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sensors Mode-S transponder

A2F5AD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N290CA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
A2F5AD
Octal
50572655
Decimal
10,679,725
Country
US
Tail
N290CA
Type
C402
No current signal · last broadcast Jul 25, 21:45 UTC
Flights observed
374
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 21:45 UTC

Last known position

Most recent position reported by Mode-S A2F5AD.

Country allocation

The ICAO 24-bit address A2F5AD 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
KAP111 - 34 2026-07-16
KAP15 - 23 2026-04-17
KAP811 - 16 2026-06-25
KAP548 - 16 2026-07-04
KAP54 - 16 2026-07-03
KAP1271 Cape Air 14 2026-07-21
KAP713 Cape Air 13 2026-06-19
KAP328 - 11 2026-07-05
KAP314 - 11 2026-07-25
KAP296 - 10 2026-07-11
KAP115 Cape Air 10 2026-05-12
KAP763 - 9 2026-07-04
KAP27 Cape Air 9 2026-07-22
KAP87 Cape Air 6 2026-07-18
KAP42 - 6 2026-07-07
KAP419 - 6 2026-07-19
KAP350 Cape Air 6 2026-06-16
KAP6789 Cape Air 5 2026-06-25
KAP413 Cape Air 5 2026-06-01
KAP3261 Cape Air 5 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 KAP501 LEB → HPN Jul 25, 19:10 UTCJul 25, 21:45 UTC2h 35m
2026-07-25 KAP314 - Jul 25, 13:40 UTCJul 25, 14:40 UTC1h 0m
2026-07-25 KAP314 - Jul 25, 11:45 UTCJul 25, 12:50 UTC1h 5m
2026-07-24 KAP314 - Jul 24, 16:50 UTCJul 24, 17:45 UTC55m
2026-07-23 KAPT978 - Jul 23, 10:50 UTCJul 23, 12:30 UTC1h 40m
2026-07-22 KAP27 MVY → BOS Jul 22, 21:50 UTCJul 22, 22:05 UTC15m
2026-07-22 KAP27 MVY → BOS Jul 22, 18:15 UTCJul 22, 19:55 UTC1h 40m
2026-07-22 KAP27 MVY → BOS Jul 22, 16:25 UTCJul 22, 17:30 UTC1h 5m
2026-07-22 KAP27 MVY → BOS Jul 22, 15:35 UTCJul 22, 15:50 UTC15m
2026-07-22 KAP27 MVY → BOS Jul 22, 11:20 UTCJul 22, 11:30 UTC10m
2026-07-21 KAP818 - Jul 21, 12:45 UTCJul 21, 13:20 UTC35m
2026-07-21 KAP818 - Jul 21, 11:25 UTCJul 21, 11:55 UTC30m
2026-07-21 KAP818 - Jul 21, 10:15 UTCJul 21, 10:30 UTC15m
2026-07-21 KAP1271 HYA → ACK Jul 21, 01:20 UTCJul 21, 02:25 UTC1h 5m
2026-07-21 KAP5621 ACK → BOS Jul 21, 00:00 UTCJul 21, 00:40 UTC40m
2026-07-20 KAP1271 HYA → ACK Jul 20, 22:20 UTCJul 20, 22:50 UTC30m
2026-07-20 KAP5061 - Jul 20, 20:50 UTCJul 20, 21:30 UTC40m
2026-07-20 KAP1271 HYA → ACK Jul 20, 19:45 UTCJul 20, 19:55 UTC10m
2026-07-20 KAP3261 MVY → BOS Jul 20, 17:45 UTCJul 20, 18:05 UTC20m
2026-07-20 KAP3261 MVY → BOS Jul 20, 15:45 UTCJul 20, 17:00 UTC1h 15m
2026-07-20 KAP3261 MVY → BOS Jul 20, 13:55 UTCJul 20, 14:30 UTC35m
2026-07-20 KAP27 MVY → BOS Jul 20, 12:30 UTCJul 20, 12:55 UTC25m
2026-07-20 KAP27 MVY → BOS Jul 20, 11:00 UTCJul 20, 11:35 UTC35m
2026-07-20 KAP27 MVY → BOS Jul 20, 10:10 UTCJul 20, 10:20 UTC10m
2026-07-19 KAP419 - Jul 19, 17:55 UTCJul 19, 19:15 UTC1h 20m
2026-07-19 KAP419 - Jul 19, 16:30 UTCJul 19, 16:55 UTC25m
2026-07-19 KAP419 - Jul 19, 15:10 UTCJul 19, 15:45 UTC35m
2026-07-19 KAP419 - Jul 19, 13:55 UTCJul 19, 14:20 UTC25m
2026-07-19 KAP419 - Jul 19, 12:35 UTCJul 19, 13:10 UTC35m
2026-07-19 KAP419 - Jul 19, 11:45 UTCJul 19, 12:00 UTC15m
2026-07-18 KAP87 STT → STX Jul 18, 21:10 UTCJul 18, 21:40 UTC30m
2026-07-18 KAP1876 LEB → BOS Jul 18, 19:20 UTCJul 18, 20:15 UTC55m
2026-07-18 KAP87 STT → STX Jul 18, 17:00 UTCJul 18, 17:45 UTC45m
2026-07-18 KAP7101 - Jul 18, 15:15 UTCJul 18, 15:45 UTC30m
2026-07-18 KA87 - Jul 18, 12:40 UTCJul 18, 13:05 UTC25m
2026-07-18 KA7041 - Jul 18, 11:10 UTCJul 18, 11:35 UTC25m
2026-07-17 KAP87 STT → STX Jul 17, 23:45 UTCJul 18, 00:10 UTC25m
2026-07-17 KAP1856 - Jul 17, 21:39 UTCJul 17, 22:35 UTC55m
2026-07-17 KAP1857 BOS → RKD Jul 17, 19:15 UTCJul 17, 20:10 UTC55m
2026-07-17 KAP1854 RKD → BOS Jul 17, 16:59 UTCJul 17, 18:00 UTC1h 0m
2026-07-17 KAP925 BOS → RKD Jul 17, 14:44 UTCJul 17, 15:40 UTC55m
2026-07-17 KAP1008 - Jul 17, 13:05 UTCJul 17, 13:55 UTC50m
2026-07-16 KAP111 - Jul 16, 23:40 UTCJul 17, 00:25 UTC45m
2026-07-16 KAP111 - Jul 16, 22:19 UTCJul 16, 22:49 UTC30m
2026-07-16 KAP111 - Jul 16, 19:40 UTCJul 16, 20:15 UTC35m
2026-07-16 KAP111 - Jul 16, 18:19 UTCJul 16, 18:44 UTC25m
2026-07-16 KAP111 - Jul 16, 16:09 UTCJul 16, 16:19 UTC10m
2026-07-16 KAP111 - Jul 16, 14:55 UTCJul 16, 15:30 UTC35m
2026-07-16 KAP111 - Jul 16, 13:05 UTCJul 16, 14:05 UTC1h 0m
2026-07-15 KAP111 - Jul 15, 23:05 UTCJul 15, 23:35 UTC30m

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 N290CA page for operator, model, and routing details .

Mode-S A2F5AD frequently asked

What is Mode-S code A2F5AD?
A2F5AD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N290CA.
Where is Mode-S A2F5AD registered?
Mode-S code A2F5AD 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 A2F5AD broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2F5AD, octal 50572655, decimal 10,679,725.
What flights does A2F5AD operate?
Mode-S A2F5AD has broadcast 20 distinct callsigns, including KAP111, KAP15, KAP811, KAP548, KAP54.