Apparatus

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sensors Mode-S transponder

A1CD2B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N215MC · CESSNA 208 Caravan · operated by TATONDUK OUTFITTERS LTD DBA, EVERTS AIR CARGO AND EVERTS AIR ALASKA

Hex
A1CD2B
Octal
50346453
Decimal
10,603,819
Country
US
Tail
N215MC
Type
C208
No current signal · last broadcast Jul 25, 20:15 UTC
Flights observed
38
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 20:15 UTC

Last known position

Most recent position reported by Mode-S A1CD2B.

Country allocation

The ICAO 24-bit address A1CD2B 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
N215MC - 38 2026-07-25

Recent flights last 38

DateFlightRouteTakeoffLandingDuration
2026-07-25 N215MC - Jul 25, 19:50 UTCJul 25, 20:10 UTC20m
2026-07-25 N215MC - Jul 25, 17:15 UTCJul 25, 17:40 UTC25m
2026-07-25 N215MC - Jul 25, 01:55 UTCJul 25, 02:10 UTC15m
2026-07-24 N215MC - Jul 24, 21:50 UTCJul 24, 22:20 UTC30m
2026-07-24 N215MC - Jul 24, 20:25 UTCJul 24, 20:55 UTC30m
2026-07-24 N215MC - Jul 24, 18:05 UTCJul 24, 18:40 UTC35m
2026-07-24 N215MC - Jul 24, 01:35 UTCJul 24, 02:10 UTC35m
2026-07-23 N215MC - Jul 23, 21:10 UTCJul 23, 21:55 UTC45m
2026-07-23 N215MC - Jul 23, 04:20 UTCJul 23, 04:35 UTC15m
2026-07-22 N215MC - Jul 22, 15:25 UTCJul 22, 15:45 UTC20m
2026-07-21 N215MC - Jul 21, 23:55 UTCJul 22, 00:15 UTC20m
2026-07-21 N215MC - Jul 21, 20:45 UTCJul 21, 21:15 UTC30m
2026-07-21 N215MC - Jul 21, 01:40 UTCJul 21, 02:00 UTC20m
2026-07-21 N215MC - Jul 21, 00:05 UTCJul 21, 00:25 UTC20m
2026-07-20 N215MC - Jul 20, 19:15 UTCJul 20, 19:55 UTC40m
2026-07-20 N215MC - Jul 20, 17:10 UTCJul 20, 17:55 UTC45m
2026-07-18 N215MC - Jul 18, 21:05 UTCJul 18, 21:25 UTC20m
2026-07-18 N215MC - Jul 18, 18:10 UTCJul 18, 18:40 UTC30m
2026-07-17 N215MC - Jul 17, 19:25 UTCJul 17, 21:20 UTC1h 55m
2026-07-17 N215MC - Jul 17, 17:44 UTCJul 17, 17:55 UTC10m
2026-07-17 N215MC - Jul 17, 15:44 UTCJul 17, 15:55 UTC10m
2026-07-17 N215MC - Jul 17, 02:10 UTCJul 17, 02:50 UTC40m
2026-07-16 N215MC - Jul 16, 22:00 UTCJul 16, 22:45 UTC45m
2026-07-16 N215MC - Jul 16, 20:15 UTCJul 16, 20:55 UTC40m
2026-07-16 N215MC - Jul 16, 18:05 UTCJul 16, 18:34 UTC30m
2026-07-16 N215MC - Jul 16, 01:50 UTCJul 16, 02:15 UTC25m
2026-07-16 N215MC - Jul 16, 00:10 UTCJul 16, 00:35 UTC25m
2026-07-15 N215MC TKJ → FAI Jul 15, 16:05 UTCJul 15, 17:20 UTC1h 15m
2026-07-15 N215MC FAI → TKJ Jul 15, 14:50 UTCJul 15, 15:55 UTC1h 5m
2026-07-15 N215MC - Jul 15, 01:30 UTCJul 15, 02:05 UTC35m
2026-07-14 N215MC - Jul 14, 21:05 UTCJul 14, 21:45 UTC40m
2026-07-14 N215MC - Jul 14, 19:50 UTCJul 14, 20:10 UTC20m
2026-07-14 N215MC - Jul 14, 16:00 UTCJul 14, 16:20 UTC20m
2026-07-13 N215MC - Jul 13, 23:45 UTCJul 14, 00:10 UTC25m
2026-07-13 N215MC - Jul 13, 20:30 UTCJul 13, 21:05 UTC35m
2026-07-13 N215MC - Jul 13, 18:20 UTCJul 13, 18:40 UTC20m
2026-07-13 N215MC - Jul 13, 16:40 UTCJul 13, 17:05 UTC25m
2026-07-10 N215MC - Jul 10, 18:55 UTCJul 10, 19:00 UTC5m

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 N215MC page for operator, model, and routing details .

Mode-S A1CD2B frequently asked

What is Mode-S code A1CD2B?
A1CD2B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N215MC.
Where is Mode-S A1CD2B registered?
Mode-S code A1CD2B 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 A1CD2B broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1CD2B, octal 50346453, decimal 10,603,819.
What flights does A1CD2B operate?
Mode-S A1CD2B has broadcast 1 distinct callsign, including N215MC.