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sensors Mode-S transponder

AC425A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8895Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC425A
Octal
53041132
Decimal
11,289,178
Country
US
Tail
N8895Q
Type
B38M
Broadcasting now · callsign SWA1341 · 36,025 ft
Flights observed
675
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AC425A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC425A 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
SWA579 Southwest Airlines 6 2026-06-01
SWA4112 Southwest Airlines 5 2026-04-16
SWA648 - 4 2026-04-13
SWA2717 - 4 2026-06-26
SWA2282 Southwest Airlines 4 2026-05-10
SWA1932 Southwest Airlines 4 2026-05-14
SWA185 Southwest Airlines 4 2026-06-09
SWA1417 Southwest Airlines 4 2026-06-14
SWA1292 Southwest Airlines 4 2026-05-14
SWA995 Southwest Airlines 3 2026-04-28
SWA677 Southwest Airlines 3 2026-05-19
SWA586 - 3 2026-07-10
SWA572 - 3 2026-07-12
SWA3660 - 3 2026-07-13
SWA366 Southwest Airlines 3 2026-05-06
SWA3622 - 3 2026-06-29
SWA3551 - 3 2026-04-15
SWA3432 Southwest Airlines 3 2026-05-16
SWA3385 Southwest Airlines 3 2026-05-30
SWA3325 - 3 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA113 - Jul 14, 01:30 UTCJul 14, 02:30 UTC1h 0m
2026-07-13 SWA3660 - Jul 13, 22:30 UTCJul 13, 23:55 UTC1h 25m
2026-07-13 SWA3660 DCA → DAL Jul 13, 18:40 UTCJul 13, 21:15 UTC2h 35m
2026-07-13 SWA2559 - Jul 13, 14:40 UTCJul 13, 16:30 UTC1h 50m
2026-07-13 SWA2559 DAL → DCA Jul 13, 14:36 UTCJul 13, 17:01 UTC2h 25m
2026-07-13 SWA2559 ABQ → DAL Jul 13, 12:15 UTCJul 13, 13:40 UTC1h 25m
2026-07-13 SWA383 AUS → ABQ Jul 13, 05:05 UTCJul 13, 06:35 UTC1h 30m
2026-07-13 SWA383 AUS → ABQ Jul 13, 05:04 UTCJul 13, 06:26 UTC1h 22m
2026-07-13 SWA2184 LAS → AUS Jul 13, 00:54 UTCJul 13, 03:11 UTC2h 17m
2026-07-13 SWA2184 LAS → AUS Jul 13, 00:55 UTCJul 13, 03:15 UTC2h 20m
2026-07-12 SWA2184 - Jul 12, 22:30 UTCJul 12, 23:15 UTC45m
2026-07-12 SWA3831 - Jul 12, 20:15 UTCJul 12, 21:25 UTC1h 10m
2026-07-12 SWA695 LAS → SMF Jul 12, 18:05 UTCJul 12, 19:10 UTC1h 5m
2026-07-12 SWA695 - Jul 12, 14:10 UTCJul 12, 16:40 UTC2h 30m
2026-07-12 SWA4310 - Jul 12, 10:25 UTCJul 12, 12:45 UTC2h 20m
2026-07-12 SWA572 - Jul 12, 00:55 UTCJul 12, 02:25 UTC1h 30m
2026-07-11 SWA1667 LAS → AUS Jul 11, 22:05 UTCJul 11, 23:42 UTC1h 37m
2026-07-11 SWA1667 MSP → BNA Jul 11, 22:05 UTCJul 11, 23:50 UTC1h 45m
2026-07-11 SWA225 - Jul 11, 18:15 UTCJul 11, 20:55 UTC2h 40m
2026-07-11 SWA3088 - Jul 11, 14:40 UTCJul 11, 15:35 UTC55m
2026-07-11 SWA3088 SNA → PHX Jul 11, 14:36 UTCJul 11, 15:31 UTC55m
2026-07-11 SWA744 DEN → SNA Jul 11, 03:10 UTCJul 11, 05:01 UTC1h 50m
2026-07-10 SWA4020 TPA → DEN Jul 10, 21:50 UTCJul 11, 01:30 UTC3h 40m
2026-07-10 SWA3193 - Jul 10, 19:40 UTCJul 10, 20:45 UTC1h 5m
2026-07-10 SWA3193 - Jul 10, 16:25 UTCJul 10, 18:35 UTC2h 10m
2026-07-10 SWA3890 - Jul 10, 13:15 UTCJul 10, 14:55 UTC1h 40m
2026-07-10 SWA586 - Jul 10, 02:30 UTCJul 10, 05:25 UTC2h 55m
2026-07-10 SWA586 - Jul 10, 00:25 UTCJul 10, 01:05 UTC40m
2026-07-09 SWA586 - Jul 9, 20:55 UTCJul 9, 23:15 UTC2h 20m
2026-07-09 SWA4672 PDX → LAS Jul 9, 17:45 UTCJul 9, 19:30 UTC1h 45m
2026-07-09 SWA4672 PDX → LAS Jul 9, 17:40 UTCJul 9, 19:24 UTC1h 45m
2026-07-09 SWA1377 - Jul 9, 13:00 UTCJul 9, 16:35 UTC3h 35m
2026-07-09 SWA1377 MDW → DAL Jul 9, 10:05 UTCJul 9, 11:45 UTC1h 40m
2026-07-09 SWA3297 - Jul 9, 00:05 UTCJul 9, 03:05 UTC3h 0m
2026-07-08 SWA376 AUS → PHX Jul 8, 20:45 UTCJul 8, 22:45 UTC2h 0m
2026-07-08 SWA2512 MSP → AUS Jul 8, 17:15 UTCJul 8, 19:25 UTC2h 10m
2026-07-08 SWA2512 MSP → AUS Jul 8, 17:11 UTCJul 8, 19:21 UTC2h 10m
2026-07-08 SWA3420 DEN → MSP Jul 8, 14:35 UTCJul 8, 16:05 UTC1h 30m
2026-07-08 SWA4156 - Jul 8, 09:10 UTCJul 8, 13:00 UTC3h 50m
2026-07-08 SWA2416 STL → BOS Jul 8, 01:45 UTCJul 8, 04:05 UTC2h 20m
2026-07-07 SWA920 SMF → STL Jul 7, 20:05 UTCJul 7, 23:20 UTC3h 15m
2026-07-07 SWA920 SMF → STL Jul 7, 20:03 UTCJul 7, 23:18 UTC3h 15m
2026-07-07 SWA300 PDX → SMF Jul 7, 17:40 UTCJul 7, 18:50 UTC1h 10m
2026-07-07 SWA300 DEN → PDX Jul 7, 14:20 UTCJul 7, 16:35 UTC2h 15m
2026-07-07 SWA1778 - Jul 7, 10:25 UTCJul 7, 12:55 UTC2h 30m
2026-07-07 SWA3027 - Jul 7, 00:50 UTCJul 7, 02:10 UTC1h 20m
2026-07-06 SWA3027 - Jul 6, 22:30 UTCJul 6, 23:55 UTC1h 25m
2026-07-06 SWA2903 - Jul 6, 20:30 UTCJul 6, 21:10 UTC40m
2026-07-06 SWA4664 - Jul 6, 17:30 UTCJul 6, 19:15 UTC1h 45m
2026-07-06 SWA2834 - Jul 6, 14:05 UTCJul 6, 16:00 UTC1h 55m

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 N8895Q page for operator, model, and routing details .

Mode-S AC425A frequently asked

What is Mode-S code AC425A?
AC425A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8895Q.
Where is Mode-S AC425A registered?
Mode-S code AC425A 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 AC425A broadcasting right now?
Yes. Mode-S AC425A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC425A, octal 53041132, decimal 11,289,178.
What flights does AC425A operate?
Mode-S AC425A has broadcast 20 distinct callsigns, including SWA579, SWA4112, SWA648, SWA2717, SWA2282.