Apparatus

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sensors Mode-S transponder

A9DBB7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N734UP · CESSNA 172 Skyhawk · operated by LEE RANDALL ROSS

Hex
A9DBB7
Octal
52355667
Decimal
11,131,831
Country
US
Tail
N734UP
Type
C172
No current signal · last broadcast 2d ago
Flights observed
122
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A9DBB7.

Country allocation

The ICAO 24-bit address A9DBB7 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
N734UP - 122 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N734UP - Jul 13, 15:20 UTCJul 13, 16:50 UTC1h 30m
2026-07-09 N734UP DWH → DWH Jul 9, 16:20 UTCJul 9, 17:10 UTC50m
2026-07-09 N734UP - Jul 9, 06:50 UTCJul 9, 07:20 UTC30m
2026-07-09 N734UP - Jul 9, 02:20 UTCJul 9, 03:00 UTC40m
2026-07-08 N734UP DWH → DWH Jul 8, 18:30 UTCJul 8, 19:50 UTC1h 20m
2026-07-07 N734UP - Jul 7, 14:20 UTCJul 7, 15:45 UTC1h 25m
2026-07-06 N734UP DWH → DWH Jul 6, 18:50 UTCJul 6, 19:05 UTC15m
2026-07-05 N734UP - Jul 5, 18:50 UTCJul 5, 20:10 UTC1h 20m
2026-07-04 N734UP - Jul 4, 21:15 UTCJul 4, 22:30 UTC1h 15m
2026-07-04 N734UP - Jul 4, 15:45 UTCJul 4, 16:50 UTC1h 5m
2026-07-03 N734UP - Jul 3, 18:55 UTCJul 3, 20:05 UTC1h 10m
2026-07-03 N734UP DWH → DWH Jul 3, 13:25 UTCJul 3, 14:30 UTC1h 5m
2026-06-30 N734UP - Jun 30, 18:50 UTCJun 30, 20:10 UTC1h 20m
2026-06-30 N734UP - Jun 30, 15:45 UTCJun 30, 17:30 UTC1h 45m
2026-06-30 N734UP - Jun 30, 13:40 UTCJun 30, 14:30 UTC50m
2026-06-30 N734UP - Jun 30, 01:55 UTCJun 30, 02:30 UTC35m
2026-06-29 N734UP DWH → DWH Jun 29, 19:00 UTCJun 29, 19:54 UTC55m
2026-06-28 N734UP - Jun 28, 16:29 UTCJun 28, 17:10 UTC40m
2026-06-27 N734UP - Jun 27, 16:44 UTCJun 27, 17:25 UTC40m
2026-06-27 N734UP DWH → DWH Jun 27, 14:20 UTCJun 27, 14:54 UTC35m
2026-06-26 N734UP - Jun 26, 19:20 UTCJun 26, 20:20 UTC1h 0m
2026-06-26 N734UP - Jun 26, 15:49 UTCJun 26, 17:19 UTC1h 30m
2026-06-26 N734UP DWH → DWH Jun 26, 13:10 UTCJun 26, 14:29 UTC1h 20m
2026-06-23 N734UP - Jun 23, 19:15 UTCJun 23, 19:50 UTC35m
2026-06-22 N734UP - Jun 22, 15:29 UTCJun 22, 16:29 UTC1h 0m
2026-06-19 N734UP - Jun 19, 15:54 UTCJun 19, 16:39 UTC45m
2026-06-19 N734UP DWH → DWH Jun 19, 13:04 UTCJun 19, 14:34 UTC1h 30m
2026-06-12 N734UP - Jun 12, 19:40 UTCJun 12, 20:10 UTC30m
2026-06-12 N734UP - Jun 12, 15:35 UTCJun 12, 17:30 UTC1h 55m
2026-06-11 N734UP DWH → DWH Jun 11, 00:05 UTCJun 11, 01:45 UTC1h 40m
2026-06-10 N734UP - Jun 10, 22:30 UTCJun 10, 23:05 UTC35m
2026-06-10 N734UP - Jun 10, 21:30 UTCJun 10, 22:00 UTC30m
2026-06-10 N734UP DWH → DWH Jun 10, 18:45 UTCJun 10, 20:15 UTC1h 30m
2026-06-10 N734UP - Jun 10, 15:40 UTCJun 10, 17:15 UTC1h 35m
2026-06-09 N734UP - Jun 9, 21:10 UTCJun 9, 22:30 UTC1h 20m
2026-06-08 N734UP - Jun 8, 23:45 UTCJun 9, 00:30 UTC45m
2026-06-08 N734UP - Jun 8, 15:55 UTCJun 8, 16:45 UTC50m
2026-06-04 N734UP DWH → DWH Jun 4, 18:25 UTCJun 4, 18:55 UTC30m
2026-06-03 N734UP - Jun 3, 15:30 UTCJun 3, 15:50 UTC20m
2026-06-02 N734UP - Jun 2, 18:50 UTCJun 2, 19:40 UTC50m
2026-06-01 N734UP - Jun 1, 23:55 UTCJun 2, 01:00 UTC1h 5m
2026-06-01 N734UP - Jun 1, 15:45 UTCJun 1, 17:30 UTC1h 45m
2026-05-31 N734UP - May 31, 18:50 UTCMay 31, 20:05 UTC1h 15m
2026-05-31 N734UP DWH → DWH May 31, 15:30 UTCMay 31, 17:05 UTC1h 35m
2026-05-30 N734UP - May 30, 18:35 UTCMay 30, 20:25 UTC1h 50m
2026-05-28 N734UP - May 28, 21:00 UTCMay 28, 22:20 UTC1h 20m
2026-05-28 N734UP - May 28, 16:50 UTCMay 28, 17:10 UTC20m
2026-05-28 N734UP - May 28, 15:35 UTCMay 28, 16:15 UTC40m
2026-05-25 N734UP - May 25, 23:45 UTCMay 26, 01:24 UTC1h 40m
2026-05-25 N734UP - May 25, 18:40 UTCMay 25, 19:35 UTC54m

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 N734UP page for operator, model, and routing details .

Mode-S A9DBB7 frequently asked

What is Mode-S code A9DBB7?
A9DBB7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N734UP.
Where is Mode-S A9DBB7 registered?
Mode-S code A9DBB7 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 A9DBB7 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9DBB7, octal 52355667, decimal 11,131,831.
What flights does A9DBB7 operate?
Mode-S A9DBB7 has broadcast 1 distinct callsign, including N734UP.