Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC53B2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8936Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC53B2
Octal
53051662
Decimal
11,293,618
Country
US
Tail
N8936Q
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
679
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AC53B2.

Country allocation

The ICAO 24-bit address AC53B2 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
SWA756 - 4 2026-07-11
SWA4472 Southwest Airlines 4 2026-05-03
SWA4341 Southwest Airlines 4 2026-06-10
SWA3042 Southwest Airlines 4 2026-06-08
SWA2462 - 4 2026-06-22
SWA2367 - 4 2026-06-14
SWA1498 - 4 2026-06-29
SWA626 - 3 2026-06-29
SWA563 - 3 2026-07-03
SWA4669 Southwest Airlines 3 2026-05-21
SWA4509 Southwest Airlines 3 2026-04-24
SWA4299 - 3 2026-07-07
SWA4206 - 3 2026-07-05
SWA3853 Southwest Airlines 3 2026-04-15
SWA3848 Southwest Airlines 3 2026-04-24
SWA3756 Southwest Airlines 3 2026-04-23
SWA3718 - 3 2026-07-13
SWA3462 Southwest Airlines 3 2026-05-23
SWA3245 - 3 2026-06-29
SWA3218 - 3 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA1188 - Jul 14, 18:25 UTCJul 14, 18:30 UTC5m
2026-07-14 SWA1188 - Jul 14, 12:50 UTCJul 14, 16:50 UTC4h 0m
2026-07-14 SWA420 - Jul 14, 10:15 UTCJul 14, 11:15 UTC1h 0m
2026-07-14 SWA972 MCO → BDL Jul 14, 02:10 UTCJul 14, 04:45 UTC2h 35m
2026-07-13 SWA3777 BWI → MCO Jul 13, 23:00 UTCJul 14, 01:00 UTC2h 0m
2026-07-13 SWA3718 - Jul 13, 18:20 UTCJul 13, 20:05 UTC1h 45m
2026-07-13 SWA3718 - Jul 13, 16:30 UTCJul 13, 16:45 UTC15m
2026-07-13 SWA3718 SJU → BWI Jul 13, 16:29 UTCJul 13, 20:00 UTC3h 31m
2026-07-13 SWA343 - Jul 13, 15:05 UTCJul 13, 15:15 UTC10m
2026-07-13 SWA343 - Jul 13, 12:35 UTCJul 13, 13:20 UTC45m
2026-07-13 SWA2090 - Jul 13, 02:25 UTCJul 13, 04:05 UTC1h 40m
2026-07-12 SWA3212 - Jul 12, 21:55 UTCJul 13, 00:40 UTC2h 45m
2026-07-12 SWA1783 - Jul 12, 19:15 UTCJul 12, 20:15 UTC1h 0m
2026-07-12 SWA1424 - Jul 12, 14:40 UTCJul 12, 17:35 UTC2h 55m
2026-07-12 SWA1424 MCO → ELP Jul 12, 14:41 UTCJul 12, 17:47 UTC3h 6m
2026-07-12 SWA4508 PHX → MCO Jul 12, 06:25 UTCJul 12, 10:15 UTC3h 50m
2026-07-12 SWA4508 PHX → MCO Jul 12, 06:22 UTCJul 12, 10:16 UTC3h 54m
2026-07-12 SWA1202 - Jul 12, 00:01 UTCJul 12, 03:25 UTC3h 25m
2026-07-11 SWA921 - Jul 11, 22:05 UTCJul 11, 23:00 UTC55m
2026-07-11 SWA3220 - Jul 11, 18:55 UTCJul 11, 20:55 UTC2h 0m
2026-07-11 SWA3220 MSP → BWI Jul 11, 18:54 UTCJul 11, 20:56 UTC2h 2m
2026-07-11 SWA1253 BWI → MSP Jul 11, 14:55 UTCJul 11, 17:10 UTC2h 15m
2026-07-11 SWA756 - Jul 11, 11:55 UTCJul 11, 12:40 UTC45m
2026-07-11 SWA4110 MDW → BUF Jul 11, 00:45 UTCJul 11, 01:45 UTC1h 0m
2026-07-10 SWA360 AUS → MDW Jul 10, 21:30 UTCJul 10, 23:30 UTC2h 0m
2026-07-10 SWA4856 - Jul 10, 19:10 UTCJul 10, 20:05 UTC55m
2026-07-10 SWA4856 ELP → AUS Jul 10, 18:51 UTCJul 10, 20:04 UTC1h 13m
2026-07-10 SWA1310 - Jul 10, 16:30 UTCJul 10, 17:30 UTC1h 0m
2026-07-10 SWA168 - Jul 10, 12:50 UTCJul 10, 13:35 UTC45m
2026-07-10 SWA1260 - Jul 10, 03:30 UTCJul 10, 04:10 UTC40m
2026-07-10 SWA1260 LAS → DAL Jul 10, 00:00 UTCJul 10, 02:30 UTC2h 30m
2026-07-09 SWA4359 STL → LAS Jul 9, 20:00 UTCJul 9, 23:00 UTC3h 0m
2026-07-09 SWA2473 LGA → STL Jul 9, 16:45 UTCJul 9, 18:45 UTC2h 0m
2026-07-09 SWA2038 MDW → LGA Jul 9, 13:35 UTCJul 9, 15:15 UTC1h 40m
2026-07-09 SWA2038 MDW → LGA Jul 9, 13:35 UTCJul 9, 15:03 UTC1h 28m
2026-07-09 SWA3153 POC → MDW Jul 9, 07:20 UTCJul 9, 10:40 UTC3h 20m
2026-07-09 SWA1967 - Jul 9, 02:40 UTCJul 9, 05:25 UTC2h 45m
2026-07-09 SWA1967 HOU → ONT Jul 9, 02:38 UTCJul 9, 05:19 UTC2h 41m
2026-07-08 SWA3532 - Jul 8, 21:30 UTCJul 9, 00:50 UTC3h 20m
2026-07-08 SWA1242 LAS → SJC Jul 8, 19:15 UTCJul 8, 20:25 UTC1h 10m
2026-07-08 SWA1242 LAS → SJC Jul 8, 19:15 UTCJul 8, 20:19 UTC1h 4m
2026-07-08 SWA1561 DEN → LAS Jul 8, 16:30 UTCJul 8, 17:55 UTC1h 25m
2026-07-08 SWA3195 PDX → DEN Jul 8, 12:50 UTCJul 8, 14:50 UTC2h 0m
2026-07-08 SWA2852 - Jul 8, 03:40 UTCJul 8, 07:25 UTC3h 45m
2026-07-08 SWA1513 - Jul 8, 00:50 UTCJul 8, 02:10 UTC1h 20m
2026-07-07 SWA4299 - Jul 7, 21:20 UTCJul 7, 23:30 UTC2h 10m
2026-07-07 SWA3847 TPA → DAL Jul 7, 17:45 UTCJul 7, 19:55 UTC2h 10m
2026-07-07 SWA2773 RDU → TPA Jul 7, 14:45 UTCJul 7, 16:30 UTC1h 45m
2026-07-07 SWA3942 - Jul 7, 12:45 UTCJul 7, 13:40 UTC55m
2026-07-07 SWA3942 BWI → RDU Jul 7, 12:44 UTCJul 7, 13:31 UTC47m

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 N8936Q page for operator, model, and routing details .

Mode-S AC53B2 frequently asked

What is Mode-S code AC53B2?
AC53B2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8936Q.
Where is Mode-S AC53B2 registered?
Mode-S code AC53B2 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 AC53B2 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC53B2, octal 53051662, decimal 11,293,618.
What flights does AC53B2 operate?
Mode-S AC53B2 has broadcast 20 distinct callsigns, including SWA756, SWA4472, SWA4341, SWA3042, SWA2462.