Apparatus

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sensors Mode-S transponder

A09B65

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1381A · BOEING 767-300 · operated by MSN 27615 LLC

Hex
A09B65
Octal
50115545
Decimal
10,525,541
Country
US
Tail
N1381A
Type
B763
No current signal · last broadcast 1h ago
Flights observed
146
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A09B65.

Country allocation

The ICAO 24-bit address A09B65 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
CSB7512 21 Air 19 2026-05-28
CSB7509 21 Air 19 2026-05-27
CSB7508 21 Air 16 2026-05-29
CSB7505 21 Air 12 2026-05-23
CSB7504 21 Air 11 2026-05-22
CSB7521 21 Air 10 2026-05-27
CSB7740 21 Air 7 2026-05-20
CSB7592 21 Air 7 2026-05-23
CSB7796 21 Air 6 2026-05-10
CSB7515 21 Air 6 2026-05-24
CSB7507 21 Air 6 2026-05-22
CSB7501 21 Air 6 2026-05-29
CSB7598 21 Air 5 2026-05-27
CSB7797 21 Air 4 2026-05-09
CSB7741 21 Air 3 2026-05-30
CSB7715 21 Air 3 2026-05-23
CSB7510 21 Air 3 2026-05-23
CSB7756 21 Air 1 2026-05-04
CSB7597 21 Air 1 2026-05-26
CSB4430 21 Air 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSB7741 UIO → MIA May 30, 01:30 UTCMay 30, 10:30 UTC9h 0m
2026-05-29 CSB7508 CVG → MIA May 29, 19:20 UTCMay 29, 23:00 UTC3h 40m
2026-05-29 CSB7501 MIA → CVG May 29, 04:35 UTCMay 29, 06:40 UTC2h 5m
2026-05-28 CSB7512 CVG → SJU May 28, 04:10 UTCMay 28, 06:20 UTC2h 10m
2026-05-27 CSB7509 CVG → ORD May 27, 23:10 UTCMay 28, 01:10 UTC2h 0m
2026-05-27 CSB7598 SJU → CVG May 27, 15:15 UTCMay 27, 17:25 UTC2h 10m
2026-05-27 CSB7521 BWI → MIA May 27, 13:00 UTCMay 27, 13:20 UTC20m
2026-05-27 CSB7521 BWI → MIA May 27, 11:05 UTCMay 27, 11:25 UTC20m
2026-05-27 CSB7512 CVG → SJU May 27, 03:59 UTCMay 27, 06:04 UTC2h 5m
2026-05-26 CSB7509 CVG → ORD May 26, 23:10 UTCMay 27, 01:09 UTC2h 0m
2026-05-26 CSB7597 SJU → MIA May 26, 02:00 UTCMay 26, 04:15 UTC2h 15m
2026-05-25 CSB7508 CVG → MIA May 25, 23:19 UTCMay 25, 23:40 UTC20m
2026-05-25 CSB7508 CVG → MIA May 25, 19:54 UTCMay 25, 21:40 UTC1h 45m
2026-05-25 CSB7501 MIA → CVG May 25, 07:25 UTCMay 25, 09:35 UTC2h 10m
2026-05-24 CSB7515 CVG → MIA May 24, 06:05 UTCMay 24, 08:10 UTC2h 5m
2026-05-23 CSB7592 SJU → CVG May 23, 20:25 UTCMay 24, 00:15 UTC3h 50m
2026-05-23 CSB7505 MIA → BWI May 23, 17:45 UTCMay 23, 18:00 UTC15m
2026-05-23 CSB7505 MIA → BWI May 23, 15:50 UTCMay 23, 16:10 UTC20m
2026-05-23 CSB7715 BOG → MIA May 23, 08:25 UTCMay 23, 11:30 UTC3h 5m
2026-05-23 CSB7510 ORD → CVG May 23, 02:45 UTCMay 23, 06:00 UTC3h 15m
2026-05-22 CSB7507 BWI → MIA May 22, 20:10 UTCMay 22, 22:25 UTC2h 15m
2026-05-22 CSB7504 ORD → CVG May 22, 08:15 UTCMay 22, 10:15 UTC2h 0m
2026-05-22 CSB7512 CVG → SJU May 22, 03:45 UTCMay 22, 05:45 UTC2h 0m
2026-05-21 CSB7509 CVG → ORD May 21, 23:10 UTCMay 22, 01:30 UTC2h 20m
2026-05-21 CSB7598 SJU → CVG May 21, 15:40 UTCMay 21, 18:00 UTC2h 20m
2026-05-21 CSB7521 BWI → MIA May 21, 13:20 UTCMay 21, 13:30 UTC10m
2026-05-21 CSB7521 BWI → MIA May 21, 11:30 UTCMay 21, 11:50 UTC20m
2026-05-21 CSB7515 CVG → MIA May 21, 05:25 UTCMay 21, 07:25 UTC2h 0m
2026-05-20 CSB7592 SJU → CVG May 20, 20:25 UTCMay 21, 00:10 UTC3h 45m
2026-05-20 CSB7505 MIA → BWI May 20, 17:45 UTCMay 20, 18:00 UTC15m
2026-05-20 CSB7505 MIA → BWI May 20, 15:55 UTCMay 20, 16:10 UTC15m
2026-05-20 CSB7740 SJU → UIO May 20, 02:35 UTCMay 20, 12:20 UTC9h 46m
2026-05-19 CSB7508 CVG → MIA May 19, 23:40 UTCMay 20, 00:05 UTC25m
2026-05-19 CSB7508 CVG → MIA May 19, 20:25 UTCMay 19, 22:05 UTC1h 40m
2026-05-19 CSB7504 ORD → CVG May 19, 09:05 UTCMay 19, 11:15 UTC2h 10m
2026-05-19 CSB7512 CVG → SJU May 19, 04:05 UTCMay 19, 06:05 UTC2h 0m
2026-05-18 CSB7509 CVG → ORD May 18, 23:25 UTCMay 19, 01:50 UTC2h 25m
2026-05-18 CSB7598 SJU → CVG May 18, 15:35 UTCMay 18, 17:50 UTC2h 15m
2026-05-18 CSB7521 BWI → MIA May 18, 12:50 UTCMay 18, 13:00 UTC10m
2026-05-18 CSB7521 BWI → MIA May 18, 11:00 UTCMay 18, 11:20 UTC20m
2026-05-18 CSB7512 CVG → SJU May 18, 04:05 UTCMay 18, 06:20 UTC2h 15m
2026-05-17 CSB7509 CVG → ORD May 17, 23:30 UTCMay 18, 01:40 UTC2h 10m
2026-05-17 CSB7740 SJU → UIO May 17, 02:20 UTCMay 17, 11:50 UTC9h 30m
2026-05-16 CSB7508 CVG → MIA May 16, 23:10 UTCMay 16, 23:30 UTC20m
2026-05-16 CSB7508 CVG → MIA May 16, 19:55 UTCMay 16, 21:35 UTC1h 40m
2026-05-16 CSB7504 ORD → CVG May 16, 08:26 UTCMay 16, 10:35 UTC2h 10m
2026-05-16 CSB7512 CVG → SJU May 16, 03:40 UTCMay 16, 05:40 UTC2h 0m
2026-05-15 CSB7509 CVG → ORD May 15, 22:50 UTCMay 16, 00:55 UTC2h 5m
2026-05-15 CSB7598 SJU → CVG May 15, 15:50 UTCMay 15, 18:05 UTC2h 15m
2026-05-15 CSB7521 BWI → MIA May 15, 13:05 UTCMay 15, 13:15 UTC10m

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 N1381A page for operator, model, and routing details .

Mode-S A09B65 frequently asked

What is Mode-S code A09B65?
A09B65 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1381A.
Where is Mode-S A09B65 registered?
Mode-S code A09B65 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 A09B65 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A09B65, octal 50115545, decimal 10,525,541.
What flights does A09B65 operate?
Mode-S A09B65 has broadcast 20 distinct callsigns, including CSB7512, CSB7509, CSB7508, CSB7505, CSB7504.