Apparatus

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sensors Mode-S transponder

AA4D12

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N763EA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
AA4D12
Octal
52446422
Decimal
11,160,850
Country
US
Tail
N763EA
Type
C402
No current signal · last broadcast 8h ago
Flights observed
126
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S AA4D12.

Country allocation

The ICAO 24-bit address AA4D12 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
KAP412 Cape Air 15 2026-06-10
KAP8380 Cape Air 11 2026-06-09
KAP106 Cape Air 10 2026-05-21
KAP95 Cape Air 6 2026-06-07
KAP107 Cape Air 6 2026-05-03
KAP91 Cape Air 5 2026-04-21
KAP527 Cape Air 5 2026-05-26
KAP278 Cape Air 5 2026-05-04
KAP87 Cape Air 4 2026-05-06
KAP811 Cape Air 4 2026-05-25
KAP616 Cape Air 4 2026-06-02
KAP394 Cape Air 4 2026-05-12
KAP30 Cape Air 4 2026-04-22
KAP211 Cape Air 4 2026-04-26
KAP763 Cape Air 3 2026-06-06
KAP235 Cape Air 3 2026-05-22
KAP1271 Cape Air 3 2026-05-01
KAP635 Cape Air 2 2026-04-25
KAP6 Cape Air 2 2026-05-07
KAP519 Cape Air 2 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-10 KAP412 MVY → BOS Jun 10, 20:15 UTCJun 10, 20:35 UTC20m
2026-06-10 KAP412 MVY → BOS Jun 10, 18:05 UTCJun 10, 18:45 UTC40m
2026-06-10 KAP412 MVY → BOS Jun 10, 16:20 UTCJun 10, 16:55 UTC35m
2026-06-10 KAP412 MVY → BOS Jun 10, 15:05 UTCJun 10, 15:45 UTC40m
2026-06-10 KAP412 MVY → BOS Jun 10, 12:10 UTCJun 10, 12:35 UTC25m
2026-06-10 KAP412 MVY → BOS Jun 10, 11:10 UTCJun 10, 11:40 UTC30m
2026-06-09 KAP5573 BOS → SLK Jun 9, 15:15 UTCJun 9, 15:50 UTC35m
2026-06-09 KAP8380 PVD → ISP Jun 9, 11:00 UTCJun 9, 12:00 UTC1h 0m
2026-06-08 KAP8380 PVD → ISP Jun 8, 22:50 UTCJun 8, 23:40 UTC50m
2026-06-08 KAP8380 PVD → ISP Jun 8, 20:55 UTCJun 8, 21:50 UTC55m
2026-06-08 KAP8380 PVD → ISP Jun 8, 19:10 UTCJun 8, 20:10 UTC1h 0m
2026-06-07 KAP95 BOS → RKD Jun 7, 16:15 UTCJun 7, 17:20 UTC1h 5m
2026-06-06 KAP95 BOS → RKD Jun 6, 22:05 UTCJun 6, 22:55 UTC50m
2026-06-06 KAP1838 BHB → BOS Jun 6, 19:40 UTCJun 6, 20:55 UTC1h 15m
2026-06-06 KAP388 BOS → BHB Jun 6, 14:25 UTCJun 6, 15:19 UTC55m
2026-06-06 KAP763 MVY → BOS Jun 6, 13:00 UTCJun 6, 13:30 UTC30m
2026-06-06 KAP763 MVY → BOS Jun 6, 12:20 UTCJun 6, 12:30 UTC10m
2026-06-06 KAP763 MVY → BOS Jun 6, 10:09 UTCJun 6, 11:05 UTC55m
2026-06-05 KAP95 BOS → RKD Jun 5, 23:05 UTCJun 5, 23:45 UTC40m
2026-06-05 KAP95 BOS → RKD Jun 5, 21:05 UTCJun 5, 21:25 UTC20m
2026-06-05 KAP95 BOS → RKD Jun 5, 19:35 UTCJun 5, 20:05 UTC30m
2026-06-05 KAP95 BOS → RKD Jun 5, 17:30 UTCJun 5, 17:55 UTC25m
2026-06-04 KAP412 MVY → BOS Jun 4, 20:15 UTCJun 4, 21:15 UTC1h 0m
2026-06-04 KAP412 MVY → BOS Jun 4, 18:35 UTCJun 4, 18:45 UTC10m
2026-06-04 KAP412 MVY → BOS Jun 4, 16:05 UTCJun 4, 17:20 UTC1h 15m
2026-06-04 KAP412 MVY → BOS Jun 4, 13:40 UTCJun 4, 14:45 UTC1h 5m
2026-06-03 KAP412 MVY → BOS Jun 3, 21:50 UTCJun 3, 22:50 UTC1h 0m
2026-06-03 KAP412 MVY → BOS Jun 3, 20:20 UTCJun 3, 20:45 UTC25m
2026-06-02 KAP616 BOS → ACK Jun 2, 18:55 UTCJun 2, 19:20 UTC25m
2026-06-02 KAP616 BOS → ACK Jun 2, 17:25 UTCJun 2, 17:55 UTC30m
2026-06-02 KAP616 BOS → ACK Jun 2, 16:30 UTCJun 2, 16:40 UTC10m
2026-05-29 KAP111 BOS → LEB May 29, 22:05 UTCMay 29, 22:50 UTC45m
2026-05-29 KAP3181 MVY → BOS May 29, 20:20 UTCMay 29, 20:55 UTC35m
2026-05-29 KAP111 BOS → LEB May 29, 18:55 UTCMay 29, 19:20 UTC25m
2026-05-29 KAP3081 MVY → BOS May 29, 17:30 UTCMay 29, 18:00 UTC30m
2026-05-27 KAP412 MVY → BOS May 27, 22:25 UTCMay 27, 22:45 UTC20m
2026-05-27 KAP412 MVY → BOS May 27, 20:15 UTCMay 27, 20:50 UTC35m
2026-05-27 KAP412 MVY → BOS May 27, 18:05 UTCMay 27, 18:20 UTC15m
2026-05-26 KAP527 BOS → BHB May 26, 19:15 UTCMay 26, 19:30 UTC15m
2026-05-26 KAP527 BOS → BHB May 26, 17:20 UTCMay 26, 17:55 UTC35m
2026-05-26 KAP5181 ACK → BOS May 26, 15:35 UTCMay 26, 16:24 UTC50m
2026-05-26 KAP527 BOS → BHB May 26, 14:35 UTCMay 26, 14:45 UTC10m
2026-05-25 KAP811 MVY → EWB May 25, 16:50 UTCMay 25, 17:10 UTC20m
2026-05-25 KAP811 MVY → EWB May 25, 15:35 UTCMay 25, 16:05 UTC30m
2026-05-25 KAP811 MVY → EWB May 25, 12:55 UTCMay 25, 14:40 UTC1h 45m
2026-05-25 KAP811 MVY → EWB May 25, 11:50 UTCMay 25, 12:15 UTC25m
2026-05-24 KAP527 BOS → BHB May 24, 19:05 UTCMay 24, 19:50 UTC45m
2026-05-24 KAP5241 ACK → BOS May 24, 17:40 UTCMay 24, 18:15 UTC35m
2026-05-24 KAP527 BOS → BHB May 24, 16:20 UTCMay 24, 16:40 UTC20m
2026-05-22 KAP235 BOS → AUG May 22, 22:55 UTCMay 22, 23:05 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 N763EA page for operator, model, and routing details .

Mode-S AA4D12 frequently asked

What is Mode-S code AA4D12?
AA4D12 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N763EA.
Where is Mode-S AA4D12 registered?
Mode-S code AA4D12 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 AA4D12 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA4D12, octal 52446422, decimal 11,160,850.
What flights does AA4D12 operate?
Mode-S AA4D12 has broadcast 20 distinct callsigns, including KAP412, KAP8380, KAP106, KAP95, KAP107.