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sensors Mode-S transponder

A29931

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N267CA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC DBA, CAPE AIR

Hex
A29931
Octal
50514461
Decimal
10,656,049
Country
US
Tail
N267CA
Type
C402
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
207
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S A29931.

Country allocation

The ICAO 24-bit address A29931 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
KAP811 - 16 2026-07-07
KAP412 - 13 2026-06-22
KAP426 - 9 2026-07-03
KAP219 - 9 2026-06-20
KAP916 - 7 2026-07-15
KAP627 Cape Air 7 2026-07-25
KAP106 - 7 2026-07-08
KAP95 - 6 2026-07-11
KAP763 - 6 2026-07-11
KAP394 - 6 2026-06-26
KAP155 - 6 2026-06-25
KAP1271 Cape Air 6 2026-06-08
KAP15 - 5 2026-07-13
KAP110 Cape Air 5 2026-06-03
KAP902 - 4 2026-07-01
KAP818 - 4 2026-07-14
KAP78 Cape Air 4 2026-07-24
KAP519 - 4 2026-06-25
KAP413 - 4 2026-07-12
KAP22 Cape Air 4 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAP5341 ACK → BOS Jul 26, 20:50 UTCJul 26, 21:25 UTC35m
2026-07-26 KAP635 STT → SJU Jul 26, 18:55 UTCJul 26, 19:30 UTC35m
2026-07-26 KAP5121 ACK → BOS Jul 26, 17:45 UTCJul 26, 18:15 UTC30m
2026-07-26 KAP635 STT → SJU Jul 26, 16:30 UTCJul 26, 16:50 UTC20m
2026-07-25 KAP627 SLK → BOS Jul 25, 01:25 UTCJul 25, 01:50 UTC25m
2026-07-24 KAP6109 ACK → BOS Jul 24, 23:55 UTCJul 25, 00:35 UTC40m
2026-07-24 KAP627 SLK → BOS Jul 24, 22:15 UTCJul 24, 22:45 UTC30m
2026-07-24 KAP5201 ACK → BOS Jul 24, 20:15 UTCJul 24, 20:50 UTC35m
2026-07-24 KAP627 SLK → BOS Jul 24, 19:00 UTCJul 24, 19:30 UTC30m
2026-07-24 KAP7001 - Jul 24, 17:55 UTCJul 24, 18:20 UTC25m
2026-07-24 KAP78 BOS → HYA Jul 24, 00:05 UTCJul 24, 01:05 UTC1h 0m
2026-07-23 KAP78 BOS → HYA Jul 23, 22:15 UTCJul 23, 23:30 UTC1h 15m
2026-07-23 KAP5261 ACK → BOS Jul 23, 20:35 UTCJul 23, 21:10 UTC35m
2026-07-23 KAP78 BOS → HYA Jul 23, 17:55 UTCJul 23, 18:25 UTC30m
2026-07-23 KAP78 BOS → HYA Jul 23, 16:35 UTCJul 23, 17:10 UTC35m
2026-07-22 KAPT348 - Jul 22, 14:40 UTCJul 22, 16:15 UTC1h 35m
2026-07-22 KAP348 LEB → HYA Jul 22, 11:50 UTCJul 22, 12:50 UTC1h 0m
2026-07-16 KAP14 - Jul 16, 21:30 UTCJul 16, 22:30 UTC1h 0m
2026-07-15 KAP916 - Jul 15, 15:55 UTCJul 15, 17:25 UTC1h 30m
2026-07-15 KAP916 - Jul 15, 11:20 UTCJul 15, 11:30 UTC10m
2026-07-15 KAP109 - Jul 15, 01:10 UTCJul 15, 01:20 UTC10m
2026-07-15 KAP109 - Jul 15, 00:00 UTCJul 15, 00:30 UTC30m
2026-07-14 KAP109 - Jul 14, 22:35 UTCJul 14, 23:20 UTC44m
2026-07-14 KAP109 - Jul 14, 21:00 UTCJul 14, 21:10 UTC10m
2026-07-14 KAP818 - Jul 14, 18:55 UTCJul 14, 19:45 UTC50m
2026-07-14 KAP818 PVC → BOS Jul 14, 17:50 UTCJul 14, 18:15 UTC25m
2026-07-14 KAP818 BOS → PVC Jul 14, 16:50 UTCJul 14, 17:05 UTC15m
2026-07-14 KAP818 - Jul 14, 15:40 UTCJul 14, 16:05 UTC25m
2026-07-13 KAP15 - Jul 13, 19:00 UTCJul 13, 19:20 UTC20m
2026-07-13 KAP15 PVC → BOS Jul 13, 18:10 UTCJul 13, 18:40 UTC30m
2026-07-12 KAP413 BOS → PVC Jul 12, 21:45 UTCJul 12, 22:00 UTC15m
2026-07-12 KAP2341 PVC → BOS Jul 12, 20:25 UTCJul 12, 20:55 UTC30m
2026-07-12 KAP413 - Jul 12, 18:50 UTCJul 12, 19:10 UTC20m
2026-07-12 KAP2141 PVC → BOS Jul 12, 17:35 UTCJul 12, 18:05 UTC30m
2026-07-12 KAP413 - Jul 12, 15:40 UTCJul 12, 15:55 UTC15m
2026-07-12 KAP2121 PVC → BOS Jul 12, 14:15 UTCJul 12, 14:40 UTC25m
2026-07-12 KAP413 - Jul 12, 13:25 UTCJul 12, 13:40 UTC15m
2026-07-12 KAP2101 - Jul 12, 12:05 UTCJul 12, 12:30 UTC25m
2026-07-11 KAP15 - Jul 11, 23:25 UTCJul 11, 23:45 UTC20m
2026-07-11 KAP15 - Jul 11, 20:55 UTCJul 11, 21:25 UTC30m
2026-07-11 KAP15 PVC → MVY Jul 11, 19:40 UTCJul 11, 20:00 UTC20m
2026-07-11 KAP2031 - Jul 11, 18:10 UTCJul 11, 18:25 UTC15m
2026-07-11 KAP763 - Jul 11, 13:15 UTCJul 11, 13:55 UTC40m
2026-07-11 KAP763 - Jul 11, 11:10 UTCJul 11, 11:50 UTC40m
2026-07-11 KAP95 - Jul 11, 00:00 UTCJul 11, 00:50 UTC50m
2026-07-10 KAP95 - Jul 10, 22:30 UTCJul 10, 23:25 UTC55m
2026-07-10 KAP1856 - Jul 10, 20:55 UTCJul 10, 21:55 UTC1h 0m
2026-07-10 KAP1857 BOS → RKD Jul 10, 18:55 UTCJul 10, 19:45 UTC50m
2026-07-10 KAP763 - Jul 10, 17:05 UTCJul 10, 18:00 UTC55m
2026-07-10 KAP763 - Jul 10, 14:50 UTCJul 10, 15:40 UTC50m

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 N267CA page for operator, model, and routing details .

Mode-S A29931 frequently asked

What is Mode-S code A29931?
A29931 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N267CA.
Where is Mode-S A29931 registered?
Mode-S code A29931 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 A29931 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A29931, octal 50514461, decimal 10,656,049.
What flights does A29931 operate?
Mode-S A29931 has broadcast 20 distinct callsigns, including KAP811, KAP412, KAP426, KAP219, KAP916.