX Jul 10, 08:50 UTCJul 10, 12:20 UTC3h 30m
2026-07-10 ASA1612 ANC → FAI Jul 10, 06:00 UTCJul 10, 06:36 UTC36m
2026-07-10 ASA1612 ANC → FAI Jul 10, 05:50 UTCJul 10, 06:35 UTC45m
2026-07-09 ASA1637 LAS → ANC Jul 9, 23:45 UTCJul 10, 04:35 UTC4h 50m
2026-07-09 ASA658 SEA → LAS Jul 9, 20:20 UTCJul 9, 22:15 UTC1h 55m
2026-07-09 ASA365 DFW → SEA Jul 9, 14:30 UTCJul 9, 18:10 UTC3h 40m
2026-07-09 ASA424 - Jul 9, 01:50 UTCJul 9, 05:05 UTC3h 15m
2026-07-08 ASA585 - Jul 8, 21:10 UTCJul 8, 23:15 UTC2h 5m
2026-07-08 ASA585 LAX → SEA Jul 8, 21:05 UTCJul 8, 23:02 UTC1h 57m
2026-07-08 ASA1367 SEA → LAX Jul 8, 17:35 UTCJul 8, 19:45 UTC2h 10m
2026-07-08 ASA364 GEG → SEA Jul 8, 15:27 UTCJul 8, 15:53 UTC26m
2026-07-08 ASA364 GEG → SEA Jul 8, 15:10 UTCJul 8, 15:55 UTC45m
2026-07-08 ASA350 SEA → GEG Jul 8, 06:15 UTCJul 8, 06:55 UTC40m
2026-07-08 ASA774 - Jul 8, 00:30 UTCJul 8, 02:40 UTC2h 10m
2026-07-07 ASA773 - Jul 7, 20:50 UTCJul 7, 23:10 UTC2h 20m
2026-07-07 ASA773 SEA → SNA Jul 7, 20:49 UTCJul 7, 23:07 UTC2h 18m
2026-07-07 ASA720 BUR → SEA Jul 7, 17:35 UTCJul 7, 19:13 UTC1h 38m
2026-07-07 ASA720 BUR → SEA Jul 7, 17:20 UTCJul 7, 19:20 UTC2h 0m
2026-07-07 ASA488 SEA → BUR Jul 7, 14:08 UTCJul 7, 15:57 UTC1h 49m
2026-07-07 ASA488 SEA → BUR Jul 7, 13:55 UTCJul 7, 16:00 UTC2h 5m
2026-07-06 ASA517 - Jul 6, 23:15 UTCJul 7, 05:05 UTC5h 50m
2026-07-06 ASA516 SEA → FLL Jul 6, 15:40 UTCJul 6, 21:15 UTC5h 35m
2026-07-06 ASA75 ANC → SEA Jul 6, 10:30 UTCJul 6, 13:35 UTC3h 5m
2026-07-06 ASA771 SEA → ANC Jul 6, 04:40 UTCJul 6, 07:40 UTC3h 0m
2026-07-06 ASA214 - Jul 6, 00:15 UTCJul 6, 01:50 UTC1h 35m
2026-07-05 ASA92 - Jul 5, 21:15 UTCJul 5, 22:45 UTC1h 30m
2026-07-05 ASA796 SLC → SEA Jul 5, 17:35 UTCJul 5, 19:15 UTC1h 40m
2026-07-05 ASA292 SEA → SLC Jul 5, 14:30 UTCJul 5, 16:00 UTC1h 30m
2026-07-05 ASA1498 ANC → SEA Jul 5, 09:10 UTCJul 5, 12:00 UTC2h 50m
2026-07-04 ASA657 SEA → ANC Jul 4, 20:45 UTCJul 4, 23:55 UTC3h 10m

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 N546AS page for operator, model, and routing details .

Mode-S A6EE47 frequently asked

What is Mode-S code A6EE47?
A6EE47 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N546AS.
Where is Mode-S A6EE47 registered?
Mode-S code A6EE47 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 A6EE47 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6EE47, octal 51567107, decimal 10,939,975.
What flights does A6EE47 operate?
Mode-S A6EE47 has broadcast 20 distinct callsigns, including ASA658, ASA548, ASA1497, ASA773, ASA60.