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sensors Mode-S transponder

AC36EF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8863Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC36EF
Octal
53033357
Decimal
11,286,255
Country
US
Tail
N8863Q
Type
B38M
Broadcasting now · callsign SWA942 · 34,000 ft
Flights observed
654
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AC36EF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC36EF 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
SWA4061 Southwest Airlines 4 2026-06-13
SWA4009 - 4 2026-07-11
SWA3804 - 4 2026-04-13
SWA29 Southwest Airlines 4 2026-05-01
SWA2032 Southwest Airlines 4 2026-04-14
SWA1331 Southwest Airlines 4 2026-05-15
SWA107 Southwest Airlines 4 2026-05-04
SWA56 - 3 2026-06-28
SWA512 Southwest Airlines 3 2026-05-24
SWA4570 Southwest Airlines 3 2026-06-19
SWA4252 Southwest Airlines 3 2026-04-14
SWA4203 Southwest Airlines 3 2026-04-21
SWA4133 Southwest Airlines 3 2026-04-15
SWA3919 - 3 2026-06-28
SWA3848 Southwest Airlines 3 2026-04-29
SWA3356 Southwest Airlines 3 2026-06-12
SWA3267 - 3 2026-07-11
SWA2550 Southwest Airlines 3 2026-06-14
SWA2192 - 3 2026-07-11
SWA1970 Southwest Airlines 3 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA3027 - Jul 14, 00:20 UTCJul 14, 01:20 UTC1h 0m
2026-07-13 SWA3027 - Jul 13, 21:50 UTCJul 13, 23:15 UTC1h 25m
2026-07-13 SWA2903 - Jul 13, 20:15 UTCJul 13, 20:55 UTC40m
2026-07-13 SWA2903 MDW → STL Jul 13, 20:11 UTCJul 13, 20:53 UTC42m
2026-07-13 SWA4664 - Jul 13, 17:10 UTCJul 13, 19:05 UTC1h 55m
2026-07-13 SWA2834 - Jul 13, 14:10 UTCJul 13, 15:55 UTC1h 45m
2026-07-13 SWA2834 - Jul 13, 11:20 UTCJul 13, 12:55 UTC1h 35m
2026-07-13 SWA4089 - Jul 13, 01:30 UTCJul 13, 03:10 UTC1h 40m
2026-07-12 SWA4357 SJC → MDW Jul 12, 20:26 UTCJul 13, 00:17 UTC3h 52m
2026-07-12 SWA4357 SJC → MDW Jul 12, 20:30 UTCJul 13, 00:20 UTC3h 50m
2026-07-12 SWA3860 - Jul 12, 18:35 UTCJul 12, 19:30 UTC55m
2026-07-12 SWA3860 SNA → SJC Jul 12, 18:34 UTCJul 12, 19:26 UTC52m
2026-07-12 SWA3829 - Jul 12, 15:05 UTCJul 12, 16:20 UTC1h 15m
2026-07-12 SWA3211 PDX → SMF Jul 12, 12:30 UTCJul 12, 13:40 UTC1h 10m
2026-07-12 SWA3853 - Jul 12, 03:05 UTCJul 12, 04:15 UTC1h 10m
2026-07-12 SWA3853 - Jul 12, 01:15 UTCJul 12, 02:10 UTC55m
2026-07-11 SWA4239 - Jul 11, 23:15 UTCJul 11, 23:55 UTC40m
2026-07-11 SWA4009 OAK → LAS Jul 11, 20:51 UTCJul 11, 22:05 UTC1h 14m
2026-07-11 SWA4009 OAK → LAS Jul 11, 20:55 UTCJul 11, 22:05 UTC1h 10m
2026-07-11 SWA4539 - Jul 11, 18:20 UTCJul 11, 19:45 UTC1h 25m
2026-07-11 SWA4539 BOI → OAK Jul 11, 18:16 UTCJul 11, 19:35 UTC1h 19m
2026-07-11 SWA2192 - Jul 11, 17:00 UTCJul 11, 17:15 UTC15m
2026-07-11 SWA2192 - Jul 11, 16:00 UTCJul 11, 16:25 UTC25m
2026-07-11 SWA2192 SJC → LAS Jul 11, 13:45 UTCJul 11, 14:50 UTC1h 5m
2026-07-11 SWA1728 - Jul 11, 05:35 UTCJul 11, 07:40 UTC2h 5m
2026-07-11 SWA1728 DEN → SJC Jul 11, 05:33 UTCJul 11, 07:37 UTC2h 4m
2026-07-11 SWA3267 PHX → DEN Jul 11, 03:01 UTCJul 11, 04:20 UTC1h 20m
2026-07-11 SWA4557 - Jul 11, 00:45 UTCJul 11, 01:35 UTC50m
2026-07-10 SWA4528 - Jul 10, 20:00 UTCJul 10, 23:35 UTC3h 35m
2026-07-10 SWA2744 - Jul 10, 17:10 UTCJul 10, 18:35 UTC1h 25m
2026-07-10 SWA2744 MDW → BWI Jul 10, 17:10 UTCJul 10, 18:34 UTC1h 24m
2026-07-10 SWA4037 MCO → MDW Jul 10, 13:40 UTCJul 10, 16:00 UTC2h 20m
2026-07-10 SWA4483 - Jul 10, 10:20 UTCJul 10, 12:15 UTC1h 55m
2026-07-09 SWA3573 - Jul 9, 23:50 UTCJul 10, 00:30 UTC40m
2026-07-09 SWA4834 - Jul 9, 20:15 UTCJul 9, 22:35 UTC2h 20m
2026-07-09 SWA4834 MCO → SAT Jul 9, 20:11 UTCJul 9, 22:35 UTC2h 24m
2026-07-09 SWA1817 - Jul 9, 15:15 UTCJul 9, 19:10 UTC3h 55m
2026-07-09 SWA2954 - Jul 9, 10:40 UTCJul 9, 13:50 UTC3h 10m
2026-07-09 SWA3396 - Jul 9, 00:55 UTCJul 9, 04:30 UTC3h 35m
2026-07-08 SWA2956 - Jul 8, 20:05 UTCJul 8, 23:45 UTC3h 40m
2026-07-08 SWA1376 DEN → MKE Jul 8, 17:05 UTCJul 8, 19:00 UTC1h 55m
2026-07-08 SWA1376 DEN → MKE Jul 8, 17:00 UTCJul 8, 18:49 UTC1h 49m
2026-07-08 SWA499 BNA → DEN Jul 8, 13:50 UTCJul 8, 16:00 UTC2h 10m
2026-07-08 SWA179 ATL → BNA Jul 8, 11:15 UTCJul 8, 11:55 UTC40m
2026-07-08 SWA179 ATL → BNA Jul 8, 11:12 UTCJul 8, 11:52 UTC40m
2026-07-08 SWA1472 DEN → ATL Jul 8, 02:05 UTCJul 8, 04:40 UTC2h 35m
2026-07-07 SWA1674 - Jul 7, 21:45 UTCJul 8, 00:10 UTC2h 25m
2026-07-07 SWA1674 HOU → DEN Jul 7, 21:43 UTCJul 8, 00:08 UTC2h 26m
2026-07-07 SWA2998 - Jul 7, 19:40 UTCJul 7, 20:35 UTC55m
2026-07-07 SWA2280 LAS → MSY Jul 7, 15:35 UTCJul 7, 18:40 UTC3h 5m

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 N8863Q page for operator, model, and routing details .

Mode-S AC36EF frequently asked

What is Mode-S code AC36EF?
AC36EF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8863Q.
Where is Mode-S AC36EF registered?
Mode-S code AC36EF 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 AC36EF broadcasting right now?
Yes. Mode-S AC36EF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC36EF, octal 53033357, decimal 11,286,255.
What flights does AC36EF operate?
Mode-S AC36EF has broadcast 20 distinct callsigns, including SWA4061, SWA4009, SWA3804, SWA29, SWA2032.