Apparatus

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sensors Mode-S transponder

AC0818

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8744B · BOEING 737 MAX 8 · operated by UMB BANK NA TRUSTEE

Hex
AC0818
Octal
53004030
Decimal
11,274,264
Country
US
Tail
N8744B
Type
B38M
Broadcasting now · callsign SWA4559 · 8,025 ft
Flights observed
624
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Current position

AC0818 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC0818 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
SWA1890 Southwest Airlines 8 2026-06-04
SWA386 - 5 2026-06-30
SWA2257 Southwest Airlines 5 2026-04-18
SWA346 Southwest Airlines 4 2026-06-11
SWA3254 - 4 2026-07-07
SWA3150 - 4 2026-06-29
SWA307 - 4 2026-06-29
SWA1881 Southwest Airlines 4 2026-05-26
SWA1713 - 4 2026-07-09
SWA1705 Southwest Airlines 4 2026-06-04
SWA1581 Southwest Airlines 4 2026-05-20
SWA1492 Southwest Airlines 4 2026-06-13
SWA1457 Southwest Airlines 4 2026-06-26
SWA981 - 3 2026-06-29
SWA924 Southwest Airlines 3 2026-06-10
SWA884 Southwest Airlines 3 2026-06-07
SWA808 Southwest Airlines 3 2026-05-30
SWA777 Southwest Airlines 3 2026-05-12
SWA567 Southwest Airlines 3 2026-07-05
SWA4009 Southwest Airlines 3 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA112 HOU → SJO Jul 26, 21:30 UTCJul 26, 22:00 UTC30m
2026-07-25 SWA817 LIR → HOU Jul 25, 21:40 UTCJul 25, 23:55 UTC2h 15m
2026-07-25 SWA355 - Jul 25, 14:50 UTCJul 25, 18:35 UTC3h 45m
2026-07-25 SWA355 DEN → LIR Jul 25, 14:45 UTCJul 25, 19:23 UTC4h 38m
2026-07-25 SWA3909 MKE → PHX Jul 25, 11:05 UTCJul 25, 12:55 UTC1h 50m
2026-07-25 SWA3909 MKE → PHX Jul 25, 11:04 UTCJul 25, 12:55 UTC1h 51m
2026-07-25 SWA142 BUR → OAK Jul 25, 02:50 UTCJul 25, 04:50 UTC2h 0m
2026-07-25 SWA142 BUR → OAK Jul 25, 02:47 UTCJul 25, 04:51 UTC2h 4m
2026-07-24 SWA4505 DCA → PVD Jul 24, 19:45 UTCJul 25, 00:05 UTC4h 20m
2026-07-24 SWA2234 SJC → AUS Jul 24, 17:20 UTCJul 24, 18:05 UTC45m
2026-07-24 SWA543 SAN → SJC Jul 24, 14:30 UTCJul 24, 16:00 UTC1h 30m
2026-07-24 SWA1408 DAL → SLC Jul 24, 11:10 UTCJul 24, 13:25 UTC2h 15m
2026-07-24 SWA1408 DAL → SLC Jul 24, 11:07 UTCJul 24, 13:20 UTC2h 13m
2026-07-24 SWA193 MKE → BWI Jul 24, 02:35 UTCJul 24, 04:40 UTC2h 5m
2026-07-24 SWA193 MKE → BWI Jul 24, 00:40 UTCJul 24, 01:40 UTC1h 0m
2026-07-23 SWA193 MKE → BWI Jul 23, 18:30 UTCJul 23, 23:15 UTC4h 45m
2026-07-23 SWA1121 SJC → BUR Jul 23, 15:40 UTCJul 23, 16:55 UTC1h 15m
2026-07-23 SWA830 MDW → MHT Jul 23, 12:55 UTCJul 23, 14:35 UTC1h 40m
2026-07-23 SWA1243 DAL → DEN Jul 23, 09:15 UTCJul 23, 11:50 UTC2h 35m
2026-07-23 SWA4831 MEM → DEN Jul 23, 02:00 UTCJul 23, 03:55 UTC1h 55m
2026-07-23 SWA4831 MEM → DEN Jul 23, 01:57 UTCJul 23, 03:51 UTC1h 54m
2026-07-23 SWA4341 STL → DCA Jul 23, 00:25 UTCJul 23, 00:55 UTC30m
2026-07-23 SWA4341 STL → DCA Jul 23, 00:20 UTCJul 23, 00:55 UTC35m
2026-07-22 SWA480 SAN → OAK Jul 22, 21:10 UTCJul 22, 23:30 UTC2h 20m
2026-07-22 SWA4562 - Jul 22, 18:10 UTCJul 22, 19:30 UTC1h 20m
2026-07-22 SWA3215 ABQ → OAK Jul 22, 14:25 UTCJul 22, 16:00 UTC1h 35m
2026-07-22 SWA4168 OAK → LAX Jul 22, 00:30 UTCJul 22, 03:25 UTC2h 55m
2026-07-21 SWA4332 - Jul 21, 16:20 UTCJul 21, 17:25 UTC1h 5m
2026-07-21 SWA1309 - Jul 21, 13:30 UTCJul 21, 14:35 UTC1h 5m
2026-07-21 SWA262 - Jul 21, 11:10 UTCJul 21, 12:35 UTC1h 25m
2026-07-21 SWA262 ABQ → DAL Jul 21, 11:09 UTCJul 21, 12:33 UTC1h 24m
2026-07-21 SWA1916 MDW → MSY Jul 21, 05:15 UTCJul 21, 06:50 UTC1h 35m
2026-07-21 SWA1916 MDW → MSY Jul 21, 05:11 UTCJul 21, 06:45 UTC1h 34m
2026-07-20 SWA1916 MDW → MSY Jul 20, 23:15 UTCJul 21, 04:15 UTC4h 59m
2026-07-20 SWA1865 - Jul 20, 21:15 UTCJul 20, 21:30 UTC15m
2026-07-20 SWA1865 - Jul 20, 15:55 UTCJul 20, 17:10 UTC1h 15m
2026-07-20 SWA512 - Jul 20, 08:25 UTCJul 20, 08:40 UTC15m
2026-07-20 SWA512 HNL → SAN Jul 20, 08:20 UTCJul 20, 13:20 UTC5h 0m
2026-07-19 SWA2879 MDW → ALB Jul 19, 18:34 UTCJul 19, 23:30 UTC4h 56m
2026-07-19 SWA2879 MDW → ALB Jul 19, 18:35 UTCJul 19, 23:35 UTC5h 0m
2026-07-19 SWA4119 SAN → OAK Jul 19, 15:50 UTCJul 19, 16:50 UTC1h 0m
2026-07-19 SWA4119 PHX → SAN Jul 19, 13:45 UTCJul 19, 14:30 UTC45m
2026-07-19 SWA3112 RHV → PHX Jul 19, 03:25 UTCJul 19, 04:50 UTC1h 25m
2026-07-19 SWA3112 SJC → PHX Jul 19, 03:21 UTCJul 19, 04:48 UTC1h 27m
2026-07-18 SWA4994 MSY → TPA Jul 18, 21:15 UTCJul 19, 01:55 UTC4h 40m
2026-07-18 SWA2122 - Jul 18, 14:20 UTCJul 18, 19:25 UTC5h 5m
2026-07-18 SWA3542 SAN → SJC Jul 18, 04:55 UTCJul 18, 05:50 UTC55m
2026-07-18 SWA3542 SAN → SJC Jul 18, 04:55 UTCJul 18, 05:49 UTC54m
2026-07-18 SWA4293 SMF → SAN Jul 18, 02:40 UTCJul 18, 03:50 UTC1h 11m
2026-07-17 SWA2316 - Jul 17, 23:55 UTCJul 18, 00:45 UTC50m

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 N8744B page for operator, model, and routing details .

Mode-S AC0818 frequently asked

What is Mode-S code AC0818?
AC0818 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8744B.
Where is Mode-S AC0818 registered?
Mode-S code AC0818 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 AC0818 broadcasting right now?
Yes. Mode-S AC0818 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC0818, octal 53004030, decimal 11,274,264.
What flights does AC0818 operate?
Mode-S AC0818 has broadcast 20 distinct callsigns, including SWA1890, SWA386, SWA2257, SWA346, SWA3254.