sensors Mode-S transponder

AC5E6E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8963Q · operated by SOUTHWEST AIRLINES CO

Hex
AC5E6E
Octal
53057156
Decimal
11,296,366
Country
US
Tail
N8963Q
Type
B38M
No current signal · last broadcast 21h ago
Flights observed
17
Distinct callsigns
9
Country
US
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S AC5E6E.

Country allocation

The ICAO 24-bit address AC5E6E 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
SWA709 - 4 2026-04-13
SWA4548 - 4 2026-04-13
SWA2055 - 2 2026-04-13
SWA1431 - 2 2026-04-13
SWA434 - 1 2026-04-12
SWA4064 - 1 2026-04-12
SWA3693 Southwest Airlines 1 2026-04-14
SWA3479 Southwest Airlines 1 2026-04-13
SWA2993 - 1 2026-04-12

Recent flights last 17

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA3693 SJC → PDX Apr 14, 05:15 UTCApr 14, 07:00 UTC1h 45m
2026-04-13 SWA3479 BNA → BOS Apr 13, 21:18 UTCApr 13, 23:24 UTC2h 6m
2026-04-13 SWA1431 - Apr 13, 19:50 UTCApr 13, 20:20 UTC30m
2026-04-13 SWA1431 - Apr 13, 18:12 UTCApr 13, 20:10 UTC1h 58m
2026-04-13 SWA4548 - Apr 13, 16:15 UTCApr 13, 17:15 UTC1h 0m
2026-04-13 SWA4548 - Apr 13, 15:50 UTCApr 13, 17:15 UTC1h 25m
2026-04-13 SWA4548 - Apr 13, 15:14 UTCApr 13, 17:15 UTC2h 1m
2026-04-13 SWA4548 - Apr 13, 15:25 UTCApr 13, 17:13 UTC1h 48m
2026-04-13 SWA2055 - Apr 13, 12:20 UTCApr 13, 14:15 UTC1h 55m
2026-04-13 SWA2055 - Apr 13, 11:50 UTCApr 13, 12:15 UTC25m
2026-04-13 SWA709 - Apr 13, 04:20 UTCApr 13, 06:15 UTC1h 55m
2026-04-13 SWA709 - Apr 13, 03:55 UTCApr 13, 06:15 UTC2h 20m
2026-04-13 SWA709 - Apr 13, 02:23 UTCApr 13, 05:33 UTC3h 10m
2026-04-13 SWA709 - Apr 13, 01:35 UTCApr 13, 02:05 UTC30m
2026-04-12 SWA2993 - Apr 12, 23:55 UTCApr 13, 00:00 UTC5m
2026-04-12 SWA4064 - Apr 12, 18:50 UTCApr 12, 20:15 UTC1h 25m
2026-04-12 SWA434 - Apr 12, 17:15 UTCApr 12, 17:25 UTC10m

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 N8963Q page for operator, model, and routing details .

Mode-S AC5E6E frequently asked

What is Mode-S code AC5E6E?
AC5E6E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8963Q.
Where is Mode-S AC5E6E registered?
Mode-S code AC5E6E 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 AC5E6E broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC5E6E, octal 53057156, decimal 11,296,366.
What flights does AC5E6E operate?
Mode-S AC5E6E has broadcast 9 distinct callsigns, including SWA709, SWA4548, SWA2055, SWA1431, SWA434.