sensors Mode-S transponder

AAAA64

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7869A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AAAA64
Octal
52525144
Decimal
11,184,740
Country
US
Tail
N7869A
Type
B737
Broadcasting now · callsign SWA4546 · 29,000 ft
Flights observed
10
Distinct callsigns
7
Country
US
Last broadcast
1d ago

Current position

AAAA64 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AAAA64 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 7 distinct

Callsign Airline Flights Last seen
SWA4204 - 2 2026-04-13
SWA3593 - 2 2026-04-13
SWA1722 - 2 2026-04-13
SWA980 - 1 2026-04-13
SWA474 - 1 2026-04-12
SWA3530 - 1 2026-04-13
SWA3097 - 1 2026-04-12

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWA4204 - Apr 13, 22:05 UTCApr 13, 23:00 UTC55m
2026-04-13 SWA4204 - Apr 13, 19:55 UTCApr 13, 20:10 UTC15m
2026-04-13 SWA1722 OAK → SEA Apr 13, 16:19 UTCApr 13, 18:14 UTC1h 55m
2026-04-13 SWA1722 - Apr 13, 14:05 UTCApr 13, 15:05 UTC1h 0m
2026-04-13 SWA3593 - Apr 13, 04:20 UTCApr 13, 05:20 UTC1h 0m
2026-04-13 SWA3593 - Apr 13, 03:41 UTCApr 13, 04:55 UTC1h 14m
2026-04-13 SWA980 - Apr 13, 02:01 UTCApr 13, 03:01 UTC1h 0m
2026-04-13 SWA3530 OAK → BUR Apr 13, 00:26 UTCApr 13, 01:16 UTC50m
2026-04-12 SWA3097 - Apr 12, 18:49 UTCApr 12, 20:55 UTC2h 6m
2026-04-12 SWA474 - Apr 12, 17:15 UTCApr 12, 17:35 UTC20m

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 N7869A page for operator, model, and routing details .

Mode-S AAAA64 frequently asked

What is Mode-S code AAAA64?
AAAA64 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7869A.
Where is Mode-S AAAA64 registered?
Mode-S code AAAA64 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 AAAA64 broadcasting right now?
Yes. Mode-S AAAA64 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAAA64, octal 52525144, decimal 11,184,740.
What flights does AAAA64 operate?
Mode-S AAAA64 has broadcast 7 distinct callsigns, including SWA4204, SWA3593, SWA1722, SWA980, SWA474.