Apparatus

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sensors Mode-S transponder

AC28BE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8828L · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC28BE
Octal
53024276
Decimal
11,282,622
Country
US
Tail
N8828L
Type
B38M
No current signal · last broadcast Jul 26, 05:40 UTC
Flights observed
762
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 05:40 UTC

Last known position

Most recent position reported by Mode-S AC28BE.

Country allocation

The ICAO 24-bit address AC28BE 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
SWA1733 Southwest Airlines 8 2026-04-30
SWA974 - 6 2026-07-20
SWA4533 - 6 2026-07-20
SWA426 - 6 2026-07-20
SWA4177 - 6 2026-06-25
SWA4025 Southwest Airlines 6 2026-06-15
SWA739 - 5 2026-06-17
SWA3741 - 5 2026-07-04
SWA436 Southwest Airlines 4 2026-06-07
SWA4179 Southwest Airlines 4 2026-07-25
SWA3795 Southwest Airlines 4 2026-05-22
SWA3524 - 4 2026-07-12
SWA3112 Southwest Airlines 4 2026-06-11
SWA2954 Southwest Airlines 4 2026-06-04
SWA2335 Southwest Airlines 4 2026-07-22
SWA2234 - 4 2026-06-21
SWA1905 Southwest Airlines 4 2026-05-23
SWA169 Southwest Airlines 4 2026-05-23
SWA1650 Southwest Airlines 4 2026-06-08
SWA1263 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3681 ATL → CMH Jul 26, 04:45 UTCJul 26, 05:40 UTC55m
2026-07-26 SWA3823 BWI → DEN Jul 26, 02:50 UTCJul 26, 03:45 UTC55m
2026-07-26 SWA3652 MCO → MHT Jul 26, 00:50 UTCJul 26, 01:55 UTC1h 5m
2026-07-25 SWA914 LAS → SJC Jul 25, 22:45 UTCJul 25, 23:45 UTC1h 0m
2026-07-25 SWA3698 LAS → SAT Jul 25, 19:05 UTCJul 25, 20:10 UTC1h 5m
2026-07-25 SWA3698 LAS → SAT Jul 25, 19:10 UTCJul 25, 20:15 UTC1h 5m
2026-07-25 SWA3162 RSW → MDW Jul 25, 17:20 UTCJul 25, 18:10 UTC50m
2026-07-25 SWA3162 RSW → MDW Jul 25, 17:16 UTCJul 25, 18:04 UTC48m
2026-07-25 SWA4179 LAS → BNA Jul 25, 15:45 UTCJul 25, 16:20 UTC35m
2026-07-25 SWA4179 LAS → BNA Jul 25, 15:40 UTCJul 25, 16:14 UTC34m
2026-07-25 SWA4231 ELP → HOU Jul 25, 12:20 UTCJul 25, 13:25 UTC1h 5m
2026-07-25 SWA2784 BWI → BOS Jul 25, 07:25 UTCJul 25, 08:25 UTC1h 0m
2026-07-25 SWA3788 DEN → DAL Jul 25, 05:30 UTCJul 25, 06:30 UTC1h 0m
2026-07-25 SWA4032 FLL → DEN Jul 25, 03:35 UTCJul 25, 04:40 UTC1h 5m
2026-07-25 SWA4032 FLL → DEN Jul 25, 03:32 UTCJul 25, 04:33 UTC1h 1m
2026-07-25 SWA4111 IND → MCI Jul 25, 01:22 UTCJul 25, 02:10 UTC49m
2026-07-25 SWA4111 IND → MCI Jul 25, 01:25 UTCJul 25, 02:15 UTC50m
2026-07-24 SWA4111 IND → MCI Jul 24, 20:10 UTCJul 24, 23:50 UTC3h 40m
2026-07-24 SWA3032 LAS → OAK Jul 24, 17:10 UTCJul 24, 18:15 UTC1h 5m
2026-07-24 SWA3032 LAS → OAK Jul 24, 17:06 UTCJul 24, 18:11 UTC1h 5m
2026-07-24 SWA3032 LAS → OAK Jul 24, 14:35 UTCJul 24, 16:05 UTC1h 30m
2026-07-24 SWA3393 MCI → DCA Jul 24, 12:05 UTCJul 24, 13:30 UTC1h 25m
2026-07-24 SWA2714 BNA → MCO Jul 24, 00:55 UTCJul 24, 01:50 UTC55m
2026-07-23 SWA2199 PWM → BWI Jul 23, 22:45 UTCJul 23, 23:40 UTC55m
2026-07-23 SWA2199 PWM → BWI Jul 23, 22:41 UTCJul 23, 23:35 UTC54m
2026-07-23 SWA4357 SRQ → CMH Jul 23, 17:50 UTCJul 23, 21:30 UTC3h 40m
2026-07-23 SWA494 AUS → MDW Jul 23, 14:25 UTCJul 23, 16:30 UTC2h 5m
2026-07-23 SWA2522 MCO → MHT Jul 23, 11:20 UTCJul 23, 12:40 UTC1h 20m
2026-07-23 SWA4800 DAL → BWI Jul 23, 02:55 UTCJul 23, 03:55 UTC1h 0m
2026-07-22 SWA4583 MCO → IND Jul 22, 23:55 UTCJul 23, 02:05 UTC2h 10m
2026-07-22 SWA4899 MCO → BNA Jul 22, 20:25 UTCJul 22, 22:45 UTC2h 20m
2026-07-22 SWA4899 MCO → BNA Jul 22, 20:20 UTCJul 22, 22:42 UTC2h 22m
2026-07-22 SWA507 - Jul 22, 18:15 UTCJul 22, 19:00 UTC45m
2026-07-22 SWA507 - Jul 22, 15:45 UTCJul 22, 16:50 UTC1h 5m
2026-07-22 SWA3557 - Jul 22, 12:10 UTCJul 22, 14:15 UTC2h 5m
2026-07-22 SWA3557 SAT → BNA Jul 22, 12:08 UTCJul 22, 13:57 UTC1h 49m
2026-07-22 SWA2335 HOU → LGA Jul 22, 04:00 UTCJul 22, 05:25 UTC1h 25m
2026-07-22 SWA2335 HOU → LGA Jul 22, 03:55 UTCJul 22, 06:24 UTC2h 29m
2026-07-22 SWA2335 HOU → LGA Jul 22, 01:25 UTCJul 22, 02:40 UTC1h 15m
2026-07-21 SWA2335 HOU → LGA Jul 21, 21:20 UTCJul 22, 00:25 UTC3h 5m
2026-07-21 SWA2525 - Jul 21, 17:15 UTCJul 21, 19:45 UTC2h 30m
2026-07-21 SWA759 LAX → OAK Jul 21, 15:25 UTCJul 21, 16:15 UTC50m
2026-07-21 SWA2062 SJC → MDW Jul 21, 11:35 UTCJul 21, 13:45 UTC2h 10m
2026-07-21 SWA4315 STL → PNS Jul 21, 02:55 UTCJul 21, 05:30 UTC2h 35m
2026-07-21 SWA4315 STL → PNS Jul 21, 02:50 UTCJul 21, 05:34 UTC2h 44m
2026-07-21 SWA4514 BUR → SJC Jul 21, 00:45 UTCJul 21, 01:45 UTC1h 0m
2026-07-21 SWA4514 BUR → SJC Jul 21, 00:41 UTCJul 21, 01:36 UTC55m
2026-07-20 SWA3832 - Jul 20, 21:55 UTCJul 20, 23:00 UTC1h 5m
2026-07-20 SWA4533 LAS → SMF Jul 20, 19:50 UTCJul 20, 20:55 UTC1h 5m
2026-07-20 SWA4533 LAS → SMF Jul 20, 19:48 UTCJul 20, 20:50 UTC1h 2m

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 N8828L page for operator, model, and routing details .

Mode-S AC28BE frequently asked

What is Mode-S code AC28BE?
AC28BE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8828L.
Where is Mode-S AC28BE registered?
Mode-S code AC28BE 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 AC28BE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 05:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC28BE, octal 53024276, decimal 11,282,622.
What flights does AC28BE operate?
Mode-S AC28BE has broadcast 20 distinct callsigns, including SWA1733, SWA974, SWA4533, SWA426, SWA4177.