Apparatus

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sensors Mode-S transponder

A80CA9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N618CA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
A80CA9
Octal
52006251
Decimal
11,013,289
Country
US
Tail
N618CA
Type
C402
No current signal · last broadcast 12h ago
Flights observed
95
Distinct callsigns
15
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A80CA9.

Country allocation

The ICAO 24-bit address A80CA9 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 15 distinct

Callsign Airline Flights Last seen
KAP278 Cape Air 12 2026-05-22
KAP189 Cape Air 12 2026-04-20
KAP98 Cape Air 11 2026-05-08
KAP876 Cape Air 11 2026-05-06
KAP350 Cape Air 11 2026-05-21
KAP91 Cape Air 8 2026-05-28
KAP635 Cape Air 6 2026-05-13
KAP107 Cape Air 6 2026-05-16
KAP64 Cape Air 5 2026-05-25
KAP1271 Cape Air 5 2026-04-25
KAP2296 Cape Air 3 2026-05-30
KAP65 Cape Air 2 2026-04-18
KAP48 Cape Air 1 2026-06-02
KAP37 Cape Air 1 2026-06-01
KAP1903 Cape Air 1 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 KAP48 STT → NEV Jun 2, 13:10 UTCJun 2, 13:30 UTC20m
2026-06-01 KAP37 BOS → LEB Jun 1, 17:05 UTCJun 1, 17:20 UTC15m
2026-05-30 KAP2296 STT → SKB May 30, 19:35 UTCMay 30, 19:50 UTC15m
2026-05-30 KAP2296 STT → SKB May 30, 18:10 UTCMay 30, 18:30 UTC20m
2026-05-30 KAP2296 STT → SKB May 30, 17:05 UTCMay 30, 17:20 UTC15m
2026-05-28 KAP91 BOS → RKD May 28, 17:15 UTCMay 28, 17:35 UTC20m
2026-05-28 KAP91 BOS → RKD May 28, 16:00 UTCMay 28, 16:15 UTC15m
2026-05-28 KAP91 BOS → RKD May 28, 12:05 UTCMay 28, 12:25 UTC20m
2026-05-27 KAP91 BOS → RKD May 27, 21:40 UTCMay 27, 21:50 UTC10m
2026-05-27 KAP91 BOS → RKD May 27, 19:45 UTCMay 27, 20:05 UTC20m
2026-05-27 KAP91 BOS → RKD May 27, 16:05 UTCMay 27, 16:20 UTC15m
2026-05-27 KAP91 BOS → RKD May 27, 14:15 UTCMay 27, 14:25 UTC10m
2026-05-27 KAP91 BOS → RKD May 27, 12:30 UTCMay 27, 12:50 UTC20m
2026-05-25 KAP64 STT → STX May 25, 18:45 UTCMay 25, 19:00 UTC15m
2026-05-25 KAP64 STT → STX May 25, 17:25 UTCMay 25, 17:45 UTC20m
2026-05-25 KAP64 STT → STX May 25, 16:10 UTCMay 25, 16:25 UTC15m
2026-05-25 KAP64 STT → STX May 25, 14:25 UTCMay 25, 14:40 UTC15m
2026-05-22 KAP278 VQS → SJU May 22, 19:55 UTCMay 22, 20:15 UTC20m
2026-05-22 KAP278 VQS → SJU May 22, 17:45 UTCMay 22, 18:00 UTC15m
2026-05-22 KAP278 VQS → SJU May 22, 16:30 UTCMay 22, 16:45 UTC15m
2026-05-22 KAP278 VQS → SJU May 22, 13:50 UTCMay 22, 14:05 UTC15m
2026-05-21 KAP350 STT → STX May 21, 17:35 UTCMay 21, 18:00 UTC25m
2026-05-21 KAP350 STT → STX May 21, 16:01 UTCMay 21, 16:20 UTC20m
2026-05-20 KAP350 STT → STX May 20, 17:45 UTCMay 20, 18:00 UTC15m
2026-05-20 KAP350 STT → STX May 20, 15:50 UTCMay 20, 16:10 UTC20m
2026-05-17 KAP278 VQS → SJU May 17, 18:40 UTCMay 17, 18:55 UTC15m
2026-05-17 KAP278 VQS → SJU May 17, 17:35 UTCMay 17, 17:45 UTC10m
2026-05-17 KAP278 VQS → SJU May 17, 16:50 UTCMay 17, 17:01 UTC10m
2026-05-17 KAP278 VQS → SJU May 17, 15:40 UTCMay 17, 15:55 UTC15m
2026-05-16 KAP350 STT → STX May 16, 18:45 UTCMay 16, 19:05 UTC20m
2026-05-16 KAP350 STT → STX May 16, 16:35 UTCMay 16, 16:45 UTC10m
2026-05-16 KAP107 BOS → RKD May 16, 14:55 UTCMay 16, 15:16 UTC20m
2026-05-13 KAP635 STT → SJU May 13, 19:25 UTCMay 13, 19:45 UTC20m
2026-05-13 KAP635 STT → SJU May 13, 16:45 UTCMay 13, 17:00 UTC15m
2026-05-13 KAP635 STT → SJU May 13, 14:20 UTCMay 13, 14:35 UTC15m
2026-05-12 KAP635 STT → SJU May 12, 17:55 UTCMay 12, 18:15 UTC20m
2026-05-08 KAP98 STX → SJU May 8, 16:20 UTCMay 8, 16:40 UTC20m
2026-05-08 KAP98 STX → SJU May 8, 14:35 UTCMay 8, 14:50 UTC15m
2026-05-08 KAP98 STX → SJU May 8, 13:20 UTCMay 8, 13:35 UTC15m
2026-05-06 KAP876 SJU → STX May 6, 15:20 UTCMay 6, 15:35 UTC15m
2026-05-06 KAP876 SJU → STX May 6, 13:15 UTCMay 6, 13:25 UTC10m
2026-05-04 KAP107 BOS → RKD May 4, 21:15 UTCMay 4, 21:40 UTC25m
2026-05-04 KAP107 BOS → RKD May 4, 16:05 UTCMay 4, 16:20 UTC15m
2026-05-04 KAP107 BOS → RKD May 4, 14:40 UTCMay 4, 14:50 UTC10m
2026-05-04 KAP107 BOS → RKD May 4, 13:55 UTCMay 4, 14:05 UTC10m
2026-05-04 KAP107 BOS → RKD May 4, 12:55 UTCMay 4, 13:10 UTC15m
2026-05-02 KAP635 STT → SJU May 2, 18:45 UTCMay 2, 19:00 UTC15m
2026-05-02 KAP635 STT → SJU May 2, 15:35 UTCMay 2, 15:50 UTC15m
2026-04-30 KAP876 SJU → STX Apr 30, 17:25 UTCApr 30, 17:40 UTC15m
2026-04-30 KAP876 SJU → STX Apr 30, 15:55 UTCApr 30, 16:10 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 N618CA page for operator, model, and routing details .

Mode-S A80CA9 frequently asked

What is Mode-S code A80CA9?
A80CA9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N618CA.
Where is Mode-S A80CA9 registered?
Mode-S code A80CA9 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 A80CA9 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A80CA9, octal 52006251, decimal 11,013,289.
What flights does A80CA9 operate?
Mode-S A80CA9 has broadcast 15 distinct callsigns, including KAP278, KAP189, KAP98, KAP876, KAP350.