Apparatus

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sensors Mode-S transponder

A1D1C5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N216WE · BOEING 727-200 · operated by INTERNATIONAL TRADING COMPANY OF YUKON INC

Hex
A1D1C5
Octal
50350705
Decimal
10,604,997
Country
US
Tail
N216WE
Type
B722
No current signal · last broadcast Jul 25, 10:50 UTC
Flights observed
127
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 10:50 UTC

Last known position

Most recent position reported by Mode-S A1D1C5.

Country allocation

The ICAO 24-bit address A1D1C5 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
TSU216 Gulf & Caribbean Cargo / Contract Air Cargo 127 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 TSU216 PTK → PBC Jul 25, 04:30 UTCJul 25, 10:50 UTC6h 20m
2026-07-24 TSU216 PTK → PBC Jul 24, 21:20 UTCJul 25, 00:15 UTC2h 55m
2026-07-22 TSU216 PTK → PBC Jul 22, 13:40 UTCJul 22, 18:35 UTC4h 55m
2026-07-21 TSU216 PTK → PBC Jul 21, 08:15 UTCJul 21, 09:05 UTC50m
2026-07-21 TSU216 PTK → PBC Jul 21, 05:30 UTCJul 21, 06:30 UTC1h 0m
2026-07-20 TSU216 PTK → PBC Jul 20, 22:10 UTCJul 20, 23:50 UTC1h 40m
2026-07-20 TSU216 PTK → PBC Jul 20, 19:40 UTCJul 20, 21:15 UTC1h 35m
2026-07-20 TSU216 PTK → PBC Jul 20, 17:15 UTCJul 20, 18:35 UTC1h 20m
2026-07-17 TSU216 PTK → PBC Jul 17, 22:55 UTCJul 18, 00:15 UTC1h 20m
2026-07-17 TSU216 PTK → PBC Jul 17, 20:29 UTCJul 17, 21:55 UTC1h 25m
2026-06-30 TSU216 - Jun 30, 14:50 UTCJun 30, 15:15 UTC25m
2026-06-30 TSU216 - Jun 30, 11:00 UTCJun 30, 13:20 UTC2h 20m
2026-06-30 TSU216 - Jun 30, 01:55 UTCJun 30, 10:05 UTC8h 10m
2026-06-28 TSU216 PTK → PBC Jun 28, 23:50 UTCJun 29, 00:34 UTC45m
2026-06-28 TSU216 PTK → PBC Jun 28, 20:19 UTCJun 28, 22:45 UTC2h 25m
2026-06-28 TSU216 PTK → PBC Jun 28, 12:05 UTCJun 28, 18:55 UTC6h 50m
2026-06-26 TSU216 PTK → PBC Jun 26, 17:50 UTCJun 26, 18:15 UTC25m
2026-06-26 TSU216 PTK → PBC Jun 26, 12:50 UTCJun 26, 15:20 UTC2h 30m
2026-06-26 TSU216 PTK → PBC Jun 26, 04:34 UTCJun 26, 11:49 UTC7h 15m
2026-06-25 TSU216 PTK → PBC Jun 25, 16:50 UTCJun 25, 19:54 UTC3h 5m
2026-06-25 TSU216 PTK → PBC Jun 25, 11:50 UTCJun 25, 14:34 UTC2h 45m
2026-06-25 TSU216 PTK → PBC Jun 25, 06:20 UTCJun 25, 09:05 UTC2h 45m
2026-06-25 TSU216 PTK → PBC Jun 25, 02:59 UTCJun 25, 03:29 UTC30m
2026-06-24 TSU216 PTK → PBC Jun 24, 01:04 UTCJun 24, 03:00 UTC1h 55m
2026-06-23 TSU216 PTK → PBC Jun 23, 20:40 UTCJun 23, 23:00 UTC2h 20m
2026-06-20 TSU216 PTK → PBC Jun 20, 06:49 UTCJun 20, 09:34 UTC2h 45m
2026-06-20 TSU216 PTK → PBC Jun 20, 00:44 UTCJun 20, 03:14 UTC2h 30m
2026-06-19 TSU216 PTK → PBC Jun 19, 13:20 UTCJun 19, 15:39 UTC2h 20m
2026-06-19 TSU216 PTK → PBC Jun 19, 08:24 UTCJun 19, 11:49 UTC3h 25m
2026-06-19 TSU216 PTK → PBC Jun 19, 02:09 UTCJun 19, 04:44 UTC2h 35m
2026-06-17 TSU216 PTK → PBC Jun 17, 22:05 UTCJun 18, 00:55 UTC2h 50m
2026-06-17 TSU216 PTK → PBC Jun 17, 15:30 UTCJun 17, 16:40 UTC1h 10m
2026-06-17 TSU216 PTK → PBC Jun 17, 11:10 UTCJun 17, 12:35 UTC1h 25m
2026-06-17 TSU216 PTK → PBC Jun 17, 08:20 UTCJun 17, 09:40 UTC1h 20m
2026-06-17 TSU216 PTK → PBC Jun 17, 06:35 UTCJun 17, 07:00 UTC25m
2026-06-16 TSU216 PTK → PBC Jun 16, 06:35 UTCJun 16, 07:20 UTC45m
2026-06-16 TSU216 PTK → PBC Jun 16, 03:30 UTCJun 16, 05:40 UTC2h 10m
2026-06-15 TSU216 PTK → PBC Jun 15, 15:40 UTCJun 16, 01:25 UTC9h 45m
2026-06-15 TSU216 PTK → PBC Jun 15, 01:35 UTCJun 15, 04:45 UTC3h 10m
2026-06-11 TSU216 PTK → PBC Jun 11, 18:35 UTCJun 11, 19:40 UTC1h 5m
2026-06-11 TSU216 PTK → PBC Jun 11, 15:35 UTCJun 11, 17:45 UTC2h 10m
2026-06-11 TSU216 PTK → PBC Jun 11, 11:55 UTCJun 11, 14:45 UTC2h 50m
2026-06-11 TSU216 PTK → PBC Jun 11, 04:40 UTCJun 11, 05:40 UTC1h 0m
2026-06-10 TSU216 PTK → PBC Jun 10, 23:35 UTCJun 11, 02:35 UTC3h 0m
2026-06-10 TSU216 PTK → PBC Jun 10, 21:05 UTCJun 10, 22:40 UTC1h 35m
2026-06-10 TSU216 PTK → PBC Jun 10, 14:00 UTCJun 10, 17:45 UTC3h 45m
2026-06-09 TSU216 PTK → PBC Jun 9, 11:35 UTCJun 9, 14:25 UTC2h 50m
2026-06-09 TSU216 PTK → PBC Jun 9, 07:55 UTCJun 9, 09:45 UTC1h 50m
2026-06-09 TSU216 PTK → PBC Jun 9, 01:30 UTCJun 9, 05:20 UTC3h 50m
2026-06-08 TSU216 PTK → PBC Jun 8, 20:10 UTCJun 8, 21:45 UTC1h 35m

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 N216WE page for operator, model, and routing details .

Mode-S A1D1C5 frequently asked

What is Mode-S code A1D1C5?
A1D1C5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N216WE.
Where is Mode-S A1D1C5 registered?
Mode-S code A1D1C5 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 A1D1C5 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 10:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1D1C5, octal 50350705, decimal 10,604,997.
What flights does A1D1C5 operate?
Mode-S A1D1C5 has broadcast 1 distinct callsign, including TSU216.