Apparatus

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sensors Mode-S transponder

AA779D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7738A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AA779D
Octal
52473635
Decimal
11,171,741
Country
US
Tail
N7738A
Type
B737
No current signal · last broadcast 4h ago
Flights observed
653
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S AA779D.

Country allocation

The ICAO 24-bit address AA779D 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
SWA644 - 6 2026-06-24
SWA3144 Southwest Airlines 6 2026-04-17
SWA576 Southwest Airlines 5 2026-04-30
SWA3336 - 5 2026-06-19
SWA2748 - 5 2026-04-13
SWA1989 Southwest Airlines 5 2026-05-25
SWA1276 - 5 2026-06-16
SWA819 - 4 2026-06-29
SWA781 Southwest Airlines 4 2026-05-10
SWA724 Southwest Airlines 4 2026-07-07
SWA4724 Southwest Airlines 4 2026-06-06
SWA389 Southwest Airlines 4 2026-06-09
SWA3638 - 4 2026-07-09
SWA3509 - 4 2026-07-09
SWA3472 Southwest Airlines 4 2026-04-23
SWA3463 - 4 2026-04-13
SWA3334 - 4 2026-07-09
SWA3176 Southwest Airlines 4 2026-05-23
SWA2963 Southwest Airlines 4 2026-04-15
SWA2899 Southwest Airlines 4 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA2470 - Jul 14, 22:55 UTCJul 15, 01:35 UTC2h 40m
2026-07-14 SWA2804 - Jul 14, 20:10 UTCJul 14, 21:50 UTC1h 40m
2026-07-14 SWA2804 MDW → LGA Jul 14, 20:06 UTCJul 14, 21:39 UTC1h 33m
2026-07-14 SWA3156 BUR → MDW Jul 14, 15:20 UTCJul 14, 19:00 UTC3h 40m
2026-07-14 SWA586 SMF → BUR Jul 14, 13:15 UTCJul 14, 14:15 UTC1h 0m
2026-07-14 SWA136 DEN → SMF Jul 14, 03:20 UTCJul 14, 05:15 UTC1h 55m
2026-07-14 SWA278 - Jul 14, 00:15 UTCJul 14, 02:05 UTC1h 50m
2026-07-13 SWA278 SFO → LAX Jul 13, 22:00 UTCJul 13, 23:05 UTC1h 5m
2026-07-13 SWA4950 - Jul 13, 19:40 UTCJul 13, 20:35 UTC55m
2026-07-13 SWA4877 - Jul 13, 17:40 UTCJul 13, 18:35 UTC55m
2026-07-13 SWA4877 SJC → LAX Jul 13, 17:40 UTCJul 13, 18:33 UTC53m
2026-07-13 SWA3537 - Jul 13, 15:35 UTCJul 13, 16:30 UTC55m
2026-07-13 SWA4293 SMF → SAN Jul 13, 03:40 UTCJul 13, 05:01 UTC1h 20m
2026-07-13 SWA1209 - Jul 13, 01:10 UTCJul 13, 02:15 UTC1h 5m
2026-07-12 SWA1209 LAS → SNA Jul 12, 23:30 UTCJul 13, 00:10 UTC40m
2026-07-12 SWA3308 - Jul 12, 20:55 UTCJul 12, 22:05 UTC1h 10m
2026-07-12 SWA2336 SBA → OAK Jul 12, 19:01 UTCJul 12, 19:45 UTC45m
2026-07-12 SWA2336 LAS → SBA Jul 12, 17:10 UTCJul 12, 18:01 UTC50m
2026-07-12 SWA2850 - Jul 12, 01:15 UTCJul 12, 03:15 UTC2h 0m
2026-07-12 SWA2850 OMA → LAS Jul 12, 01:15 UTCJul 12, 03:39 UTC2h 24m
2026-07-11 SWA2850 - Jul 11, 22:40 UTCJul 12, 00:25 UTC1h 45m
2026-07-11 SWA4149 - Jul 11, 18:20 UTCJul 11, 21:15 UTC2h 55m
2026-07-11 SWA4149 BWI → HOU Jul 11, 18:20 UTCJul 11, 21:09 UTC2h 49m
2026-07-11 SWA4629 - Jul 11, 14:05 UTCJul 11, 16:45 UTC2h 40m
2026-07-11 SWA4629 HOU → BWI Jul 11, 14:01 UTCJul 11, 16:41 UTC2h 40m
2026-07-11 SWA2645 - Jul 11, 03:05 UTCJul 11, 05:01 UTC1h 55m
2026-07-10 SWA3033 WSG → MCO Jul 10, 23:55 UTCJul 11, 01:45 UTC1h 50m
2026-07-10 SWA3033 - Jul 10, 20:40 UTCJul 10, 22:55 UTC2h 15m
2026-07-10 SWA1283 - Jul 10, 16:50 UTCJul 10, 19:35 UTC2h 45m
2026-07-10 SWA1283 - Jul 10, 14:45 UTCJul 10, 15:50 UTC1h 5m
2026-07-10 SWA3506 - Jul 10, 04:35 UTCJul 10, 05:50 UTC1h 15m
2026-07-10 SWA792 - Jul 10, 02:35 UTCJul 10, 03:30 UTC55m
2026-07-10 SWA792 LAS → RNO Jul 10, 02:35 UTCJul 10, 03:30 UTC55m
2026-07-10 SWA792 BUR → LAS Jul 10, 01:00 UTCJul 10, 01:40 UTC40m
2026-07-09 SWA3638 - Jul 9, 23:00 UTCJul 9, 23:50 UTC50m
2026-07-09 SWA3638 SFO → BUR Jul 9, 22:59 UTCJul 9, 23:45 UTC46m
2026-07-09 SWA3334 PHX → SFO Jul 9, 20:05 UTCJul 9, 21:36 UTC1h 31m
2026-07-09 SWA3334 PHX → SFO Jul 9, 20:05 UTCJul 9, 21:40 UTC1h 35m
2026-07-09 SWA4805 - Jul 9, 17:35 UTCJul 9, 18:55 UTC1h 20m
2026-07-09 SWA146 - Jul 9, 15:00 UTCJul 9, 16:20 UTC1h 20m
2026-07-09 SWA146 ABQ → PHX Jul 9, 13:05 UTCJul 9, 14:00 UTC55m
2026-07-09 SWA3509 SAN → ABQ Jul 9, 03:05 UTCJul 9, 04:30 UTC1h 25m
2026-07-09 SWA3509 - Jul 9, 00:55 UTCJul 9, 02:05 UTC1h 10m
2026-07-08 SWA670 - Jul 8, 23:05 UTCJul 9, 00:05 UTC1h 0m
2026-07-08 SWA670 - Jul 8, 19:25 UTCJul 8, 21:55 UTC2h 30m
2026-07-08 SWA2921 BUR → DAL Jul 8, 15:35 UTCJul 8, 18:15 UTC2h 40m
2026-07-08 SWA2923 OAK → BUR Jul 8, 13:40 UTCJul 8, 14:30 UTC50m
2026-07-08 SWA808 BUR → OAK Jul 8, 04:05 UTCJul 8, 04:55 UTC50m
2026-07-07 SWA1293 - Jul 7, 23:30 UTCJul 8, 03:20 UTC3h 50m
2026-07-07 SWA1427 DCA → BNA Jul 7, 20:40 UTCJul 7, 22:20 UTC1h 40m

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 N7738A page for operator, model, and routing details .

Mode-S AA779D frequently asked

What is Mode-S code AA779D?
AA779D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7738A.
Where is Mode-S AA779D registered?
Mode-S code AA779D 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 AA779D broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA779D, octal 52473635, decimal 11,171,741.
What flights does AA779D operate?
Mode-S AA779D has broadcast 20 distinct callsigns, including SWA644, SWA3144, SWA576, SWA3336, SWA2748.