Apparatus

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sensors Mode-S transponder

AC5700

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8943Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC5700
Octal
53053400
Decimal
11,294,464
Country
US
Tail
N8943Q
Type
B38M
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
735
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S AC5700.

Country allocation

The ICAO 24-bit address AC5700 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
SWA1599 - 6 2026-07-06
SWA1327 - 5 2026-07-06
SWA508 Southwest Airlines 4 2026-06-01
SWA3971 Southwest Airlines 4 2026-05-21
SWA396 - 4 2026-04-13
SWA322 - 4 2026-06-28
SWA2462 - 4 2026-06-24
SWA715 Southwest Airlines 3 2026-05-19
SWA579 - 3 2026-07-07
SWA4669 Southwest Airlines 3 2026-04-16
SWA4609 - 3 2026-06-18
SWA436 Southwest Airlines 3 2026-07-19
SWA4314 Southwest Airlines 3 2026-04-15
SWA4294 Southwest Airlines 3 2026-06-13
SWA4255 Southwest Airlines 3 2026-04-18
SWA4225 - 3 2026-07-13
SWA4204 Southwest Airlines 3 2026-06-02
SWA3919 - 3 2026-06-21
SWA3741 Southwest Airlines 3 2026-07-20
SWA3632 - 3 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1554 DEN → SFO Jul 26, 21:15 UTCJul 26, 22:00 UTC45m
2026-07-26 SWA2398 ATL → MKE Jul 26, 17:35 UTCJul 26, 19:50 UTC2h 15m
2026-07-26 SWA2398 ATL → MKE Jul 26, 17:30 UTCJul 26, 19:42 UTC2h 12m
2026-07-26 SWA4492 TPA → MSY Jul 26, 12:30 UTCJul 26, 16:10 UTC3h 40m
2026-07-26 SWA2253 DEN → SNA Jul 26, 00:30 UTCJul 26, 05:10 UTC4h 40m
2026-07-26 SWA2253 DEN → SNA Jul 26, 00:26 UTCJul 26, 05:05 UTC4h 39m
2026-07-25 SWA2877 LAS → SJC Jul 25, 22:10 UTCJul 25, 22:55 UTC45m
2026-07-25 SWA2877 LAS → SJC Jul 25, 19:50 UTCJul 25, 21:05 UTC1h 15m
2026-07-25 SWA755 MDW → HOU Jul 25, 16:31 UTCJul 25, 18:25 UTC1h 54m
2026-07-25 SWA755 MDW → HOU Jul 25, 16:35 UTCJul 25, 18:25 UTC1h 50m
2026-07-25 SWA4152 BNA → HOU Jul 25, 04:40 UTCJul 25, 06:35 UTC1h 55m
2026-07-25 SWA1845 PVD → MDW Jul 25, 02:50 UTCJul 25, 03:40 UTC50m
2026-07-25 SWA1845 PVD → MDW Jul 25, 02:41 UTCJul 25, 03:37 UTC56m
2026-07-25 SWA2235 LAX → SJC Jul 25, 00:05 UTCJul 25, 00:55 UTC50m
2026-07-24 SWA3644 BNA → DCA Jul 24, 21:45 UTCJul 24, 23:05 UTC1h 20m
2026-07-24 SWA1546 PVD → TPA Jul 24, 15:55 UTCJul 24, 20:05 UTC4h 10m
2026-07-24 SWA4212 BWI → MHT Jul 24, 12:20 UTCJul 24, 14:20 UTC2h 0m
2026-07-24 SWA972 MDW → MSP Jul 24, 00:25 UTCJul 24, 02:45 UTC2h 20m
2026-07-23 SWA4959 MCI → DCA Jul 23, 22:15 UTCJul 23, 23:20 UTC1h 5m
2026-07-23 SWA4959 MCI → DCA Jul 23, 20:35 UTCJul 23, 20:50 UTC15m
2026-07-23 SWA4443 MCO → PVD Jul 23, 18:35 UTCJul 23, 19:00 UTC25m
2026-07-23 SWA4443 MCO → PVD Jul 23, 14:50 UTCJul 23, 16:55 UTC2h 5m
2026-07-23 SWA621 SJC → BWI Jul 23, 05:20 UTCJul 23, 10:00 UTC4h 40m
2026-07-23 SWA1351 ATL → MDW Jul 23, 00:35 UTCJul 23, 03:35 UTC3h 0m
2026-07-22 SWA1351 ATL → MDW Jul 22, 21:20 UTCJul 22, 23:15 UTC1h 55m
2026-07-22 SWA4036 DAL → ONT Jul 22, 18:20 UTCJul 22, 20:05 UTC1h 45m
2026-07-22 SWA4432 DEN → AUS Jul 22, 13:30 UTCJul 22, 16:25 UTC2h 55m
2026-07-22 SWA4432 DEN → AUS Jul 22, 13:27 UTCJul 22, 16:23 UTC2h 57m
2026-07-22 SWA3241 - Jul 22, 05:05 UTCJul 22, 05:25 UTC20m
2026-07-22 SWA2065 SAN → OAK Jul 22, 01:25 UTCJul 22, 03:35 UTC2h 10m
2026-07-21 SWA4654 LAX → LAS Jul 21, 22:20 UTCJul 22, 00:15 UTC1h 55m
2026-07-21 SWA4918 CMH → MCO Jul 21, 19:20 UTCJul 21, 21:10 UTC1h 50m
2026-07-21 SWA4918 CMH → MCO Jul 21, 19:19 UTCJul 21, 21:06 UTC1h 48m
2026-07-21 SWA1889 SJC → SAN Jul 21, 15:50 UTCJul 21, 18:00 UTC2h 10m
2026-07-21 SWA1889 SJC → SAN Jul 21, 15:49 UTCJul 21, 17:57 UTC2h 8m
2026-07-21 SWA4668 SJC → BUR Jul 21, 12:25 UTCJul 21, 14:45 UTC2h 20m
2026-07-21 SWA4668 SJC → BUR Jul 21, 12:24 UTCJul 21, 14:34 UTC2h 10m
2026-07-21 SWA1033 BZE → HOU Jul 21, 01:10 UTCJul 21, 02:00 UTC50m
2026-07-21 SWA1033 BZE → HOU Jul 21, 01:08 UTCJul 21, 02:00 UTC52m
2026-07-20 SWA3333 - Jul 20, 23:10 UTCJul 21, 00:10 UTC1h 0m
2026-07-20 SWA3333 RNO → LAS Jul 20, 23:04 UTCJul 21, 00:03 UTC59m
2026-07-20 SWA1221 DCA → HOU Jul 20, 21:10 UTCJul 20, 22:00 UTC50m
2026-07-20 SWA323 SBA → OAK Jul 20, 17:30 UTCJul 20, 19:45 UTC2h 15m
2026-07-20 SWA3034 MCO → MSY Jul 20, 12:45 UTCJul 20, 16:10 UTC3h 25m
2026-07-20 SWA1650 ALB → MCO Jul 20, 04:30 UTCJul 20, 06:30 UTC2h 0m
2026-07-20 SWA3741 BDL → BWI Jul 20, 02:10 UTCJul 20, 03:10 UTC1h 0m
2026-07-19 SWA2411 SJC → LIH Jul 19, 23:40 UTCJul 20, 01:05 UTC1h 25m
2026-07-19 SWA4913 - Jul 19, 21:25 UTCJul 19, 22:30 UTC1h 5m
2026-07-19 SWA436 BWI → ATL Jul 19, 19:15 UTCJul 19, 20:05 UTC50m
2026-07-19 SWA436 BWI → ATL Jul 19, 14:50 UTCJul 19, 18:00 UTC3h 10m

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 N8943Q page for operator, model, and routing details .

Mode-S AC5700 frequently asked

What is Mode-S code AC5700?
AC5700 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8943Q.
Where is Mode-S AC5700 registered?
Mode-S code AC5700 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 AC5700 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC5700, octal 53053400, decimal 11,294,464.
What flights does AC5700 operate?
Mode-S AC5700 has broadcast 20 distinct callsigns, including SWA1599, SWA1327, SWA508, SWA3971, SWA396.