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sensors Mode-S transponder

AC0519

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8739L · BOEING 737 MAX 8 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
AC0519
Octal
53002431
Decimal
11,273,497
Country
US
Tail
N8739L
Type
B38M
Broadcasting now · callsign SWA2862 · 36,000 ft
Flights observed
549
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AC0519 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC0519 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
SWA1178 Southwest Airlines 7 2026-05-19
SWA2485 Southwest Airlines 6 2026-04-17
SWA1987 Southwest Airlines 6 2026-05-12
SWA4335 Southwest Airlines 5 2026-05-11
SWA3254 Southwest Airlines 5 2026-05-09
SWA2566 Southwest Airlines 5 2026-04-22
SWA2527 Southwest Airlines 5 2026-05-24
SWA1728 - 5 2026-06-22
SWA1913 - 4 2026-07-10
SWA1613 Southwest Airlines 4 2026-06-14
SWA137 Southwest Airlines 4 2026-06-13
SWA948 Southwest Airlines 3 2026-05-19
SWA899 Southwest Airlines 3 2026-06-05
SWA602 - 3 2026-07-05
SWA532 Southwest Airlines 3 2026-05-23
SWA4634 Southwest Airlines 3 2026-06-12
SWA4247 - 3 2026-06-23
SWA4104 Southwest Airlines 3 2026-06-12
SWA3723 Southwest Airlines 3 2026-06-25
SWA3566 Southwest Airlines 3 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA2862 - Jul 14, 01:25 UTCJul 14, 02:15 UTC50m
2026-07-13 SWA1755 - Jul 13, 22:20 UTCJul 13, 23:10 UTC50m
2026-07-13 SWA1755 LAS → DSM Jul 13, 18:50 UTCJul 13, 21:20 UTC2h 30m
2026-07-13 SWA2794 - Jul 13, 14:30 UTCJul 13, 17:30 UTC3h 0m
2026-07-13 SWA1442 DCA → MDW Jul 13, 11:55 UTCJul 13, 13:15 UTC1h 20m
2026-07-13 SWA8511 BWI → DCA Jul 13, 10:05 UTCJul 13, 10:15 UTC10m
2026-07-13 SWA8800 - Jul 13, 06:01 UTCJul 13, 08:40 UTC2h 40m
2026-07-12 SWA817 - Jul 12, 17:50 UTCJul 12, 23:35 UTC5h 45m
2026-07-12 SWA691 - Jul 12, 16:30 UTCJul 12, 16:40 UTC10m
2026-07-12 SWA704 - Jul 12, 12:35 UTCJul 12, 14:35 UTC2h 0m
2026-07-12 SWA704 MCO → HOU Jul 12, 12:34 UTCJul 12, 14:39 UTC2h 5m
2026-07-12 SWA2409 - Jul 12, 06:05 UTCJul 12, 10:35 UTC4h 30m
2026-07-12 SWA3932 - Jul 12, 02:05 UTCJul 12, 04:35 UTC2h 30m
2026-07-11 SWA336 HWO → AUS Jul 11, 22:30 UTCJul 12, 00:50 UTC2h 20m
2026-07-11 SWA336 MIA → AUS Jul 11, 22:26 UTCJul 12, 00:51 UTC2h 25m
2026-07-11 SWA212 - Jul 11, 17:10 UTCJul 11, 19:50 UTC2h 40m
2026-07-11 SWA4941 - Jul 11, 14:30 UTCJul 11, 15:55 UTC1h 25m
2026-07-11 SWA1773 DEN → AUS Jul 11, 11:45 UTCJul 11, 13:20 UTC1h 35m
2026-07-11 SWA2649 - Jul 11, 03:01 UTCJul 11, 04:50 UTC1h 50m
2026-07-11 SWA2649 SNA → DEN Jul 11, 02:57 UTCJul 11, 04:46 UTC1h 49m
2026-07-11 SWA2366 - Jul 11, 01:30 UTCJul 11, 02:10 UTC40m
2026-07-10 SWA1913 - Jul 10, 22:15 UTCJul 10, 23:30 UTC1h 15m
2026-07-10 SWA1913 - Jul 10, 18:20 UTCJul 10, 18:35 UTC15m
2026-07-10 SWA3091 - Jul 10, 16:15 UTCJul 10, 16:30 UTC15m
2026-07-10 SWA508 - Jul 10, 06:50 UTCJul 10, 07:10 UTC20m
2026-07-10 SWA3098 - Jul 10, 05:15 UTCJul 10, 05:35 UTC20m
2026-07-10 SWA1933 - Jul 10, 03:30 UTCJul 10, 03:50 UTC20m
2026-07-10 SWA2169 KOA → HNL Jul 10, 01:44 UTCJul 10, 02:15 UTC31m
2026-07-10 SWA2169 KOA → HNL Jul 10, 01:45 UTCJul 10, 02:15 UTC30m
2026-07-09 SWA561 - Jul 9, 23:35 UTCJul 10, 00:05 UTC30m
2026-07-09 SWA561 HNL → KOA Jul 9, 23:32 UTCJul 10, 00:01 UTC29m
2026-07-09 SWA2168 - Jul 9, 21:40 UTCJul 9, 22:15 UTC35m
2026-07-09 SWA2168 KOA → HNL Jul 9, 21:40 UTCJul 9, 22:13 UTC33m
2026-07-09 SWA675 - Jul 9, 20:05 UTCJul 9, 20:35 UTC30m
2026-07-09 SWA2149 - Jul 9, 18:20 UTCJul 9, 18:45 UTC25m
2026-07-09 SWA1902 - Jul 9, 16:10 UTCJul 9, 16:35 UTC25m
2026-07-09 SWA1902 HNL → ITO Jul 9, 16:09 UTCJul 9, 16:46 UTC37m
2026-07-08 SWA4109 - Jul 8, 22:00 UTCJul 8, 22:20 UTC20m
2026-07-08 SWA4109 - Jul 8, 16:20 UTCJul 8, 17:30 UTC1h 10m
2026-07-08 SWA2463 - Jul 8, 12:10 UTCJul 8, 14:35 UTC2h 25m
2026-07-08 SWA1409 - Jul 8, 00:50 UTCJul 8, 03:15 UTC2h 25m
2026-07-07 SWA1913 - Jul 7, 18:15 UTCJul 7, 18:30 UTC15m
2026-07-07 SWA1913 HNL → LAS Jul 7, 18:09 UTCJul 7, 23:17 UTC5h 8m
2026-07-07 SWA3091 - Jul 7, 16:10 UTCJul 7, 16:30 UTC20m
2026-07-07 SWA3091 OGG → HNL Jul 7, 16:05 UTCJul 7, 16:28 UTC23m
2026-07-06 SWA2618 SEA → OAK Jul 6, 17:45 UTCJul 6, 18:30 UTC45m
2026-07-06 SWA2618 SEA → OAK Jul 6, 17:41 UTCJul 6, 22:49 UTC5h 8m
2026-07-06 SWA2771 - Jul 6, 15:15 UTCJul 6, 16:05 UTC50m
2026-07-06 SWA635 BNA → PHX Jul 6, 10:45 UTCJul 6, 13:50 UTC3h 5m
2026-07-06 SWA635 BNA → PHX Jul 6, 10:45 UTCJul 6, 13:49 UTC3h 4m

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 N8739L page for operator, model, and routing details .

Mode-S AC0519 frequently asked

What is Mode-S code AC0519?
AC0519 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8739L.
Where is Mode-S AC0519 registered?
Mode-S code AC0519 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 AC0519 broadcasting right now?
Yes. Mode-S AC0519 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC0519, octal 53002431, decimal 11,273,497.
What flights does AC0519 operate?
Mode-S AC0519 has broadcast 20 distinct callsigns, including SWA1178, SWA2485, SWA1987, SWA4335, SWA3254.