sensors Mode-S transponder

AAADB2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7876A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AAADB2
Octal
52526662
Decimal
11,185,586
Country
US
Tail
N7876A
Type
B737
Broadcasting now · callsign SWA4404 · 41,000 ft
Flights observed
14
Distinct callsigns
9
Country
US
Last broadcast
23h ago

Current position

AAADB2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AAADB2 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
SWA4320 - 2 2026-04-13
SWA3630 - 2 2026-04-12
SWA1684 - 2 2026-04-13
SWA1675 - 2 2026-04-13
SWA1119 - 2 2026-04-13
SWA2974 - 1 2026-04-13
SWA2744 - 1 2026-04-13
SWA2192 Southwest Airlines 1 2026-04-13
SWA153 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWA2744 - Apr 13, 23:34 UTCApr 14, 00:34 UTC1h 0m
2026-04-13 SWA1119 BUR → LAS Apr 13, 21:38 UTCApr 13, 22:33 UTC55m
2026-04-13 SWA1119 BUR → LAS Apr 13, 21:38 UTCApr 13, 22:23 UTC45m
2026-04-13 SWA4320 - Apr 13, 19:50 UTCApr 13, 20:35 UTC45m
2026-04-13 SWA4320 - Apr 13, 19:41 UTCApr 13, 20:40 UTC59m
2026-04-13 SWA2974 - Apr 13, 17:31 UTCApr 13, 18:39 UTC1h 8m
2026-04-13 SWA1675 - Apr 13, 15:50 UTCApr 13, 16:15 UTC25m
2026-04-13 SWA1675 PHX → LGB Apr 13, 15:17 UTCApr 13, 16:35 UTC1h 18m
2026-04-13 SWA153 - Apr 13, 13:15 UTCApr 13, 14:15 UTC1h 0m
2026-04-13 SWA1684 LAS → ABQ Apr 13, 04:21 UTCApr 13, 05:31 UTC1h 10m
2026-04-13 SWA1684 LAS → ABQ Apr 13, 04:25 UTCApr 13, 05:24 UTC59m
2026-04-13 SWA2192 STL → DEN Apr 13, 01:00 UTCApr 13, 03:35 UTC2h 35m
2026-04-12 SWA3630 - Apr 12, 18:55 UTCApr 12, 20:10 UTC1h 15m
2026-04-12 SWA3630 - Apr 12, 16:49 UTCApr 12, 18:05 UTC1h 16m

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 N7876A page for operator, model, and routing details .

Mode-S AAADB2 frequently asked

What is Mode-S code AAADB2?
AAADB2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7876A.
Where is Mode-S AAADB2 registered?
Mode-S code AAADB2 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 AAADB2 broadcasting right now?
Yes. Mode-S AAADB2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAADB2, octal 52526662, decimal 11,185,586.
What flights does AAADB2 operate?
Mode-S AAADB2 has broadcast 9 distinct callsigns, including SWA4320, SWA3630, SWA1684, SWA1675, SWA1119.