sensors Mode-S transponder

ABD971

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8626B · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABD971
Octal
52754561
Decimal
11,262,321
Country
US
Tail
N8626B
Type
B738
No current signal · last broadcast 1d ago
Flights observed
13
Distinct callsigns
8
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ABD971.

Country allocation

The ICAO 24-bit address ABD971 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
SWA3080 - 3 2026-04-13
SWA4591 - 2 2026-04-13
SWA2704 Southwest Airlines 2 2026-04-13
SWA1066 - 2 2026-04-13
SWA3350 - 1 2026-04-13
SWA2673 - 1 2026-04-13
SWA2669 - 1 2026-04-12
SWA2075 - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWA2075 - Apr 13, 20:47 UTCApr 13, 23:45 UTC2h 58m
2026-04-13 SWA1066 - Apr 13, 17:17 UTCApr 13, 19:47 UTC2h 30m
2026-04-13 SWA1066 - Apr 13, 17:11 UTCApr 13, 19:36 UTC2h 25m
2026-04-13 SWA3080 - Apr 13, 15:50 UTCApr 13, 16:15 UTC25m
2026-04-13 SWA3080 - Apr 13, 15:16 UTCApr 13, 16:16 UTC1h 0m
2026-04-13 SWA3080 - Apr 13, 15:17 UTCApr 13, 16:12 UTC55m
2026-04-13 SWA3350 - Apr 13, 12:58 UTCApr 13, 14:03 UTC1h 5m
2026-04-13 SWA2673 - Apr 13, 11:00 UTCApr 13, 11:40 UTC40m
2026-04-13 SWA4591 - Apr 13, 04:24 UTCApr 13, 06:28 UTC2h 4m
2026-04-13 SWA4591 LAS → LAS Apr 13, 03:39 UTCApr 13, 05:55 UTC2h 16m
2026-04-13 SWA2704 MCO → OMA Apr 13, 00:20 UTCApr 13, 02:55 UTC2h 35m
2026-04-12 SWA2704 MCO → OMA Apr 12, 23:55 UTCApr 13, 02:55 UTC3h 0m
2026-04-12 SWA2669 - Apr 12, 18:41 UTCApr 12, 20:54 UTC2h 13m

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 N8626B page for operator, model, and routing details .

Mode-S ABD971 frequently asked

What is Mode-S code ABD971?
ABD971 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8626B.
Where is Mode-S ABD971 registered?
Mode-S code ABD971 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 ABD971 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 ABD971, octal 52754561, decimal 11,262,321.
What flights does ABD971 operate?
Mode-S ABD971 has broadcast 8 distinct callsigns, including SWA3080, SWA4591, SWA2704, SWA1066, SWA3350.