sensors Mode-S transponder

AC5041

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8928Q · operated by SOUTHWEST AIRLINES CO

Hex
AC5041
Octal
53050101
Decimal
11,292,737
Country
US
Tail
N8928Q
Type
B38M
No current signal · last broadcast 23h ago
Flights observed
10
Distinct callsigns
7
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S AC5041.

Country allocation

The ICAO 24-bit address AC5041 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
SWA966 - 2 2026-04-13
SWA4219 - 2 2026-04-13
SWA207 - 2 2026-04-13
SWA745 - 1 2026-04-13
SWA3917 - 1 2026-04-12
SWA1837 Southwest Airlines 1 2026-04-13
SWA1080 - 1 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWA1080 - Apr 13, 20:25 UTCApr 13, 23:40 UTC3h 15m
2026-04-13 SWA745 - Apr 13, 16:43 UTCApr 13, 18:51 UTC2h 8m
2026-04-13 SWA966 - Apr 13, 13:30 UTCApr 13, 15:44 UTC2h 14m
2026-04-13 SWA966 - Apr 13, 13:36 UTCApr 13, 15:44 UTC2h 8m
2026-04-13 SWA207 - Apr 13, 11:55 UTCApr 13, 12:15 UTC20m
2026-04-13 SWA207 - Apr 13, 10:55 UTCApr 13, 12:15 UTC1h 20m
2026-04-13 SWA1837 MCO → CMH Apr 13, 01:46 UTCApr 13, 03:02 UTC1h 16m
2026-04-13 SWA4219 - Apr 13, 00:20 UTCApr 13, 00:40 UTC20m
2026-04-12 SWA4219 - Apr 12, 23:55 UTCApr 13, 00:40 UTC45m
2026-04-12 SWA3917 - Apr 12, 17:15 UTCApr 12, 19:50 UTC2h 35m

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 N8928Q page for operator, model, and routing details .

Mode-S AC5041 frequently asked

What is Mode-S code AC5041?
AC5041 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8928Q.
Where is Mode-S AC5041 registered?
Mode-S code AC5041 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 AC5041 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC5041, octal 53050101, decimal 11,292,737.
What flights does AC5041 operate?
Mode-S AC5041 has broadcast 7 distinct callsigns, including SWA966, SWA4219, SWA207, SWA745, SWA3917.