Apparatus

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sensors Mode-S transponder

A620F5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N494WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A620F5
Octal
51420365
Decimal
10,887,413
Country
US
Tail
N494WN
Type
B737
No current signal · last broadcast 27d ago
Flights observed
499
Distinct callsigns
20
Country
US
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S A620F5.

Country allocation

The ICAO 24-bit address A620F5 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
SWA2347 Southwest Airlines 8 2026-05-20
SWA1157 Southwest Airlines 8 2026-05-27
SWA3581 Southwest Airlines 6 2026-04-15
SWA4636 Southwest Airlines 5 2026-05-14
SWA250 Southwest Airlines 5 2026-04-18
SWA1223 Southwest Airlines 5 2026-06-08
SWA1149 Southwest Airlines 5 2026-05-02
SWA3473 Southwest Airlines 4 2026-05-19
SWA3281 Southwest Airlines 4 2026-05-09
SWA3078 Southwest Airlines 4 2026-06-01
SWA2974 Southwest Airlines 4 2026-05-26
SWA2237 Southwest Airlines 4 2026-05-20
SWA2220 Southwest Airlines 4 2026-05-20
SWA1738 Southwest Airlines 4 2026-06-11
SWA1655 Southwest Airlines 4 2026-05-26
SWA1375 Southwest Airlines 4 2026-06-01
SWA1291 Southwest Airlines 4 2026-05-22
SWA1240 Southwest Airlines 4 2026-05-19
SWA1194 Southwest Airlines 4 2026-05-21
SWA962 Southwest Airlines 3 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-17 SWA8510 SFO → OAK Jun 17, 01:25 UTCJun 17, 02:05 UTC40m
2026-06-17 SWA8510 SFO → OAK Jun 17, 01:21 UTCJun 17, 02:10 UTC49m
2026-06-16 SWA4075 - Jun 16, 20:10 UTCJun 16, 21:15 UTC1h 5m
2026-06-16 SWA4075 BDL → BWI Jun 16, 20:05 UTCJun 16, 21:00 UTC55m
2026-06-16 SWA4369 - Jun 16, 17:24 UTCJun 16, 19:10 UTC1h 45m
2026-06-16 SWA500 - Jun 16, 14:35 UTCJun 16, 16:15 UTC1h 40m
2026-06-16 SWA771 TPA → BUF Jun 16, 11:20 UTCJun 16, 13:40 UTC2h 20m
2026-06-16 SWA1417 - Jun 16, 02:20 UTCJun 16, 04:15 UTC1h 55m
2026-06-16 SWA4677 MHT → BWI Jun 16, 00:29 UTCJun 16, 01:30 UTC1h 0m
2026-06-15 SWA2421 PHX → MSY Jun 15, 20:30 UTCJun 15, 23:09 UTC2h 40m
2026-06-15 SWA2421 - Jun 15, 18:25 UTCJun 15, 19:20 UTC55m
2026-06-15 SWA973 - Jun 15, 16:30 UTCJun 15, 17:15 UTC45m
2026-06-15 SWA973 - Jun 15, 10:35 UTCJun 15, 15:19 UTC4h 45m
2026-06-15 SWA1500 DEN → BWI Jun 15, 02:24 UTCJun 15, 05:04 UTC2h 40m
2026-06-14 SWA2076 - Jun 14, 23:59 UTCJun 15, 01:04 UTC1h 5m
2026-06-14 SWA2076 HOU → SAV Jun 14, 23:58 UTCJun 15, 01:04 UTC1h 7m
2026-06-14 SWA2219 MSY → DAL Jun 14, 21:12 UTCJun 14, 23:01 UTC1h 49m
2026-06-14 SWA2219 MSY → DAL Jun 14, 21:15 UTCJun 14, 23:10 UTC1h 54m
2026-06-14 SWA3129 ALB → BWI Jun 14, 18:45 UTCJun 14, 19:25 UTC40m
2026-06-14 SWA3129 ALB → BWI Jun 14, 18:41 UTCJun 14, 19:25 UTC44m
2026-06-14 SWA2590 SJC → BUR Jun 14, 16:51 UTCJun 14, 17:38 UTC47m
2026-06-14 SWA2590 SJC → BUR Jun 14, 16:55 UTCJun 14, 17:40 UTC45m
2026-06-14 SWA332 MCO → MDW Jun 14, 15:10 UTCJun 14, 16:00 UTC50m
2026-06-14 SWA332 MCO → MDW Jun 14, 15:06 UTCJun 14, 15:54 UTC48m
2026-06-14 SWA332 MCO → MDW Jun 14, 11:25 UTCJun 14, 14:10 UTC2h 45m
2026-06-14 SWA2110 - Jun 14, 00:00 UTCJun 14, 02:15 UTC2h 15m
2026-06-13 SWA1092 HNL → OAK Jun 13, 20:40 UTCJun 13, 23:00 UTC2h 20m
2026-06-13 SWA1092 HNL → OAK Jun 13, 20:38 UTCJun 13, 23:00 UTC2h 22m
2026-06-13 SWA4136 SFO → LAX Jun 13, 17:15 UTCJun 13, 19:25 UTC2h 10m
2026-06-13 SWA2684 SJC → AUS Jun 13, 14:15 UTCJun 13, 16:05 UTC1h 50m
2026-06-13 SWA2684 SJC → AUS Jun 13, 14:11 UTCJun 13, 16:00 UTC1h 49m
2026-06-13 SWA2036 BNA → TPA Jun 13, 11:40 UTCJun 13, 13:05 UTC1h 25m
2026-06-13 SWA352 SJC → SNA Jun 13, 03:45 UTCJun 13, 05:25 UTC1h 39m
2026-06-13 SWA352 SJC → SNA Jun 13, 00:25 UTCJun 13, 02:50 UTC2h 25m
2026-06-12 SWA352 SJC → SNA Jun 12, 22:25 UTCJun 12, 22:55 UTC30m
2026-06-12 SWA29 HOU → IND Jun 12, 20:00 UTCJun 12, 21:00 UTC1h 0m
2026-06-12 SWA29 HOU → IND Jun 12, 17:00 UTCJun 12, 17:55 UTC55m
2026-06-12 SWA2022 DEN → OAK Jun 12, 14:40 UTCJun 12, 15:40 UTC1h 0m
2026-06-12 SWA2022 DEN → OAK Jun 12, 14:35 UTCJun 12, 15:38 UTC1h 3m
2026-06-12 SWA4702 PDX → STL Jun 12, 12:00 UTCJun 12, 13:20 UTC1h 20m
2026-06-12 SWA4702 PDX → STL Jun 12, 11:54 UTCJun 12, 13:21 UTC1h 27m
2026-06-12 SWA3498 SEA → OAK Jun 12, 05:00 UTCJun 12, 06:20 UTC1h 20m
2026-06-12 SWA3498 SEA → OAK Jun 12, 04:59 UTCJun 12, 06:21 UTC1h 22m
2026-06-12 SWA9008 BWI → SYR Jun 12, 03:15 UTCJun 12, 03:55 UTC40m
2026-06-11 SWA4732 BWI → CLE Jun 11, 23:25 UTCJun 12, 01:15 UTC1h 51m
2026-06-11 SWA422 DAL → DEN Jun 11, 21:25 UTCJun 11, 22:35 UTC1h 10m
2026-06-11 SWA422 DAL → DEN Jun 11, 21:22 UTCJun 11, 22:31 UTC1h 9m
2026-06-11 SWA265 LAS → OKC Jun 11, 19:30 UTCJun 11, 20:25 UTC55m
2026-06-11 SWA1738 LGB → SJC Jun 11, 17:30 UTCJun 11, 18:30 UTC1h 0m
2026-06-11 SWA1738 LGB → SJC Jun 11, 17:25 UTCJun 11, 18:24 UTC59m

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 N494WN page for operator, model, and routing details .

Mode-S A620F5 frequently asked

What is Mode-S code A620F5?
A620F5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N494WN.
Where is Mode-S A620F5 registered?
Mode-S code A620F5 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 A620F5 broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A620F5, octal 51420365, decimal 10,887,413.
What flights does A620F5 operate?
Mode-S A620F5 has broadcast 20 distinct callsigns, including SWA2347, SWA1157, SWA3581, SWA4636, SWA250.