sensors Mode-S transponder

AC247A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8814K · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC247A
Octal
53022172
Decimal
11,281,530
Country
US
Tail
N8814K
Type
B38M
No current signal · last broadcast 1d ago
Flights observed
10
Distinct callsigns
5
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC247A.

Country allocation

The ICAO 24-bit address AC247A 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 5 distinct

Callsign Airline Flights Last seen
SWA4515 - 3 2026-04-13
SWA3357 - 2 2026-04-13
SWA3046 - 2 2026-04-13
SWA1361 Southwest Airlines 2 2026-04-13
SWA4904 - 1 2026-04-12

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWA1361 AUS → ONT Apr 13, 19:50 UTCApr 13, 22:45 UTC2h 55m
2026-04-13 SWA1361 AUS → ONT Apr 13, 18:26 UTCApr 13, 22:29 UTC4h 3m
2026-04-13 SWA4515 - Apr 13, 16:15 UTCApr 13, 17:35 UTC1h 20m
2026-04-13 SWA4515 - Apr 13, 15:50 UTCApr 13, 17:35 UTC1h 45m
2026-04-13 SWA4515 - Apr 13, 13:50 UTCApr 13, 16:15 UTC2h 25m
2026-04-13 SWA3046 - Apr 13, 11:55 UTCApr 13, 12:25 UTC30m
2026-04-13 SWA3046 - Apr 13, 10:35 UTCApr 13, 12:15 UTC1h 40m
2026-04-13 SWA3357 - Apr 13, 02:05 UTCApr 13, 02:15 UTC10m
2026-04-13 SWA3357 - Apr 13, 00:21 UTCApr 13, 01:50 UTC1h 29m
2026-04-12 SWA4904 - Apr 12, 17:09 UTCApr 12, 20:07 UTC2h 58m

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 N8814K page for operator, model, and routing details .

Mode-S AC247A frequently asked

What is Mode-S code AC247A?
AC247A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8814K.
Where is Mode-S AC247A registered?
Mode-S code AC247A 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 AC247A 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 AC247A, octal 53022172, decimal 11,281,530.
What flights does AC247A operate?
Mode-S AC247A has broadcast 5 distinct callsigns, including SWA4515, SWA3357, SWA3046, SWA1361, SWA4904.