Apparatus

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sensors Mode-S transponder

A08BCB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N134TW · operated by TW LEASING LLC

Hex
A08BCB
Octal
50105713
Decimal
10,521,547
Country
US
Tail
N134TW
No current signal · last broadcast 3h ago
Flights observed
202
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A08BCB.

Country allocation

The ICAO 24-bit address A08BCB 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
GPD173 Tradewind Aviation 12 2026-06-04
GPD172 Tradewind Aviation 12 2026-06-04
GPD155 Tradewind Aviation 9 2026-06-03
GPD100 Tradewind Aviation 8 2026-06-02
GPD171 Tradewind Aviation 7 2026-05-31
GPD103 Tradewind Aviation 7 2026-06-02
GPD101 Tradewind Aviation 7 2026-06-02
GPD154 Tradewind Aviation 6 2026-06-03
GPD115 Tradewind Aviation 6 2026-05-29
GPD105 Tradewind Aviation 6 2026-05-26
GPD104 Tradewind Aviation 6 2026-05-18
GPD174 Tradewind Aviation 5 2026-05-28
GPD153 Tradewind Aviation 5 2026-06-07
GPD151 Tradewind Aviation 5 2026-06-07
GPD150 Tradewind Aviation 5 2026-06-07
GPD116 Tradewind Aviation 5 2026-06-07
GPD113 Tradewind Aviation 5 2026-05-21
GPD152 Tradewind Aviation 4 2026-06-07
GPD123 Tradewind Aviation 4 2026-06-06
GPD114 Tradewind Aviation 4 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-07 GPD116 SJU → SBH Jun 7, 21:00 UTCJun 7, 21:25 UTC25m
2026-06-07 GPD153 SBH → SJU Jun 7, 18:05 UTCJun 7, 18:20 UTC15m
2026-06-07 GPD152 SJU → SBH Jun 7, 16:05 UTCJun 7, 16:30 UTC25m
2026-06-07 GPD151 SBH → SJU Jun 7, 14:15 UTCJun 7, 14:30 UTC15m
2026-06-07 GPD150 SJU → SBH Jun 7, 12:15 UTCJun 7, 12:40 UTC25m
2026-06-06 GPD155W SBH → SJU Jun 6, 21:44 UTCJun 6, 22:00 UTC15m
2026-06-06 GPD124 SJU → SBH Jun 6, 17:34 UTCJun 6, 18:00 UTC25m
2026-06-06 GPD123 SBH → SJU Jun 6, 15:50 UTCJun 6, 16:04 UTC15m
2026-06-06 GPD122 SJU → SBH Jun 6, 13:49 UTCJun 6, 14:20 UTC30m
2026-06-05 GPD903 VIJ → SJU Jun 5, 19:20 UTCJun 5, 19:40 UTC20m
2026-06-05 GPD172B SJU → SBH Jun 5, 16:05 UTCJun 5, 16:30 UTC25m
2026-06-04 GPD155B SBH → SJU Jun 4, 21:10 UTCJun 4, 21:35 UTC25m
2026-06-04 GPD174B SJU → SBH Jun 4, 19:15 UTCJun 4, 19:45 UTC30m
2026-06-04 GPD173 SBH → SJU Jun 4, 17:55 UTCJun 4, 18:15 UTC20m
2026-06-04 GPD172 SJU → SBH Jun 4, 16:05 UTCJun 4, 16:30 UTC25m
2026-06-03 GPD155 SBH → SJU Jun 3, 21:20 UTCJun 3, 21:40 UTC20m
2026-06-03 GPD154 SJU → SBH Jun 3, 19:30 UTCJun 3, 19:55 UTC25m
2026-06-02 GPD103 SBH → SJU Jun 2, 15:50 UTCJun 2, 16:10 UTC20m
2026-06-02 GPD102 SJU → SBH Jun 2, 14:00 UTCJun 2, 14:25 UTC25m
2026-06-02 GPD101 SBH → SJU Jun 2, 12:30 UTCJun 2, 12:50 UTC20m
2026-06-02 GPD100 SJU → SBH Jun 2, 10:45 UTCJun 2, 11:10 UTC25m
2026-06-01 GPD155 SBH → SJU Jun 1, 22:00 UTCJun 1, 22:20 UTC20m
2026-06-01 GPD154 SJU → SBH Jun 1, 20:05 UTCJun 1, 20:35 UTC30m
2026-06-01 GPD509 - Jun 1, 14:15 UTCJun 1, 14:45 UTC30m
2026-06-01 GPD324 - Jun 1, 13:05 UTCJun 1, 13:25 UTC20m
2026-05-31 GPD173 SBH → SJU May 31, 17:30 UTCMay 31, 17:50 UTC20m
2026-05-31 GPD172 SJU → SBH May 31, 15:35 UTCMay 31, 16:00 UTC25m
2026-05-31 GPD171 SBH → SJU May 31, 14:10 UTCMay 31, 14:30 UTC20m
2026-05-30 GPD475 PVC → HYA May 30, 18:40 UTCMay 30, 19:10 UTC30m
2026-05-30 GPD173 SBH → SJU May 30, 17:30 UTCMay 30, 17:45 UTC15m
2026-05-30 GPD473 - May 30, 14:20 UTCMay 30, 14:40 UTC20m
2026-05-29 GPD115 SBH → SJU May 29, 19:55 UTCMay 29, 20:15 UTC20m
2026-05-29 GPD114 SJU → SBH May 29, 18:05 UTCMay 29, 18:30 UTC25m
2026-05-29 GPD295 - May 29, 16:25 UTCMay 29, 16:45 UTC20m
2026-05-29 GPD112 SJU → SBH May 29, 13:55 UTCMay 29, 14:20 UTC25m
2026-05-29 GPD111 SBH → SJU May 29, 12:35 UTCMay 29, 12:55 UTC20m
2026-05-29 GPD100 SJU → SBH May 29, 10:45 UTCMay 29, 11:10 UTC25m
2026-05-28 GPD155 SBH → SJU May 28, 21:15 UTCMay 28, 21:35 UTC20m
2026-05-28 GPD174 SJU → SBH May 28, 19:25 UTCMay 28, 19:50 UTC25m
2026-05-28 GPD173 SBH → SJU May 28, 18:10 UTCMay 28, 18:35 UTC25m
2026-05-28 GPD172 SJU → SBH May 28, 15:55 UTCMay 28, 16:20 UTC25m
2026-05-28 GPD171 SBH → SJU May 28, 14:35 UTCMay 28, 14:50 UTC15m
2026-05-27 GPD967B SJU → SBH May 27, 19:00 UTCMay 27, 19:25 UTC25m
2026-05-27 GPD151B SBH → SJU May 27, 14:15 UTCMay 27, 14:40 UTC25m
2026-05-27 GPD150 SJU → SBH May 27, 12:10 UTCMay 27, 12:35 UTC25m
2026-05-26 GPD107 SBH → SJU May 26, 22:54 UTCMay 26, 23:14 UTC20m
2026-05-26 GPD106B SJU → SBH May 26, 21:09 UTCMay 26, 21:40 UTC30m
2026-05-26 GPD105 SBH → SJU May 26, 19:50 UTCMay 26, 20:20 UTC30m
2026-05-26 GPD104B SJU → SBH May 26, 17:35 UTCMay 26, 17:59 UTC25m
2026-05-26 GPD171 SBH → SJU May 26, 14:24 UTCMay 26, 14:45 UTC20m

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 N134TW page for operator, model, and routing details .

Mode-S A08BCB frequently asked

What is Mode-S code A08BCB?
A08BCB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N134TW.
Where is Mode-S A08BCB registered?
Mode-S code A08BCB 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 A08BCB broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A08BCB, octal 50105713, decimal 10,521,547.
What flights does A08BCB operate?
Mode-S A08BCB has broadcast 20 distinct callsigns, including GPD173, GPD172, GPD155, GPD100, GPD171.