Apparatus

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sensors Mode-S transponder

A61F10

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N494BC · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
A61F10
Octal
51417420
Decimal
10,886,928
Country
US
Tail
N494BC
Type
C402
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
288
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S A61F10.

Country allocation

The ICAO 24-bit address A61F10 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
KAP10 Cape Air 29 2026-06-22
KAP747 - 25 2026-07-23
KAP78 Cape Air 16 2026-07-25
KAP333 Cape Air 11 2026-05-05
KAP394 - 9 2026-06-16
KAP210 - 9 2026-07-05
KAP5573 Cape Air 8 2026-05-20
KAP548 Cape Air 8 2026-05-25
KAP902 Cape Air 7 2026-06-09
KAP627 Cape Air 7 2026-07-24
KAP95 Cape Air 6 2026-07-21
KAP8380 - 6 2026-07-05
KAP763 Cape Air 6 2026-07-17
KAP413 Cape Air 6 2026-06-02
KAP328 Cape Air 6 2026-07-26
KAP217 - 6 2026-06-28
KAP527 Cape Air 5 2026-05-30
KAP212 - 5 2026-07-03
KAP1271 Cape Air 5 2026-07-26
KAP109 - 5 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAP328 BOS → BHB Jul 26, 20:40 UTCJul 26, 21:10 UTC30m
2026-07-26 KAP328 BOS → BHB Jul 26, 19:35 UTCJul 26, 19:45 UTC10m
2026-07-26 KAP328 BOS → BHB Jul 26, 18:25 UTCJul 26, 18:35 UTC10m
2026-07-26 KAP328 BOS → BHB Jul 26, 17:00 UTCJul 26, 17:35 UTC35m
2026-07-26 KAP328 BOS → BHB Jul 26, 15:45 UTCJul 26, 16:15 UTC30m
2026-07-26 KAP328 BOS → BHB Jul 26, 14:45 UTCJul 26, 14:55 UTC10m
2026-07-26 KAP1271 HYA → ACK Jul 26, 02:25 UTCJul 26, 02:35 UTC10m
2026-07-26 KAP1271 HYA → ACK Jul 26, 01:15 UTCJul 26, 01:40 UTC25m
2026-07-25 KAP1271 HYA → ACK Jul 25, 23:50 UTCJul 26, 00:20 UTC30m
2026-07-25 KAP1271 HYA → ACK Jul 25, 22:25 UTCJul 25, 22:50 UTC25m
2026-07-25 KAP1271 HYA → ACK Jul 25, 20:50 UTCJul 25, 21:15 UTC25m
2026-07-25 KAP78 BOS → HYA Jul 25, 01:15 UTCJul 25, 02:15 UTC1h 0m
2026-07-24 KAP78 BOS → HYA Jul 24, 23:55 UTCJul 25, 00:30 UTC35m
2026-07-24 KAP78 BOS → HYA Jul 24, 21:55 UTCJul 24, 22:25 UTC30m
2026-07-24 KAP78 BOS → HYA Jul 24, 20:40 UTCJul 24, 21:05 UTC25m
2026-07-24 KAP78 BOS → HYA Jul 24, 19:00 UTCJul 24, 19:20 UTC20m
2026-07-24 KAP78 BOS → HYA Jul 24, 18:00 UTCJul 24, 18:15 UTC15m
2026-07-24 KAP78 BOS → HYA Jul 24, 17:10 UTCJul 24, 17:20 UTC10m
2026-07-24 KAP627 SLK → BOS Jul 24, 00:05 UTCJul 24, 01:10 UTC1h 5m
2026-07-23 KAP627 SLK → BOS Jul 23, 22:40 UTCJul 23, 23:15 UTC35m
2026-07-23 KAP627 SLK → BOS Jul 23, 19:10 UTCJul 23, 19:40 UTC30m
2026-07-23 KAP747 ORD → MBL Jul 23, 16:45 UTCJul 23, 17:15 UTC30m
2026-07-23 KAP747 ORD → MBL Jul 23, 15:25 UTCJul 23, 15:50 UTC25m
2026-07-23 KAP747 ORD → MBL Jul 23, 14:00 UTCJul 23, 14:30 UTC30m
2026-07-23 KAP747 - Jul 23, 12:35 UTCJul 23, 12:55 UTC20m
2026-07-23 KAP747 - Jul 23, 11:05 UTCJul 23, 11:30 UTC25m
2026-07-23 KAP747 - Jul 23, 10:05 UTCJul 23, 10:15 UTC10m
2026-07-22 KAP747 - Jul 22, 23:10 UTCJul 23, 00:00 UTC50m
2026-07-22 KAP747 - Jul 22, 21:10 UTCJul 22, 21:25 UTC15m
2026-07-22 KAP747 - Jul 22, 19:35 UTCJul 22, 20:05 UTC30m
2026-07-22 KAP747 - Jul 22, 17:00 UTCJul 22, 17:50 UTC50m
2026-07-22 KAP747 - Jul 22, 14:30 UTCJul 22, 15:15 UTC45m
2026-07-22 KAP747 - Jul 22, 12:20 UTCJul 22, 12:55 UTC35m
2026-07-22 KAP747 - Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-21 KAP95 BOS → RKD Jul 21, 18:15 UTCJul 21, 19:25 UTC1h 10m
2026-07-21 KAP95 BOS → RKD Jul 21, 15:35 UTCJul 21, 16:30 UTC55m
2026-07-21 KAP95 BOS → RKD Jul 21, 13:25 UTCJul 21, 14:35 UTC1h 10m
2026-07-21 KAP95 BOS → RKD Jul 21, 11:40 UTCJul 21, 12:40 UTC1h 0m
2026-07-20 KAP1006 - Jul 20, 20:55 UTCJul 20, 21:50 UTC55m
2026-07-20 KAP1003 - Jul 20, 17:40 UTCJul 20, 18:25 UTC45m
2026-07-20 KAP15 - Jul 20, 10:50 UTCJul 20, 12:05 UTC1h 15m
2026-07-19 KAP729 ORD → BRL Jul 19, 14:10 UTCJul 19, 15:10 UTC1h 0m
2026-07-17 KAP216 - Jul 17, 23:55 UTCJul 18, 00:50 UTC55m
2026-07-17 KAP216 - Jul 17, 21:55 UTCJul 17, 22:55 UTC1h 0m
2026-07-17 KAP635 BOS → ISP Jul 17, 16:15 UTCJul 17, 17:15 UTC1h 0m
2026-07-17 KAP763 MVY → BOS Jul 17, 13:55 UTCJul 17, 14:55 UTC1h 0m
2026-07-17 KAP763 MVY → BOS Jul 17, 11:55 UTCJul 17, 12:50 UTC55m
2026-07-16 KAP109 - Jul 16, 22:05 UTCJul 16, 23:10 UTC1h 5m
2026-07-16 KAP109 - Jul 16, 18:40 UTCJul 16, 19:35 UTC55m
2026-07-16 KAP109 - Jul 16, 16:30 UTCJul 16, 17:40 UTC1h 10m

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 N494BC page for operator, model, and routing details .

Mode-S A61F10 frequently asked

What is Mode-S code A61F10?
A61F10 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N494BC.
Where is Mode-S A61F10 registered?
Mode-S code A61F10 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 A61F10 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A61F10, octal 51417420, decimal 10,886,928.
What flights does A61F10 operate?
Mode-S A61F10 has broadcast 20 distinct callsigns, including KAP10, KAP747, KAP78, KAP333, KAP394.