sensors Mode-S transponder

ABE475

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8655D · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABE475
Octal
52762165
Decimal
11,265,141
Country
US
Tail
N8655D
Type
B738
No current signal · last broadcast 22h ago
Flights observed
14
Distinct callsigns
8
Country
US
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S ABE475.

Country allocation

The ICAO 24-bit address ABE475 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
SWA3663 - 3 2026-04-13
SWA743 - 2 2026-04-13
SWA4342 - 2 2026-04-12
SWA3728 - 2 2026-04-13
SWA2834 - 2 2026-04-13
SWA3628 - 1 2026-04-13
SWA2761 - 1 2026-04-14
SWA1733 Southwest Airlines 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA2761 - Apr 14, 05:38 UTCApr 14, 06:32 UTC54m
2026-04-13 SWA1733 PHL → BNA Apr 13, 21:05 UTCApr 14, 01:53 UTC4h 48m
2026-04-13 SWA3628 - Apr 13, 17:35 UTCApr 13, 19:30 UTC1h 55m
2026-04-13 SWA3663 - Apr 13, 16:15 UTCApr 13, 16:40 UTC25m
2026-04-13 SWA3663 - Apr 13, 15:50 UTCApr 13, 16:40 UTC50m
2026-04-13 SWA3663 - Apr 13, 15:30 UTCApr 13, 16:15 UTC45m
2026-04-13 SWA3728 - Apr 13, 12:20 UTCApr 13, 14:00 UTC1h 40m
2026-04-13 SWA3728 - Apr 13, 12:10 UTCApr 13, 14:00 UTC1h 50m
2026-04-13 SWA743 - Apr 13, 03:35 UTCApr 13, 04:00 UTC25m
2026-04-13 SWA743 - Apr 13, 01:38 UTCApr 13, 03:17 UTC1h 39m
2026-04-13 SWA2834 - Apr 13, 00:20 UTCApr 13, 00:25 UTC5m
2026-04-12 SWA2834 - Apr 12, 23:55 UTCApr 13, 00:25 UTC30m
2026-04-12 SWA4342 - Apr 12, 18:21 UTCApr 12, 19:31 UTC1h 10m
2026-04-12 SWA4342 - Apr 12, 18:21 UTCApr 12, 19:25 UTC1h 4m

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 N8655D page for operator, model, and routing details .

Mode-S ABE475 frequently asked

What is Mode-S code ABE475?
ABE475 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8655D.
Where is Mode-S ABE475 registered?
Mode-S code ABE475 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 ABE475 broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABE475, octal 52762165, decimal 11,265,141.
What flights does ABE475 operate?
Mode-S ABE475 has broadcast 8 distinct callsigns, including SWA3663, SWA743, SWA4342, SWA3728, SWA2834.