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 13h ago
Flights observed
296
Distinct callsigns
20
Country
US
Last broadcast
13h 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
CSB7508 - 31 2026-07-11
CSB7521 - 26 2026-07-13
CSB7505 - 26 2026-07-12
CSB7512 - 24 2026-07-14
CSB7509 - 24 2026-07-13
CSB7504 - 15 2026-06-26
CSB7592 - 14 2026-07-12
CSB7598 - 13 2026-07-13
CSB7715 - 12 2026-07-10
CSB7515 - 12 2026-07-13
CSB7510 - 12 2026-07-10
CSB7501 - 11 2026-07-11
CSB7796 - 10 2026-07-11
CSB7507 - 10 2026-07-09
CSB7740 - 9 2026-07-12
CSB7555 - 8 2026-07-07
CSB7797 - 7 2026-07-10
CSB7741 - 7 2026-07-01
CSB7506 - 7 2026-07-07
CSB7679 - 4 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSB7512 - Jul 14, 04:25 UTCJul 14, 06:25 UTC2h 0m
2026-07-13 CSB7509 - Jul 13, 23:00 UTCJul 14, 01:10 UTC2h 10m
2026-07-13 CSB7598 - Jul 13, 15:55 UTCJul 13, 18:10 UTC2h 15m
2026-07-13 CSB7521 - Jul 13, 12:55 UTCJul 13, 13:05 UTC10m
2026-07-13 CSB7521 - Jul 13, 10:50 UTCJul 13, 11:10 UTC20m
2026-07-13 CSB7515 - Jul 13, 05:10 UTCJul 13, 07:10 UTC2h 0m
2026-07-12 CSB7592 SJU → CVG Jul 12, 21:00 UTCJul 13, 00:35 UTC3h 35m
2026-07-12 CSB7505 - Jul 12, 18:01 UTCJul 12, 18:15 UTC15m
2026-07-12 CSB7505 - Jul 12, 16:01 UTCJul 12, 16:20 UTC20m
2026-07-12 CSB7740 - Jul 12, 02:30 UTCJul 12, 11:45 UTC9h 15m
2026-07-11 CSB7508 - Jul 11, 20:00 UTCJul 11, 23:50 UTC3h 50m
2026-07-11 CSB7501 - Jul 11, 06:10 UTCJul 11, 08:15 UTC2h 5m
2026-07-11 CSB7796 - Jul 11, 00:35 UTCJul 11, 01:00 UTC25m
2026-07-10 CSB7797 - Jul 10, 16:55 UTCJul 10, 19:30 UTC2h 35m
2026-07-10 CSB7715 - Jul 10, 10:30 UTCJul 10, 13:40 UTC3h 10m
2026-07-10 CSB7510 - Jul 10, 03:00 UTCJul 10, 05:55 UTC2h 55m
2026-07-09 CSB7507 - Jul 9, 20:10 UTCJul 9, 22:20 UTC2h 10m
2026-07-09 CSB7526 - Jul 9, 09:10 UTCJul 9, 10:30 UTC1h 20m
2026-07-09 CSB7525 - Jul 9, 05:10 UTCJul 9, 06:35 UTC1h 25m
2026-07-08 CSB7546 - Jul 8, 23:30 UTCJul 9, 00:55 UTC1h 25m
2026-07-08 CSB7545 - Jul 8, 19:30 UTCJul 8, 20:55 UTC1h 25m
2026-07-07 CSB7506 - Jul 7, 20:50 UTCJul 7, 23:05 UTC2h 15m
2026-07-07 CSB7679 - Jul 7, 13:00 UTCJul 7, 15:15 UTC2h 15m
2026-07-07 CSB7555 - Jul 7, 10:05 UTCJul 7, 10:15 UTC10m
2026-07-07 CSB7555 - Jul 7, 08:10 UTCJul 7, 08:30 UTC20m
2026-07-06 CSB7679 - Jul 6, 12:45 UTCJul 6, 14:55 UTC2h 10m
2026-07-06 CSB7555 - Jul 6, 10:05 UTCJul 6, 10:15 UTC10m
2026-07-06 CSB7555 - Jul 6, 08:10 UTCJul 6, 08:25 UTC15m
2026-07-04 CSB7679 - Jul 4, 13:05 UTCJul 4, 15:20 UTC2h 15m
2026-07-04 CSB7555 - Jul 4, 10:30 UTCJul 4, 10:45 UTC15m
2026-07-04 CSB7555 - Jul 4, 08:35 UTCJul 4, 08:55 UTC20m
2026-07-03 CSB4501 MIA → UIO Jul 3, 13:15 UTCJul 3, 20:50 UTC7h 35m
2026-07-03 CSB7512 BWI → MIA Jul 3, 04:10 UTCJul 3, 06:10 UTC2h 0m
2026-07-02 CSB7509 - Jul 2, 22:50 UTCJul 3, 01:00 UTC2h 10m
2026-07-02 CSB7598 - Jul 2, 16:00 UTCJul 2, 18:15 UTC2h 15m
2026-07-02 CSB7521 - Jul 2, 13:05 UTCJul 2, 13:15 UTC10m
2026-07-02 CSB7521 - Jul 2, 11:10 UTCJul 2, 11:30 UTC20m
2026-07-02 CSB7515 - Jul 2, 04:45 UTCJul 2, 06:51 UTC2h 6m
2026-07-01 CSB7506 - Jul 1, 20:40 UTCJul 1, 22:40 UTC2h 0m
2026-07-01 CSB7741 - Jul 1, 02:30 UTCJul 1, 11:25 UTC8h 55m
2026-06-30 CSB7508 - Jun 30, 23:20 UTCJun 30, 23:40 UTC20m
2026-06-30 CSB7508 - Jun 30, 19:55 UTCJun 30, 21:50 UTC1h 55m
2026-06-30 CSB7501 - Jun 30, 04:45 UTCJun 30, 06:50 UTC2h 5m
2026-06-29 CSB7740 - Jun 29, 02:45 UTCJun 29, 11:39 UTC8h 55m
2026-06-28 CSB7508 - Jun 28, 23:25 UTCJun 28, 23:44 UTC20m
2026-06-28 CSB7508 - Jun 28, 19:59 UTCJun 28, 21:40 UTC1h 40m
2026-06-28 CSB7501 - Jun 28, 04:50 UTCJun 28, 06:55 UTC2h 5m
2026-06-27 CSB7796 - Jun 27, 17:09 UTCJun 28, 01:10 UTC8h 0m
2026-06-27 CSB7715 - Jun 27, 11:14 UTCJun 27, 11:50 UTC35m
2026-06-27 CSB7510 - Jun 27, 03:09 UTCJun 27, 03:34 UTC25m

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 13h 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 CSB7508, CSB7521, CSB7505, CSB7512, CSB7509.