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sensors Mode-S transponder

AA7A3C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7740A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AA7A3C
Octal
52475074
Decimal
11,172,412
Country
US
Tail
N7740A
Type
B737
Broadcasting now · callsign SWA1097 · 13,950 ft
Flights observed
694
Distinct callsigns
20
Country
US
Last broadcast
9m ago

Current position

AA7A3C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA7A3C 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
SWA487 Southwest Airlines 7 2026-05-07
SWA2422 - 7 2026-07-13
SWA1097 - 7 2026-07-14
SWA1090 - 7 2026-07-06
SWA3616 Southwest Airlines 6 2026-04-22
SWA184 - 6 2026-06-19
SWA103 Southwest Airlines 6 2026-06-06
SWA913 - 5 2026-07-07
SWA3778 Southwest Airlines 5 2026-05-04
SWA3335 Southwest Airlines 5 2026-05-08
SWA1768 - 5 2026-07-06
SWA1533 Southwest Airlines 5 2026-04-29
SWA1356 - 5 2026-07-09
SWA1157 Southwest Airlines 5 2026-05-29
SWA948 - 4 2026-07-14
SWA937 - 4 2026-06-30
SWA647 Southwest Airlines 4 2026-07-01
SWA4590 Southwest Airlines 4 2026-04-29
SWA4275 Southwest Airlines 4 2026-05-27
SWA4007 Southwest Airlines 4 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA1097 - Jul 14, 22:00 UTCJul 15, 01:00 UTC2h 59m
2026-07-14 SWA1097 LAS → SMF Jul 14, 19:50 UTCJul 14, 20:55 UTC1h 5m
2026-07-14 SWA1097 DMA → LAS Jul 14, 17:50 UTCJul 14, 18:45 UTC55m
2026-07-14 SWA3555 - Jul 14, 15:55 UTCJul 14, 16:55 UTC1h 0m
2026-07-14 SWA1844 - Jul 14, 13:45 UTCJul 14, 14:35 UTC50m
2026-07-14 SWA948 - Jul 14, 06:00 UTCJul 14, 06:35 UTC35m
2026-07-14 SWA4521 ABQ → SAN Jul 14, 03:14 UTCJul 14, 04:38 UTC1h 24m
2026-07-14 SWA4521 ABQ → SAN Jul 14, 03:15 UTCJul 14, 04:40 UTC1h 25m
2026-07-13 SWA237 - Jul 13, 23:45 UTCJul 14, 01:40 UTC1h 55m
2026-07-13 SWA2422 - Jul 13, 21:35 UTCJul 13, 22:30 UTC55m
2026-07-13 SWA2422 - Jul 13, 19:55 UTCJul 13, 20:20 UTC25m
2026-07-13 SWA2422 - Jul 13, 17:45 UTCJul 13, 18:30 UTC45m
2026-07-13 SWA3464 - Jul 13, 15:50 UTCJul 13, 16:35 UTC45m
2026-07-13 SWA4469 AUS → SAN Jul 13, 11:55 UTCJul 13, 14:15 UTC2h 20m
2026-07-13 SWA4902 MSY → AUS Jul 13, 07:01 UTCJul 13, 08:05 UTC1h 5m
2026-07-13 SWA2485 LAS → MSY Jul 13, 03:01 UTCJul 13, 06:05 UTC3h 5m
2026-07-13 SWA2485 - Jul 13, 01:05 UTCJul 13, 01:45 UTC40m
2026-07-12 SWA2485 SMF → LGB Jul 12, 23:10 UTCJul 13, 00:30 UTC1h 20m
2026-07-12 SWA851 BUR → SMF Jul 12, 21:06 UTCJul 12, 21:56 UTC50m
2026-07-12 SWA851 BUR → SMF Jul 12, 21:10 UTCJul 12, 22:05 UTC55m
2026-07-12 SWA1577 - Jul 12, 19:05 UTCJul 12, 20:01 UTC55m
2026-07-12 SWA1577 - Jul 12, 16:01 UTCJul 12, 18:01 UTC2h 0m
2026-07-12 SWA1577 - Jul 12, 14:25 UTCJul 12, 14:45 UTC20m
2026-07-12 SWA409 - Jul 12, 00:35 UTCJul 12, 00:50 UTC15m
2026-07-11 SWA4213 - Jul 11, 21:35 UTCJul 11, 23:30 UTC1h 55m
2026-07-11 SWA4213 BUR → DEN Jul 11, 21:34 UTCJul 11, 23:28 UTC1h 54m
2026-07-11 SWA1776 LAS → BUR Jul 11, 19:40 UTCJul 11, 20:20 UTC40m
2026-07-11 SWA3090 BUR → LAS Jul 11, 17:30 UTCJul 11, 18:15 UTC45m
2026-07-11 SWA3090 BUR → LAS Jul 11, 17:29 UTCJul 11, 18:11 UTC42m
2026-07-11 SWA2766 PHX → BUR Jul 11, 15:10 UTCJul 11, 16:05 UTC55m
2026-07-11 SWA2766 PHX → BUR Jul 11, 15:06 UTCJul 11, 16:08 UTC1h 2m
2026-07-11 SWA1672 - Jul 11, 06:50 UTCJul 11, 07:50 UTC1h 0m
2026-07-11 SWA1672 LAX → PHX Jul 11, 06:47 UTCJul 11, 07:48 UTC1h 1m
2026-07-11 SWA140 - Jul 11, 04:30 UTCJul 11, 06:05 UTC1h 35m
2026-07-11 SWA140 ABQ → LAX Jul 11, 04:31 UTCJul 11, 05:59 UTC1h 28m
2026-07-11 SWA2755 LAS → ABQ Jul 11, 01:40 UTCJul 11, 02:45 UTC1h 5m
2026-07-11 SWA4199 - Jul 11, 00:00 UTCJul 11, 00:40 UTC40m
2026-07-10 SWA4199 PSP → LAS Jul 10, 23:53 UTCJul 11, 00:35 UTC42m
2026-07-10 SWA4199 - Jul 10, 21:50 UTCJul 10, 22:50 UTC1h 0m
2026-07-10 SWA3517 - Jul 10, 19:15 UTCJul 10, 20:20 UTC1h 5m
2026-07-10 SWA3818 SMF → SAN Jul 10, 16:45 UTCJul 10, 18:00 UTC1h 15m
2026-07-10 SWA3818 SMF → SAN Jul 10, 16:41 UTCJul 10, 17:51 UTC1h 11m
2026-07-10 SWA845 BUR → SMF Jul 10, 14:40 UTCJul 10, 15:40 UTC1h 0m
2026-07-10 SWA1497 DEN → BUR Jul 10, 04:11 UTCJul 10, 06:13 UTC2h 2m
2026-07-10 SWA1497 DEN → BUR Jul 10, 04:15 UTCJul 10, 06:15 UTC2h 0m
2026-07-10 SWA1497 MDW → DEN Jul 10, 00:05 UTCJul 10, 03:00 UTC2h 55m
2026-07-09 SWA1356 - Jul 9, 13:40 UTCJul 9, 15:35 UTC1h 55m
2026-07-09 SWA4465 - Jul 9, 10:15 UTCJul 9, 12:35 UTC2h 20m
2026-07-09 SWA2210 - Jul 9, 01:40 UTCJul 9, 03:25 UTC1h 45m
2026-07-08 SWA5063 - Jul 8, 21:35 UTCJul 8, 23:50 UTC2h 15m

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 N7740A page for operator, model, and routing details .

Mode-S AA7A3C frequently asked

What is Mode-S code AA7A3C?
AA7A3C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7740A.
Where is Mode-S AA7A3C registered?
Mode-S code AA7A3C 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 AA7A3C broadcasting right now?
Yes. Mode-S AA7A3C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA7A3C, octal 52475074, decimal 11,172,412.
What flights does AA7A3C operate?
Mode-S AA7A3C has broadcast 20 distinct callsigns, including SWA487, SWA2422, SWA1097, SWA1090, SWA3616.