Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A1442F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1808U · operated by SOUTHWEST AIRLINES INC

Hex
A1442F
Octal
50242057
Decimal
10,568,751
Country
US
Tail
N1808U
Type
B38M
No current signal · last broadcast Jul 26, 01:15 UTC
Flights observed
640
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 01:15 UTC

Last known position

Most recent position reported by Mode-S A1442F.

Country allocation

The ICAO 24-bit address A1442F 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
SWA1691 - 7 2026-07-03
SWA306 - 6 2026-07-19
SWA112 Southwest Airlines 6 2026-07-19
SWA1263 - 5 2026-07-11
SWA751 - 4 2026-06-24
SWA684 Southwest Airlines 4 2026-04-17
SWA502 Southwest Airlines 4 2026-07-20
SWA4474 Southwest Airlines 4 2026-04-18
SWA4074 Southwest Airlines 4 2026-05-29
SWA3114 Southwest Airlines 4 2026-04-15
SWA2606 Southwest Airlines 4 2026-07-20
SWA965 - 3 2026-06-16
SWA787 Southwest Airlines 3 2026-07-24
SWA752 - 3 2026-06-30
SWA699 Southwest Airlines 3 2026-04-24
SWA589 Southwest Airlines 3 2026-07-24
SWA566 Southwest Airlines 3 2026-06-07
SWA4471 - 3 2026-07-11
SWA4335 Southwest Airlines 3 2026-04-28
SWA4047 - 3 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 SWA940 DAL → MAF Jul 25, 23:10 UTCJul 26, 00:40 UTC1h 30m
2026-07-25 SWA940 DAL → MAF Jul 25, 23:05 UTCJul 26, 00:35 UTC1h 30m
2026-07-25 SWA2269 MDW → BOS Jul 25, 20:30 UTCJul 25, 22:10 UTC1h 40m
2026-07-25 SWA2269 MDW → BOS Jul 25, 20:26 UTCJul 25, 22:10 UTC1h 44m
2026-07-25 SWA1585 ONT → OAK Jul 25, 17:55 UTCJul 25, 19:05 UTC1h 10m
2026-07-25 SWA1585 ONT → OAK Jul 25, 17:50 UTCJul 25, 19:02 UTC1h 12m
2026-07-25 SWA1585 ONT → OAK Jul 25, 15:10 UTCJul 25, 16:50 UTC1h 40m
2026-07-25 SWA4403 TPA → BWI Jul 25, 11:30 UTCJul 25, 14:00 UTC2h 30m
2026-07-25 SWA468 BWI → TPA Jul 25, 01:55 UTCJul 25, 03:15 UTC1h 20m
2026-07-25 SWA468 BWI → TPA Jul 25, 01:53 UTCJul 25, 03:15 UTC1h 22m
2026-07-24 SWA277 BUR → DEN Jul 24, 23:25 UTCJul 25, 00:50 UTC1h 25m
2026-07-24 SWA277 BUR → DEN Jul 24, 21:45 UTCJul 24, 22:25 UTC40m
2026-07-24 SWA589 CUN → AUS Jul 24, 17:35 UTCJul 24, 19:30 UTC1h 55m
2026-07-24 SWA718 AUS → CUN Jul 24, 13:50 UTCJul 24, 15:55 UTC2h 5m
2026-07-24 SWA2108 BWI → BOS Jul 24, 10:05 UTCJul 24, 12:05 UTC2h 0m
2026-07-24 SWA4591 SBA → OAK Jul 24, 03:45 UTCJul 24, 05:50 UTC2h 5m
2026-07-24 SWA787 CMH → BWI Jul 24, 00:50 UTCJul 24, 02:15 UTC1h 25m
2026-07-24 SWA787 CMH → BWI Jul 24, 00:48 UTCJul 24, 02:15 UTC1h 27m
2026-07-23 SWA570 MDW → MSP Jul 23, 19:35 UTCJul 23, 21:35 UTC2h 0m
2026-07-23 SWA3739 BWI → CVG Jul 23, 17:20 UTCJul 23, 17:40 UTC20m
2026-07-23 SWA3739 BWI → CVG Jul 23, 17:19 UTCJul 23, 18:16 UTC57m
2026-07-23 SWA2957 MSY → SAN Jul 23, 15:10 UTCJul 23, 16:10 UTC1h 0m
2026-07-23 SWA4231 ELP → HOU Jul 23, 12:25 UTCJul 23, 13:30 UTC1h 5m
2026-07-23 SWA4101 PHX → DAL Jul 23, 06:15 UTCJul 23, 07:45 UTC1h 30m
2026-07-23 SWA4317 HOU → LGA Jul 23, 04:20 UTCJul 23, 05:10 UTC50m
2026-07-23 SWA4317 HOU → LGA Jul 23, 04:16 UTCJul 23, 05:09 UTC53m
2026-07-23 SWA4514 BUR → SJC Jul 23, 02:35 UTCJul 23, 03:25 UTC50m
2026-07-23 SWA4514 BUR → SJC Jul 23, 00:30 UTCJul 23, 01:25 UTC55m
2026-07-22 SWA4300 BOI → LGB Jul 22, 20:35 UTCJul 22, 23:10 UTC2h 35m
2026-07-22 SWA3492 OAK → LGB Jul 22, 02:10 UTCJul 22, 04:55 UTC2h 45m
2026-07-21 SWA3981 SEA → SAN Jul 21, 22:25 UTCJul 22, 01:00 UTC2h 35m
2026-07-21 SWA3981 - Jul 21, 17:25 UTCJul 21, 21:05 UTC3h 40m
2026-07-21 SWA1592 AUS → ORD Jul 21, 13:15 UTCJul 21, 14:00 UTC45m
2026-07-21 SWA2133 OAK → LAS Jul 21, 11:00 UTCJul 21, 11:35 UTC35m
2026-07-21 SWA4591 SBA → OAK Jul 21, 01:50 UTCJul 21, 03:45 UTC1h 55m
2026-07-20 SWA787 CMH → BWI Jul 20, 23:00 UTCJul 21, 00:30 UTC1h 30m
2026-07-20 SWA2606 LGB → OAK Jul 20, 20:25 UTCJul 20, 21:55 UTC1h 30m
2026-07-20 SWA502 BOS → BWI Jul 20, 15:13 UTCJul 20, 17:55 UTC2h 42m
2026-07-20 SWA502 BOS → BWI Jul 20, 15:15 UTCJul 20, 18:00 UTC2h 45m
2026-07-19 SWA112 HOU → SJO Jul 19, 21:40 UTCJul 20, 00:45 UTC3h 5m
2026-07-19 SWA306 - Jul 19, 17:25 UTCJul 19, 19:20 UTC1h 55m
2026-07-19 SWA315 HOU → CUN Jul 19, 14:05 UTCJul 19, 15:45 UTC1h 40m
2026-07-18 SWA4547 - Jul 18, 11:15 UTCJul 18, 12:00 UTC45m
2026-07-18 SWA4547 MSY → HOU Jul 18, 11:11 UTCJul 18, 11:59 UTC48m
2026-07-18 SWA2836 MDW → MSY Jul 18, 03:10 UTCJul 18, 05:00 UTC1h 50m
2026-07-18 SWA2836 MDW → MSY Jul 18, 03:10 UTCJul 18, 05:00 UTC1h 50m
2026-07-17 SWA217 CUN → MDW Jul 17, 21:30 UTCJul 18, 00:35 UTC3h 5m
2026-07-17 SWA217 CUN → MDW Jul 17, 21:26 UTCJul 18, 00:29 UTC3h 4m
2026-07-17 SWA386 BNA → CUN Jul 17, 17:20 UTCJul 17, 19:40 UTC2h 20m
2026-07-17 SWA4638 SJC → LAX Jul 17, 14:00 UTCJul 17, 15:44 UTC1h 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 N1808U page for operator, model, and routing details .

Mode-S A1442F frequently asked

What is Mode-S code A1442F?
A1442F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1808U.
Where is Mode-S A1442F registered?
Mode-S code A1442F 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 A1442F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 01:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1442F, octal 50242057, decimal 10,568,751.
What flights does A1442F operate?
Mode-S A1442F has broadcast 20 distinct callsigns, including SWA1691, SWA306, SWA112, SWA1263, SWA751.