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 Jul 26, 17:10 UTC
Flights observed
308
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 17:10 UTC

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 Cape Air 19 2026-07-26
KAP501 Cape Air 17 2026-07-26
KAP164 - 12 2026-07-03
KAP14 Cape Air 12 2026-05-18
KAP60 - 11 2026-07-03
KAP5483 - 10 2026-04-18
KAP2112 Cape Air 10 2026-07-23
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
KAP241 Cape Air 7 2026-06-12
KAP1874 - 7 2026-07-23
KAP1006 Cape Air 7 2026-05-10
KAP54 - 6 2026-06-27
KAP325 - 6 2026-07-16
KAP5050 Cape Air 5 2026-06-10
KAP240 - 5 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAP501 LEB → HPN Jul 26, 16:10 UTCJul 26, 17:10 UTC1h 0m
2026-07-26 KAP1333 BOS → BHB Jul 26, 13:25 UTCJul 26, 14:40 UTC1h 15m
2026-07-26 KAP1333 BOS → BHB Jul 26, 11:35 UTCJul 26, 12:45 UTC1h 10m
2026-07-23 KAP2112 LEB → BOS Jul 23, 22:10 UTCJul 23, 22:55 UTC45m
2026-07-23 KAP1880 LEB → BOS Jul 23, 20:15 UTCJul 23, 21:05 UTC50m
2026-07-23 KAP2112 LEB → BOS Jul 23, 18:15 UTCJul 23, 19:00 UTC45m
2026-07-23 KAP1874 LEB → BOS Jul 23, 15:15 UTCJul 23, 16:05 UTC50m
2026-07-23 KAP2112 LEB → BOS Jul 23, 13:20 UTCJul 23, 14:05 UTC45m
2026-07-23 KAP2112 LEB → BOS Jul 23, 11:15 UTCJul 23, 12:00 UTC45m
2026-07-22 KAP2112 LEB → BOS Jul 22, 18:35 UTCJul 22, 19:20 UTC45m
2026-07-22 KAP1874 LEB → BOS Jul 22, 16:00 UTCJul 22, 16:50 UTC50m
2026-07-22 KAP2112 LEB → BOS Jul 22, 12:45 UTCJul 22, 13:25 UTC40m
2026-07-22 KAP2112 LEB → BOS Jul 22, 11:25 UTCJul 22, 12:00 UTC35m
2026-07-21 KAP2112 LEB → BOS Jul 21, 18:15 UTCJul 21, 19:05 UTC50m
2026-07-21 KAP1874 LEB → BOS Jul 21, 15:15 UTCJul 21, 16:00 UTC45m
2026-07-21 KAP2112 LEB → BOS Jul 21, 13:15 UTCJul 21, 13:55 UTC40m
2026-07-21 KAP2112 LEB → BOS Jul 21, 11:20 UTCJul 21, 12:05 UTC45m
2026-07-20 KAP1333 BOS → LEB Jul 20, 22:05 UTCJul 20, 22:45 UTC40m
2026-07-20 KAP1880 LEB → BOS Jul 20, 20:00 UTCJul 20, 20:45 UTC45m
2026-07-20 KAP1333 BOS → LEB Jul 20, 18:20 UTCJul 20, 19:00 UTC40m
2026-07-20 KAP1874 LEB → BOS Jul 20, 15:10 UTCJul 20, 15:50 UTC40m
2026-07-20 KAP1333 BOS → LEB Jul 20, 13:10 UTCJul 20, 13:55 UTC45m
2026-07-20 KAP1870 LEB → BOS Jul 20, 11:20 UTCJul 20, 11:55 UTC35m
2026-07-19 KAP501 - Jul 19, 21:25 UTCJul 19, 22:15 UTC50m
2026-07-19 KAP1880 LEB → BOS Jul 19, 19:50 UTCJul 19, 20:35 UTC45m
2026-07-19 KAP501 - Jul 19, 18:00 UTCJul 19, 18:50 UTC50m
2026-07-19 KAP1874 - Jul 19, 15:30 UTCJul 19, 16:15 UTC45m
2026-07-19 KAP501 - Jul 19, 14:05 UTCJul 19, 14:55 UTC50m
2026-07-19 KAP1870 LEB → BOS Jul 19, 12:45 UTCJul 19, 13:25 UTC40m
2026-07-18 KAP501 BOS → LEB Jul 18, 17:35 UTCJul 18, 18:20 UTC45m
2026-07-18 KAP1874 LEB → BOS Jul 18, 15:10 UTCJul 18, 15:55 UTC45m
2026-07-18 KAP501 BOS → LEB Jul 18, 13:00 UTCJul 18, 13:40 UTC40m
2026-07-18 KAP1870 LEB → BOS Jul 18, 11:20 UTCJul 18, 12:05 UTC45m
2026-07-17 KAP501 - Jul 17, 21:50 UTCJul 17, 22:35 UTC45m
2026-07-17 KAP1880 LEB → BOS Jul 17, 19:55 UTCJul 17, 20:44 UTC50m
2026-07-17 KAP501 BOS → LEB Jul 17, 18:05 UTCJul 17, 18:50 UTC45m
2026-07-17 KAP1874 LEB → BOS Jul 17, 15:05 UTCJul 17, 15:49 UTC45m
2026-07-17 KAP501 - Jul 17, 12:55 UTCJul 17, 13:45 UTC50m
2026-07-17 KAP1870 LEB → BOS Jul 17, 11:20 UTCJul 17, 12:04 UTC45m
2026-07-16 KAP325 - Jul 16, 13:10 UTCJul 16, 14:20 UTC1h 10m
2026-07-16 KAP325 LEB → HPN Jul 16, 11:20 UTCJul 16, 12:30 UTC1h 10m
2026-07-15 KAP325 - Jul 15, 21:05 UTCJul 15, 22:20 UTC1h 15m
2026-07-15 KAP325 LEB → HPN Jul 15, 19:05 UTCJul 15, 20:20 UTC1h 15m
2026-07-15 KAP325 - Jul 15, 13:15 UTCJul 15, 14:25 UTC1h 10m
2026-07-15 KAP325 LEB → HPN Jul 15, 11:30 UTCJul 15, 12:40 UTC1h 10m
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

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 Jul 26, 17:10 UTC.
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, KAP501, KAP164.