Apparatus

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sensors Mode-S transponder

AC48AC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8907L · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC48AC
Octal
53044254
Decimal
11,290,796
Country
US
Tail
N8907L
Type
B38M
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
753
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S AC48AC.

Country allocation

The ICAO 24-bit address AC48AC 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
SWA2462 - 6 2026-04-13
SWA910 - 5 2026-07-05
SWA921 - 4 2026-07-14
SWA2686 - 4 2026-07-16
SWA2369 Southwest Airlines 4 2026-06-16
SWA1718 Southwest Airlines 4 2026-05-14
SWA1092 Southwest Airlines 4 2026-06-12
SWA1091 - 4 2026-06-22
SWA997 - 3 2026-06-22
SWA939 - 3 2026-07-14
SWA812 Southwest Airlines 3 2026-04-15
SWA719 Southwest Airlines 3 2026-04-18
SWA665 - 3 2026-04-13
SWA581 Southwest Airlines 3 2026-07-07
SWA5 Southwest Airlines 3 2026-05-03
SWA485 - 3 2026-07-06
SWA4721 Southwest Airlines 3 2026-06-15
SWA4274 Southwest Airlines 3 2026-06-09
SWA4194 Southwest Airlines 3 2026-05-04
SWA4112 Southwest Airlines 3 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA193 MKE → BWI Jul 26, 21:00 UTCJul 26, 23:00 UTC2h 0m
2026-07-26 SWA1536 BWI → BOS Jul 26, 16:55 UTCJul 26, 19:35 UTC2h 40m
2026-07-26 SWA1536 BWI → BOS Jul 26, 12:35 UTCJul 26, 15:35 UTC3h 0m
2026-07-25 SWA1099 PSP → OAK Jul 25, 22:19 UTCJul 26, 01:31 UTC3h 12m
2026-07-25 SWA1099 PSP → OAK Jul 25, 18:40 UTCJul 26, 01:35 UTC6h 55m
2026-07-25 SWA2136 PVD → RSW Jul 25, 02:20 UTCJul 25, 05:30 UTC3h 10m
2026-07-25 SWA2136 PVD → RSW Jul 25, 02:19 UTCJul 25, 05:24 UTC3h 5m
2026-07-24 SWA3505 RNO → LAS Jul 24, 21:55 UTCJul 25, 01:25 UTC3h 30m
2026-07-24 SWA4891 LAS → SBA Jul 24, 16:45 UTCJul 24, 20:25 UTC3h 40m
2026-07-24 SWA4891 LAS → SBA Jul 24, 16:44 UTCJul 24, 20:25 UTC3h 42m
2026-07-24 SWA4531 AUS → ELP Jul 24, 13:25 UTCJul 24, 15:00 UTC1h 35m
2026-07-24 SWA168 BUR → SJC Jul 24, 11:45 UTCJul 24, 12:25 UTC40m
2026-07-24 SWA1260 SAN → SJC Jul 24, 05:45 UTCJul 24, 06:25 UTC40m
2026-07-24 SWA1260 SAN → SJC Jul 24, 02:30 UTCJul 24, 04:50 UTC2h 20m
2026-07-23 SWA4359 PHL → MDW Jul 23, 22:00 UTCJul 24, 01:10 UTC3h 10m
2026-07-23 SWA4359 PHL → MDW Jul 23, 21:59 UTCJul 24, 01:01 UTC3h 2m
2026-07-23 SWA2473 SJC → LAX Jul 23, 16:35 UTCJul 23, 18:42 UTC2h 7m
2026-07-23 SWA2473 SJC → LAX Jul 23, 16:35 UTCJul 23, 18:45 UTC2h 10m
2026-07-23 SWA2038 TPA → DEN Jul 23, 13:30 UTCJul 23, 15:00 UTC1h 30m
2026-07-23 SWA3059 OKC → DCA Jul 23, 07:20 UTCJul 23, 10:55 UTC3h 35m
2026-07-23 SWA2288 BWI → CHS Jul 23, 04:15 UTCJul 23, 05:20 UTC1h 5m
2026-07-23 SWA2003 OAK → ONT Jul 23, 00:35 UTCJul 23, 03:05 UTC2h 30m
2026-07-22 SWA3225 PHX → MDW Jul 22, 20:15 UTCJul 22, 23:15 UTC3h 0m
2026-07-22 SWA4393 BUF → RSW Jul 22, 16:15 UTCJul 22, 18:48 UTC2h 33m
2026-07-22 SWA4393 BUF → RSW Jul 22, 16:20 UTCJul 22, 18:55 UTC2h 35m
2026-07-22 SWA1360 FLL → TPA Jul 22, 13:30 UTCJul 22, 15:05 UTC1h 35m
2026-07-22 SWA2942 BDL → MDW Jul 22, 11:10 UTCJul 22, 12:25 UTC1h 15m
2026-07-22 SWA2942 BDL → MDW Jul 22, 10:15 UTCJul 22, 12:24 UTC2h 9m
2026-07-22 SWA1634 LGA → BWI Jul 22, 02:15 UTCJul 22, 04:05 UTC1h 50m
2026-07-21 SWA4450 SEA → SMF Jul 21, 21:45 UTCJul 22, 00:25 UTC2h 40m
2026-07-21 SWA1526 SJC → BUR Jul 21, 18:05 UTCJul 21, 18:40 UTC35m
2026-07-21 SWA1526 SJC → BUR Jul 21, 18:02 UTCJul 21, 18:44 UTC42m
2026-07-21 SWA4077 HOU → PHX Jul 21, 14:50 UTCJul 21, 17:05 UTC2h 15m
2026-07-21 SWA1760 DEN → AUS Jul 21, 11:55 UTCJul 21, 13:40 UTC1h 45m
2026-07-21 SWA3914 BWI → STL Jul 21, 04:05 UTCJul 21, 05:50 UTC1h 45m
2026-07-21 SWA4444 DAL → STL Jul 21, 01:50 UTCJul 21, 03:10 UTC1h 20m
2026-07-21 SWA4054 - Jul 21, 00:15 UTCJul 21, 00:55 UTC40m
2026-07-20 SWA4782 BWI → DAL Jul 20, 22:15 UTCJul 20, 23:20 UTC1h 5m
2026-07-20 SWA1476 SEA → OAK Jul 20, 19:20 UTCJul 20, 21:10 UTC1h 50m
2026-07-20 SWA275 - Jul 20, 14:05 UTCJul 20, 17:15 UTC3h 10m
2026-07-20 SWA396 PPM → BWI Jul 20, 10:45 UTCJul 20, 12:55 UTC2h 10m
2026-07-20 SWA3918 STL → FLL Jul 20, 03:25 UTCJul 20, 05:50 UTC2h 25m
2026-07-20 SWA3236 MCO → STL Jul 20, 00:32 UTCJul 20, 02:36 UTC2h 4m
2026-07-20 SWA3236 MCO → STL Jul 20, 00:35 UTCJul 20, 02:40 UTC2h 5m
2026-07-19 SWA1339 HOU → SJC Jul 19, 21:00 UTCJul 19, 22:55 UTC1h 55m
2026-07-19 SWA1339 HOU → SJC Jul 19, 18:45 UTCJul 19, 19:45 UTC1h 0m
2026-07-19 SWA8500 BWI → BOS Jul 19, 16:15 UTCJul 19, 17:45 UTC1h 30m
2026-07-19 SWA1937 DAL → ECP Jul 19, 05:15 UTCJul 19, 06:45 UTC1h 30m
2026-07-19 SWA1937 DAL → ECP Jul 19, 05:11 UTCJul 19, 06:44 UTC1h 33m
2026-07-19 SWA1523 DEN → DAL Jul 19, 02:41 UTCJul 19, 04:11 UTC1h 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 N8907L page for operator, model, and routing details .

Mode-S AC48AC frequently asked

What is Mode-S code AC48AC?
AC48AC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8907L.
Where is Mode-S AC48AC registered?
Mode-S code AC48AC 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 AC48AC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC48AC, octal 53044254, decimal 11,290,796.
What flights does AC48AC operate?
Mode-S AC48AC has broadcast 20 distinct callsigns, including SWA2462, SWA910, SWA921, SWA2686, SWA2369.