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sensors Mode-S transponder

AAAA4A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7868K · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AAAA4A
Octal
52525112
Decimal
11,184,714
Country
US
Tail
N7868K
Type
B737
Broadcasting now · callsign SWA1357 · 4,600 ft
Flights observed
686
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AAAA4A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AAAA4A 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
SWA1761 Southwest Airlines 8 2026-06-16
SWA3118 Southwest Airlines 7 2026-05-10
SWA598 - 6 2026-06-17
SWA2986 Southwest Airlines 6 2026-06-15
SWA188 Southwest Airlines 6 2026-04-16
SWA66 Southwest Airlines 5 2026-06-27
SWA356 - 5 2026-06-22
SWA30 Southwest Airlines 5 2026-05-04
SWA2676 Southwest Airlines 5 2026-04-30
SWA1149 Southwest Airlines 5 2026-05-21
SWA938 Southwest Airlines 4 2026-06-06
SWA781 Southwest Airlines 4 2026-05-03
SWA49 Southwest Airlines 4 2026-06-22
SWA4195 - 4 2026-07-06
SWA389 Southwest Airlines 4 2026-04-17
SWA353 Southwest Airlines 4 2026-06-13
SWA2644 Southwest Airlines 4 2026-05-31
SWA165 Southwest Airlines 4 2026-06-04
SWA1476 Southwest Airlines 4 2026-05-29
SWA1401 Southwest Airlines 4 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA1357 - Jul 14, 18:00 UTCJul 14, 18:30 UTC30m
2026-07-14 SWA3906 - Jul 14, 14:05 UTCJul 14, 16:55 UTC2h 50m
2026-07-14 SWA1395 - Jul 14, 02:25 UTCJul 14, 04:50 UTC2h 25m
2026-07-14 SWA1395 DAL → SAN Jul 14, 02:23 UTCJul 14, 04:51 UTC2h 28m
2026-07-13 SWA4401 LGA → DAL Jul 13, 21:40 UTCJul 14, 00:35 UTC2h 55m
2026-07-13 SWA4731 BNA → LGA Jul 13, 18:15 UTCJul 13, 20:20 UTC2h 5m
2026-07-13 SWA445 - Jul 13, 15:35 UTCJul 13, 16:45 UTC1h 10m
2026-07-13 SWA4459 - Jul 13, 12:15 UTCJul 13, 14:35 UTC2h 20m
2026-07-13 SWA4590 LAS → MCO Jul 13, 06:15 UTCJul 13, 10:15 UTC4h 0m
2026-07-13 SWA4590 LAS → MCO Jul 13, 06:15 UTCJul 13, 10:16 UTC4h 1m
2026-07-13 SWA4753 - Jul 13, 01:20 UTCJul 13, 04:40 UTC3h 20m
2026-07-12 SWA4706 - Jul 12, 21:05 UTCJul 13, 00:20 UTC3h 15m
2026-07-12 SWA3129 BUR → LAS Jul 12, 18:45 UTCJul 12, 19:40 UTC55m
2026-07-12 SWA2590 SJC → BUR Jul 12, 16:50 UTCJul 12, 17:40 UTC50m
2026-07-12 SWA332 - Jul 12, 14:50 UTCJul 12, 15:35 UTC45m
2026-07-12 SWA332 AUS → LAX Jul 12, 11:30 UTCJul 12, 14:01 UTC2h 30m
2026-07-12 SWA4210 SJC → AUS Jul 12, 00:29 UTCJul 12, 03:34 UTC3h 5m
2026-07-12 SWA4210 SJC → AUS Jul 12, 00:30 UTCJul 12, 03:40 UTC3h 10m
2026-07-11 SWA3863 - Jul 11, 22:35 UTCJul 11, 23:25 UTC50m
2026-07-11 SWA4502 - Jul 11, 20:40 UTCJul 11, 21:20 UTC40m
2026-07-11 SWA4025 - Jul 11, 18:45 UTCJul 11, 19:30 UTC45m
2026-07-11 SWA362 - Jul 11, 15:25 UTCJul 11, 16:25 UTC1h 0m
2026-07-11 SWA2430 - Jul 11, 13:40 UTCJul 11, 14:30 UTC50m
2026-07-11 SWA2256 - Jul 11, 06:10 UTCJul 11, 06:50 UTC40m
2026-07-11 SWA2256 PDX → LAS Jul 11, 03:20 UTCJul 11, 05:10 UTC1h 50m
2026-07-11 SWA4908 SAN → PDX Jul 11, 00:29 UTCJul 11, 02:26 UTC1h 57m
2026-07-11 SWA4908 - Jul 11, 00:30 UTCJul 11, 02:30 UTC2h 0m
2026-07-10 SWA4811 - Jul 10, 22:25 UTCJul 10, 23:35 UTC1h 10m
2026-07-10 SWA4811 SJC → SAN Jul 10, 22:25 UTCJul 10, 23:33 UTC1h 8m
2026-07-10 SWA2121 SAN → SJC Jul 10, 20:25 UTCJul 10, 21:25 UTC1h 0m
2026-07-10 SWA2121 LAS → SAN Jul 10, 17:05 UTCJul 10, 17:50 UTC45m
2026-07-10 SWA3993 - Jul 10, 12:30 UTCJul 10, 15:55 UTC3h 25m
2026-07-10 SWA3634 - Jul 10, 06:15 UTCJul 10, 10:00 UTC3h 45m
2026-07-10 SWA4397 LAS → SFO Jul 10, 04:00 UTCJul 10, 05:10 UTC1h 10m
2026-07-10 SWA4116 SMF → LAS Jul 10, 01:56 UTCJul 10, 02:54 UTC58m
2026-07-10 SWA4116 SMF → LAS Jul 10, 02:00 UTCJul 10, 02:55 UTC55m
2026-07-09 SWA4464 - Jul 9, 23:35 UTCJul 10, 00:45 UTC1h 10m
2026-07-09 SWA4464 SAN → SMF Jul 9, 23:30 UTCJul 10, 00:39 UTC1h 9m
2026-07-09 SWA3700 - Jul 9, 20:55 UTCJul 9, 22:00 UTC1h 5m
2026-07-09 SWA4973 LGB → SJC Jul 9, 19:10 UTCJul 9, 20:00 UTC50m
2026-07-09 SWA3795 - Jul 9, 17:00 UTCJul 9, 18:00 UTC1h 0m
2026-07-09 SWA3795 SMF → LGB Jul 9, 16:56 UTCJul 9, 17:59 UTC1h 3m
2026-07-09 SWA4218 DAL → SMF Jul 9, 12:55 UTCJul 9, 16:05 UTC3h 10m
2026-07-09 SWA568 - Jul 9, 06:15 UTCJul 9, 07:20 UTC1h 5m
2026-07-09 SWA4305 - Jul 9, 03:55 UTCJul 9, 05:15 UTC1h 20m
2026-07-08 SWA2747 EUG → DEN Jul 8, 23:30 UTCJul 9, 01:50 UTC2h 20m
2026-07-08 SWA2747 EUG → DEN Jul 8, 23:26 UTCJul 9, 01:44 UTC2h 18m
2026-07-08 SWA3382 - Jul 8, 18:50 UTCJul 8, 20:35 UTC1h 45m
2026-07-08 SWA1677 - Jul 8, 16:40 UTCJul 8, 17:25 UTC45m
2026-07-08 SWA813 BUR → PHX Jul 8, 14:30 UTCJul 8, 15:30 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 N7868K page for operator, model, and routing details .

Mode-S AAAA4A frequently asked

What is Mode-S code AAAA4A?
AAAA4A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7868K.
Where is Mode-S AAAA4A registered?
Mode-S code AAAA4A 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 AAAA4A broadcasting right now?
Yes. Mode-S AAAA4A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAAA4A, octal 52525112, decimal 11,184,714.
What flights does AAAA4A operate?
Mode-S AAAA4A has broadcast 20 distinct callsigns, including SWA1761, SWA3118, SWA598, SWA2986, SWA188.