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sensors Mode-S transponder

ADC43E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9863Q · CESSNA 185 Skywagon · operated by WATTUM INVESTMENTS LLC

Hex
ADC43E
Octal
53342076
Decimal
11,387,966
Country
US
Tail
N9863Q
Type
C185
No current signal · last broadcast 7d ago
Flights observed
103
Distinct callsigns
1
Country
US
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S ADC43E.

Country allocation

The ICAO 24-bit address ADC43E 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
N9863Q - 103 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N9863Q - Jul 25, 21:40 UTCJul 25, 21:45 UTC5m
2026-07-25 N9863Q - Jul 25, 20:50 UTCJul 25, 21:00 UTC10m
2026-07-25 N9863Q - Jul 25, 20:20 UTCJul 25, 20:25 UTC5m
2026-07-25 N9863Q - Jul 25, 18:10 UTCJul 25, 18:20 UTC10m
2026-07-25 N9863Q - Jul 25, 17:25 UTCJul 25, 17:35 UTC10m
2026-07-25 N9863Q - Jul 25, 16:35 UTCJul 25, 16:50 UTC15m
2026-07-25 N9863Q - Jul 25, 15:25 UTCJul 25, 16:10 UTC45m
2026-07-23 N9863Q - Jul 23, 00:50 UTCJul 23, 00:55 UTC5m
2026-07-22 N9863Q - Jul 22, 21:45 UTCJul 22, 22:05 UTC20m
2026-07-19 N9863Q KDK → KDK Jul 19, 23:45 UTCJul 20, 00:20 UTC35m
2026-07-18 N9863Q - Jul 18, 03:50 UTCJul 18, 03:55 UTC5m
2026-07-16 N9863Q - Jul 16, 02:15 UTCJul 16, 02:20 UTC5m
2026-07-16 N9863Q - Jul 16, 01:05 UTCJul 16, 01:10 UTC5m
2026-07-15 N9863Q - Jul 15, 19:00 UTCJul 15, 19:10 UTC10m
2026-07-15 N9863Q - Jul 15, 17:45 UTCJul 15, 17:55 UTC10m
2026-07-15 N9863Q - Jul 15, 17:10 UTCJul 15, 17:15 UTC5m
2026-07-15 N9863Q - Jul 15, 16:15 UTCJul 15, 16:25 UTC10m
2026-07-15 N9863Q - Jul 15, 15:55 UTCJul 15, 16:00 UTC5m
2026-07-14 N9863Q - Jul 14, 00:45 UTCJul 14, 00:50 UTC5m
2026-07-13 N9863Q - Jul 13, 22:40 UTCJul 13, 22:45 UTC5m
2026-07-13 N9863Q - Jul 13, 18:25 UTCJul 13, 18:30 UTC5m
2026-07-13 N9863Q - Jul 13, 02:10 UTCJul 13, 02:15 UTC5m
2026-07-13 N9863Q - Jul 13, 00:05 UTCJul 13, 00:15 UTC10m
2026-07-10 N9863Q - Jul 10, 23:25 UTCJul 10, 23:35 UTC10m
2026-07-10 N9863Q - Jul 10, 22:35 UTCJul 10, 22:45 UTC10m
2026-07-10 N9863Q KDK → ADQ Jul 10, 16:45 UTCJul 10, 16:50 UTC5m
2026-07-02 N9863Q KDK → KDK Jul 2, 03:00 UTCJul 2, 03:30 UTC30m
2026-07-01 N9863Q KDK → ADQ Jul 1, 17:10 UTCJul 1, 17:15 UTC5m
2026-06-30 N9863Q - Jun 30, 19:15 UTCJun 30, 19:25 UTC10m
2026-06-26 N9863Q - Jun 26, 18:15 UTCJun 26, 18:29 UTC15m
2026-06-26 N9863Q - Jun 26, 16:24 UTCJun 26, 16:44 UTC20m
2026-06-25 N9863Q - Jun 25, 17:54 UTCJun 25, 18:10 UTC15m
2026-06-25 N9863Q - Jun 25, 16:35 UTCJun 25, 16:55 UTC20m
2026-06-25 N9863Q - Jun 25, 01:59 UTCJun 25, 02:10 UTC10m
2026-06-25 N9863Q - Jun 25, 01:04 UTCJun 25, 01:14 UTC10m
2026-06-24 N9863Q - Jun 24, 22:29 UTCJun 24, 22:35 UTC5m
2026-06-24 N9863Q KDK → KDK Jun 24, 16:14 UTCJun 24, 16:50 UTC35m
2026-06-23 N9863Q - Jun 23, 23:00 UTCJun 23, 23:05 UTC5m
2026-06-23 N9863Q - Jun 23, 21:59 UTCJun 23, 22:10 UTC10m
2026-06-23 N9863Q - Jun 23, 21:34 UTCJun 23, 21:39 UTC5m
2026-06-23 N9863Q - Jun 23, 17:30 UTCJun 23, 17:34 UTC5m
2026-06-19 N9863Q - Jun 19, 16:59 UTCJun 19, 17:09 UTC10m
2026-06-19 N9863Q - Jun 19, 03:09 UTCJun 19, 03:15 UTC5m
2026-06-19 N9863Q - Jun 19, 02:19 UTCJun 19, 02:29 UTC10m
2026-06-19 N9863Q - Jun 19, 00:49 UTCJun 19, 00:59 UTC10m
2026-06-19 N9863Q - Jun 19, 00:20 UTCJun 19, 00:40 UTC20m
2026-06-18 N9863Q - Jun 18, 23:30 UTCJun 18, 23:40 UTC10m
2026-06-17 N9863Q - Jun 17, 21:55 UTCJun 17, 22:10 UTC15m
2026-06-17 N9863Q - Jun 17, 20:35 UTCJun 17, 20:50 UTC15m
2026-06-17 N9863Q - Jun 17, 17:25 UTCJun 17, 17:30 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 N9863Q page for operator, model, and routing details .

Mode-S ADC43E frequently asked

What is Mode-S code ADC43E?
ADC43E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9863Q.
Where is Mode-S ADC43E registered?
Mode-S code ADC43E 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 ADC43E broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADC43E, octal 53342076, decimal 11,387,966.
What flights does ADC43E operate?
Mode-S ADC43E has broadcast 1 distinct callsign, including N9863Q.