Apparatus

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sensors Mode-S transponder

AD1FEE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N945CA · TECNAM P-2012 Traveller · operated by HYANNIS AIR SERVICE INC

Hex
AD1FEE
Octal
53217756
Decimal
11,345,902
Country
US
Tail
N945CA
Type
P212
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
309
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S AD1FEE.

Country allocation

The ICAO 24-bit address AD1FEE 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
KAP5050 Cape Air 41 2026-06-17
KAP1333 Cape Air 18 2026-07-26
KAP1850 - 15 2026-07-14
KAPT241 - 14 2026-07-02
KAP734 - 14 2026-06-14
KAP5483 Cape Air 11 2026-07-21
KAP922 - 10 2026-07-19
KAP82 - 9 2026-07-14
KAP2112 - 8 2026-07-09
KAP926 - 7 2026-07-15
KAP86 Cape Air 7 2026-07-25
KAP68 - 7 2026-07-05
KAP388 - 7 2026-07-16
KAP1856 Cape Air 7 2026-05-14
KAP801 - 6 2026-07-02
KAP7021 Cape Air 6 2026-05-16
KAP321 Cape Air 6 2026-07-19
KAP1874 Cape Air 6 2026-07-25
KAP164 Cape Air 5 2026-06-14
KAP1006 Cape Air 5 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAP1333 BOS → BHB Jul 26, 20:55 UTCJul 26, 21:30 UTC35m
2026-07-26 KAP1333 BOS → BHB Jul 26, 19:05 UTCJul 26, 20:15 UTC1h 10m
2026-07-25 KAP86 SLK → JFK Jul 25, 17:50 UTCJul 25, 18:25 UTC35m
2026-07-25 KAP1874 LEB → BOS Jul 25, 15:10 UTCJul 25, 16:05 UTC55m
2026-07-25 KAP86 SLK → JFK Jul 25, 12:55 UTCJul 25, 13:35 UTC40m
2026-07-25 KAP1870 LEB → BOS Jul 25, 11:20 UTCJul 25, 12:05 UTC45m
2026-07-24 KAP86 SLK → JFK Jul 24, 21:35 UTCJul 24, 22:15 UTC40m
2026-07-24 KAP1880 LEB → BOS Jul 24, 19:55 UTCJul 24, 20:40 UTC45m
2026-07-24 KAP86 SLK → JFK Jul 24, 18:20 UTCJul 24, 19:00 UTC40m
2026-07-24 KAP1874 LEB → BOS Jul 24, 15:10 UTCJul 24, 15:55 UTC45m
2026-07-24 KAP86 SLK → JFK Jul 24, 13:00 UTCJul 24, 13:40 UTC40m
2026-07-24 KAP1870 LEB → BOS Jul 24, 11:15 UTCJul 24, 12:05 UTC50m
2026-07-23 KAP501 LEB → HPN Jul 23, 16:30 UTCJul 23, 18:00 UTC1h 30m
2026-07-21 KAP5483 SLK → JFK Jul 21, 15:00 UTCJul 21, 15:40 UTC40m
2026-07-20 KAP5483 SLK → JFK Jul 20, 21:00 UTCJul 20, 22:30 UTC1h 30m
2026-07-20 KAP5483 SLK → JFK Jul 20, 19:00 UTCJul 20, 20:10 UTC1h 10m
2026-07-20 KAP5483 SLK → JFK Jul 20, 15:35 UTCJul 20, 16:40 UTC1h 5m
2026-07-20 KAP1000 AUG → BOS Jul 20, 11:25 UTCJul 20, 12:15 UTC50m
2026-07-19 KAP922 - Jul 19, 21:35 UTCJul 19, 21:55 UTC20m
2026-07-19 KAP922 - Jul 19, 21:05 UTCJul 19, 21:30 UTC25m
2026-07-19 KAP922 - Jul 19, 19:15 UTCJul 19, 20:15 UTC1h 0m
2026-07-19 KAP922 - Jul 19, 17:15 UTCJul 19, 18:10 UTC55m
2026-07-19 KAP922 - Jul 19, 11:30 UTCJul 19, 12:20 UTC50m
2026-07-19 KAP321 BOS → MVY Jul 19, 00:00 UTCJul 19, 00:50 UTC50m
2026-07-18 KAP5361 ACK → BOS Jul 18, 22:30 UTCJul 18, 23:05 UTC35m
2026-07-18 KAP321 BOS → MVY Jul 18, 20:10 UTCJul 18, 20:45 UTC35m
2026-07-18 KAP1004 AUG → BOS Jul 18, 18:00 UTCJul 18, 19:10 UTC1h 10m
2026-07-18 KAP321 BOS → MVY Jul 18, 15:00 UTCJul 18, 15:50 UTC50m
2026-07-18 KAP1008 - Jul 18, 13:05 UTCJul 18, 14:05 UTC1h 0m
2026-07-17 KAP321 BOS → MVY Jul 17, 23:50 UTCJul 18, 00:39 UTC50m
2026-07-17 KAP5361 ACK → BOS Jul 17, 22:20 UTCJul 17, 23:00 UTC40m
2026-07-17 KAP321 BOS → MVY Jul 17, 19:55 UTCJul 17, 20:25 UTC30m
2026-07-17 KAP7162 - Jul 17, 18:25 UTCJul 17, 18:44 UTC20m
2026-07-17 KAP321 BOS → MVY Jul 17, 15:00 UTCJul 17, 15:29 UTC30m
2026-07-16 KAP1858 - Jul 16, 20:49 UTCJul 16, 22:00 UTC1h 10m
2026-07-16 KAP1858 - Jul 16, 20:05 UTCJul 16, 20:15 UTC10m
2026-07-16 KAP388 - Jul 16, 16:09 UTCJul 16, 17:05 UTC55m
2026-07-15 KAP6184 - Jul 15, 22:00 UTCJul 15, 22:25 UTC25m
2026-07-15 KAP388 - Jul 15, 19:35 UTCJul 15, 19:45 UTC10m
2026-07-15 KAP388 BNH → MVY Jul 15, 18:15 UTCJul 15, 18:45 UTC30m
2026-07-15 KAP926 - Jul 15, 16:00 UTCJul 15, 16:40 UTC40m
2026-07-15 KAP926 - Jul 15, 13:35 UTCJul 15, 14:20 UTC45m
2026-07-14 KAP1858 RKD → BOS Jul 14, 19:30 UTCJul 14, 20:30 UTC1h 0m
2026-07-14 KAP82 BOS → RKD Jul 14, 17:15 UTCJul 14, 18:15 UTC1h 0m
2026-07-14 KAP402 RKD → BOS Jul 14, 14:50 UTCJul 14, 15:45 UTC55m
2026-07-14 KAP402 BOS → RKD Jul 14, 13:00 UTCJul 14, 14:05 UTC1h 5m
2026-07-14 KAP1850 RKD → BOS Jul 14, 11:10 UTCJul 14, 12:05 UTC55m
2026-07-13 KAP18 BOS → RKD Jul 13, 21:50 UTCJul 13, 22:45 UTC55m
2026-07-13 KAP1858 RKD → BOS Jul 13, 19:35 UTCJul 13, 20:40 UTC1h 5m
2026-07-13 KAP18 BOS → RKD Jul 13, 17:45 UTCJul 13, 18:40 UTC55m

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 N945CA page for operator, model, and routing details .

Mode-S AD1FEE frequently asked

What is Mode-S code AD1FEE?
AD1FEE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N945CA.
Where is Mode-S AD1FEE registered?
Mode-S code AD1FEE 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 AD1FEE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD1FEE, octal 53217756, decimal 11,345,902.
What flights does AD1FEE operate?
Mode-S AD1FEE has broadcast 20 distinct callsigns, including KAP5050, KAP1333, KAP1850, KAPT241, KAP734.