sensors Mode-S transponder

AC1AFA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8796L · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC1AFA
Octal
53015372
Decimal
11,279,098
Country
US
Tail
N8796L
Type
B38M
No current signal · last broadcast 1d ago
Flights observed
7
Distinct callsigns
7
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC1AFA.

Country allocation

The ICAO 24-bit address AC1AFA 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
SWA3602 - 1 2026-04-14
SWA3133 Southwest Airlines 1 2026-04-12
SWA2980 - 1 2026-04-13
SWA2521 - 1 2026-04-13
SWA2265 - 1 2026-04-13
SWA2254 - 1 2026-04-13
SWA183 Southwest Airlines 1 2026-04-14

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA183 OAK → LAS Apr 14, 06:49 UTCApr 14, 07:08 UTC19m
2026-04-14 SWA3602 - Apr 14, 05:15 UTCApr 14, 05:30 UTC15m
2026-04-13 SWA2254 - Apr 13, 23:38 UTCApr 14, 00:07 UTC29m
2026-04-13 SWA2980 - Apr 13, 22:00 UTCApr 13, 22:27 UTC27m
2026-04-13 SWA2265 - Apr 13, 19:55 UTCApr 13, 20:10 UTC15m
2026-04-13 SWA2521 KOA → HNL Apr 13, 18:05 UTCApr 13, 18:38 UTC33m
2026-04-12 SWA3133 DEN → AUS Apr 12, 17:15 UTCApr 12, 18:20 UTC1h 5m

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 N8796L page for operator, model, and routing details .

Mode-S AC1AFA frequently asked

What is Mode-S code AC1AFA?
AC1AFA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8796L.
Where is Mode-S AC1AFA registered?
Mode-S code AC1AFA 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 AC1AFA broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC1AFA, octal 53015372, decimal 11,279,098.
What flights does AC1AFA operate?
Mode-S AC1AFA has broadcast 7 distinct callsigns, including SWA3602, SWA3133, SWA2980, SWA2521, SWA2265.