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sensors Mode-S transponder

AC53F8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8938Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC53F8
Octal
53051770
Decimal
11,293,688
Country
US
Tail
N8938Q
Type
B38M
Broadcasting now · callsign SWA3479 · 37,000 ft
Flights observed
587
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AC53F8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC53F8 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
SWA336 Southwest Airlines 5 2026-04-15
SWA2640 - 5 2026-07-12
SWA898 Southwest Airlines 4 2026-05-05
SWA4297 - 4 2026-07-13
SWA4252 Southwest Airlines 4 2026-05-03
SWA4143 - 4 2026-07-09
SWA3475 Southwest Airlines 4 2026-06-01
SWA2918 Southwest Airlines 4 2026-05-16
SWA255 - 4 2026-07-07
SWA2125 Southwest Airlines 4 2026-05-30
SWA1973 - 4 2026-04-13
SWA783 - 3 2026-07-04
SWA713 Southwest Airlines 3 2026-06-13
SWA705 Southwest Airlines 3 2026-05-17
SWA4510 Southwest Airlines 3 2026-06-08
SWA451 Southwest Airlines 3 2026-04-22
SWA4243 Southwest Airlines 3 2026-06-02
SWA3810 Southwest Airlines 3 2026-05-17
SWA3761 Southwest Airlines 3 2026-06-10
SWA3703 Southwest Airlines 3 2026-04-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA3479 - Jul 14, 01:50 UTCJul 14, 02:00 UTC10m
2026-07-13 SWA4905 - Jul 13, 21:50 UTCJul 14, 00:25 UTC2h 35m
2026-07-13 SWA609 - Jul 13, 19:20 UTCJul 13, 20:40 UTC1h 20m
2026-07-13 SWA4297 - Jul 13, 17:15 UTCJul 13, 18:15 UTC1h 0m
2026-07-13 SWA4297 CMH → BNA Jul 13, 17:12 UTCJul 13, 18:06 UTC54m
2026-07-13 SWA3902 STL → CMH Jul 13, 15:00 UTCJul 13, 16:05 UTC1h 5m
2026-07-13 SWA2900 - Jul 13, 13:20 UTCJul 13, 14:00 UTC40m
2026-07-13 SWA2900 MDW → STL Jul 13, 13:16 UTCJul 13, 13:57 UTC41m
2026-07-13 SWA3153 - Jul 13, 07:20 UTCJul 13, 10:50 UTC3h 30m
2026-07-13 SWA1663 - Jul 13, 03:50 UTCJul 13, 05:35 UTC1h 45m
2026-07-13 SWA1663 DEN → ONT Jul 13, 03:46 UTCJul 13, 05:31 UTC1h 45m
2026-07-13 SWA4151 - Jul 13, 00:10 UTCJul 13, 02:05 UTC1h 55m
2026-07-12 SWA2640 - Jul 12, 18:20 UTCJul 12, 22:50 UTC4h 30m
2026-07-12 SWA2640 BWI → SAN Jul 12, 18:17 UTCJul 12, 22:47 UTC4h 31m
2026-07-12 SWA2640 BOS → BWI Jul 12, 16:05 UTCJul 12, 17:10 UTC1h 5m
2026-07-12 SWA1405 - Jul 12, 13:01 UTCJul 12, 14:55 UTC1h 55m
2026-07-12 SWA1405 MDW → BOS Jul 12, 12:59 UTCJul 12, 14:54 UTC1h 55m
2026-07-12 SWA2417 MSP → MDW Jul 12, 10:31 UTCJul 12, 11:35 UTC1h 4m
2026-07-12 SWA2417 MSP → MDW Jul 12, 10:30 UTCJul 12, 11:35 UTC1h 5m
2026-07-12 SWA4690 BNA → MSP Jul 12, 03:10 UTCJul 12, 04:45 UTC1h 35m
2026-07-12 SWA4006 TPA → BNA Jul 12, 00:40 UTCJul 12, 02:10 UTC1h 30m
2026-07-11 SWA4406 - Jul 11, 21:00 UTCJul 11, 23:35 UTC2h 35m
2026-07-11 SWA4406 - Jul 11, 18:25 UTCJul 11, 19:50 UTC1h 25m
2026-07-11 SWA2412 AUS → MDW Jul 11, 15:00 UTCJul 11, 17:10 UTC2h 10m
2026-07-11 SWA2412 AUS → MDW Jul 11, 14:57 UTCJul 11, 17:02 UTC2h 5m
2026-07-11 SWA3417 RDU → AUS Jul 11, 00:40 UTCJul 11, 03:10 UTC2h 30m
2026-07-11 SWA3417 RDU → AUS Jul 11, 00:40 UTCJul 11, 03:10 UTC2h 30m
2026-07-10 SWA4411 - Jul 10, 21:25 UTCJul 10, 23:50 UTC2h 25m
2026-07-10 SWA709 - Jul 10, 17:20 UTCJul 10, 19:30 UTC2h 10m
2026-07-10 SWA2810 SEA → MDW Jul 10, 12:45 UTCJul 10, 16:15 UTC3h 30m
2026-07-10 SWA3429 PHX → SEA Jul 10, 06:10 UTCJul 10, 08:30 UTC2h 20m
2026-07-10 SWA4260 LAS → PHX Jul 10, 01:05 UTCJul 10, 04:30 UTC3h 25m
2026-07-09 SWA4143 - Jul 9, 21:40 UTCJul 10, 00:00 UTC2h 20m
2026-07-09 SWA1140 - Jul 9, 18:05 UTCJul 9, 20:30 UTC2h 25m
2026-07-09 SWA469 - Jul 9, 15:55 UTCJul 9, 16:55 UTC1h 0m
2026-07-09 SWA469 BNA → CHS Jul 9, 15:52 UTCJul 9, 16:54 UTC1h 2m
2026-07-09 SWA3391 - Jul 9, 13:25 UTCJul 9, 14:35 UTC1h 10m
2026-07-09 SWA4630 BNA → PNS Jul 9, 00:45 UTCJul 9, 01:45 UTC1h 0m
2026-07-08 SWA2216 - Jul 8, 21:15 UTCJul 8, 23:00 UTC1h 45m
2026-07-08 SWA2137 IND → RSW Jul 8, 18:05 UTCJul 8, 20:10 UTC2h 5m
2026-07-08 SWA2730 DEN → IND Jul 8, 14:35 UTCJul 8, 16:40 UTC2h 5m
2026-07-08 SWA2759 AUS → DEN Jul 8, 00:15 UTCJul 8, 02:25 UTC2h 10m
2026-07-07 SWA3609 - Jul 7, 19:55 UTCJul 7, 22:50 UTC2h 55m
2026-07-07 SWA4454 - Jul 7, 17:30 UTCJul 7, 18:30 UTC1h 0m
2026-07-07 SWA4454 LAX → SMF Jul 7, 17:29 UTCJul 7, 18:27 UTC58m
2026-07-07 SWA2007 - Jul 7, 13:30 UTCJul 7, 16:25 UTC2h 55m
2026-07-07 SWA2007 - Jul 7, 10:35 UTCJul 7, 12:20 UTC1h 45m
2026-07-07 SWA255 AUS → ATL Jul 7, 04:50 UTCJul 7, 06:40 UTC1h 50m
2026-07-07 SWA255 AUS → ATL Jul 7, 04:49 UTCJul 7, 06:45 UTC1h 56m
2026-07-07 SWA255 - Jul 7, 00:55 UTCJul 7, 03:25 UTC2h 30m

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 N8938Q page for operator, model, and routing details .

Mode-S AC53F8 frequently asked

What is Mode-S code AC53F8?
AC53F8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8938Q.
Where is Mode-S AC53F8 registered?
Mode-S code AC53F8 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 AC53F8 broadcasting right now?
Yes. Mode-S AC53F8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC53F8, octal 53051770, decimal 11,293,688.
What flights does AC53F8 operate?
Mode-S AC53F8 has broadcast 20 distinct callsigns, including SWA336, SWA2640, SWA898, SWA4297, SWA4252.