Apparatus

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sensors Mode-S transponder

A1D0BC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N216KQ · DAHER Kodiak 100 · operated by STATE OF WASHINGTON, DEPARTMENT OF NATURAL RESOURCES

Hex
A1D0BC
Octal
50350274
Decimal
10,604,732
Country
US
Tail
N216KQ
Type
K100
No current signal · last broadcast 15h ago
Flights observed
90
Distinct callsigns
1
Country
US
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S A1D0BC.

Country allocation

The ICAO 24-bit address A1D0BC 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 1 distinct

Callsign Airline Flights Last seen
N216KQ - 90 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N216KQ - Jul 13, 18:00 UTCJul 13, 18:25 UTC25m
2026-07-13 N216KQ - Jul 13, 00:15 UTCJul 13, 00:50 UTC35m
2026-07-12 N216KQ - Jul 12, 21:35 UTCJul 12, 22:15 UTC40m
2026-07-11 N216KQ - Jul 11, 23:15 UTCJul 11, 23:55 UTC40m
2026-07-11 N216KQ - Jul 11, 15:50 UTCJul 11, 16:35 UTC45m
2026-07-10 N216KQ - Jul 10, 18:05 UTCJul 10, 19:35 UTC1h 30m
2026-07-09 N216KQ - Jul 9, 18:40 UTCJul 9, 19:15 UTC35m
2026-07-09 N216KQ - Jul 9, 16:15 UTCJul 9, 16:45 UTC30m
2026-07-08 N216KQ - Jul 8, 23:40 UTCJul 9, 02:40 UTC3h 0m
2026-07-08 N216KQ - Jul 8, 21:50 UTCJul 8, 22:55 UTC1h 5m
2026-07-07 N216KQ - Jul 7, 22:20 UTCJul 7, 22:40 UTC20m
2026-07-06 N216KQ - Jul 6, 18:55 UTCJul 6, 19:15 UTC20m
2026-07-05 N216KQ - Jul 5, 13:55 UTCJul 5, 15:50 UTC1h 55m
2026-07-05 N216KQ - Jul 5, 01:00 UTCJul 5, 02:50 UTC1h 50m
2026-07-04 N216KQ - Jul 4, 16:10 UTCJul 4, 18:10 UTC2h 0m
2026-07-03 N216KQ - Jul 3, 23:45 UTCJul 4, 00:25 UTC40m
2026-07-03 N216KQ - Jul 3, 18:20 UTCJul 3, 20:15 UTC1h 55m
2026-07-02 N216KQ SFF → OLM Jul 2, 20:05 UTCJul 2, 23:00 UTC2h 55m
2026-07-01 N216KQ - Jul 1, 21:10 UTCJul 1, 22:20 UTC1h 10m
2026-07-01 N216KQ - Jul 1, 19:30 UTCJul 1, 20:25 UTC55m
2026-07-01 N216KQ - Jul 1, 00:15 UTCJul 1, 01:50 UTC1h 35m
2026-06-30 N216KQ - Jun 30, 20:40 UTCJun 30, 21:45 UTC1h 5m
2026-06-30 N216KQ - Jun 30, 19:35 UTCJun 30, 19:45 UTC10m
2026-06-30 N216KQ - Jun 30, 15:35 UTCJun 30, 17:10 UTC1h 35m
2026-06-30 N216KQ - Jun 30, 00:00 UTCJun 30, 01:14 UTC1h 15m
2026-06-29 N216KQ - Jun 29, 19:20 UTCJun 29, 20:15 UTC55m
2026-06-29 N216KQ - Jun 29, 18:19 UTCJun 29, 18:34 UTC15m
2026-06-29 N216KQ - Jun 29, 16:39 UTCJun 29, 17:45 UTC1h 5m
2026-06-28 N216KQ - Jun 28, 23:34 UTCJun 29, 01:05 UTC1h 30m
2026-06-28 N216KQ - Jun 28, 21:55 UTCJun 28, 22:04 UTC10m
2026-06-28 N216KQ - Jun 28, 19:20 UTCJun 28, 19:49 UTC30m
2026-06-27 N216KQ - Jun 27, 19:05 UTCJun 27, 19:15 UTC10m
2026-06-25 N216KQ - Jun 25, 23:24 UTCJun 25, 23:39 UTC15m
2026-06-25 N216KQ - Jun 25, 20:05 UTCJun 25, 22:10 UTC2h 5m
2026-06-25 N216KQ CLM → OLM Jun 25, 16:45 UTCJun 25, 17:49 UTC1h 5m
2026-06-24 N216KQ CLM → CLM Jun 24, 23:24 UTCJun 25, 01:24 UTC2h 0m
2026-06-24 N216KQ - Jun 24, 20:24 UTCJun 24, 22:35 UTC2h 10m
2026-06-24 N216KQ - Jun 24, 17:34 UTCJun 24, 19:10 UTC1h 35m
2026-06-23 N216KQ - Jun 23, 18:25 UTCJun 23, 18:34 UTC10m
2026-06-23 N216KQ - Jun 23, 16:09 UTCJun 23, 17:09 UTC1h 0m
2026-06-18 N216KQ - Jun 18, 21:50 UTCJun 18, 22:40 UTC50m
2026-06-17 N216KQ - Jun 17, 21:30 UTCJun 17, 21:50 UTC20m
2026-06-17 N216KQ - Jun 17, 17:10 UTCJun 17, 17:35 UTC25m
2026-06-17 N216KQ - Jun 17, 14:40 UTCJun 17, 15:55 UTC1h 15m
2026-06-16 N216KQ - Jun 16, 17:24 UTCJun 16, 18:05 UTC40m
2026-06-16 N216KQ - Jun 16, 16:20 UTCJun 16, 16:39 UTC20m
2026-06-15 N216KQ - Jun 15, 22:45 UTCJun 15, 22:54 UTC10m
2026-06-15 N216KQ - Jun 15, 21:20 UTCJun 15, 21:35 UTC15m
2026-06-15 N216KQ - Jun 15, 20:00 UTCJun 15, 20:04 UTC5m
2026-06-15 N216KQ - Jun 15, 18:20 UTCJun 15, 18:35 UTC15m

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 N216KQ page for operator, model, and routing details .

Mode-S A1D0BC frequently asked

What is Mode-S code A1D0BC?
A1D0BC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N216KQ.
Where is Mode-S A1D0BC registered?
Mode-S code A1D0BC 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 A1D0BC broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1D0BC, octal 50350274, decimal 10,604,732.
What flights does A1D0BC operate?
Mode-S A1D0BC has broadcast 1 distinct callsign, including N216KQ.