sensors Mode-S transponder

AC12BE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8770Q · operated by SOUTHWEST AIRLINES CO

Hex
AC12BE
Octal
53011276
Decimal
11,276,990
Country
US
Tail
N8770Q
Type
B38M
No current signal · last broadcast 15h ago
Flights observed
15
Distinct callsigns
9
Country
US
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S AC12BE.

Country allocation

The ICAO 24-bit address AC12BE 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 9 distinct

Callsign Airline Flights Last seen
SWA1358 - 3 2026-04-13
SWA1141 - 3 2026-04-13
SWA4150 - 2 2026-04-13
SWA2211 - 2 2026-04-13
SWA3046 Southwest Airlines 1 2026-04-14
SWA2842 Southwest Airlines 1 2026-04-12
SWA2480 - 1 2026-04-13
SWA2096 - 1 2026-04-13
SWA1900 Southwest Airlines 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA3046 LAS → ORD Apr 14, 10:20 UTCApr 14, 11:05 UTC45m
2026-04-13 SWA2480 - Apr 13, 22:11 UTCApr 13, 22:54 UTC43m
2026-04-13 SWA2211 - Apr 13, 19:50 UTCApr 13, 21:30 UTC1h 40m
2026-04-13 SWA2211 - Apr 13, 18:50 UTCApr 13, 21:13 UTC2h 23m
2026-04-13 SWA1141 - Apr 13, 16:15 UTCApr 13, 17:45 UTC1h 30m
2026-04-13 SWA1141 - Apr 13, 15:50 UTCApr 13, 17:45 UTC1h 55m
2026-04-13 SWA1141 - Apr 13, 15:30 UTCApr 13, 17:44 UTC2h 14m
2026-04-13 SWA2096 DEN → STL Apr 13, 12:25 UTCApr 13, 13:55 UTC1h 30m
2026-04-13 SWA1358 - Apr 13, 03:55 UTCApr 13, 04:20 UTC25m
2026-04-13 SWA1358 SLC → DEN Apr 13, 03:19 UTCApr 13, 04:16 UTC57m
2026-04-13 SWA1358 - Apr 13, 02:43 UTCApr 13, 03:47 UTC1h 4m
2026-04-13 SWA4150 - Apr 13, 00:14 UTCApr 13, 01:43 UTC1h 29m
2026-04-13 SWA4150 - Apr 13, 00:50 UTCApr 13, 02:01 UTC1h 11m
2026-04-12 SWA1900 LAS → OMA Apr 12, 19:34 UTCApr 12, 21:13 UTC1h 39m
2026-04-12 SWA2842 SJC → BUR Apr 12, 16:32 UTCApr 12, 18:15 UTC1h 43m

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 N8770Q page for operator, model, and routing details .

Mode-S AC12BE frequently asked

What is Mode-S code AC12BE?
AC12BE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8770Q.
Where is Mode-S AC12BE registered?
Mode-S code AC12BE 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 AC12BE broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC12BE, octal 53011276, decimal 11,276,990.
What flights does AC12BE operate?
Mode-S AC12BE has broadcast 9 distinct callsigns, including SWA1358, SWA1141, SWA4150, SWA2211, SWA3046.