Apparatus

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sensors Mode-S transponder

A9AB2D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N722CA · TECNAM P-2012 Traveller · operated by HYANNIS AIR SERVICE INC

Hex
A9AB2D
Octal
52325455
Decimal
11,119,405
Country
US
Tail
N722CA
Type
P212
No current signal · last broadcast 20h ago
Flights observed
263
Distinct callsigns
20
Country
US
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S A9AB2D.

Country allocation

The ICAO 24-bit address A9AB2D 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
KAP922 - 25 2026-06-25
KAP480 Cape Air 22 2026-06-22
KAP1333 - 14 2026-07-13
KAP164 - 12 2026-07-03
KAP14 Cape Air 12 2026-05-18
KAP60 - 11 2026-07-03
KAP5483 - 10 2026-04-18
KAP777 Cape Air 9 2026-06-01
KAP52 - 9 2026-07-07
KAP758 Cape Air 8 2026-06-10
KAP70 Cape Air 8 2026-06-22
KAP501 - 8 2026-07-12
KAP241 Cape Air 7 2026-06-12
KAP1006 Cape Air 7 2026-05-10
KAP54 - 6 2026-06-27
KAP5050 Cape Air 5 2026-06-10
KAP240 - 5 2026-04-16
KAP626 - 4 2026-07-07
KAP418 Cape Air 4 2026-05-28
KAP235 Cape Air 4 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KAP1333 BOS → LEB Jul 13, 13:05 UTCJul 13, 13:50 UTC45m
2026-07-13 KAP1870 LEB → BOS Jul 13, 11:20 UTCJul 13, 12:00 UTC40m
2026-07-12 KAP501 - Jul 12, 17:25 UTCJul 12, 18:05 UTC40m
2026-07-12 KAP1844 - Jul 12, 15:35 UTCJul 12, 16:45 UTC1h 10m
2026-07-12 KAP501 - Jul 12, 13:55 UTCJul 12, 15:01 UTC1h 5m
2026-07-09 KAP501 BOS → LEB Jul 9, 21:20 UTCJul 9, 22:05 UTC45m
2026-07-07 KAP52 - Jul 7, 11:15 UTCJul 7, 12:15 UTC1h 0m
2026-07-07 KAP626 - Jul 7, 01:45 UTCJul 7, 03:05 UTC1h 20m
2026-07-06 KAP501 - Jul 6, 21:40 UTCJul 6, 22:20 UTC40m
2026-07-06 KAP5201 - Jul 6, 20:20 UTCJul 6, 20:55 UTC35m
2026-07-06 KAP501 - Jul 6, 18:55 UTCJul 6, 19:05 UTC10m
2026-07-06 KAP501 - Jul 6, 16:55 UTCJul 6, 17:20 UTC25m
2026-07-06 KAP5021 - Jul 6, 14:45 UTCJul 6, 15:20 UTC35m
2026-07-06 KAP501 - Jul 6, 12:45 UTCJul 6, 13:25 UTC40m
2026-07-06 KAP52 - Jul 6, 11:20 UTCJul 6, 12:10 UTC50m
2026-07-05 KAP626 - Jul 5, 21:45 UTCJul 5, 22:25 UTC40m
2026-07-05 KAP5201 - Jul 5, 20:25 UTCJul 5, 21:00 UTC35m
2026-07-05 KAP626 - Jul 5, 17:15 UTCJul 5, 17:40 UTC25m
2026-07-05 KAP5021 - Jul 5, 15:50 UTCJul 5, 16:20 UTC30m
2026-07-05 KAP626 - Jul 5, 14:10 UTCJul 5, 14:45 UTC35m
2026-07-05 KAP1026 - Jul 5, 11:40 UTCJul 5, 12:55 UTC1h 15m
2026-07-04 KAP68 - Jul 4, 17:55 UTCJul 4, 20:00 UTC2h 5m
2026-07-04 KAP68 - Jul 4, 15:00 UTCJul 4, 16:25 UTC1h 25m
2026-07-04 KAP1333 - Jul 4, 12:45 UTCJul 4, 13:35 UTC50m
2026-07-03 KAP86 SLK → JFK Jul 3, 21:45 UTCJul 3, 22:35 UTC50m
2026-07-03 KAP1880 LEB → BOS Jul 3, 19:50 UTCJul 3, 20:35 UTC45m
2026-07-03 KAP86 SLK → JFK Jul 3, 18:10 UTCJul 3, 18:55 UTC45m
2026-07-03 KAP60 - Jul 3, 16:30 UTCJul 3, 17:20 UTC50m
2026-07-03 KAP164 - Jul 3, 12:55 UTCJul 3, 13:45 UTC50m
2026-07-03 KAP52 RUT → BOS Jul 3, 11:15 UTCJul 3, 12:00 UTC45m
2026-07-02 KAP63 - Jul 2, 22:15 UTCJul 2, 23:00 UTC45m
2026-07-02 KAP7141 - Jul 2, 20:25 UTCJul 2, 20:45 UTC20m
2026-07-02 KAP5171 BOS → ACK Jul 2, 16:30 UTCJul 2, 17:05 UTC35m
2026-07-02 KAP5021 - Jul 2, 14:50 UTCJul 2, 15:30 UTC40m
2026-07-02 KAP5411 - Jul 2, 13:15 UTCJul 2, 13:50 UTC35m
2026-07-02 KAP52 RUT → BOS Jul 2, 11:40 UTCJul 2, 12:20 UTC40m
2026-07-01 KAP63 - Jul 1, 23:00 UTCJul 1, 23:45 UTC45m
2026-07-01 KAP7141 - Jul 1, 21:20 UTCJul 1, 21:45 UTC25m
2026-07-01 KAPT91 - Jul 1, 19:15 UTCJul 1, 20:05 UTC50m
2026-06-27 KAP155 - Jun 27, 20:59 UTCJun 27, 22:09 UTC1h 10m
2026-06-27 KAP155 BOS → LEB Jun 27, 17:59 UTCJun 27, 18:45 UTC45m
2026-06-27 KAP54 - Jun 27, 13:00 UTCJun 27, 13:49 UTC50m
2026-06-26 KAP54 - Jun 26, 23:55 UTCJun 27, 00:39 UTC45m
2026-06-26 KAP5221 ACK → BOS Jun 26, 21:50 UTCJun 26, 22:40 UTC50m
2026-06-26 KAP54 - Jun 26, 20:24 UTCJun 26, 20:59 UTC35m
2026-06-26 KAP54 - Jun 26, 19:00 UTCJun 26, 19:35 UTC35m
2026-06-26 KAP5221 ACK → BOS Jun 26, 16:35 UTCJun 26, 16:49 UTC15m
2026-06-26 KAP54 - Jun 26, 15:15 UTCJun 26, 15:49 UTC35m
2026-06-26 KAP54 - Jun 26, 13:34 UTCJun 26, 14:15 UTC40m
2026-06-25 KAP922 - Jun 25, 21:05 UTCJun 25, 21:29 UTC25m

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 N722CA page for operator, model, and routing details .

Mode-S A9AB2D frequently asked

What is Mode-S code A9AB2D?
A9AB2D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N722CA.
Where is Mode-S A9AB2D registered?
Mode-S code A9AB2D 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 A9AB2D broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9AB2D, octal 52325455, decimal 11,119,405.
What flights does A9AB2D operate?
Mode-S A9AB2D has broadcast 20 distinct callsigns, including KAP922, KAP480, KAP1333, KAP164, KAP14.