Apparatus

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sensors Mode-S transponder

A9DDBD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N735BF · CESSNA 182 Skylane · operated by MEDVIGY GARY A TRUSTEE, PING CHRISTINE M TRUSTEE

Hex
A9DDBD
Octal
52356675
Decimal
11,132,349
Country
US
Tail
N735BF
Type
C182
No current signal · last broadcast Jul 25, 23:20 UTC
Flights observed
59
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 23:20 UTC

Last known position

Most recent position reported by Mode-S A9DDBD.

Country allocation

The ICAO 24-bit address A9DDBD 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
N735BF - 59 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N735BF - Jul 25, 22:15 UTCJul 25, 23:20 UTC1h 5m
2026-07-25 N735BF - Jul 25, 21:30 UTCJul 25, 21:50 UTC20m
2026-07-25 N735BF - Jul 25, 20:10 UTCJul 25, 20:30 UTC20m
2026-07-25 N735BF - Jul 25, 18:30 UTCJul 25, 18:45 UTC15m
2026-07-25 N735BF - Jul 25, 15:40 UTCJul 25, 16:40 UTC1h 0m
2026-07-24 N735BF - Jul 24, 17:55 UTCJul 24, 18:40 UTC45m
2026-07-19 N735BF - Jul 19, 17:45 UTCJul 19, 18:45 UTC1h 0m
2026-07-18 N735BF - Jul 18, 17:35 UTCJul 18, 18:05 UTC30m
2026-07-14 N735BF - Jul 14, 19:40 UTCJul 14, 21:00 UTC1h 20m
2026-07-14 N735BF - Jul 14, 17:20 UTCJul 14, 18:25 UTC1h 5m
2026-07-14 N735BF - Jul 14, 16:25 UTCJul 14, 16:40 UTC15m
2026-07-09 N735BF - Jul 9, 03:05 UTCJul 9, 03:55 UTC50m
2026-07-09 N735BF - Jul 9, 01:20 UTCJul 9, 02:40 UTC1h 20m
2026-07-09 N735BF - Jul 9, 00:25 UTCJul 9, 00:50 UTC25m
2026-07-08 N735BF - Jul 8, 23:50 UTCJul 8, 23:55 UTC5m
2026-07-05 N735BF - Jul 5, 21:15 UTCJul 5, 22:15 UTC1h 0m
2026-07-04 N735BF - Jul 4, 23:00 UTCJul 4, 23:25 UTC25m
2026-07-04 N735BF - Jul 4, 21:25 UTCJul 4, 22:25 UTC1h 0m
2026-06-27 N735BF - Jun 27, 23:34 UTCJun 28, 00:59 UTC1h 25m
2026-06-27 N735BF - Jun 27, 20:09 UTCJun 27, 22:25 UTC2h 15m
2026-06-26 N735BF - Jun 26, 20:34 UTCJun 26, 21:10 UTC35m
2026-06-26 N735BF - Jun 26, 19:09 UTCJun 26, 20:04 UTC55m
2026-06-26 N735BF - Jun 26, 18:09 UTCJun 26, 18:34 UTC25m
2026-06-26 N735BF - Jun 26, 14:09 UTCJun 26, 17:35 UTC3h 25m
2026-06-25 N735BF - Jun 25, 18:19 UTCJun 25, 18:55 UTC35m
2026-06-25 N735BF - Jun 25, 16:24 UTCJun 25, 17:20 UTC55m
2026-06-25 N735BF - Jun 25, 11:54 UTCJun 25, 14:50 UTC2h 55m
2026-06-22 N735BF - Jun 22, 18:40 UTCJun 22, 21:35 UTC2h 55m
2026-06-22 N735BF - Jun 22, 15:20 UTCJun 22, 15:45 UTC25m
2026-06-21 N735BF - Jun 21, 19:34 UTCJun 21, 20:45 UTC1h 10m
2026-06-21 N735BF - Jun 21, 16:19 UTCJun 21, 17:15 UTC55m
2026-06-20 N735BF - Jun 20, 18:34 UTCJun 20, 19:34 UTC1h 0m
2026-06-20 N735BF - Jun 20, 16:14 UTCJun 20, 17:29 UTC1h 15m
2026-06-13 N735BF - Jun 13, 20:20 UTCJun 13, 22:05 UTC1h 45m
2026-06-13 N735BF - Jun 13, 18:50 UTCJun 13, 19:45 UTC55m
2026-06-13 N735BF - Jun 13, 15:45 UTCJun 13, 17:10 UTC1h 25m
2026-06-11 N735BF - Jun 11, 00:30 UTCJun 11, 00:55 UTC25m
2026-06-10 N735BF - Jun 10, 23:45 UTCJun 10, 23:55 UTC10m
2026-06-07 N735BF - Jun 7, 21:05 UTCJun 7, 22:10 UTC1h 5m
2026-06-02 N735BF - Jun 2, 22:55 UTCJun 2, 23:10 UTC15m
2026-06-02 N735BF - Jun 2, 20:45 UTCJun 2, 21:10 UTC25m
2026-05-31 N735BF - May 31, 23:20 UTCJun 1, 00:05 UTC45m
2026-05-30 N735BF - May 30, 17:05 UTCMay 30, 17:45 UTC40m
2026-05-28 N735BF - May 28, 02:25 UTCMay 28, 03:15 UTC50m
2026-05-27 N735BF - May 27, 23:55 UTCMay 28, 01:55 UTC2h 0m
2026-05-09 N735BF - May 9, 19:49 UTCMay 9, 20:30 UTC40m
2026-05-09 N735BF - May 9, 18:00 UTCMay 9, 19:05 UTC1h 5m
2026-05-09 N735BF - May 9, 16:15 UTCMay 9, 16:55 UTC40m
2026-05-08 N735BF - May 8, 00:44 UTCMay 8, 01:14 UTC30m
2026-05-07 N735BF - May 7, 22:59 UTCMay 7, 23:59 UTC1h 0m

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 N735BF page for operator, model, and routing details .

Mode-S A9DDBD frequently asked

What is Mode-S code A9DDBD?
A9DDBD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N735BF.
Where is Mode-S A9DDBD registered?
Mode-S code A9DDBD 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 A9DDBD broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 23:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9DDBD, octal 52356675, decimal 11,132,349.
What flights does A9DDBD operate?
Mode-S A9DDBD has broadcast 1 distinct callsign, including N735BF.