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sensors Mode-S transponder

AAF47A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N805AK · operated by ALASKA AIRLINES INC

Hex
AAF47A
Octal
52572172
Decimal
11,203,706
Country
US
Tail
N805AK
Type
B38M
Broadcasting now · callsign ASA444 · 38,000 ft
Flights observed
355
Distinct callsigns
20
Country
US
Last broadcast
52m ago

Current position

AAF47A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AAF47A 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
ASA1354 Alaska Airlines 11 2026-05-25
ASA1353 Alaska Airlines 7 2026-05-23
ASA99 - 6 2026-07-11
ASA8 Alaska Airlines 6 2026-04-16
ASA258 Alaska Airlines 6 2026-06-10
ASA1536 - 6 2026-07-12
ASA1535 - 6 2026-07-12
ASA755 - 5 2026-07-13
ASA754 - 5 2026-07-12
ASA7 Alaska Airlines 5 2026-04-17
ASA64 - 5 2026-06-22
ASA400 Alaska Airlines 5 2026-06-06
ASA237 Alaska Airlines 5 2026-05-17
ASA1453 Alaska Airlines 5 2026-06-02
ASA1333 - 5 2026-07-13
ASA555 - 4 2026-06-25
ASA405 Alaska Airlines 4 2026-05-30
ASA313 Alaska Airlines 4 2026-04-24
ASA234 - 4 2026-06-13
ASA1452 Alaska Airlines 4 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA444 - Jul 14, 14:25 UTCJul 14, 14:30 UTC5m
2026-07-14 ASA1372 SEA → BUR Jul 14, 01:15 UTCJul 14, 03:35 UTC2h 20m
2026-07-13 ASA465 - Jul 13, 21:35 UTCJul 13, 23:45 UTC2h 10m
2026-07-13 ASA467 SEA → SAN Jul 13, 17:31 UTCJul 13, 20:03 UTC2h 32m
2026-07-13 ASA467 SEA → SAN Jul 13, 17:35 UTCJul 13, 20:10 UTC2h 35m
2026-07-13 ASA1333 ANC → SEA Jul 13, 03:25 UTCJul 13, 06:13 UTC2h 48m
2026-07-13 ASA1333 ANC → SEA Jul 13, 03:15 UTCJul 13, 06:20 UTC3h 5m
2026-07-13 ASA755 - Jul 13, 00:55 UTCJul 13, 01:40 UTC45m
2026-07-12 ASA754 ANC → DLG Jul 12, 23:05 UTCJul 12, 23:42 UTC37m
2026-07-12 ASA754 - Jul 12, 22:50 UTCJul 12, 23:40 UTC50m
2026-07-12 ASA1536 JFK → ANC Jul 12, 14:01 UTCJul 12, 21:20 UTC7h 20m
2026-07-12 ASA1535 - Jul 12, 04:10 UTCJul 12, 10:45 UTC6h 35m
2026-07-11 ASA99 SEA → ANC Jul 11, 23:10 UTCJul 12, 02:05 UTC2h 55m
2026-07-11 ASA548 - Jul 11, 19:25 UTCJul 11, 21:35 UTC2h 10m
2026-07-11 ASA548 SNA → SEA Jul 11, 19:37 UTCJul 11, 21:18 UTC1h 41m
2026-07-11 ASA759 - Jul 11, 15:30 UTCJul 11, 18:00 UTC2h 30m
2026-07-11 ASA1333 ANC → SEA Jul 11, 03:10 UTCJul 11, 06:15 UTC3h 5m
2026-07-11 ASA755 - Jul 11, 00:55 UTCJul 11, 01:40 UTC45m
2026-07-10 ASA754 - Jul 10, 22:55 UTCJul 10, 23:45 UTC50m
2026-07-10 ASA1536 JFK → ANC Jul 10, 14:00 UTCJul 10, 21:00 UTC7h 0m
2026-07-10 ASA1535 ANC → JFK Jul 10, 04:05 UTCJul 10, 10:50 UTC6h 45m
2026-07-09 ASA99 SEA → ANC Jul 9, 23:25 UTCJul 10, 02:25 UTC3h 0m
2026-07-09 ASA9441 - Jul 9, 15:50 UTCJul 9, 20:55 UTC5h 5m
2026-07-09 ASA9441 GSO → SEA Jul 9, 15:30 UTCJul 9, 20:50 UTC5h 20m
2026-06-27 ASA9421 - Jun 27, 18:54 UTCJun 27, 23:19 UTC4h 25m
2026-06-27 ASA651 PHX → SEA Jun 27, 15:24 UTCJun 27, 17:14 UTC1h 50m
2026-06-27 ASA91 - Jun 27, 04:29 UTCJun 27, 06:15 UTC1h 45m
2026-06-27 ASA249 DEN → SEA Jun 27, 00:50 UTCJun 27, 03:15 UTC2h 25m
2026-06-26 ASA242 SEA → DEN Jun 26, 20:40 UTCJun 26, 23:00 UTC2h 20m
2026-06-26 ASA705 OAK → SEA Jun 26, 17:41 UTCJun 26, 18:57 UTC1h 16m
2026-06-26 ASA705 OAK → SEA Jun 26, 17:29 UTCJun 26, 19:14 UTC1h 45m
2026-06-26 ASA533 SEA → SFO Jun 26, 14:25 UTCJun 26, 16:05 UTC1h 40m
2026-06-26 ASA371 GEG → SEA Jun 26, 03:15 UTCJun 26, 03:43 UTC28m
2026-06-26 ASA371 GEG → SEA Jun 26, 03:10 UTCJun 26, 04:00 UTC50m
2026-06-26 ASA1433 SEA → GEG Jun 26, 00:59 UTCJun 26, 01:39 UTC40m
2026-06-25 ASA555 MSP → SEA Jun 25, 20:05 UTCJun 25, 23:30 UTC3h 25m
2026-06-25 ASA555 SEA → MSP Jun 25, 16:09 UTCJun 25, 18:55 UTC2h 45m
2026-06-25 ASA1553 ANC → SEA Jun 25, 03:10 UTCJun 25, 06:14 UTC3h 5m
2026-06-25 ASA755 - Jun 25, 00:49 UTCJun 25, 01:35 UTC45m
2026-06-24 ASA754 - Jun 24, 22:55 UTCJun 24, 23:40 UTC45m
2026-06-24 ASA1546 ORD → ANC Jun 24, 15:36 UTCJun 24, 21:25 UTC5h 49m
2026-06-24 ASA1546 ORD → ANC Jun 24, 15:24 UTCJun 24, 20:30 UTC5h 5m
2026-06-24 ASA1543 - Jun 24, 13:24 UTCJun 24, 13:34 UTC10m
2026-06-24 ASA1543 - Jun 24, 07:50 UTCJun 24, 13:34 UTC5h 45m
2026-06-24 ASA1543 ANC → ORD Jun 24, 07:45 UTCJun 24, 13:07 UTC5h 22m
2026-06-24 ASA99 SEA → ANC Jun 24, 03:51 UTCJun 24, 06:24 UTC2h 33m
2026-06-24 ASA99 - Jun 24, 03:35 UTCJun 24, 06:39 UTC3h 5m
2026-06-24 ASA296 LAX → SEA Jun 24, 01:04 UTCJun 24, 02:15 UTC1h 10m
2026-06-23 ASA342 - Jun 23, 22:25 UTCJun 23, 23:14 UTC50m
2026-06-23 ASA235 OAK → PDX Jun 23, 19:59 UTCJun 23, 21:14 UTC1h 15m

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 N805AK page for operator, model, and routing details .

Mode-S AAF47A frequently asked

What is Mode-S code AAF47A?
AAF47A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N805AK.
Where is Mode-S AAF47A registered?
Mode-S code AAF47A 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 AAF47A broadcasting right now?
Yes. Mode-S AAF47A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAF47A, octal 52572172, decimal 11,203,706.
What flights does AAF47A operate?
Mode-S AAF47A has broadcast 20 distinct callsigns, including ASA1354, ASA1353, ASA99, ASA8, ASA258.