sensors Mode-S transponder

AAB146

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7885A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AAB146
Octal
52530506
Decimal
11,186,502
Country
US
Tail
N7885A
Type
B737
No current signal · last broadcast 23h ago
Flights observed
16
Distinct callsigns
7
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S AAB146.

Country allocation

The ICAO 24-bit address AAB146 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
SWA576 Southwest Airlines 6 2026-04-13
SWA2850 - 2 2026-04-13
SWA2743 - 2 2026-04-12
SWA2124 - 2 2026-04-14
SWA116 - 2 2026-04-13
SWA2620 - 1 2026-04-13
SWA1186 - 1 2026-04-13

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA2124 - Apr 14, 07:10 UTCApr 14, 07:40 UTC30m
2026-04-14 SWA2124 - Apr 14, 06:10 UTCApr 14, 07:10 UTC1h 0m
2026-04-13 SWA1186 SAN → SAN Apr 13, 20:01 UTCApr 13, 21:10 UTC1h 9m
2026-04-13 SWA2850 PHX → SAN Apr 13, 18:12 UTCApr 13, 19:04 UTC52m
2026-04-13 SWA2850 PHX → SAN Apr 13, 18:12 UTCApr 13, 19:03 UTC51m
2026-04-13 SWA576 LGA → DAL Apr 13, 16:15 UTCApr 13, 17:00 UTC45m
2026-04-13 SWA576 LGA → DAL Apr 13, 15:50 UTCApr 13, 17:00 UTC1h 10m
2026-04-13 SWA576 LGA → DAL Apr 13, 14:40 UTCApr 13, 16:15 UTC1h 35m
2026-04-13 SWA576 LGA → DAL Apr 13, 12:20 UTCApr 13, 13:25 UTC1h 5m
2026-04-13 SWA576 LGA → DAL Apr 13, 11:55 UTCApr 13, 13:25 UTC1h 30m
2026-04-13 SWA576 LGA → DAL Apr 13, 10:30 UTCApr 13, 12:15 UTC1h 45m
2026-04-13 SWA2620 STL → PIT Apr 13, 01:31 UTCApr 13, 02:54 UTC1h 23m
2026-04-13 SWA116 - Apr 13, 00:20 UTCApr 13, 01:00 UTC40m
2026-04-13 SWA116 - Apr 13, 00:16 UTCApr 13, 01:02 UTC46m
2026-04-12 SWA2743 - Apr 12, 19:10 UTCApr 12, 20:00 UTC50m
2026-04-12 SWA2743 - Apr 12, 17:15 UTCApr 12, 18:00 UTC45m

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 N7885A page for operator, model, and routing details .

Mode-S AAB146 frequently asked

What is Mode-S code AAB146?
AAB146 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7885A.
Where is Mode-S AAB146 registered?
Mode-S code AAB146 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 AAB146 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 AAB146, octal 52530506, decimal 11,186,502.
What flights does AAB146 operate?
Mode-S AAB146 has broadcast 7 distinct callsigns, including SWA576, SWA2850, SWA2743, SWA2124, SWA116.