Apparatus

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sensors Mode-S transponder

A1ED6D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N223PB · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
A1ED6D
Octal
50366555
Decimal
10,612,077
Country
US
Tail
N223PB
Type
C402
No current signal · last broadcast Jul 23, 20:30 UTC
Flights observed
277
Distinct callsigns
20
Country
US
Last broadcast
Jul 23, 20:30 UTC

Last known position

Most recent position reported by Mode-S A1ED6D.

Country allocation

The ICAO 24-bit address A1ED6D 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
KAP1903 - 50 2026-06-12
KAP65 - 28 2026-07-19
KAP161 Cape Air 24 2026-06-11
KAP333 Cape Air 19 2026-07-21
KAP635 Cape Air 17 2026-05-23
KAP11 - 15 2026-07-09
KAP514 Cape Air 12 2026-07-23
KAP27 Cape Air 12 2026-05-04
KAP47 - 11 2026-06-18
KAP713 Cape Air 10 2026-05-07
KAP278 Cape Air 9 2026-05-26
KAP2 Cape Air 8 2026-05-09
KAP13 Cape Air 8 2026-05-21
KAP627 Cape Air 7 2026-05-23
KAP48 Cape Air 6 2026-05-02
KAP211 Cape Air 6 2026-07-19
KAP63 Cape Air 5 2026-07-18
KAP592 Cape Air 4 2026-06-04
KAP6 Cape Air 3 2026-05-24
KAP202 Cape Air 3 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 KAP514 SJU → MAZ Jul 23, 20:15 UTCJul 23, 20:30 UTC15m
2026-07-23 KAP514 SJU → MAZ Jul 23, 19:00 UTCJul 23, 19:20 UTC20m
2026-07-23 KAP514 SJU → MAZ Jul 23, 16:45 UTCJul 23, 16:55 UTC10m
2026-07-23 KAP514 SJU → MAZ Jul 23, 15:20 UTCJul 23, 15:30 UTC10m
2026-07-23 KAP514 SJU → MAZ Jul 23, 11:30 UTCJul 23, 11:40 UTC10m
2026-07-22 KAP514 SJU → MAZ Jul 22, 21:10 UTCJul 22, 21:30 UTC20m
2026-07-22 KAP514 SJU → MAZ Jul 22, 20:05 UTCJul 22, 20:15 UTC10m
2026-07-22 KAP514 SJU → MAZ Jul 22, 18:20 UTCJul 22, 18:40 UTC20m
2026-07-22 KAP514 SJU → MAZ Jul 22, 16:50 UTCJul 22, 17:05 UTC15m
2026-07-22 KAP514 SJU → MAZ Jul 22, 15:25 UTCJul 22, 15:45 UTC20m
2026-07-22 KAP514 SJU → MAZ Jul 22, 14:00 UTCJul 22, 14:15 UTC15m
2026-07-21 KAP333 ACK → BOS Jul 21, 22:35 UTCJul 21, 22:55 UTC20m
2026-07-21 KAP333 ACK → BOS Jul 21, 20:35 UTCJul 21, 20:55 UTC20m
2026-07-21 KAP333 ACK → BOS Jul 21, 19:45 UTCJul 21, 20:00 UTC15m
2026-07-21 KAP333 ACK → BOS Jul 21, 15:05 UTCJul 21, 15:25 UTC20m
2026-07-21 KAP202 VQS → SJU Jul 21, 14:00 UTCJul 21, 14:15 UTC15m
2026-07-21 KAP202 VQS → SJU Jul 21, 12:00 UTCJul 21, 12:15 UTC15m
2026-07-20 KAP80 - Jul 20, 20:45 UTCJul 20, 20:55 UTC10m
2026-07-19 KAP211 BOS → ISP Jul 19, 21:15 UTCJul 19, 22:05 UTC50m
2026-07-19 KAP211 BOS → ISP Jul 19, 19:05 UTCJul 19, 19:55 UTC50m
2026-07-19 KAP211 BOS → ISP Jul 19, 18:05 UTCJul 19, 18:15 UTC10m
2026-07-19 KAP211 BOS → ISP Jul 19, 17:15 UTCJul 19, 17:25 UTC10m
2026-07-19 KAP65 - Jul 19, 15:35 UTCJul 19, 15:45 UTC10m
2026-07-19 KAP65 - Jul 19, 14:50 UTCJul 19, 15:00 UTC10m
2026-07-19 KAP65 - Jul 19, 14:00 UTCJul 19, 14:15 UTC15m
2026-07-19 KAP65 - Jul 19, 11:25 UTCJul 19, 11:45 UTC20m
2026-07-18 KAP63 BOS → RUT Jul 18, 21:45 UTCJul 18, 22:00 UTC15m
2026-07-18 KAP63 BOS → RUT Jul 18, 19:25 UTCJul 18, 19:45 UTC20m
2026-07-18 KAP63 BOS → RUT Jul 18, 16:50 UTCJul 18, 17:05 UTC15m
2026-07-18 KAP63 BOS → RUT Jul 18, 15:40 UTCJul 18, 16:00 UTC20m
2026-07-17 KAP2296 - Jul 17, 17:30 UTCJul 17, 17:50 UTC20m
2026-07-17 KAP514 SJU → MAZ Jul 17, 11:55 UTCJul 17, 12:04 UTC10m
2026-07-15 KAP333 - Jul 15, 14:05 UTCJul 15, 14:20 UTC15m
2026-07-15 KAP333 - Jul 15, 11:25 UTCJul 15, 11:40 UTC15m
2026-07-13 KAP333 - Jul 13, 22:10 UTCJul 13, 22:25 UTC15m
2026-07-13 KAP333 - Jul 13, 17:00 UTCJul 13, 17:40 UTC40m
2026-07-13 KAP333 - Jul 13, 15:00 UTCJul 13, 15:50 UTC50m
2026-07-13 KAP333 - Jul 13, 13:45 UTCJul 13, 14:05 UTC20m
2026-07-13 KAP333 - Jul 13, 11:30 UTCJul 13, 11:45 UTC15m
2026-07-11 KAP65 - Jul 11, 21:35 UTCJul 11, 21:55 UTC20m
2026-07-11 KAP65 - Jul 11, 19:25 UTCJul 11, 19:45 UTC20m
2026-07-11 KAP65 - Jul 11, 16:55 UTCJul 11, 17:35 UTC40m
2026-07-11 KAP65 - Jul 11, 14:55 UTCJul 11, 15:40 UTC45m
2026-07-11 KAP65 - Jul 11, 14:00 UTCJul 11, 14:15 UTC15m
2026-07-11 KAP65 - Jul 11, 11:25 UTCJul 11, 11:45 UTC20m
2026-07-10 KAP65 - Jul 10, 22:00 UTCJul 10, 22:15 UTC15m
2026-07-10 KAP65 - Jul 10, 19:35 UTCJul 10, 19:50 UTC15m
2026-07-10 KAP65 - Jul 10, 14:55 UTCJul 10, 15:50 UTC55m
2026-07-09 KAP11 - Jul 9, 20:35 UTCJul 9, 21:05 UTC30m
2026-07-09 KAP11 - Jul 9, 15:55 UTCJul 9, 16:15 UTC20m

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 N223PB page for operator, model, and routing details .

Mode-S A1ED6D frequently asked

What is Mode-S code A1ED6D?
A1ED6D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N223PB.
Where is Mode-S A1ED6D registered?
Mode-S code A1ED6D 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 A1ED6D broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 20:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1ED6D, octal 50366555, decimal 10,612,077.
What flights does A1ED6D operate?
Mode-S A1ED6D has broadcast 20 distinct callsigns, including KAP1903, KAP65, KAP161, KAP333, KAP635.