Apparatus

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sensors Mode-S transponder

A0D8DC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1538Z · VANS RV-12 · operated by ANO BUILD ONE

Hex
A0D8DC
Octal
50154334
Decimal
10,541,276
Country
US
Tail
N1538Z
Type
RV12
No current signal · last broadcast 28d ago
Flights observed
80
Distinct callsigns
1
Country
US
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S A0D8DC.

Country allocation

The ICAO 24-bit address A0D8DC 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
N1538Z - 80 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N1538Z - Jul 23, 22:30 UTCJul 23, 23:35 UTC1h 5m
2026-07-23 N1538Z - Jul 23, 18:55 UTCJul 23, 21:25 UTC2h 30m
2026-07-20 N1538Z - Jul 20, 12:50 UTCJul 20, 14:05 UTC1h 15m
2026-07-19 N1538Z - Jul 19, 22:15 UTCJul 20, 00:10 UTC1h 55m
2026-07-19 N1538Z - Jul 19, 17:20 UTCJul 19, 18:25 UTC1h 5m
2026-07-19 N1538Z - Jul 19, 02:00 UTCJul 19, 02:15 UTC15m
2026-07-18 N1538Z - Jul 18, 15:00 UTCJul 18, 16:05 UTC1h 5m
2026-07-18 N1538Z - Jul 18, 13:10 UTCJul 18, 14:00 UTC50m
2026-07-16 N1538Z - Jul 16, 01:15 UTCJul 16, 02:10 UTC55m
2026-07-15 N1538Z - Jul 15, 23:55 UTCJul 16, 01:00 UTC1h 5m
2026-07-15 N1538Z - Jul 15, 02:15 UTCJul 15, 03:40 UTC1h 25m
2026-07-12 N1538Z - Jul 12, 17:50 UTCJul 12, 18:05 UTC15m
2026-07-12 N1538Z - Jul 12, 16:30 UTCJul 12, 17:05 UTC35m
2026-07-12 N1538Z - Jul 12, 14:05 UTCJul 12, 15:10 UTC1h 5m
2026-07-11 N1538Z - Jul 11, 22:15 UTCJul 11, 22:40 UTC25m
2026-07-11 N1538Z - Jul 11, 20:45 UTCJul 11, 21:05 UTC20m
2026-07-11 N1538Z - Jul 11, 03:01 UTCJul 11, 03:45 UTC45m
2026-07-10 N1538Z - Jul 10, 01:25 UTCJul 10, 04:50 UTC3h 25m
2026-07-09 N1538Z - Jul 9, 22:40 UTCJul 9, 22:55 UTC15m
2026-07-09 N1538Z - Jul 9, 21:55 UTCJul 9, 22:05 UTC10m
2026-07-09 N1538Z - Jul 9, 16:20 UTCJul 9, 16:35 UTC15m
2026-07-09 N1538Z - Jul 9, 00:25 UTCJul 9, 01:15 UTC50m
2026-07-07 N1538Z - Jul 7, 00:30 UTCJul 7, 01:15 UTC45m
2026-07-06 N1538Z - Jul 6, 19:45 UTCJul 6, 22:20 UTC2h 35m
2026-07-02 N1538Z - Jul 2, 19:35 UTCJul 2, 21:30 UTC1h 55m
2026-07-02 N1538Z - Jul 2, 16:10 UTCJul 2, 17:45 UTC1h 35m
2026-07-02 N1538Z - Jul 2, 12:35 UTCJul 2, 12:45 UTC10m
2026-06-26 N1538Z - Jun 26, 02:54 UTCJun 26, 03:45 UTC50m
2026-06-25 N1538Z - Jun 25, 16:45 UTCJun 25, 18:10 UTC1h 25m
2026-06-25 N1538Z - Jun 25, 00:40 UTCJun 25, 01:24 UTC45m
2026-06-24 N1538Z - Jun 24, 17:34 UTCJun 24, 17:45 UTC10m
2026-06-24 N1538Z - Jun 24, 15:49 UTCJun 24, 16:59 UTC1h 10m
2026-06-24 N1538Z - Jun 24, 12:54 UTCJun 24, 14:00 UTC1h 5m
2026-06-24 N1538Z - Jun 24, 11:54 UTCJun 24, 12:09 UTC15m
2026-06-24 N1538Z - Jun 24, 00:34 UTCJun 24, 01:49 UTC1h 15m
2026-06-23 N1538Z - Jun 23, 15:34 UTCJun 23, 15:50 UTC15m
2026-06-23 N1538Z - Jun 23, 14:04 UTCJun 23, 14:19 UTC15m
2026-06-22 N1538Z - Jun 22, 22:34 UTCJun 23, 01:10 UTC2h 35m
2026-06-21 N1538Z - Jun 21, 23:30 UTCJun 22, 00:20 UTC50m
2026-06-19 N1538Z - Jun 19, 10:59 UTCJun 19, 12:04 UTC1h 5m
2026-06-19 N1538Z - Jun 19, 01:50 UTCJun 19, 04:39 UTC2h 50m
2026-06-18 N1538Z - Jun 18, 23:40 UTCJun 19, 01:19 UTC1h 39m
2026-06-18 N1538Z - Jun 18, 15:00 UTCJun 18, 15:55 UTC55m
2026-06-18 N1538Z - Jun 18, 12:30 UTCJun 18, 12:50 UTC20m
2026-06-17 N1538Z - Jun 17, 22:35 UTCJun 17, 23:20 UTC45m
2026-06-17 N1538Z - Jun 17, 00:25 UTCJun 17, 03:55 UTC3h 30m
2026-06-16 N1538Z - Jun 16, 18:20 UTCJun 16, 20:40 UTC2h 21m
2026-06-16 N1538Z - Jun 16, 01:35 UTCJun 16, 02:24 UTC50m
2026-06-15 N1538Z - Jun 15, 23:19 UTCJun 16, 00:20 UTC1h 0m
2026-06-15 N1538Z - Jun 15, 21:09 UTCJun 15, 22:15 UTC1h 5m

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 N1538Z page for operator, model, and routing details .

Mode-S A0D8DC frequently asked

What is Mode-S code A0D8DC?
A0D8DC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1538Z.
Where is Mode-S A0D8DC registered?
Mode-S code A0D8DC 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 A0D8DC broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0D8DC, octal 50154334, decimal 10,541,276.
What flights does A0D8DC operate?
Mode-S A0D8DC has broadcast 1 distinct callsign, including N1538Z.