Apparatus

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sensors Mode-S transponder

A81141

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N619MA · CESSNA 208 Caravan · operated by KENMORE AIR HARBOR LLC

Hex
A81141
Octal
52010501
Decimal
11,014,465
Country
US
Tail
N619MA
Type
C208
No current signal · last broadcast 6h ago
Flights observed
133
Distinct callsigns
13
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A81141.

Country allocation

The ICAO 24-bit address A81141 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 13 distinct

Callsign Airline Flights Last seen
KEN1818 Kenmore Air 22 2026-05-30
KEN2020 Kenmore Air 20 2026-06-01
KEN5151 Kenmore Air 17 2026-05-23
KEN5050 Kenmore Air 16 2026-04-20
KEN7878 Kenmore Air 13 2026-05-25
KEN1710 Kenmore Air 11 2026-05-30
KEN4444 Kenmore Air 8 2026-06-02
KEN3030 Kenmore Air 7 2026-05-11
KEN2839 Kenmore Air 7 2026-04-21
KEN6565 Kenmore Air 5 2026-05-29
KEN1010 Kenmore Air 4 2026-05-26
KEN3232 Kenmore Air 2 2026-05-31
KEN3333 Kenmore Air 1 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 KEN4444 FRD → BFI Jun 2, 17:50 UTCJun 2, 19:35 UTC1h 45m
2026-06-01 KEN2020 ESD → BFI Jun 1, 20:35 UTCJun 1, 22:10 UTC1h 35m
2026-06-01 KEN2020 ESD → BFI Jun 1, 19:25 UTCJun 1, 19:55 UTC30m
2026-06-01 KEN2020 ESD → BFI Jun 1, 18:25 UTCJun 1, 18:55 UTC30m
2026-06-01 KEN2020 ESD → BFI Jun 1, 16:55 UTCJun 1, 17:25 UTC30m
2026-06-01 KEN2020 ESD → BFI Jun 1, 13:35 UTCJun 1, 14:35 UTC1h 0m
2026-05-31 KEN3232 PDX → PAE May 31, 20:35 UTCMay 31, 22:20 UTC1h 45m
2026-05-31 KEN4444 FRD → BFI May 31, 18:35 UTCMay 31, 20:00 UTC1h 25m
2026-05-31 KEN4444 FRD → BFI May 31, 17:15 UTCMay 31, 17:50 UTC35m
2026-05-31 KEN4444 FRD → BFI May 31, 16:15 UTCMay 31, 16:45 UTC30m
2026-05-30 KEN1818 FRD → PAE May 30, 23:05 UTCMay 31, 00:50 UTC1h 45m
2026-05-30 KEN1818 FRD → PAE May 30, 20:30 UTCMay 30, 21:55 UTC1h 25m
2026-05-30 KEN1818 FRD → PAE May 30, 19:35 UTCMay 30, 20:05 UTC30m
2026-05-30 KEN1818 FRD → PAE May 30, 18:35 UTCMay 30, 19:05 UTC30m
2026-05-30 KEN1710 BFI → PAE May 30, 01:20 UTCMay 30, 01:30 UTC10m
2026-05-29 KEN6565 FRD → BFI May 29, 00:25 UTCMay 29, 00:45 UTC20m
2026-05-28 KEN6565 FRD → BFI May 28, 23:25 UTCMay 28, 23:55 UTC30m
2026-05-28 KEN6565 FRD → BFI May 28, 20:50 UTCMay 28, 22:35 UTC1h 45m
2026-05-28 KEN6565 FRD → BFI May 28, 18:40 UTCMay 28, 19:55 UTC1h 15m
2026-05-28 KEN1818 FRD → PAE May 28, 00:25 UTCMay 28, 00:55 UTC30m
2026-05-27 KEN1818 FRD → PAE May 27, 23:10 UTCMay 27, 23:45 UTC35m
2026-05-27 KEN1818 FRD → PAE May 27, 18:40 UTCMay 27, 20:00 UTC1h 20m
2026-05-27 KEN1818 FRD → PAE May 27, 16:05 UTCMay 27, 17:25 UTC1h 20m
2026-05-26 KEN1010 BFI → FRD May 26, 16:59 UTCMay 26, 18:50 UTC1h 50m
2026-05-25 KEN7878 ESD → BFI May 25, 22:00 UTCMay 25, 22:34 UTC35m
2026-05-25 KEN7878 ESD → BFI May 25, 20:30 UTCMay 25, 20:59 UTC30m
2026-05-25 KEN7878 ESD → BFI May 25, 18:30 UTCMay 25, 19:54 UTC1h 25m
2026-05-25 KEN7878 ESD → BFI May 25, 17:05 UTCMay 25, 17:35 UTC30m
2026-05-25 KEN7878 ESD → BFI May 25, 15:15 UTCMay 25, 15:40 UTC25m
2026-05-24 KEN7878 ESD → BFI May 24, 20:35 UTCMay 24, 21:45 UTC1h 10m
2026-05-24 KEN7878 ESD → BFI May 24, 18:35 UTCMay 24, 20:00 UTC1h 25m
2026-05-23 KEN6565 FRD → BFI May 23, 23:05 UTCMay 24, 00:45 UTC1h 40m
2026-05-23 KEN5151 BFI → PWT May 23, 18:55 UTCMay 23, 20:25 UTC1h 30m
2026-05-23 KEN5151 BFI → PWT May 23, 16:20 UTCMay 23, 17:55 UTC1h 35m
2026-05-22 KEN1818 FRD → PAE May 22, 23:10 UTCMay 23, 00:25 UTC1h 15m
2026-05-22 KEN1818 FRD → PAE May 22, 20:35 UTCMay 22, 22:05 UTC1h 30m
2026-05-22 KEN1818 FRD → PAE May 22, 18:45 UTCMay 22, 20:15 UTC1h 30m
2026-05-18 KEN5151 BFI → PWT May 18, 00:05 UTCMay 18, 00:35 UTC30m
2026-05-17 KEN5151 BFI → PWT May 17, 23:00 UTCMay 17, 23:30 UTC30m
2026-05-17 KEN5151 BFI → PWT May 17, 21:45 UTCMay 17, 22:10 UTC25m
2026-05-17 KEN5151 BFI → PWT May 17, 20:35 UTCMay 17, 21:05 UTC30m
2026-05-17 KEN5151 BFI → PWT May 17, 19:35 UTCMay 17, 20:01 UTC25m
2026-05-17 KEN5151 BFI → PWT May 17, 18:30 UTCMay 17, 19:01 UTC30m
2026-05-17 KEN5151 BFI → PWT May 17, 16:20 UTCMay 17, 17:50 UTC1h 30m
2026-05-15 KEN2020 ESD → BFI May 15, 23:20 UTCMay 16, 00:50 UTC1h 30m
2026-05-15 KEN2020 ESD → BFI May 15, 20:45 UTCMay 15, 22:40 UTC1h 55m
2026-05-15 KEN2020 ESD → BFI May 15, 16:35 UTCMay 15, 18:10 UTC1h 35m
2026-05-14 KEN1818 FRD → PAE May 14, 22:50 UTCMay 15, 00:35 UTC1h 45m
2026-05-14 KEN1818 FRD → PAE May 14, 20:35 UTCMay 14, 21:55 UTC1h 20m
2026-05-14 KEN1818 FRD → PAE May 14, 18:30 UTCMay 14, 19:55 UTC1h 25m

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 N619MA page for operator, model, and routing details .

Mode-S A81141 frequently asked

What is Mode-S code A81141?
A81141 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N619MA.
Where is Mode-S A81141 registered?
Mode-S code A81141 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 A81141 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A81141, octal 52010501, decimal 11,014,465.
What flights does A81141 operate?
Mode-S A81141 has broadcast 13 distinct callsigns, including KEN1818, KEN2020, KEN5151, KEN5050, KEN7878.