Apparatus

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sensors Mode-S transponder

AC1042

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8769Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC1042
Octal
53010102
Decimal
11,276,354
Country
US
Tail
N8769Q
Type
B38M
No current signal · last broadcast Jul 26, 18:35 UTC
Flights observed
690
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:35 UTC

Last known position

Most recent position reported by Mode-S AC1042.

Country allocation

The ICAO 24-bit address AC1042 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
SWA2415 Southwest Airlines 6 2026-04-18
SWA479 Southwest Airlines 5 2026-06-15
SWA2525 - 5 2026-07-20
SWA2122 - 5 2026-06-27
SWA1526 Southwest Airlines 5 2026-07-22
SWA1178 Southwest Airlines 5 2026-04-30
SWA4994 Southwest Airlines 4 2026-06-27
SWA4787 - 4 2026-04-13
SWA275 Southwest Airlines 4 2026-05-25
SWA245 Southwest Airlines 4 2026-04-17
SWA2013 Southwest Airlines 4 2026-06-09
SWA1933 Southwest Airlines 4 2026-07-25
SWA1918 Southwest Airlines 4 2026-05-10
SWA1881 Southwest Airlines 4 2026-05-11
SWA1340 - 4 2026-07-13
SWA4956 - 3 2026-07-13
SWA489 Southwest Airlines 3 2026-07-22
SWA46 Southwest Airlines 3 2026-07-21
SWA456 - 3 2026-06-23
SWA4527 - 3 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4109 OAK → PSP Jul 26, 17:30 UTCJul 26, 18:35 UTC1h 5m
2026-07-26 SWA4112 PHX → HOU Jul 26, 08:05 UTCJul 26, 12:50 UTC4h 45m
2026-07-26 SWA4112 PHX → HOU Jul 26, 08:01 UTCJul 26, 12:32 UTC4h 32m
2026-07-26 SWA1575 DAL → LGA Jul 26, 01:45 UTCJul 26, 06:15 UTC4h 30m
2026-07-25 SWA1913 CVG → DEN Jul 25, 21:50 UTCJul 25, 23:25 UTC1h 35m
2026-07-25 SWA1913 CVG → DEN Jul 25, 18:20 UTCJul 25, 18:35 UTC15m
2026-07-25 SWA3091 MDW → CVG Jul 25, 16:10 UTCJul 25, 16:30 UTC20m
2026-07-25 SWA508 SJC → PHX Jul 25, 06:45 UTCJul 25, 07:05 UTC20m
2026-07-25 SWA3098 SFO → PHX Jul 25, 05:10 UTCJul 25, 05:30 UTC20m
2026-07-25 SWA3098 SFO → PHX Jul 25, 05:05 UTCJul 25, 05:30 UTC25m
2026-07-25 SWA1933 LGB → LAS Jul 25, 03:45 UTCJul 25, 04:05 UTC20m
2026-07-25 SWA1933 LGB → LAS Jul 25, 03:42 UTCJul 25, 04:05 UTC23m
2026-07-25 SWA2169 BNA → MDW Jul 25, 01:48 UTCJul 25, 02:14 UTC26m
2026-07-25 SWA2169 BNA → MDW Jul 25, 01:50 UTCJul 25, 02:20 UTC30m
2026-07-25 SWA561 SJC → HNL Jul 25, 00:05 UTCJul 25, 00:35 UTC30m
2026-07-25 SWA561 SJC → HNL Jul 25, 00:01 UTCJul 25, 00:30 UTC29m
2026-07-24 SWA2168 SAN → OAK Jul 24, 21:45 UTCJul 24, 22:14 UTC29m
2026-07-24 SWA2168 SAN → OAK Jul 24, 21:45 UTCJul 24, 22:15 UTC30m
2026-07-24 SWA675 DAL → ATL Jul 24, 19:55 UTCJul 24, 20:25 UTC30m
2026-07-24 SWA675 DAL → ATL Jul 24, 19:50 UTCJul 24, 20:22 UTC32m
2026-07-24 SWA2149 ORD → MCO Jul 24, 18:20 UTCJul 24, 18:45 UTC25m
2026-07-24 SWA1902 LAS → OAK Jul 24, 16:10 UTCJul 24, 16:35 UTC25m
2026-07-24 SWA377 MKE → DEN Jul 24, 02:10 UTCJul 24, 07:35 UTC5h 25m
2026-07-24 SWA377 MKE → DEN Jul 24, 02:08 UTCJul 24, 07:30 UTC5h 22m
2026-07-23 SWA3053 SAN → SFO Jul 23, 23:30 UTCJul 24, 00:30 UTC1h 0m
2026-07-23 SWA3053 SAN → SFO Jul 23, 23:27 UTCJul 24, 00:23 UTC56m
2026-07-23 SWA4488 - Jul 23, 21:10 UTCJul 23, 22:20 UTC1h 10m
2026-07-23 SWA4672 SMF → DAL Jul 23, 18:00 UTCJul 23, 19:55 UTC1h 55m
2026-07-23 SWA1377 ORD → PHX Jul 23, 13:15 UTCJul 23, 16:40 UTC3h 25m
2026-07-23 SWA485 BOI → OAK Jul 23, 10:25 UTCJul 23, 11:50 UTC1h 25m
2026-07-23 SWA4694 DAL → PHX Jul 23, 00:25 UTCJul 23, 01:30 UTC1h 5m
2026-07-22 SWA862 MIA → AUS Jul 22, 22:40 UTCJul 22, 23:35 UTC55m
2026-07-22 SWA862 MIA → AUS Jul 22, 22:36 UTCJul 22, 23:30 UTC54m
2026-07-22 SWA1526 SJC → BUR Jul 22, 20:15 UTCJul 22, 21:15 UTC1h 0m
2026-07-22 SWA1526 SJC → BUR Jul 22, 20:12 UTCJul 22, 21:17 UTC1h 5m
2026-07-22 SWA1526 SJC → BUR Jul 22, 18:15 UTCJul 22, 18:50 UTC35m
2026-07-22 SWA4077 HOU → PHX Jul 22, 14:50 UTCJul 22, 17:00 UTC2h 10m
2026-07-22 SWA1760 LAX → OAK Jul 22, 12:00 UTCJul 22, 13:45 UTC1h 45m
2026-07-22 SWA3233 TPA → CMH Jul 22, 05:16 UTCJul 22, 06:40 UTC1h 24m
2026-07-22 SWA489 SEA → OAK Jul 22, 02:20 UTCJul 22, 04:20 UTC2h 0m
2026-07-21 SWA489 SEA → OAK Jul 21, 23:50 UTCJul 22, 01:15 UTC1h 25m
2026-07-21 SWA387 CUN → BNA Jul 21, 18:50 UTCJul 21, 22:00 UTC3h 10m
2026-07-21 SWA387 CUN → BNA Jul 21, 18:49 UTCJul 21, 21:59 UTC3h 10m
2026-07-21 SWA1607 BWI → CUN Jul 21, 14:10 UTCJul 21, 17:25 UTC3h 15m
2026-07-21 SWA513 MCO → MDW Jul 21, 10:10 UTCJul 21, 12:15 UTC2h 5m
2026-07-21 SWA513 MCO → MDW Jul 21, 10:06 UTCJul 21, 12:11 UTC2h 6m
2026-07-21 SWA46 HOU → DAL Jul 21, 00:35 UTCJul 21, 03:05 UTC2h 30m
2026-07-21 SWA46 HOU → DAL Jul 21, 00:34 UTCJul 21, 03:01 UTC2h 27m
2026-07-20 SWA46 HOU → DAL Jul 20, 23:00 UTCJul 20, 23:40 UTC40m
2026-07-20 SWA2525 - Jul 20, 20:25 UTCJul 20, 21:20 UTC55m

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 N8769Q page for operator, model, and routing details .

Mode-S AC1042 frequently asked

What is Mode-S code AC1042?
AC1042 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8769Q.
Where is Mode-S AC1042 registered?
Mode-S code AC1042 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 AC1042 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC1042, octal 53010102, decimal 11,276,354.
What flights does AC1042 operate?
Mode-S AC1042 has broadcast 20 distinct callsigns, including SWA2415, SWA479, SWA2525, SWA2122, SWA1526.