sensors Mode-S transponder

AC3053

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8849Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC3053
Octal
53030123
Decimal
11,284,563
Country
US
Tail
N8849Q
Type
B38M
Broadcasting now · callsign SWA2148 · 40,000 ft
Flights observed
15
Distinct callsigns
8
Country
US
Last broadcast
1d ago

Current position

AC3053 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC3053 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 8 distinct

Callsign Airline Flights Last seen
SWA4017 - 3 2026-04-13
SWA3703 - 3 2026-04-13
SWA778 - 2 2026-04-13
SWA361 - 2 2026-04-13
SWA2943 - 2 2026-04-12
SWA367 - 1 2026-04-12
SWA1827 - 1 2026-04-13
SWA1596 - 1 2026-04-13

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWA1827 DEN → CMH Apr 13, 21:24 UTCApr 13, 23:44 UTC2h 20m
2026-04-13 SWA3703 - Apr 13, 19:50 UTCApr 13, 20:20 UTC30m
2026-04-13 SWA3703 - Apr 13, 18:06 UTCApr 13, 20:17 UTC2h 11m
2026-04-13 SWA3703 - Apr 13, 18:06 UTCApr 13, 20:11 UTC2h 5m
2026-04-13 SWA4017 - Apr 13, 16:15 UTCApr 13, 17:15 UTC1h 0m
2026-04-13 SWA4017 - Apr 13, 16:05 UTCApr 13, 17:15 UTC1h 10m
2026-04-13 SWA4017 - Apr 13, 14:56 UTCApr 13, 17:10 UTC2h 14m
2026-04-13 SWA1596 - Apr 13, 12:20 UTCApr 13, 13:45 UTC1h 25m
2026-04-13 SWA778 - Apr 13, 03:59 UTCApr 13, 05:12 UTC1h 13m
2026-04-13 SWA778 - Apr 13, 04:22 UTCApr 13, 05:25 UTC1h 3m
2026-04-13 SWA361 - Apr 13, 03:00 UTCApr 13, 03:15 UTC15m
2026-04-13 SWA361 - Apr 13, 00:43 UTCApr 13, 02:41 UTC1h 58m
2026-04-12 SWA367 - Apr 12, 19:13 UTCApr 12, 21:09 UTC1h 56m
2026-04-12 SWA2943 - Apr 12, 16:00 UTCApr 12, 18:06 UTC2h 6m
2026-04-12 SWA2943 - Apr 12, 17:15 UTCApr 12, 17:50 UTC35m

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 N8849Q page for operator, model, and routing details .

Mode-S AC3053 frequently asked

What is Mode-S code AC3053?
AC3053 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8849Q.
Where is Mode-S AC3053 registered?
Mode-S code AC3053 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 AC3053 broadcasting right now?
Yes. Mode-S AC3053 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC3053, octal 53030123, decimal 11,284,563.
What flights does AC3053 operate?
Mode-S AC3053 has broadcast 8 distinct callsigns, including SWA4017, SWA3703, SWA778, SWA361, SWA2943.