Apparatus

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sensors Mode-S transponder

A6049B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N487WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A6049B
Octal
51402233
Decimal
10,880,155
Country
US
Tail
N487WN
Type
B737
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
604
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A6049B.

Country allocation

The ICAO 24-bit address A6049B 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
SWA3225 - 7 2026-06-20
SWA899 Southwest Airlines 6 2026-05-24
SWA1219 Southwest Airlines 6 2026-05-30
SWA380 Southwest Airlines 5 2026-07-23
SWA2310 Southwest Airlines 5 2026-07-24
SWA9001 Southwest Airlines 4 2026-04-16
SWA568 - 4 2026-06-17
SWA416 Southwest Airlines 4 2026-05-14
SWA3931 Southwest Airlines 4 2026-07-26
SWA3641 Southwest Airlines 4 2026-04-16
SWA3118 - 4 2026-06-24
SWA2720 Southwest Airlines 4 2026-04-23
SWA250 Southwest Airlines 4 2026-05-02
SWA2350 - 4 2026-04-13
SWA2323 Southwest Airlines 4 2026-05-09
SWA2196 - 4 2026-06-19
SWA1573 Southwest Airlines 4 2026-04-17
SWA1530 - 4 2026-06-29
SWA1091 Southwest Airlines 4 2026-05-19
SWA887 Southwest Airlines 3 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1471 SFO → PHX Jul 26, 22:15 UTCJul 26, 22:45 UTC30m
2026-07-26 SWA2552 BOS → MDW Jul 26, 19:30 UTCJul 26, 21:00 UTC1h 30m
2026-07-26 SWA3931 SFO → SAN Jul 26, 16:50 UTCJul 26, 18:30 UTC1h 40m
2026-07-26 SWA3931 SFO → SAN Jul 26, 14:30 UTCJul 26, 15:45 UTC1h 15m
2026-07-26 SWA732 AUS → ONT Jul 26, 11:55 UTCJul 26, 13:00 UTC1h 5m
2026-07-26 SWA1107 SJC → SAN Jul 26, 02:00 UTCJul 26, 04:35 UTC2h 35m
2026-07-26 SWA1107 SJC → SAN Jul 26, 01:10 UTCJul 26, 02:45 UTC1h 35m
2026-07-25 SWA2091 SJC → GEG Jul 25, 23:50 UTCJul 26, 01:43 UTC1h 53m
2026-07-25 SWA2091 SJC → GEG Jul 25, 20:35 UTCJul 25, 22:45 UTC2h 10m
2026-07-25 SWA2091 SJC → GEG Jul 25, 17:30 UTCJul 25, 19:35 UTC2h 5m
2026-07-25 SWA3947 LAS → SEA Jul 25, 14:15 UTCJul 25, 16:15 UTC2h 0m
2026-07-25 SWA3947 LAS → SEA Jul 25, 14:14 UTCJul 25, 16:14 UTC2h 0m
2026-07-25 SWA2973 LAS → OGG Jul 25, 11:30 UTCJul 25, 12:29 UTC1h 0m
2026-07-25 SWA2973 LAS → OGG Jul 25, 11:30 UTCJul 25, 12:30 UTC1h 0m
2026-07-25 SWA2677 STL → MCO Jul 25, 01:40 UTCJul 25, 03:05 UTC1h 25m
2026-07-24 SWA2519 ALB → BWI Jul 24, 21:55 UTCJul 25, 00:10 UTC2h 15m
2026-07-24 SWA2310 SAN → OAK Jul 24, 18:45 UTCJul 24, 20:55 UTC2h 10m
2026-07-24 SWA2310 SAN → OAK Jul 24, 18:42 UTCJul 24, 20:50 UTC2h 8m
2026-07-24 SWA2310 SAN → OAK Jul 24, 17:00 UTCJul 24, 17:45 UTC45m
2026-07-24 SWA2310 SAN → OAK Jul 24, 14:50 UTCJul 24, 15:45 UTC55m
2026-07-24 SWA2310 SAN → OAK Jul 24, 12:50 UTCJul 24, 13:45 UTC55m
2026-07-24 SWA4876 IND → TPA Jul 24, 03:45 UTCJul 24, 04:40 UTC55m
2026-07-24 SWA4485 AUS → SMF Jul 24, 00:40 UTCJul 24, 01:55 UTC1h 15m
2026-07-23 SWA4647 STL → BOS Jul 23, 22:35 UTCJul 23, 23:30 UTC55m
2026-07-23 SWA380 LAX → LAS Jul 23, 19:50 UTCJul 23, 21:25 UTC1h 35m
2026-07-23 SWA380 LAX → LAS Jul 23, 19:39 UTCJul 23, 21:16 UTC1h 37m
2026-07-23 SWA380 LAX → LAS Jul 23, 17:55 UTCJul 23, 18:35 UTC40m
2026-07-23 SWA380 LAX → LAS Jul 23, 14:35 UTCJul 23, 16:40 UTC2h 5m
2026-07-23 SWA4146 CHS → DEN Jul 23, 10:35 UTCJul 23, 12:50 UTC2h 15m
2026-07-23 SWA1481 MSY → FLL Jul 23, 05:10 UTCJul 23, 06:50 UTC1h 40m
2026-07-23 SWA4024 ORD → PHX Jul 23, 01:50 UTCJul 23, 03:50 UTC2h 0m
2026-07-22 SWA4024 ORD → PHX Jul 22, 21:25 UTCJul 22, 22:25 UTC1h 0m
2026-07-22 SWA3317 LGB → OAK Jul 22, 17:50 UTCJul 22, 20:05 UTC2h 15m
2026-07-22 SWA162 SEA → SJC Jul 22, 15:30 UTCJul 22, 16:40 UTC1h 10m
2026-07-22 SWA162 SEA → SJC Jul 22, 15:30 UTCJul 22, 16:43 UTC1h 14m
2026-07-22 SWA2531 PHX → OAK Jul 22, 12:55 UTCJul 22, 14:15 UTC1h 20m
2026-06-30 SWA2567 SJC → SNA Jun 30, 23:55 UTCJul 1, 02:35 UTC2h 40m
2026-06-30 SWA500 - Jun 30, 20:35 UTCJun 30, 22:35 UTC2h 0m
2026-06-30 SWA500 - Jun 30, 17:10 UTCJun 30, 19:25 UTC2h 15m
2026-06-30 SWA500 BUF → BNA Jun 30, 14:35 UTCJun 30, 16:10 UTC1h 35m
2026-06-30 SWA771 TPA → BUF Jun 30, 11:25 UTCJun 30, 13:45 UTC2h 20m
2026-06-30 SWA2910 - Jun 30, 01:14 UTCJun 30, 03:20 UTC2h 6m
2026-06-29 SWA3123 - Jun 29, 20:59 UTCJun 29, 22:30 UTC1h 30m
2026-06-29 SWA3309 - Jun 29, 18:10 UTCJun 29, 18:44 UTC35m
2026-06-29 SWA3309 PHX → OKC Jun 29, 18:10 UTCJun 29, 19:52 UTC1h 42m
2026-06-29 SWA1201 - Jun 29, 16:25 UTCJun 29, 17:19 UTC55m
2026-06-29 SWA1201 - Jun 29, 13:59 UTCJun 29, 15:19 UTC1h 20m
2026-06-29 SWA2446 - Jun 29, 11:35 UTCJun 29, 12:49 UTC1h 15m
2026-06-29 SWA2446 LBB → DEN Jun 29, 11:33 UTCJun 29, 12:42 UTC1h 10m
2026-06-29 SWA1530 - Jun 29, 01:55 UTCJun 29, 02:54 UTC1h 0m

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 N487WN page for operator, model, and routing details .

Mode-S A6049B frequently asked

What is Mode-S code A6049B?
A6049B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N487WN.
Where is Mode-S A6049B registered?
Mode-S code A6049B 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 A6049B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6049B, octal 51402233, decimal 10,880,155.
What flights does A6049B operate?
Mode-S A6049B has broadcast 20 distinct callsigns, including SWA3225, SWA899, SWA1219, SWA380, SWA2310.