Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A6F96C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N549AS · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
A6F96C
Octal
51574554
Decimal
10,942,828
Country
US
Tail
N549AS
Type
B738
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
494
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S A6F96C.

Country allocation

The ICAO 24-bit address A6F96C 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
ASA759 Alaska Airlines 7 2026-07-26
ASA358 Alaska Airlines 7 2026-04-14
ASA783 Alaska Airlines 6 2026-07-20
ASA702 - 6 2026-07-13
ASA585 Alaska Airlines 6 2026-05-19
ASA388 Alaska Airlines 6 2026-04-18
ASA1404 Alaska Airlines 6 2026-06-07
ASA1378 Alaska Airlines 5 2026-06-07
ASA1319 Alaska Airlines 5 2026-04-15
ASA773 Alaska Airlines 4 2026-05-22
ASA750 Alaska Airlines 4 2026-06-28
ASA719 - 4 2026-06-23
ASA67 Alaska Airlines 4 2026-06-12
ASA548 Alaska Airlines 4 2026-07-26
ASA452 Alaska Airlines 4 2026-06-09
ASA324 - 4 2026-07-21
ASA249 - 4 2026-06-24
ASA230 - 4 2026-07-16
ASA1365 Alaska Airlines 4 2026-05-02
ASA92 Alaska Airlines 3 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA548 MZT → SFO Jul 26, 19:25 UTCJul 26, 21:45 UTC2h 20m
2026-07-26 ASA759 SFO → LAS Jul 26, 15:35 UTCJul 26, 18:00 UTC2h 25m
2026-07-26 ASA304 SEA → LAX Jul 26, 00:45 UTCJul 26, 06:35 UTC5h 51m
2026-07-26 ASA304 SEA → LAX Jul 26, 00:43 UTCJul 26, 06:24 UTC5h 41m
2026-07-25 ASA306 PDX → SFO Jul 25, 18:35 UTCJul 25, 23:10 UTC4h 35m
2026-07-25 ASA703 LAS → LAX Jul 25, 02:30 UTCJul 25, 04:45 UTC2h 15m
2026-07-24 ASA331 ORD → SFO Jul 24, 22:55 UTCJul 25, 01:10 UTC2h 15m
2026-07-24 ASA1322 STS → SEA Jul 24, 20:05 UTCJul 24, 21:30 UTC1h 25m
2026-07-24 ASA1321 SEA → STS Jul 24, 17:15 UTCJul 24, 18:55 UTC1h 40m
2026-07-24 ASA282 SAN → EWR Jul 24, 03:50 UTCJul 24, 05:55 UTC2h 5m
2026-07-24 ASA393 JFK → SAN Jul 24, 01:00 UTCJul 24, 02:35 UTC1h 35m
2026-07-23 ASA365 SFO → LAS Jul 23, 19:00 UTCJul 23, 23:10 UTC4h 10m
2026-07-23 ASA424 SEA → BOS Jul 23, 03:20 UTCJul 23, 06:45 UTC3h 25m
2026-07-23 ASA424 SEA → BOS Jul 23, 03:20 UTCJul 23, 06:42 UTC3h 22m
2026-07-22 ASA601 SEA → SFO Jul 22, 22:00 UTCJul 22, 23:15 UTC1h 15m
2026-07-22 ASA273 PDX → SFO Jul 22, 19:10 UTCJul 22, 20:25 UTC1h 15m
2026-07-22 ASA317 DEN → SEA Jul 22, 14:50 UTCJul 22, 17:05 UTC2h 15m
2026-07-22 ASA1627 PDX → DEN Jul 22, 01:20 UTCJul 22, 03:45 UTC2h 25m
2026-07-21 ASA325 - Jul 21, 20:10 UTCJul 22, 00:05 UTC3h 55m
2026-07-21 ASA324 - Jul 21, 15:20 UTCJul 21, 18:40 UTC3h 20m
2026-07-20 ASA783 ATL → PDX Jul 20, 22:25 UTCJul 21, 02:50 UTC4h 25m
2026-07-20 ASA334 LAX → PDX Jul 20, 16:30 UTCJul 20, 20:40 UTC4h 10m
2026-07-20 ASA594 - Jul 20, 07:00 UTCJul 20, 08:55 UTC1h 55m
2026-07-20 ASA594 ONT → SEA Jul 20, 06:56 UTCJul 20, 08:54 UTC1h 58m
2026-07-20 ASA592 CUN → SFO Jul 20, 03:45 UTCJul 20, 06:05 UTC2h 20m
2026-07-19 ASA330 ABQ → SEA Jul 19, 21:00 UTCJul 19, 23:45 UTC2h 45m
2026-07-19 ASA327 SEA → ABQ Jul 19, 17:20 UTCJul 19, 19:45 UTC2h 25m
2026-07-19 ASA701 LAS → SEA Jul 19, 13:40 UTCJul 19, 15:40 UTC2h 0m
2026-07-19 ASA704 SEA → LAS Jul 19, 04:08 UTCJul 19, 06:09 UTC2h 1m
2026-07-19 ASA704 SEA → LAS Jul 19, 04:05 UTCJul 19, 06:15 UTC2h 10m
2026-07-18 ASA313 - Jul 18, 22:15 UTCJul 19, 02:35 UTC4h 20m
2026-07-18 ASA313 SEA → DTW Jul 18, 17:20 UTCJul 18, 21:00 UTC3h 40m
2026-07-17 ASA44 - Jul 17, 21:30 UTCJul 17, 22:25 UTC55m
2026-07-17 ASA44 BET → ANC Jul 17, 21:19 UTCJul 18, 21:00 UTC23h 42m
2026-07-17 ASA43 - Jul 17, 19:05 UTCJul 17, 19:45 UTC40m
2026-07-17 ASA1613 JNU → ANC Jul 17, 05:15 UTCJul 17, 06:40 UTC1h 25m
2026-07-17 ASA1537 - Jul 17, 02:15 UTCJul 17, 03:30 UTC1h 15m
2026-07-16 ASA657 SEA → ANC Jul 16, 22:05 UTCJul 17, 01:15 UTC3h 10m
2026-07-16 ASA230 - Jul 16, 13:40 UTCJul 16, 19:05 UTC5h 25m
2026-07-16 ASA314 SEA → EWR Jul 16, 06:00 UTCJul 16, 10:29 UTC4h 30m
2026-07-16 ASA296 - Jul 16, 01:05 UTCJul 16, 02:05 UTC1h 0m
2026-07-15 ASA342 - Jul 15, 22:15 UTCJul 15, 23:10 UTC55m
2026-07-15 ASA1355 - Jul 15, 18:40 UTCJul 15, 20:30 UTC1h 50m
2026-07-15 ASA1611 GEG → LAX Jul 15, 13:20 UTCJul 15, 15:45 UTC2h 25m
2026-07-15 ASA1614 LAX → GEG Jul 15, 04:16 UTCJul 15, 05:45 UTC1h 29m
2026-07-15 ASA1614 - Jul 15, 03:55 UTCJul 15, 05:50 UTC1h 55m
2026-07-15 ASA1300 - Jul 15, 00:10 UTCJul 15, 02:40 UTC2h 30m
2026-07-14 ASA579 - Jul 14, 18:50 UTCJul 14, 22:30 UTC3h 40m
2026-07-14 ASA578 SEA → ORD Jul 14, 13:28 UTCJul 14, 16:10 UTC2h 42m
2026-07-14 ASA578 - Jul 14, 13:05 UTCJul 14, 13:10 UTC5m

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 N549AS page for operator, model, and routing details .

Mode-S A6F96C frequently asked

What is Mode-S code A6F96C?
A6F96C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N549AS.
Where is Mode-S A6F96C registered?
Mode-S code A6F96C 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 A6F96C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6F96C, octal 51574554, decimal 10,942,828.
What flights does A6F96C operate?
Mode-S A6F96C has broadcast 20 distinct callsigns, including ASA759, ASA358, ASA783, ASA702, ASA585.