Apparatus

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sensors Mode-S transponder

A1C7B0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2135B · PIPER PA-28-140/150/160/180 · operated by MILOUD CHADD K

Hex
A1C7B0
Octal
50343660
Decimal
10,602,416
Country
US
Tail
N2135B
Type
P28A
No current signal · last broadcast Jul 26, 21:05 UTC
Flights observed
112
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 21:05 UTC

Last known position

Most recent position reported by Mode-S A1C7B0.

Country allocation

The ICAO 24-bit address A1C7B0 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
N2135B - 112 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N2135B - Jul 26, 19:45 UTCJul 26, 21:05 UTC1h 20m
2026-07-26 N2135B - Jul 26, 16:30 UTCJul 26, 18:45 UTC2h 15m
2026-07-25 N2135B FTW → FTW Jul 25, 16:15 UTCJul 25, 16:35 UTC20m
2026-07-25 N2135B - Jul 25, 14:25 UTCJul 25, 14:40 UTC15m
2026-07-24 N2135B FTW → FTW Jul 24, 02:35 UTCJul 24, 03:15 UTC40m
2026-07-23 N2135B - Jul 23, 15:50 UTCJul 23, 16:45 UTC55m
2026-07-23 N2135B - Jul 23, 12:00 UTCJul 23, 13:30 UTC1h 30m
2026-07-23 N2135B FTW → FTW Jul 23, 02:55 UTCJul 23, 03:55 UTC1h 0m
2026-07-22 N2135B FTW → FTW Jul 22, 18:05 UTCJul 22, 19:45 UTC1h 40m
2026-07-22 N2135B - Jul 22, 15:25 UTCJul 22, 16:10 UTC45m
2026-07-22 N2135B FTW → FTW Jul 22, 12:20 UTCJul 22, 14:05 UTC1h 45m
2026-07-21 N2135B FWH → FTW Jul 21, 17:50 UTCJul 21, 19:05 UTC1h 15m
2026-07-20 N2135B - Jul 20, 17:10 UTCJul 20, 17:45 UTC35m
2026-07-20 N2135B - Jul 20, 15:15 UTCJul 20, 15:55 UTC40m
2026-07-20 N2135B - Jul 20, 12:00 UTCJul 20, 13:15 UTC1h 15m
2026-07-19 N2135B - Jul 19, 14:40 UTCJul 19, 15:45 UTC1h 5m
2026-07-18 N2135B - Jul 18, 18:30 UTCJul 18, 19:35 UTC1h 5m
2026-07-18 N2135B - Jul 18, 11:55 UTCJul 18, 12:45 UTC50m
2026-07-17 N2135B FTW → FTW Jul 17, 14:44 UTCJul 17, 15:25 UTC40m
2026-07-14 N2135B - Jul 14, 15:20 UTCJul 14, 16:40 UTC1h 20m
2026-07-08 N2135B FTW → FTW Jul 8, 14:50 UTCJul 8, 15:25 UTC35m
2026-07-08 N2135B FTW → FTW Jul 8, 12:25 UTCJul 8, 13:20 UTC55m
2026-07-07 N2135B - Jul 7, 18:30 UTCJul 7, 19:25 UTC55m
2026-07-07 N2135B - Jul 7, 14:55 UTCJul 7, 16:35 UTC1h 40m
2026-07-07 N2135B - Jul 7, 11:50 UTCJul 7, 12:50 UTC1h 0m
2026-07-06 N2135B - Jul 6, 21:25 UTCJul 6, 21:50 UTC25m
2026-07-06 N2135B - Jul 6, 18:25 UTCJul 6, 18:45 UTC20m
2026-07-06 N2135B - Jul 6, 14:00 UTCJul 6, 14:50 UTC50m
2026-07-06 N2135B - Jul 6, 12:05 UTCJul 6, 13:00 UTC55m
2026-07-03 N2135B - Jul 3, 16:25 UTCJul 3, 18:05 UTC1h 40m
2026-07-03 N2135B - Jul 3, 13:30 UTCJul 3, 14:40 UTC1h 10m
2026-07-02 N2135B - Jul 2, 23:05 UTCJul 2, 23:35 UTC30m
2026-07-02 N2135B - Jul 2, 20:40 UTCJul 2, 21:25 UTC45m
2026-07-02 N2135B - Jul 2, 14:40 UTCJul 2, 17:10 UTC2h 30m
2026-07-01 N2135B - Jul 1, 19:35 UTCJul 1, 19:55 UTC20m
2026-07-01 N2135B - Jul 1, 17:30 UTCJul 1, 18:20 UTC50m
2026-07-01 N2135B - Jul 1, 12:55 UTCJul 1, 13:10 UTC15m
2026-06-30 N2135B - Jun 30, 21:05 UTCJun 30, 22:25 UTC1h 20m
2026-06-30 N2135B - Jun 30, 16:10 UTCJun 30, 17:00 UTC50m
2026-06-30 N2135B - Jun 30, 13:50 UTCJun 30, 15:10 UTC1h 20m
2026-06-25 N2135B - Jun 25, 22:04 UTCJun 25, 23:44 UTC1h 40m
2026-06-25 N2135B - Jun 25, 16:35 UTCJun 25, 18:10 UTC1h 35m
2026-06-25 N2135B - Jun 25, 13:59 UTCJun 25, 14:59 UTC1h 0m
2026-06-24 N2135B - Jun 24, 19:59 UTCJun 24, 21:40 UTC1h 40m
2026-06-24 N2135B - Jun 24, 17:20 UTCJun 24, 18:20 UTC1h 0m
2026-06-24 N2135B FTW → FTW Jun 24, 14:55 UTCJun 24, 16:09 UTC1h 15m
2026-06-23 N2135B - Jun 23, 21:39 UTCJun 23, 22:25 UTC45m
2026-06-23 N2135B FWH → FTW Jun 23, 01:35 UTCJun 23, 02:45 UTC1h 10m
2026-06-22 N2135B - Jun 22, 22:19 UTCJun 22, 23:24 UTC1h 5m
2026-06-22 N2135B - Jun 22, 18:35 UTCJun 22, 19:44 UTC1h 10m

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 N2135B page for operator, model, and routing details .

Mode-S A1C7B0 frequently asked

What is Mode-S code A1C7B0?
A1C7B0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2135B.
Where is Mode-S A1C7B0 registered?
Mode-S code A1C7B0 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 A1C7B0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1C7B0, octal 50343660, decimal 10,602,416.
What flights does A1C7B0 operate?
Mode-S A1C7B0 has broadcast 1 distinct callsign, including N2135B.