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sensors Mode-S transponder

A28545

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2611X · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC DBA, CAPE AIR

Hex
A28545
Octal
50502505
Decimal
10,650,949
Country
US
Tail
N2611X
Type
C402
No current signal · last broadcast 11h ago
Flights observed
340
Distinct callsigns
20
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A28545.

Country allocation

The ICAO 24-bit address A28545 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
KAP95 Cape Air 36 2026-06-01
KAP519 Cape Air 22 2026-04-18
KAP154 Cape Air 17 2026-06-10
KAP42 Cape Air 16 2026-04-23
KAP413 - 14 2026-07-12
KAP811 - 13 2026-06-30
KAP902 Cape Air 12 2026-06-02
KAP15 - 11 2026-07-13
KAP717 Cape Air 10 2026-04-21
KAP6 - 10 2026-06-28
KAP10 Cape Air 10 2026-06-03
KAP627 Cape Air 9 2026-06-20
KAP876 Cape Air 8 2026-06-22
KAP747 Cape Air 8 2026-05-27
KAP5573 - 7 2026-07-06
KAP402 Cape Air 6 2026-06-02
KAP2041 Cape Air 6 2026-06-08
KAP2001 Cape Air 6 2026-06-03
KAP548 Cape Air 5 2026-05-04
KAP2141 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KAP15 BOS → PVC Jul 13, 16:45 UTCJul 13, 17:05 UTC20m
2026-07-13 KAP15 - Jul 13, 15:35 UTCJul 13, 15:55 UTC20m
2026-07-12 KAP15 - Jul 12, 22:45 UTCJul 12, 23:00 UTC15m
2026-07-12 KAP15 PVC → BOS Jul 12, 18:45 UTCJul 12, 19:15 UTC30m
2026-07-12 KAP15 - Jul 12, 17:01 UTCJul 12, 17:20 UTC20m
2026-07-12 KAP15 - Jul 12, 15:35 UTCJul 12, 15:55 UTC20m
2026-07-12 KAP15 - Jul 12, 14:01 UTCJul 12, 14:20 UTC20m
2026-07-12 KAP15 - Jul 12, 12:05 UTCJul 12, 13:15 UTC1h 10m
2026-07-12 KAP15 - Jul 12, 10:50 UTCJul 12, 11:10 UTC20m
2026-07-12 KAP413 - Jul 12, 00:40 UTCJul 12, 01:00 UTC20m
2026-07-11 KAP6103 - Jul 11, 22:20 UTCJul 11, 23:30 UTC1h 10m
2026-07-11 KAP2141 PVC → BOS Jul 11, 18:40 UTCJul 11, 19:15 UTC35m
2026-07-11 KAP413 BOS → PVC Jul 11, 17:35 UTCJul 11, 17:50 UTC15m
2026-07-11 KAP2042 PVC → BOS Jul 11, 16:10 UTCJul 11, 16:45 UTC35m
2026-07-11 KAP413 - Jul 11, 14:55 UTCJul 11, 15:10 UTC15m
2026-07-11 KAP2021 PVC → BOS Jul 11, 13:20 UTCJul 11, 13:55 UTC35m
2026-07-10 KAP413 - Jul 10, 23:55 UTCJul 11, 00:10 UTC15m
2026-07-10 KAP6103 BOS → BOS Jul 10, 22:05 UTCJul 10, 23:05 UTC1h 0m
2026-07-10 KAP2341 PVC → BOS Jul 10, 20:40 UTCJul 10, 21:10 UTC30m
2026-07-10 KAP413 - Jul 10, 18:45 UTCJul 10, 19:10 UTC25m
2026-07-10 KAP2141 PVC → BOS Jul 10, 17:45 UTCJul 10, 18:05 UTC20m
2026-07-10 KAP413 - Jul 10, 16:20 UTCJul 10, 16:40 UTC20m
2026-07-10 KAP5301 ACK → BOS Jul 10, 14:40 UTCJul 10, 15:10 UTC30m
2026-07-10 KAP413 - Jul 10, 13:25 UTCJul 10, 13:40 UTC15m
2026-07-09 KAP155 - Jul 9, 21:05 UTCJul 9, 21:15 UTC10m
2026-07-09 KAP155 - Jul 9, 18:35 UTCJul 9, 19:00 UTC25m
2026-07-09 KAP155 - Jul 9, 17:15 UTCJul 9, 17:45 UTC30m
2026-07-09 KAP155 - Jul 9, 11:10 UTCJul 9, 11:20 UTC10m
2026-07-08 KAP916 - Jul 8, 18:10 UTCJul 8, 19:20 UTC1h 10m
2026-07-08 KAP916 - Jul 8, 15:50 UTCJul 8, 17:10 UTC1h 20m
2026-07-08 KAP27 MVY → BOS Jul 8, 14:30 UTCJul 8, 14:45 UTC15m
2026-07-06 KAP5573 - Jul 6, 18:10 UTCJul 6, 18:20 UTC10m
2026-07-06 KAP5573 - Jul 6, 15:50 UTCJul 6, 16:20 UTC30m
2026-07-06 KAP5302 - Jul 6, 14:25 UTCJul 6, 14:55 UTC30m
2026-07-06 KAP5573 - Jul 6, 12:50 UTCJul 6, 13:20 UTC30m
2026-07-06 KAP5002 ACK → BOS Jul 6, 11:40 UTCJul 6, 12:15 UTC35m
2026-07-06 KAP5573 - Jul 6, 09:10 UTCJul 6, 09:25 UTC15m
2026-07-05 KAP78 - Jul 5, 23:35 UTCJul 5, 23:55 UTC20m
2026-07-05 KAP1006 - Jul 5, 19:40 UTCJul 5, 20:30 UTC50m
2026-07-05 KAP925 - Jul 5, 17:25 UTCJul 5, 17:55 UTC30m
2026-07-05 KAP1852 - Jul 5, 15:05 UTCJul 5, 16:10 UTC1h 5m
2026-07-05 KAP925 - Jul 5, 13:05 UTCJul 5, 14:00 UTC55m
2026-07-04 KAP6187 - Jul 4, 22:30 UTCJul 5, 00:25 UTC1h 55m
2026-07-04 KAP6107 - Jul 4, 21:15 UTCJul 4, 21:40 UTC25m
2026-07-04 KAP8380 BOS → PVC Jul 4, 20:05 UTCJul 4, 20:25 UTC20m
2026-07-04 KAP7 - Jul 4, 18:05 UTCJul 4, 18:50 UTC45m
2026-07-04 KAP7 - Jul 4, 14:45 UTCJul 4, 15:35 UTC50m
2026-07-04 KAP452 - Jul 4, 13:15 UTCJul 4, 13:50 UTC35m
2026-07-04 KAP452 - Jul 4, 11:10 UTCJul 4, 11:55 UTC45m
2026-07-03 KAP616 BOS → HYA Jul 3, 23:45 UTCJul 4, 01:50 UTC2h 5m

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 N2611X page for operator, model, and routing details .

Mode-S A28545 frequently asked

What is Mode-S code A28545?
A28545 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2611X.
Where is Mode-S A28545 registered?
Mode-S code A28545 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 A28545 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A28545, octal 50502505, decimal 10,650,949.
What flights does A28545 operate?
Mode-S A28545 has broadcast 20 distinct callsigns, including KAP95, KAP519, KAP154, KAP42, KAP413.