Apparatus

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sensors Mode-S transponder

AA50C9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N764EA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
AA50C9
Octal
52450311
Decimal
11,161,801
Country
US
Tail
N764EA
Type
C402
No current signal · last broadcast 1d ago
Flights observed
126
Distinct callsigns
14
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AA50C9.

Country allocation

The ICAO 24-bit address AA50C9 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 14 distinct

Callsign Airline Flights Last seen
KAP70 Cape Air 35 2026-06-01
KAP157 Cape Air 16 2026-05-29
KAP15 Cape Air 15 2026-05-21
KAP252 Cape Air 13 2026-05-19
KAP635 Cape Air 9 2026-05-16
KAP65 Cape Air 8 2026-04-20
KAP2 Cape Air 8 2026-05-08
KAP323 Cape Air 7 2026-04-26
KAP592 Cape Air 4 2026-04-16
KAP278 - 3 2026-04-13
KAP47 Cape Air 2 2026-05-20
KAP30 Cape Air 2 2026-05-24
KAP27 Cape Air 2 2026-04-24
KAP189 Cape Air 2 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 KAP70 RUT → BOS Jun 1, 19:45 UTCJun 1, 20:00 UTC15m
2026-06-01 KAP70 RUT → BOS Jun 1, 18:15 UTCJun 1, 18:40 UTC25m
2026-05-31 KAP70 RUT → BOS May 31, 18:50 UTCMay 31, 19:00 UTC10m
2026-05-31 KAP70 RUT → BOS May 31, 17:55 UTCMay 31, 18:05 UTC10m
2026-05-31 KAP70 RUT → BOS May 31, 16:25 UTCMay 31, 16:40 UTC15m
2026-05-31 KAP70 RUT → BOS May 31, 15:40 UTCMay 31, 15:50 UTC10m
2026-05-30 KAP70 RUT → BOS May 30, 18:05 UTCMay 30, 18:20 UTC15m
2026-05-30 KAP70 RUT → BOS May 30, 16:30 UTCMay 30, 16:50 UTC20m
2026-05-30 KAP70 RUT → BOS May 30, 15:35 UTCMay 30, 15:50 UTC15m
2026-05-29 KAP70 RUT → BOS May 29, 19:45 UTCMay 29, 19:55 UTC10m
2026-05-29 KAP157 SJU → VQS May 29, 17:50 UTCMay 29, 18:05 UTC15m
2026-05-29 KAP157 SJU → VQS May 29, 16:20 UTCMay 29, 16:35 UTC15m
2026-05-29 KAP157 SJU → VQS May 29, 15:25 UTCMay 29, 15:40 UTC15m
2026-05-28 KAP157 SJU → VQS May 28, 18:55 UTCMay 28, 19:10 UTC15m
2026-05-28 KAP157 SJU → VQS May 28, 17:25 UTCMay 28, 17:55 UTC30m
2026-05-28 KAP157 SJU → VQS May 28, 15:55 UTCMay 28, 16:10 UTC15m
2026-05-28 KAP157 SJU → VQS May 28, 14:40 UTCMay 28, 15:00 UTC20m
2026-05-27 KAP157 SJU → VQS May 27, 19:45 UTCMay 27, 19:55 UTC10m
2026-05-27 KAP157 SJU → VQS May 27, 14:55 UTCMay 27, 15:10 UTC15m
2026-05-26 KAP157 SJU → VQS May 26, 19:40 UTCMay 26, 19:55 UTC15m
2026-05-26 KAP157 SJU → VQS May 26, 17:44 UTCMay 26, 17:59 UTC15m
2026-05-26 KAP157 SJU → VQS May 26, 16:24 UTCMay 26, 16:40 UTC15m
2026-05-26 KAP70 RUT → BOS May 26, 14:55 UTCMay 26, 15:14 UTC20m
2026-05-25 KAP70 RUT → BOS May 25, 18:45 UTCMay 25, 19:00 UTC15m
2026-05-25 KAP70 RUT → BOS May 25, 17:10 UTCMay 25, 17:25 UTC15m
2026-05-25 KAP70 RUT → BOS May 25, 16:15 UTCMay 25, 16:25 UTC10m
2026-05-25 KAP70 RUT → BOS May 25, 15:10 UTCMay 25, 15:20 UTC10m
2026-05-24 KAP30 STT → SJU May 24, 19:05 UTCMay 24, 19:15 UTC10m
2026-05-24 KAP30 STT → SJU May 24, 18:05 UTCMay 24, 18:15 UTC10m
2026-05-24 KAP70 RUT → BOS May 24, 15:10 UTCMay 24, 15:25 UTC15m
2026-05-23 KAP70 RUT → BOS May 23, 16:30 UTCMay 23, 16:40 UTC10m
2026-05-23 KAP70 RUT → BOS May 23, 15:10 UTCMay 23, 15:20 UTC10m
2026-05-22 KAP70 RUT → BOS May 22, 17:55 UTCMay 22, 18:05 UTC10m
2026-05-22 KAP70 RUT → BOS May 22, 15:55 UTCMay 22, 16:10 UTC15m
2026-05-21 KAP15 EWB → ACK May 21, 19:50 UTCMay 21, 20:10 UTC20m
2026-05-21 KAP15 EWB → ACK May 21, 17:35 UTCMay 21, 17:50 UTC15m
2026-05-21 KAP15 EWB → ACK May 21, 16:10 UTCMay 21, 16:20 UTC10m
2026-05-20 KAP47 STT → SJU May 20, 23:10 UTCMay 20, 23:35 UTC25m
2026-05-20 KAP47 STT → SJU May 20, 19:25 UTCMay 20, 19:55 UTC30m
2026-05-19 KAP252 SJU → VQS May 19, 17:05 UTCMay 19, 17:25 UTC20m
2026-05-18 KAP252 SJU → VQS May 18, 22:50 UTCMay 18, 23:05 UTC15m
2026-05-18 KAP252 SJU → VQS May 18, 20:40 UTCMay 18, 20:55 UTC15m
2026-05-18 KAP252 SJU → VQS May 18, 19:25 UTCMay 18, 19:35 UTC10m
2026-05-18 KAP252 SJU → VQS May 18, 16:45 UTCMay 18, 17:00 UTC15m
2026-05-18 KAP252 SJU → VQS May 18, 15:30 UTCMay 18, 15:45 UTC15m
2026-05-18 KAP252 SJU → VQS May 18, 14:05 UTCMay 18, 14:20 UTC15m
2026-05-17 KAP252 SJU → VQS May 17, 22:35 UTCMay 17, 22:55 UTC20m
2026-05-17 KAP252 SJU → VQS May 17, 20:45 UTCMay 17, 21:05 UTC20m
2026-05-17 KAP252 SJU → VQS May 17, 19:15 UTCMay 17, 19:25 UTC10m
2026-05-17 KAP252 SJU → VQS May 17, 14:05 UTCMay 17, 14:20 UTC15m

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 N764EA page for operator, model, and routing details .

Mode-S AA50C9 frequently asked

What is Mode-S code AA50C9?
AA50C9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N764EA.
Where is Mode-S AA50C9 registered?
Mode-S code AA50C9 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 AA50C9 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA50C9, octal 52450311, decimal 11,161,801.
What flights does AA50C9 operate?
Mode-S AA50C9 has broadcast 14 distinct callsigns, including KAP70, KAP157, KAP15, KAP252, KAP635.