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sensors Mode-S transponder

AC1675

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8780Q · operated by SOUTHWEST AIRLINES CO

Hex
AC1675
Octal
53013165
Decimal
11,277,941
Country
US
Tail
N8780Q
Type
B38M
No current signal · last broadcast 6h ago
Flights observed
609
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S AC1675.

Country allocation

The ICAO 24-bit address AC1675 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
SWA1881 Southwest Airlines 7 2026-05-25
SWA4209 Southwest Airlines 5 2026-05-12
SWA1122 - 5 2026-06-15
SWA2848 Southwest Airlines 4 2026-06-11
SWA2666 Southwest Airlines 4 2026-05-14
SWA1784 Southwest Airlines 4 2026-06-04
SWA1575 - 4 2026-07-11
SWA862 - 3 2026-07-03
SWA732 Southwest Airlines 3 2026-05-14
SWA4527 - 3 2026-07-08
SWA4514 Southwest Airlines 3 2026-06-11
SWA4335 Southwest Airlines 3 2026-05-31
SWA4112 - 3 2026-07-11
SWA3936 Southwest Airlines 3 2026-04-16
SWA3659 Southwest Airlines 3 2026-05-30
SWA3597 - 3 2026-07-03
SWA3559 Southwest Airlines 3 2026-05-03
SWA3439 Southwest Airlines 3 2026-06-03
SWA3378 Southwest Airlines 3 2026-04-16
SWA3354 Southwest Airlines 3 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SWA4109 - Jul 13, 21:50 UTCJul 13, 22:05 UTC15m
2026-07-13 SWA4109 - Jul 13, 16:30 UTCJul 13, 17:50 UTC1h 20m
2026-07-13 SWA3039 - Jul 13, 13:45 UTCJul 13, 14:25 UTC40m
2026-07-13 SWA3126 LAS → PHX Jul 13, 07:01 UTCJul 13, 07:45 UTC45m
2026-07-13 SWA3126 - Jul 13, 02:15 UTCJul 13, 05:15 UTC3h 0m
2026-07-12 SWA1999 - Jul 12, 20:40 UTCJul 13, 00:20 UTC3h 40m
2026-07-12 SWA841 - Jul 12, 15:15 UTCJul 12, 16:50 UTC1h 35m
2026-07-12 SWA841 BWI → PUJ Jul 12, 15:11 UTCJul 12, 18:37 UTC3h 26m
2026-07-12 SWA1956 - Jul 12, 11:30 UTCJul 12, 13:30 UTC2h 0m
2026-07-11 SWA571 - Jul 11, 23:55 UTCJul 12, 01:25 UTC1h 30m
2026-07-11 SWA571 BNA → MCO Jul 11, 23:55 UTCJul 12, 01:20 UTC1h 25m
2026-07-11 SWA1789 - Jul 11, 19:10 UTCJul 11, 22:55 UTC3h 45m
2026-07-11 SWA4958 SJC → LGB Jul 11, 17:07 UTCJul 11, 18:06 UTC59m
2026-07-11 SWA4958 SJC → LGB Jul 11, 17:10 UTCJul 11, 18:10 UTC1h 0m
2026-07-11 SWA713 LAS → SJC Jul 11, 15:00 UTCJul 11, 15:55 UTC55m
2026-07-11 SWA4112 ANC → LAS Jul 11, 08:35 UTCJul 11, 13:25 UTC4h 50m
2026-07-11 SWA1575 LAS → ANC Jul 11, 01:55 UTCJul 11, 06:30 UTC4h 35m
2026-07-11 SWA1575 LAS → ANC Jul 11, 01:52 UTCJul 11, 06:29 UTC4h 37m
2026-07-10 SWA4078 - Jul 10, 23:40 UTCJul 11, 00:30 UTC50m
2026-07-10 SWA4078 - Jul 10, 19:35 UTCJul 10, 22:25 UTC2h 50m
2026-07-10 SWA2263 DEN → AUS Jul 10, 16:35 UTCJul 10, 18:20 UTC1h 45m
2026-07-10 SWA2263 DEN → AUS Jul 10, 16:34 UTCJul 10, 18:16 UTC1h 42m
2026-07-10 SWA3195 PDX → DEN Jul 10, 13:00 UTCJul 10, 15:05 UTC2h 5m
2026-07-10 SWA3175 PHX → PDX Jul 10, 06:00 UTCJul 10, 08:15 UTC2h 15m
2026-07-10 SWA4285 SMF → PHX Jul 10, 02:55 UTCJul 10, 04:20 UTC1h 25m
2026-07-10 SWA4285 SMF → PHX Jul 10, 02:53 UTCJul 10, 04:19 UTC1h 26m
2026-07-10 SWA1942 - Jul 10, 01:10 UTCJul 10, 01:50 UTC40m
2026-07-09 SWA1942 - Jul 9, 21:15 UTCJul 9, 21:35 UTC20m
2026-07-09 SWA1942 HNL → SMF Jul 9, 21:14 UTCJul 10, 01:50 UTC4h 36m
2026-07-09 SWA456 LGB → HNL Jul 9, 14:10 UTCJul 9, 19:40 UTC5h 30m
2026-07-09 SWA456 LGB → HNL Jul 9, 14:07 UTCJul 9, 19:35 UTC5h 28m
2026-07-08 SWA4971 - Jul 8, 22:55 UTCJul 9, 03:35 UTC4h 40m
2026-07-08 SWA4527 - Jul 8, 20:45 UTCJul 8, 20:55 UTC10m
2026-07-08 SWA4527 - Jul 8, 15:30 UTCJul 8, 16:10 UTC40m
2026-07-08 SWA4527 ONT → HNL Jul 8, 15:26 UTCJul 8, 20:57 UTC5h 31m
2026-07-08 SWA2301 LAS → ONT Jul 8, 05:15 UTCJul 8, 05:49 UTC34m
2026-07-08 SWA2301 LAS → ONT Jul 8, 05:15 UTCJul 8, 05:55 UTC40m
2026-07-07 SWA1914 - Jul 7, 22:15 UTCJul 8, 03:30 UTC5h 15m
2026-07-07 SWA3093 BDL → BWI Jul 7, 20:05 UTCJul 7, 20:30 UTC25m
2026-07-07 SWA3093 BDL → BWI Jul 7, 19:58 UTCJul 7, 20:30 UTC32m
2026-07-07 SWA574 MCI → LAX Jul 7, 18:20 UTCJul 7, 18:40 UTC20m
2026-07-07 SWA1925 - Jul 7, 07:00 UTCJul 7, 07:10 UTC10m
2026-07-07 SWA1925 HNL → LIH Jul 7, 06:58 UTCJul 7, 07:19 UTC21m
2026-07-07 SWA2152 - Jul 7, 05:15 UTCJul 7, 05:45 UTC30m
2026-07-07 SWA2152 ITO → HNL Jul 7, 05:05 UTCJul 7, 05:43 UTC38m
2026-07-07 SWA1906 - Jul 7, 03:30 UTCJul 7, 03:50 UTC20m
2026-07-07 SWA1906 HNL → ITO Jul 7, 03:25 UTCJul 7, 04:01 UTC36m
2026-07-07 SWA661 - Jul 7, 02:05 UTCJul 7, 02:15 UTC10m
2026-07-06 SWA1923 - Jul 6, 23:50 UTCJul 7, 00:00 UTC10m
2026-07-06 SWA1921 SAN → LAS Jul 6, 20:00 UTCJul 6, 20:10 UTC10m

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 N8780Q page for operator, model, and routing details .

Mode-S AC1675 frequently asked

What is Mode-S code AC1675?
AC1675 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8780Q.
Where is Mode-S AC1675 registered?
Mode-S code AC1675 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 AC1675 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC1675, octal 53013165, decimal 11,277,941.
What flights does AC1675 operate?
Mode-S AC1675 has broadcast 20 distinct callsigns, including SWA1881, SWA4209, SWA1122, SWA2848, SWA2666.