Apparatus

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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 Jul 26, 21:15 UTC
Flights observed
411
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

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
KAP155 Cape Air 17 2026-07-24
KAP154 Cape Air 17 2026-06-10
KAP42 Cape Air 16 2026-04-23
KAP747 - 15 2026-07-21
KAP902 - 14 2026-07-14
KAP78 Cape Air 14 2026-07-26
KAP413 - 14 2026-07-12
KAP811 - 13 2026-06-30
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
KAP296 Cape Air 9 2026-07-25
KAP109 Cape Air 9 2026-07-23
KAP876 Cape Air 8 2026-06-22
KAP916 Cape Air 7 2026-07-25
KAP5573 - 7 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAP3171 BOS → MVY Jul 26, 20:45 UTCJul 26, 21:15 UTC30m
2026-07-26 KAP8380 PVD → ISP Jul 26, 19:15 UTCJul 26, 19:45 UTC30m
2026-07-26 KAP8380 PVD → ISP Jul 26, 17:20 UTCJul 26, 17:50 UTC30m
2026-07-26 KAP78 BOS → HYA Jul 26, 16:10 UTCJul 26, 16:40 UTC30m
2026-07-25 KAP296 BOS → HYA Jul 25, 17:30 UTCJul 25, 17:40 UTC10m
2026-07-25 KAP296 BOS → HYA Jul 25, 16:20 UTCJul 25, 16:50 UTC30m
2026-07-25 KAP3001 MVY → BOS Jul 25, 15:00 UTCJul 25, 15:25 UTC25m
2026-07-25 KAP296 BOS → HYA Jul 25, 13:35 UTCJul 25, 14:05 UTC30m
2026-07-25 KAP3101 MVY → BOS Jul 25, 11:55 UTCJul 25, 12:35 UTC40m
2026-07-25 KAP296 BOS → HYA Jul 25, 11:10 UTCJul 25, 11:20 UTC10m
2026-07-25 KAP296 BOS → HYA Jul 25, 09:50 UTCJul 25, 10:00 UTC10m
2026-07-25 KAP916 AUG → BOS Jul 25, 01:05 UTCJul 25, 01:25 UTC20m
2026-07-24 KAP155 BOS → BHB Jul 24, 22:15 UTCJul 24, 23:10 UTC55m
2026-07-24 KAP155 BOS → BHB Jul 24, 20:20 UTCJul 24, 20:45 UTC25m
2026-07-24 KAP155 BOS → BHB Jul 24, 18:05 UTCJul 24, 18:35 UTC30m
2026-07-24 KAP155 BOS → BHB Jul 24, 16:45 UTCJul 24, 17:10 UTC25m
2026-07-24 KAP155 BOS → BHB Jul 24, 15:10 UTCJul 24, 15:40 UTC30m
2026-07-24 KAP155 BOS → BHB Jul 24, 13:55 UTCJul 24, 14:20 UTC25m
2026-07-23 KAP155 BOS → BHB Jul 23, 18:40 UTCJul 23, 19:10 UTC30m
2026-07-23 KAP155 BOS → BHB Jul 23, 17:20 UTCJul 23, 17:50 UTC30m
2026-07-23 KAP155 BOS → BHB Jul 23, 16:05 UTCJul 23, 16:20 UTC15m
2026-07-23 KAP155 BOS → BHB Jul 23, 15:10 UTCJul 23, 15:25 UTC15m
2026-07-23 KAP155 BOS → BHB Jul 23, 13:15 UTCJul 23, 13:40 UTC25m
2026-07-23 KAP155 BOS → BHB Jul 23, 12:10 UTCJul 23, 12:35 UTC25m
2026-07-23 KAP155 BOS → BHB Jul 23, 11:05 UTCJul 23, 11:15 UTC10m
2026-07-23 KAP109 BOS → ACK Jul 23, 00:15 UTCJul 23, 00:30 UTC15m
2026-07-22 KAP109 BOS → ACK Jul 22, 22:40 UTCJul 22, 23:15 UTC35m
2026-07-22 KAP109 BOS → ACK Jul 22, 21:15 UTCJul 22, 21:45 UTC30m
2026-07-22 KAP109 BOS → ACK Jul 22, 15:55 UTCJul 22, 16:10 UTC15m
2026-07-21 KAP1271 HYA → ACK Jul 21, 22:45 UTCJul 21, 23:05 UTC20m
2026-07-21 KAP1271 HYA → ACK Jul 21, 19:50 UTCJul 21, 20:00 UTC10m
2026-07-21 KAP916 - Jul 21, 16:45 UTCJul 21, 17:30 UTC45m
2026-07-21 KAP916 - Jul 21, 15:30 UTCJul 21, 15:50 UTC20m
2026-07-21 KAP916 BOS → PVC Jul 21, 14:05 UTCJul 21, 14:25 UTC20m
2026-07-21 KAP916 - Jul 21, 12:20 UTCJul 21, 13:25 UTC1h 5m
2026-07-21 KAP747 - Jul 21, 00:15 UTCJul 21, 00:25 UTC10m
2026-07-20 KAP747 - Jul 20, 22:45 UTCJul 20, 23:10 UTC25m
2026-07-20 KAP747 - Jul 20, 21:40 UTCJul 20, 22:05 UTC25m
2026-07-20 KAP747 - Jul 20, 20:40 UTCJul 20, 20:50 UTC10m
2026-07-20 KAP747 - Jul 20, 17:50 UTCJul 20, 18:15 UTC25m
2026-07-20 KAP747 - Jul 20, 16:45 UTCJul 20, 17:10 UTC25m
2026-07-20 KAP747 - Jul 20, 15:50 UTCJul 20, 16:00 UTC10m
2026-07-19 KAP516 BOS → AUG Jul 19, 21:35 UTCJul 19, 22:20 UTC45m
2026-07-19 KAP516 BOS → AUG Jul 19, 19:25 UTCJul 19, 20:45 UTC1h 20m
2026-07-19 KAP516 BOS → AUG Jul 19, 16:55 UTCJul 19, 18:00 UTC1h 5m
2026-07-19 KAP516 BOS → AUG Jul 19, 02:25 UTCJul 19, 02:40 UTC15m
2026-07-19 KAP516 BOS → AUG Jul 19, 00:20 UTCJul 19, 00:55 UTC35m
2026-07-18 KAP5221 ACK → BOS Jul 18, 22:35 UTCJul 18, 23:10 UTC35m
2026-07-18 KAP516 BOS → AUG Jul 18, 19:50 UTCJul 18, 20:30 UTC40m
2026-07-18 KAP7061 - Jul 18, 15:50 UTCJul 18, 16:25 UTC35m

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 Jul 26, 21:15 UTC.
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, KAP155, KAP154, KAP42.