Apparatus

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sensors Mode-S transponder

A26DFB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N256CA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
A26DFB
Octal
50466773
Decimal
10,644,987
Country
US
Tail
N256CA
Type
C402
No current signal · last broadcast 6h ago
Flights observed
275
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A26DFB.

Country allocation

The ICAO 24-bit address A26DFB 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
KAP98 - 28 2026-06-25
KAP548 - 20 2026-07-14
KAP519 - 20 2026-07-18
KAP111 Cape Air 20 2026-06-01
KAP426 - 11 2026-07-12
KAP1271 Cape Air 10 2026-05-28
KAP78 Cape Air 9 2026-06-07
KAP413 Cape Air 9 2026-05-17
KAP402 Cape Air 8 2026-05-19
KAP186 - 8 2026-07-05
KAP3181 Cape Air 7 2026-06-01
KAP3081 Cape Air 7 2026-05-16
KAP811 Cape Air 6 2026-05-06
KAP412 Cape Air 6 2026-06-02
KAP350 - 6 2026-07-09
KAP713 Cape Air 5 2026-07-01
KAP54 - 5 2026-07-13
KAP516 Cape Air 5 2026-05-31
KAP1838 Cape Air 5 2026-06-21
KAP1832 Cape Air 5 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 KAP519 - Jul 18, 01:25 UTCJul 18, 01:54 UTC30m
2026-07-17 KAP519 - Jul 17, 23:30 UTCJul 18, 00:00 UTC30m
2026-07-17 KAP519 - Jul 17, 22:10 UTCJul 17, 22:45 UTC35m
2026-07-17 KAP519 - Jul 17, 20:15 UTCJul 17, 20:35 UTC20m
2026-07-16 KAP925 - Jul 16, 15:45 UTCJul 16, 16:44 UTC1h 0m
2026-07-14 KAP548 - Jul 14, 13:15 UTCJul 14, 13:50 UTC35m
2026-07-14 KAP548 - Jul 14, 11:40 UTCJul 14, 12:05 UTC25m
2026-07-13 KAP54 - Jul 13, 21:20 UTCJul 13, 21:50 UTC30m
2026-07-13 KAP54 - Jul 13, 19:40 UTCJul 13, 20:05 UTC25m
2026-07-13 KAP54 - Jul 13, 17:25 UTCJul 13, 17:50 UTC25m
2026-07-13 KAP1002 - Jul 13, 15:50 UTCJul 13, 16:20 UTC30m
2026-07-13 KAP1001 - Jul 13, 13:10 UTCJul 13, 13:55 UTC45m
2026-07-13 KAP54 - Jul 13, 12:00 UTCJul 13, 12:25 UTC25m
2026-07-12 KAP426 - Jul 12, 21:25 UTCJul 12, 21:50 UTC25m
2026-07-12 KAP95 - Jul 12, 19:35 UTCJul 12, 20:05 UTC30m
2026-07-12 KAP95 - Jul 12, 17:20 UTCJul 12, 17:50 UTC30m
2026-07-12 KAP426 - Jul 12, 15:50 UTCJul 12, 16:20 UTC30m
2026-07-12 KAP426 - Jul 12, 13:15 UTCJul 12, 13:40 UTC25m
2026-07-12 KAP426 - Jul 12, 11:40 UTCJul 12, 12:10 UTC30m
2026-07-11 KAP426 - Jul 11, 19:10 UTCJul 11, 19:25 UTC15m
2026-07-11 KAP426 - Jul 11, 16:25 UTCJul 11, 17:20 UTC55m
2026-07-11 KAP426 - Jul 11, 13:45 UTCJul 11, 14:50 UTC1h 5m
2026-07-10 KAP426 - Jul 10, 23:00 UTCJul 10, 23:55 UTC55m
2026-07-10 KAP426 - Jul 10, 21:10 UTCJul 10, 22:05 UTC55m
2026-07-10 KAP426 - Jul 10, 18:30 UTCJul 10, 19:20 UTC50m
2026-07-10 KAP426 - Jul 10, 16:20 UTCJul 10, 17:30 UTC1h 10m
2026-07-09 KAP350 - Jul 9, 16:20 UTCJul 9, 17:25 UTC1h 5m
2026-07-09 KAP350 - Jul 9, 14:15 UTCJul 9, 15:20 UTC1h 5m
2026-07-08 KAP350 - Jul 8, 23:00 UTCJul 9, 00:00 UTC1h 0m
2026-07-08 KAP350 - Jul 8, 21:05 UTCJul 8, 22:15 UTC1h 10m
2026-07-08 KAP350 - Jul 8, 16:20 UTCJul 8, 17:25 UTC1h 5m
2026-07-08 KAP350 - Jul 8, 14:20 UTCJul 8, 15:25 UTC1h 5m
2026-07-07 KAP1845 - Jul 7, 00:10 UTCJul 7, 01:15 UTC1h 5m
2026-07-06 KAP1840 - Jul 6, 22:25 UTCJul 6, 23:35 UTC1h 10m
2026-07-06 KAP1839 - Jul 6, 16:20 UTCJul 6, 17:20 UTC1h 0m
2026-07-06 KAP1844 - Jul 6, 14:25 UTCJul 6, 15:35 UTC1h 10m
2026-07-05 KAP186 - Jul 5, 22:00 UTCJul 5, 23:05 UTC1h 5m
2026-07-05 KAP186 - Jul 5, 19:55 UTCJul 5, 21:05 UTC1h 10m
2026-07-04 KAP548 - Jul 4, 21:20 UTCJul 4, 22:25 UTC1h 5m
2026-07-04 KAP1834 - Jul 4, 18:35 UTCJul 4, 19:50 UTC1h 15m
2026-07-04 KAP388 - Jul 4, 13:15 UTCJul 4, 14:15 UTC1h 0m
2026-07-04 KAP548 - Jul 4, 11:15 UTCJul 4, 12:20 UTC1h 5m
2026-07-03 KAP548 - Jul 3, 20:55 UTCJul 3, 22:10 UTC1h 15m
2026-07-03 KAP548 - Jul 3, 18:35 UTCJul 3, 20:00 UTC1h 25m
2026-07-03 KAP548 - Jul 3, 13:50 UTCJul 3, 14:50 UTC1h 0m
2026-07-03 KAP548 - Jul 3, 11:00 UTCJul 3, 12:00 UTC1h 0m
2026-07-02 KAP548 - Jul 2, 20:50 UTCJul 2, 21:50 UTC1h 0m
2026-07-02 KAP548 - Jul 2, 18:35 UTCJul 2, 19:35 UTC1h 0m
2026-07-02 KAP548 - Jul 2, 13:15 UTCJul 2, 14:20 UTC1h 5m
2026-07-02 KAP548 - Jul 2, 11:00 UTCJul 2, 12:00 UTC1h 0m

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 N256CA page for operator, model, and routing details .

Mode-S A26DFB frequently asked

What is Mode-S code A26DFB?
A26DFB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N256CA.
Where is Mode-S A26DFB registered?
Mode-S code A26DFB 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 A26DFB broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A26DFB, octal 50466773, decimal 10,644,987.
What flights does A26DFB operate?
Mode-S A26DFB has broadcast 20 distinct callsigns, including KAP98, KAP548, KAP519, KAP111, KAP426.