Apparatus

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sensors Mode-S transponder

AB5B66

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8305E · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
AB5B66
Octal
52655546
Decimal
11,230,054
Country
US
Tail
N8305E
Type
B738
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
695
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S AB5B66.

Country allocation

The ICAO 24-bit address AB5B66 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
SWA2413 Southwest Airlines 6 2026-04-17
SWA2754 Southwest Airlines 5 2026-04-16
SWA993 - 4 2026-07-07
SWA843 Southwest Airlines 4 2026-04-22
SWA758 Southwest Airlines 4 2026-05-11
SWA551 - 4 2026-06-22
SWA4417 - 4 2026-06-12
SWA3068 - 4 2026-04-13
SWA2758 - 4 2026-07-16
SWA268 - 4 2026-07-11
SWA2339 Southwest Airlines 4 2026-04-28
SWA1853 Southwest Airlines 4 2026-04-14
SWA1270 - 4 2026-07-17
SWA1119 - 4 2026-07-04
SWA930 - 3 2026-06-25
SWA9 - 3 2026-06-14
SWA822 Southwest Airlines 3 2026-04-15
SWA8068 Southwest Airlines 3 2026-06-05
SWA750 Southwest Airlines 3 2026-07-17
SWA728 - 3 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1341 STL → LGA Jul 26, 19:20 UTCJul 26, 21:30 UTC2h 10m
2026-07-26 SWA4423 TPA → PVD Jul 26, 17:05 UTCJul 26, 18:05 UTC1h 0m
2026-07-26 SWA4423 TPA → PVD Jul 26, 17:04 UTCJul 26, 18:06 UTC1h 2m
2026-07-26 SWA4655 LAS → SJC Jul 26, 13:50 UTCJul 26, 16:00 UTC2h 10m
2026-07-26 SWA2209 PHX → OAK Jul 26, 10:20 UTCJul 26, 12:35 UTC2h 15m
2026-07-26 SWA4257 BUR → OAK Jul 26, 01:45 UTCJul 26, 02:55 UTC1h 10m
2026-07-26 SWA4257 BUR → OAK Jul 26, 01:45 UTCJul 26, 02:52 UTC1h 7m
2026-07-25 SWA4682 AUS → MTJ Jul 25, 22:55 UTCJul 26, 00:25 UTC1h 30m
2026-07-25 SWA4682 AUS → MTJ Jul 25, 22:54 UTCJul 26, 00:22 UTC1h 29m
2026-07-25 SWA2815 BUR → OAK Jul 25, 20:00 UTCJul 25, 21:35 UTC1h 35m
2026-07-25 SWA2815 BUR → OAK Jul 25, 19:56 UTCJul 25, 21:38 UTC1h 42m
2026-07-25 SWA4039 DEN → SEA Jul 25, 16:25 UTCJul 25, 18:45 UTC2h 20m
2026-07-25 SWA3604 PDX → SJC Jul 25, 13:25 UTCJul 25, 15:25 UTC2h 0m
2026-07-25 SWA4187 DEN → PHL Jul 25, 10:20 UTCJul 25, 12:20 UTC2h 0m
2026-07-25 SWA4187 DEN → PHL Jul 25, 10:18 UTCJul 25, 12:18 UTC2h 0m
2026-07-25 SWA2090 BNA → DAL Jul 25, 02:30 UTCJul 25, 04:25 UTC1h 55m
2026-07-24 SWA308 CUN → HOU Jul 24, 22:30 UTCJul 25, 00:25 UTC1h 55m
2026-07-24 SWA307 HOU → CUN Jul 24, 19:30 UTCJul 24, 21:10 UTC1h 40m
2026-07-24 SWA981 SJC → LAX Jul 24, 15:20 UTCJul 24, 18:00 UTC2h 40m
2026-07-24 SWA981 SJC → LAX Jul 24, 15:18 UTCJul 24, 17:57 UTC2h 39m
2026-07-24 SWA4205 MDW → TPA Jul 24, 12:39 UTCJul 24, 13:34 UTC55m
2026-07-24 SWA4205 MDW → TPA Jul 24, 12:40 UTCJul 24, 13:35 UTC55m
2026-07-24 SWA849 MCO → ALB Jul 24, 07:25 UTCJul 24, 08:35 UTC1h 10m
2026-07-24 SWA3753 STL → JAX Jul 24, 05:25 UTCJul 24, 06:35 UTC1h 10m
2026-07-24 SWA1180 AUS → PHX Jul 24, 02:15 UTCJul 24, 04:40 UTC2h 25m
2026-07-23 SWA587 CUN → AUS Jul 23, 22:00 UTCJul 24, 00:20 UTC2h 20m
2026-07-23 SWA131 DEN → CUN Jul 23, 16:45 UTCJul 23, 20:14 UTC3h 29m
2026-07-23 SWA131 DEN → CUN Jul 23, 16:45 UTCJul 23, 19:10 UTC2h 25m
2026-07-23 SWA4019 LAS → OAK Jul 23, 11:55 UTCJul 23, 15:05 UTC3h 10m
2026-07-23 SWA4619 PHX → CVG Jul 23, 00:40 UTCJul 23, 02:30 UTC1h 50m
2026-07-22 SWA2208 DEN → OKC Jul 22, 22:50 UTCJul 22, 23:35 UTC45m
2026-07-22 SWA2208 DEN → OKC Jul 22, 19:40 UTCJul 22, 21:55 UTC2h 15m
2026-07-22 SWA4833 OAK → SNA Jul 22, 14:50 UTCJul 22, 18:05 UTC3h 15m
2026-07-22 SWA2605 PDX → SJC Jul 22, 03:15 UTCJul 22, 04:55 UTC1h 40m
2026-07-21 SWA4050 - Jul 21, 23:55 UTCJul 22, 02:20 UTC2h 25m
2026-07-21 SWA346 - Jul 21, 20:35 UTCJul 21, 22:55 UTC2h 20m
2026-07-21 SWA4744 PHX → OAK Jul 21, 17:05 UTCJul 21, 19:00 UTC1h 55m
2026-07-21 SWA1675 SJC → LAS Jul 21, 14:39 UTCJul 21, 16:09 UTC1h 30m
2026-07-21 SWA1675 SJC → LAS Jul 21, 14:40 UTCJul 21, 16:10 UTC1h 30m
2026-07-21 SWA1975 MDW → MCO Jul 21, 04:20 UTCJul 21, 06:15 UTC1h 55m
2026-07-20 SWA3225 PHX → MDW Jul 20, 22:25 UTCJul 21, 01:25 UTC3h 0m
2026-07-20 SWA3225 PHX → MDW Jul 20, 22:21 UTCJul 21, 01:23 UTC3h 2m
2026-07-20 SWA4235 BNA → LGA Jul 20, 20:05 UTCJul 20, 21:05 UTC1h 0m
2026-07-20 SWA2427 SYR → BWI Jul 20, 17:40 UTCJul 20, 18:35 UTC55m
2026-07-20 SWA2427 SYR → BWI Jul 20, 17:37 UTCJul 20, 18:31 UTC54m
2026-07-20 SWA2427 SYR → BWI Jul 20, 15:40 UTCJul 20, 16:35 UTC55m
2026-07-20 SWA4137 BWI → CLE Jul 20, 10:30 UTCJul 20, 13:35 UTC3h 5m
2026-07-20 SWA1989 DEN → ORD Jul 20, 03:30 UTCJul 20, 05:20 UTC1h 50m
2026-07-20 SWA1989 DEN → ORD Jul 20, 03:26 UTCJul 20, 05:16 UTC1h 50m
2026-07-19 SWA2988 HRL → HOU Jul 19, 23:15 UTCJul 20, 02:00 UTC2h 45m

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 N8305E page for operator, model, and routing details .

Mode-S AB5B66 frequently asked

What is Mode-S code AB5B66?
AB5B66 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8305E.
Where is Mode-S AB5B66 registered?
Mode-S code AB5B66 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 AB5B66 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB5B66, octal 52655546, decimal 11,230,054.
What flights does AB5B66 operate?
Mode-S AB5B66 has broadcast 20 distinct callsigns, including SWA2413, SWA2754, SWA993, SWA843, SWA758.