Apparatus

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sensors Mode-S transponder

AD2103

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N945PC · DIAMOND DA-40 Club Star · operated by ERDMAN AVIATION LLC

Hex
AD2103
Octal
53220403
Decimal
11,346,179
Country
US
Tail
N945PC
Type
DA40
No current signal · last broadcast 13h ago
Flights observed
138
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S AD2103.

Country allocation

The ICAO 24-bit address AD2103 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
N945PC - 138 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 N945PC MHR → MHR May 29, 20:55 UTCMay 29, 22:50 UTC1h 55m
2026-05-29 N945PC MHR → MHR May 29, 02:30 UTCMay 29, 03:15 UTC45m
2026-05-28 N945PC MHR → MHR May 28, 23:15 UTCMay 29, 00:35 UTC1h 20m
2026-05-28 N945PC MHR → MHR May 28, 21:00 UTCMay 28, 22:20 UTC1h 20m
2026-05-28 N945PC MHR → MHR May 28, 01:45 UTCMay 28, 03:15 UTC1h 30m
2026-05-27 N945PC MHR → MHR May 27, 21:50 UTCMay 27, 23:10 UTC1h 20m
2026-05-27 N945PC MHR → MHR May 27, 18:45 UTCMay 27, 19:50 UTC1h 5m
2026-05-27 N945PC - May 27, 16:50 UTCMay 27, 17:10 UTC20m
2026-05-27 N945PC MHR → SAC May 27, 16:00 UTCMay 27, 16:40 UTC40m
2026-05-25 N945PC MHR → MHR May 25, 23:04 UTCMay 26, 00:14 UTC1h 10m
2026-05-25 N945PC MHR → MHR May 25, 21:30 UTCMay 25, 21:54 UTC25m
2026-05-25 N945PC - May 25, 19:25 UTCMay 25, 19:40 UTC15m
2026-05-25 N945PC MHR → MHR May 25, 18:25 UTCMay 25, 19:20 UTC55m
2026-05-25 N945PC MHR → MHR May 25, 15:50 UTCMay 25, 16:35 UTC45m
2026-05-25 N945PC MHR → MHR May 25, 13:55 UTCMay 25, 15:00 UTC1h 5m
2026-05-24 N945PC MHR → MHR May 24, 18:15 UTCMay 24, 19:40 UTC1h 25m
2026-05-24 N945PC MHR → MHR May 24, 14:50 UTCMay 24, 15:45 UTC55m
2026-05-23 N945PC MHR → MHR May 23, 23:15 UTCMay 24, 00:45 UTC1h 30m
2026-05-23 N945PC MHR → MHR May 23, 21:05 UTCMay 23, 22:25 UTC1h 20m
2026-05-23 N945PC MHR → MHR May 23, 18:10 UTCMay 23, 18:35 UTC25m
2026-05-23 N945PC MHR → MHR May 23, 15:55 UTCMay 23, 16:45 UTC50m
2026-05-22 N945PC MHR → MHR May 22, 20:35 UTCMay 22, 21:45 UTC1h 10m
2026-05-22 N945PC MHR → MHR May 22, 16:40 UTCMay 22, 17:25 UTC45m
2026-05-22 N945PC - May 22, 03:00 UTCMay 22, 03:25 UTC25m
2026-05-21 N945PC - May 21, 23:50 UTCMay 22, 01:50 UTC2h 0m
2026-05-21 N945PC - May 21, 16:01 UTCMay 21, 16:25 UTC25m
2026-05-21 N945PC MHR → MHR May 21, 01:55 UTCMay 21, 03:15 UTC1h 20m
2026-05-20 N945PC MHR → MHR May 20, 23:30 UTCMay 21, 00:45 UTC1h 15m
2026-05-20 N945PC - May 20, 21:50 UTCMay 20, 22:25 UTC35m
2026-05-20 N945PC MHR → CCR May 20, 21:05 UTCMay 20, 21:40 UTC35m
2026-05-20 N945PC MHR → MHR May 20, 18:20 UTCMay 20, 19:45 UTC1h 25m
2026-05-20 N945PC MHR → MHR May 20, 16:40 UTCMay 20, 17:30 UTC50m
2026-05-20 N945PC MHR → MHR May 20, 14:05 UTCMay 20, 14:55 UTC50m
2026-05-20 N945PC MHR → MHR May 20, 02:10 UTCMay 20, 03:05 UTC55m
2026-05-19 N945PC MHR → MHR May 19, 18:25 UTCMay 19, 19:45 UTC1h 20m
2026-05-19 N945PC MHR → MHR May 19, 15:55 UTCMay 19, 17:15 UTC1h 20m
2026-05-18 N945PC MHR → MHR May 18, 22:20 UTCMay 18, 23:20 UTC1h 0m
2026-05-16 N945PC MHR → MHR May 16, 18:10 UTCMay 16, 19:40 UTC1h 30m
2026-05-16 N945PC MHR → MHR May 16, 01:45 UTCMay 16, 02:55 UTC1h 10m
2026-05-15 N945PC MHR → MHR May 15, 20:50 UTCMay 15, 22:10 UTC1h 20m
2026-05-15 N945PC MHR → MHR May 15, 18:30 UTCMay 15, 19:25 UTC55m
2026-05-15 N945PC MHR → MHR May 15, 15:45 UTCMay 15, 17:20 UTC1h 35m
2026-05-15 N945PC MHR → MHR May 15, 02:15 UTCMay 15, 03:20 UTC1h 5m
2026-05-14 N945PC MHR → MHR May 14, 20:45 UTCMay 14, 22:10 UTC1h 25m
2026-05-14 N945PC MHR → MHR May 14, 18:25 UTCMay 14, 19:55 UTC1h 30m
2026-05-14 N945PC MHR → MHR May 14, 16:15 UTCMay 14, 17:15 UTC1h 0m
2026-05-14 N945PC MHR → MHR May 14, 01:40 UTCMay 14, 02:40 UTC1h 0m
2026-05-13 N945PC MHR → MHR May 13, 18:40 UTCMay 13, 19:55 UTC1h 15m
2026-05-13 N945PC MHR → MHR May 13, 15:55 UTCMay 13, 17:20 UTC1h 25m
2026-05-12 N945PC MHR → MHR May 12, 20:20 UTCMay 12, 21:35 UTC1h 15m

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 N945PC page for operator, model, and routing details .

Mode-S AD2103 frequently asked

What is Mode-S code AD2103?
AD2103 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N945PC.
Where is Mode-S AD2103 registered?
Mode-S code AD2103 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 AD2103 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD2103, octal 53220403, decimal 11,346,179.
What flights does AD2103 operate?
Mode-S AD2103 has broadcast 1 distinct callsign, including N945PC.