Apparatus

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sensors Mode-S transponder

AC3E13

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8881L · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC3E13
Octal
53037023
Decimal
11,288,083
Country
US
Tail
N8881L
Type
B38M
No current signal · last broadcast Jul 26, 21:20 UTC
Flights observed
689
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:20 UTC

Last known position

Most recent position reported by Mode-S AC3E13.

Country allocation

The ICAO 24-bit address AC3E13 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
SWA3524 Southwest Airlines 4 2026-06-08
SWA2893 - 4 2026-06-19
SWA2042 Southwest Airlines 4 2026-07-24
SWA1970 Southwest Airlines 4 2026-06-16
SWA1902 Southwest Airlines 4 2026-05-16
SWA1232 - 4 2026-04-13
SWA543 Southwest Airlines 3 2026-05-13
SWA4668 Southwest Airlines 3 2026-06-09
SWA446 - 3 2026-06-22
SWA426 Southwest Airlines 3 2026-05-30
SWA3714 Southwest Airlines 3 2026-04-17
SWA3511 Southwest Airlines 3 2026-04-25
SWA3312 Southwest Airlines 3 2026-04-27
SWA3049 Southwest Airlines 3 2026-07-06
SWA3027 - 3 2026-07-10
SWA2919 - 3 2026-07-20
SWA287 - 3 2026-06-14
SWA2573 - 3 2026-04-13
SWA2506 Southwest Airlines 3 2026-05-03
SWA2495 Southwest Airlines 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA273 MBJ → MCO Jul 26, 20:10 UTCJul 26, 21:15 UTC1h 5m
2026-07-26 SWA918 BWI → MBJ Jul 26, 15:00 UTCJul 26, 17:10 UTC2h 10m
2026-07-26 SWA918 BWI → MBJ Jul 26, 14:57 UTCJul 26, 17:58 UTC3h 1m
2026-07-26 SWA3463 DAL → CMH Jul 26, 10:40 UTCJul 26, 12:40 UTC2h 0m
2026-07-26 SWA4232 TPA → AUS Jul 26, 00:35 UTCJul 26, 02:45 UTC2h 10m
2026-07-25 SWA2045 BNA → ISP Jul 25, 21:40 UTCJul 25, 23:40 UTC2h 0m
2026-07-25 SWA2045 BNA → ISP Jul 25, 21:37 UTCJul 25, 23:30 UTC1h 54m
2026-07-25 SWA3067 AMA → AUS Jul 25, 18:40 UTCJul 25, 20:30 UTC1h 50m
2026-07-25 SWA3067 AMA → AUS Jul 25, 18:36 UTCJul 25, 20:29 UTC1h 53m
2026-07-25 SWA4671 LAS → OAK Jul 25, 16:45 UTCJul 25, 17:25 UTC40m
2026-07-25 SWA4671 LAS → OAK Jul 25, 16:40 UTCJul 25, 17:16 UTC36m
2026-07-25 SWA2592 ALB → BWI Jul 25, 13:35 UTCJul 25, 15:30 UTC1h 55m
2026-07-25 SWA4796 CMH → MCO Jul 25, 10:15 UTCJul 25, 12:25 UTC2h 10m
2026-07-25 SWA2267 PSP → OAK Jul 25, 04:20 UTCJul 25, 06:45 UTC2h 25m
2026-07-25 SWA2267 PSP → OAK Jul 25, 00:55 UTCJul 25, 03:00 UTC2h 5m
2026-07-24 SWA4769 ALB → FLL Jul 24, 21:20 UTCJul 24, 22:45 UTC1h 25m
2026-07-24 SWA4769 ALB → FLL Jul 24, 21:15 UTCJul 24, 23:18 UTC2h 3m
2026-07-24 SWA3323 PHX → SAN Jul 24, 19:15 UTCJul 24, 20:05 UTC50m
2026-07-24 SWA3587 DCA → ATL Jul 24, 16:10 UTCJul 24, 18:05 UTC1h 55m
2026-07-24 SWA3587 DCA → ATL Jul 24, 16:08 UTCJul 24, 17:58 UTC1h 51m
2026-07-24 SWA663 MDW → OMA Jul 24, 13:10 UTCJul 24, 15:00 UTC1h 50m
2026-07-24 SWA1141 SNA → OAK Jul 24, 10:35 UTCJul 24, 11:40 UTC1h 5m
2026-07-24 SWA2042 LAS → OAK Jul 24, 02:00 UTCJul 24, 03:30 UTC1h 30m
2026-07-23 SWA2042 LAS → OAK Jul 23, 23:05 UTCJul 24, 01:05 UTC2h 0m
2026-07-23 SWA533 BUR → SJC Jul 23, 20:00 UTCJul 23, 21:50 UTC1h 50m
2026-07-23 SWA2605 PDX → SJC Jul 23, 16:55 UTCJul 23, 18:25 UTC1h 30m
2026-07-23 SWA2605 PDX → SJC Jul 23, 16:51 UTCJul 23, 18:20 UTC1h 29m
2026-07-23 SWA2130 - Jul 23, 13:55 UTCJul 23, 15:45 UTC1h 50m
2026-07-23 SWA2130 IND → MCO Jul 23, 13:52 UTCJul 23, 15:36 UTC1h 45m
2026-07-23 SWA331 MCI → AUS Jul 23, 10:40 UTCJul 23, 12:35 UTC1h 55m
2026-07-23 SWA611 DAL → RSW Jul 23, 01:25 UTCJul 23, 03:35 UTC2h 10m
2026-07-22 SWA2539 DEN → SJC Jul 22, 23:05 UTCJul 23, 00:30 UTC1h 25m
2026-07-22 SWA3689 - Jul 22, 19:15 UTCJul 22, 21:50 UTC2h 35m
2026-07-22 SWA3626 BWI → MKE Jul 22, 16:50 UTCJul 22, 17:55 UTC1h 5m
2026-07-22 SWA2543 - Jul 22, 14:45 UTCJul 22, 15:45 UTC1h 0m
2026-07-22 SWA3150 - Jul 22, 12:45 UTCJul 22, 13:25 UTC40m
2026-07-22 SWA1663 MDW → DEN Jul 22, 03:35 UTCJul 22, 05:19 UTC1h 44m
2026-07-22 SWA1663 MDW → DEN Jul 22, 03:40 UTCJul 22, 05:25 UTC1h 45m
2026-07-22 SWA3913 MSY → LGA Jul 22, 00:01 UTCJul 22, 01:46 UTC1h 46m
2026-07-22 SWA3913 MSY → LGA Jul 22, 00:05 UTCJul 22, 01:55 UTC1h 50m
2026-07-21 SWA4642 - Jul 21, 21:30 UTCJul 21, 23:00 UTC1h 30m
2026-07-21 SWA4642 HOU → STL Jul 21, 21:26 UTCJul 21, 23:06 UTC1h 40m
2026-07-21 SWA31 - Jul 21, 19:30 UTCJul 21, 20:15 UTC45m
2026-07-21 SWA31 DAL → HOU Jul 21, 19:29 UTCJul 21, 20:19 UTC50m
2026-07-21 SWA3955 MCO → DAL Jul 21, 15:50 UTCJul 21, 17:55 UTC2h 5m
2026-07-21 SWA3375 LAS → SFO Jul 21, 12:40 UTCJul 21, 14:25 UTC1h 45m
2026-07-21 SWA2685 BWI → SRQ Jul 21, 02:00 UTCJul 21, 03:55 UTC1h 55m
2026-07-20 SWA2919 - Jul 20, 22:05 UTCJul 21, 00:40 UTC2h 35m
2026-07-20 SWA2919 MHT → MCO Jul 20, 22:00 UTCJul 21, 00:29 UTC2h 30m
2026-07-20 SWA4761 - Jul 20, 18:30 UTCJul 20, 20:40 UTC2h 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 N8881L page for operator, model, and routing details .

Mode-S AC3E13 frequently asked

What is Mode-S code AC3E13?
AC3E13 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8881L.
Where is Mode-S AC3E13 registered?
Mode-S code AC3E13 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 AC3E13 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC3E13, octal 53037023, decimal 11,288,083.
What flights does AC3E13 operate?
Mode-S AC3E13 has broadcast 20 distinct callsigns, including SWA3524, SWA2893, SWA2042, SWA1970, SWA1902.