sensors Mode-S transponder

AC5B89

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8959Q · operated by SOUTHWEST AIRLINES CO

Hex
AC5B89
Octal
53055611
Decimal
11,295,625
Country
US
Tail
N8959Q
Type
B38M
Broadcasting now · callsign SWA3310 · 39,025 ft
Flights observed
14
Distinct callsigns
7
Country
US
Last broadcast
23h ago

Current position

AC5B89 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC5B89 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
SWA2190 - 4 2026-04-13
SWA2548 - 3 2026-04-13
SWA2007 - 3 2026-04-13
SWA4625 - 1 2026-04-12
SWA4298 - 1 2026-04-13
SWA3886 - 1 2026-04-13
SWA2891 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWA2891 - Apr 13, 22:49 UTCApr 13, 23:54 UTC1h 5m
2026-04-13 SWA4298 SLC → LAX Apr 13, 20:18 UTCApr 13, 21:49 UTC1h 31m
2026-04-13 SWA3886 PHX → SLC Apr 13, 18:15 UTCApr 13, 19:20 UTC1h 5m
2026-04-13 SWA2007 - Apr 13, 16:15 UTCApr 13, 16:35 UTC20m
2026-04-13 SWA2007 - Apr 13, 15:50 UTCApr 13, 16:35 UTC45m
2026-04-13 SWA2007 - Apr 13, 14:54 UTCApr 13, 16:29 UTC1h 35m
2026-04-13 SWA2548 - Apr 13, 12:20 UTCApr 13, 13:35 UTC1h 15m
2026-04-13 SWA2548 - Apr 13, 11:55 UTCApr 13, 13:35 UTC1h 40m
2026-04-13 SWA2548 - Apr 13, 11:15 UTCApr 13, 12:15 UTC1h 0m
2026-04-13 SWA2190 - Apr 13, 03:55 UTCApr 13, 04:25 UTC30m
2026-04-13 SWA2190 - Apr 13, 01:25 UTCApr 13, 04:15 UTC2h 50m
2026-04-12 SWA2190 - Apr 12, 23:55 UTCApr 13, 00:15 UTC20m
2026-04-12 SWA2190 - Apr 12, 19:59 UTCApr 12, 22:05 UTC2h 6m
2026-04-12 SWA4625 - Apr 12, 17:16 UTCApr 12, 18:52 UTC1h 36m

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 N8959Q page for operator, model, and routing details .

Mode-S AC5B89 frequently asked

What is Mode-S code AC5B89?
AC5B89 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8959Q.
Where is Mode-S AC5B89 registered?
Mode-S code AC5B89 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 AC5B89 broadcasting right now?
Yes. Mode-S AC5B89 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC5B89, octal 53055611, decimal 11,295,625.
What flights does AC5B89 operate?
Mode-S AC5B89 has broadcast 7 distinct callsigns, including SWA2190, SWA2548, SWA2007, SWA4625, SWA4298.