Apparatus

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sensors Mode-S transponder

AA635C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N769EA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
AA635C
Octal
52461534
Decimal
11,166,556
Country
US
Tail
N769EA
Type
C402
No current signal · last broadcast 1d ago
Flights observed
121
Distinct callsigns
15
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AA635C.

Country allocation

The ICAO 24-bit address AA635C 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
KAP186 Cape Air 34 2026-05-24
KAP110 Cape Air 33 2026-04-26
KAP713 Cape Air 26 2026-04-27
KAP211 Cape Air 4 2026-05-14
KAP161 Cape Air 4 2026-05-25
KAP635 Cape Air 3 2026-05-30
KAP2296 Cape Air 3 2026-06-01
KAP98 Cape Air 2 2026-05-13
KAP63 Cape Air 2 2026-04-28
KAP30 Cape Air 2 2026-05-21
KAP223 Cape Air 2 2026-05-26
KAP222 Cape Air 2 2026-05-29
KAP1271 Cape Air 2 2026-04-21
KAP87 Cape Air 1 2026-04-24
KAP564 Cape Air 1 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 KAP2296 STT → SKB Jun 1, 16:55 UTCJun 1, 17:05 UTC10m
2026-06-01 KAP2296 STT → SKB Jun 1, 16:15 UTCJun 1, 16:25 UTC10m
2026-05-31 KAP2296 STT → SKB May 31, 17:00 UTCMay 31, 17:15 UTC15m
2026-05-30 KAP635 STT → SJU May 30, 12:10 UTCMay 30, 12:25 UTC15m
2026-05-29 KAP222 SJU → VQS May 29, 16:55 UTCMay 29, 17:10 UTC15m
2026-05-27 KAP635 STT → SJU May 27, 11:30 UTCMay 27, 11:50 UTC20m
2026-05-26 KAP223 BOS → LEB May 26, 18:55 UTCMay 26, 19:10 UTC15m
2026-05-26 KAP223 BOS → LEB May 26, 16:10 UTCMay 26, 16:20 UTC10m
2026-05-25 KAP161 VQS → SJU May 25, 17:40 UTCMay 25, 17:55 UTC15m
2026-05-25 KAP161 VQS → SJU May 25, 16:00 UTCMay 25, 16:15 UTC15m
2026-05-25 KAP161 VQS → SJU May 25, 14:25 UTCMay 25, 14:35 UTC10m
2026-05-25 KAP161 VQS → SJU May 25, 12:55 UTCMay 25, 13:10 UTC15m
2026-05-24 KAP186 STT → SJU May 24, 20:10 UTCMay 24, 20:35 UTC25m
2026-05-24 KAP186 STT → SJU May 24, 18:50 UTCMay 24, 19:00 UTC10m
2026-05-24 KAP186 STT → SJU May 24, 17:40 UTCMay 24, 18:00 UTC20m
2026-05-24 KAP186 STT → SJU May 24, 16:20 UTCMay 24, 16:35 UTC15m
2026-05-24 KAP186 STT → SJU May 24, 15:20 UTCMay 24, 15:40 UTC20m
2026-05-24 KAP186 STT → SJU May 24, 13:50 UTCMay 24, 14:05 UTC15m
2026-05-24 KAP186 STT → SJU May 24, 13:00 UTCMay 24, 13:15 UTC15m
2026-05-23 KAP186 STT → SJU May 23, 22:10 UTCMay 23, 22:20 UTC10m
2026-05-23 KAP186 STT → SJU May 23, 20:20 UTCMay 23, 20:35 UTC15m
2026-05-23 KAP186 STT → SJU May 23, 19:00 UTCMay 23, 19:15 UTC15m
2026-05-23 KAP186 STT → SJU May 23, 17:45 UTCMay 23, 18:10 UTC25m
2026-05-23 KAP186 STT → SJU May 23, 16:30 UTCMay 23, 16:40 UTC10m
2026-05-23 KAP186 STT → SJU May 23, 14:45 UTCMay 23, 15:05 UTC20m
2026-05-23 KAP186 STT → SJU May 23, 13:25 UTCMay 23, 13:40 UTC15m
2026-05-23 KAP186 STT → SJU May 23, 12:25 UTCMay 23, 12:45 UTC20m
2026-05-21 KAP222 SJU → VQS May 21, 11:20 UTCMay 21, 11:35 UTC15m
2026-05-21 KAP30 STT → SJU May 21, 01:45 UTCMay 21, 02:10 UTC25m
2026-05-21 KAP30 STT → SJU May 21, 00:40 UTCMay 21, 01:00 UTC20m
2026-05-18 KAP186 STT → SJU May 18, 21:35 UTCMay 18, 21:55 UTC20m
2026-05-18 KAP186 STT → SJU May 18, 20:05 UTCMay 18, 20:25 UTC20m
2026-05-18 KAP186 STT → SJU May 18, 18:30 UTCMay 18, 18:45 UTC15m
2026-05-18 KAP186 STT → SJU May 18, 17:20 UTCMay 18, 17:40 UTC20m
2026-05-18 KAP186 STT → SJU May 18, 16:20 UTCMay 18, 16:35 UTC15m
2026-05-18 KAP186 STT → SJU May 18, 14:35 UTCMay 18, 14:55 UTC20m
2026-05-18 KAP186 STT → SJU May 18, 13:35 UTCMay 18, 13:50 UTC15m
2026-05-18 KAP186 STT → SJU May 18, 12:20 UTCMay 18, 12:40 UTC20m
2026-05-17 KAP186 STT → SJU May 17, 21:30 UTCMay 17, 21:45 UTC15m
2026-05-17 KAP186 STT → SJU May 17, 19:45 UTCMay 17, 20:05 UTC20m
2026-05-17 KAP186 STT → SJU May 17, 17:50 UTCMay 17, 18:55 UTC1h 5m
2026-05-17 KAP186 STT → SJU May 17, 16:50 UTCMay 17, 17:05 UTC15m
2026-05-17 KAP186 STT → SJU May 17, 14:25 UTCMay 17, 14:45 UTC20m
2026-05-17 KAP186 STT → SJU May 17, 13:20 UTCMay 17, 13:35 UTC15m
2026-05-17 KAP186 STT → SJU May 17, 12:20 UTCMay 17, 12:40 UTC20m
2026-05-16 KAP186 STT → SJU May 16, 20:55 UTCMay 16, 21:10 UTC15m
2026-05-16 KAP186 STT → SJU May 16, 19:45 UTCMay 16, 20:00 UTC15m
2026-05-16 KAP186 STT → SJU May 16, 18:30 UTCMay 16, 18:45 UTC15m
2026-05-16 KAP186 STT → SJU May 16, 15:45 UTCMay 16, 16:10 UTC25m
2026-05-14 KAP211 BOS → ISP May 14, 21:40 UTCMay 14, 21:55 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 N769EA page for operator, model, and routing details .

Mode-S AA635C frequently asked

What is Mode-S code AA635C?
AA635C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N769EA.
Where is Mode-S AA635C registered?
Mode-S code AA635C 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 AA635C 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 AA635C, octal 52461534, decimal 11,166,556.
What flights does AA635C operate?
Mode-S AA635C has broadcast 15 distinct callsigns, including KAP186, KAP110, KAP713, KAP211, KAP161.