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sensors Mode-S transponder

A695D1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N523TW · PILATUS PC-12 · operated by TW LEASING LLC

Hex
A695D1
Octal
51512721
Decimal
10,917,329
Country
US
Tail
N523TW
Type
PC12
No current signal · last broadcast Jul 26, 19:50 UTC
Flights observed
443
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:50 UTC

Last known position

Most recent position reported by Mode-S A695D1.

Country allocation

The ICAO 24-bit address A695D1 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 20 distinct

Callsign Airline Flights Last seen
GPD114 Tradewind Aviation 22 2026-07-26
GPD115 Tradewind Aviation 18 2026-07-26
GPD112 - 18 2026-07-26
GPD151 - 16 2026-07-12
GPD150 - 16 2026-07-12
GPD113 Tradewind Aviation 15 2026-07-26
GPD153 - 14 2026-07-12
GPD152 - 14 2026-07-13
GPD116 Tradewind Aviation 13 2026-07-23
GPD155 - 12 2026-07-18
GPD111 - 12 2026-07-24
GPD172 - 11 2026-07-15
GPD173 - 10 2026-07-15
GPD123 - 10 2026-07-25
GPD126 Tradewind Aviation 9 2026-07-24
GPD124 - 9 2026-07-25
GPD154 - 8 2026-07-12
GPD125 - 8 2026-07-20
GPD904 Tradewind Aviation 7 2026-05-15
GPD174 - 7 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GPD115 SBH → SJU Jul 26, 19:30 UTCJul 26, 19:50 UTC20m
2026-07-26 GPD114 SJU → SBH Jul 26, 17:40 UTCJul 26, 18:05 UTC25m
2026-07-26 GPD113 SBH → SJU Jul 26, 15:50 UTCJul 26, 16:05 UTC15m
2026-07-26 GPD112 - Jul 26, 14:00 UTCJul 26, 14:25 UTC25m
2026-07-26 GPD121 - Jul 26, 12:50 UTCJul 26, 13:05 UTC15m
2026-07-25 GPD124 - Jul 25, 18:00 UTCJul 25, 18:25 UTC25m
2026-07-25 GPD123 - Jul 25, 16:10 UTCJul 25, 16:30 UTC20m
2026-07-25 GPD122 - Jul 25, 14:25 UTCJul 25, 14:50 UTC25m
2026-07-25 GPD917 - Jul 25, 13:30 UTCJul 25, 13:50 UTC20m
2026-07-24 GPD126 SJU → SBH Jul 24, 20:55 UTCJul 24, 21:15 UTC20m
2026-07-24 GPD83 - Jul 24, 19:35 UTCJul 24, 19:55 UTC20m
2026-07-24 GPD124 - Jul 24, 17:45 UTCJul 24, 18:10 UTC25m
2026-07-24 GPD123 - Jul 24, 15:25 UTCJul 24, 15:40 UTC15m
2026-07-24 GPD122 - Jul 24, 13:40 UTCJul 24, 14:05 UTC25m
2026-07-24 GPD111 - Jul 24, 12:40 UTCJul 24, 12:55 UTC15m
2026-07-23 GPD116 SJU → SBH Jul 23, 21:10 UTCJul 23, 21:30 UTC20m
2026-07-23 GPD115 SBH → SJU Jul 23, 19:45 UTCJul 23, 20:05 UTC20m
2026-07-23 GPD114 SJU → SBH Jul 23, 17:50 UTCJul 23, 18:15 UTC25m
2026-07-23 GPD113 - Jul 23, 15:35 UTCJul 23, 15:45 UTC10m
2026-07-23 GPD112 - Jul 23, 13:40 UTCJul 23, 14:10 UTC30m
2026-07-23 GPD131 - Jul 23, 12:35 UTCJul 23, 12:55 UTC20m
2026-07-22 GPD116 SJU → SBH Jul 22, 21:10 UTCJul 22, 21:35 UTC25m
2026-07-22 GPD115 SBH → SJU Jul 22, 19:45 UTCJul 22, 20:00 UTC15m
2026-07-22 GPD114 SJU → SBH Jul 22, 17:55 UTCJul 22, 18:20 UTC25m
2026-07-22 GPD603 AXA → SJU Jul 22, 16:25 UTCJul 22, 16:40 UTC15m
2026-07-22 GPD112 - Jul 22, 13:50 UTCJul 22, 14:10 UTC20m
2026-07-22 GPD111 - Jul 22, 12:30 UTCJul 22, 12:50 UTC20m
2026-07-21 GPD124 - Jul 21, 17:10 UTCJul 21, 17:35 UTC25m
2026-07-21 GPD113 - Jul 21, 15:40 UTCJul 21, 16:15 UTC35m
2026-07-21 GPD112 - Jul 21, 14:00 UTCJul 21, 14:20 UTC20m
2026-07-21 GPD111 - Jul 21, 12:35 UTCJul 21, 12:55 UTC20m
2026-07-20 GPD126 - Jul 20, 20:25 UTCJul 20, 20:45 UTC20m
2026-07-20 GPD125 - Jul 20, 19:15 UTCJul 20, 19:35 UTC20m
2026-07-20 GPD124 - Jul 20, 17:30 UTCJul 20, 17:55 UTC25m
2026-07-20 GPD123 - Jul 20, 15:30 UTCJul 20, 15:45 UTC15m
2026-07-20 GPD122 - Jul 20, 13:40 UTCJul 20, 14:00 UTC20m
2026-07-20 GPD121 - Jul 20, 12:35 UTCJul 20, 12:50 UTC15m
2026-07-19 GPD261 - Jul 19, 19:40 UTCJul 19, 20:10 UTC30m
2026-07-19 GPD123 - Jul 19, 15:35 UTCJul 19, 15:55 UTC20m
2026-07-19 GPD122 - Jul 19, 13:45 UTCJul 19, 14:10 UTC25m
2026-07-18 GPD155 - Jul 18, 21:20 UTCJul 18, 21:40 UTC20m
2026-07-18 GPD124 - Jul 18, 17:45 UTCJul 18, 18:10 UTC25m
2026-07-18 GPD123 - Jul 18, 15:50 UTCJul 18, 16:10 UTC20m
2026-07-18 GPD112 - Jul 18, 14:05 UTCJul 18, 14:30 UTC25m
2026-07-18 GPD111 - Jul 18, 12:35 UTCJul 18, 12:50 UTC15m
2026-07-17 GPD116 - Jul 17, 20:40 UTCJul 17, 21:05 UTC25m
2026-07-17 GPD115 - Jul 17, 19:40 UTCJul 17, 20:00 UTC20m
2026-07-17 GPD114 - Jul 17, 17:55 UTCJul 17, 18:19 UTC25m
2026-07-17 GPD113 - Jul 17, 15:25 UTCJul 17, 15:49 UTC25m
2026-07-17 GPD112 - Jul 17, 13:40 UTCJul 17, 14:10 UTC30m

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 N523TW page for operator, model, and routing details .

Mode-S A695D1 frequently asked

What is Mode-S code A695D1?
A695D1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N523TW.
Where is Mode-S A695D1 registered?
Mode-S code A695D1 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 A695D1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A695D1, octal 51512721, decimal 10,917,329.
What flights does A695D1 operate?
Mode-S A695D1 has broadcast 20 distinct callsigns, including GPD114, GPD115, GPD112, GPD151, GPD150.