Apparatus

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sensors Mode-S transponder

A9DB63

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N734RE · CESSNA 172 Skyhawk · operated by INTERSPACE SYSTEMS LLC

Hex
A9DB63
Octal
52355543
Decimal
11,131,747
Country
US
Tail
N734RE
Type
C172
No current signal · last broadcast 2d ago
Flights observed
82
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A9DB63.

Country allocation

The ICAO 24-bit address A9DB63 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
N734RE - 82 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 N734RE MYF → MYF Jul 15, 03:40 UTCJul 15, 05:05 UTC1h 25m
2026-07-14 N734RE OCN → MYF Jul 14, 05:25 UTCJul 14, 05:50 UTC25m
2026-07-14 N734RE - Jul 14, 00:00 UTCJul 14, 00:25 UTC25m
2026-07-13 N734RE - Jul 13, 21:15 UTCJul 13, 21:55 UTC40m
2026-07-13 N734RE - Jul 13, 02:50 UTCJul 13, 05:55 UTC3h 5m
2026-07-12 N734RE - Jul 12, 02:01 UTCJul 12, 03:01 UTC1h 0m
2026-07-12 N734RE - Jul 12, 00:01 UTCJul 12, 00:50 UTC50m
2026-07-11 N734RE - Jul 11, 21:10 UTCJul 11, 22:30 UTC1h 20m
2026-07-11 N734RE MYF → MYF Jul 11, 00:45 UTCJul 11, 01:40 UTC55m
2026-07-10 N734RE - Jul 10, 01:05 UTCJul 10, 02:05 UTC1h 0m
2026-07-10 N734RE - Jul 10, 00:00 UTCJul 10, 00:55 UTC55m
2026-07-09 N734RE - Jul 9, 21:25 UTCJul 9, 22:15 UTC50m
2026-07-09 N734RE - Jul 9, 01:05 UTCJul 9, 02:15 UTC1h 10m
2026-07-08 N734RE MYF → MYF Jul 8, 20:45 UTCJul 8, 21:45 UTC1h 0m
2026-07-07 N734RE MYF → MYF Jul 7, 19:35 UTCJul 7, 20:20 UTC45m
2026-07-06 N734RE SQA → MYF Jul 6, 23:40 UTCJul 7, 01:30 UTC1h 50m
2026-07-03 N734RE - Jul 3, 18:00 UTCJul 3, 19:55 UTC1h 55m
2026-07-02 N734RE MYF → MYF Jul 2, 23:15 UTCJul 3, 00:35 UTC1h 20m
2026-07-02 N734RE HMT → MYF Jul 2, 00:40 UTCJul 2, 01:25 UTC45m
2026-07-01 N734RE MYF → HMT Jul 1, 23:55 UTCJul 2, 00:35 UTC40m
2026-07-01 N734RE MYF → MYF Jul 1, 20:10 UTCJul 1, 21:55 UTC1h 45m
2026-06-28 N734RE - Jun 28, 20:45 UTCJun 28, 22:29 UTC1h 45m
2026-06-28 N734RE - Jun 28, 16:19 UTCJun 28, 17:50 UTC1h 30m
2026-06-26 N734RE - Jun 26, 20:20 UTCJun 26, 22:19 UTC2h 0m
2026-06-23 N734RE SBD → MYF Jun 23, 22:25 UTCJun 23, 23:29 UTC1h 5m
2026-06-23 N734RE HMT → SBD Jun 23, 21:49 UTCJun 23, 22:15 UTC25m
2026-06-23 N734RE - Jun 23, 21:05 UTCJun 23, 21:45 UTC40m
2026-06-23 N734RE - Jun 23, 14:55 UTCJun 23, 16:39 UTC1h 45m
2026-06-23 N734RE - Jun 23, 02:04 UTCJun 23, 02:45 UTC40m
2026-06-23 N734RE MYF → BNG Jun 23, 00:04 UTCJun 23, 00:50 UTC45m
2026-06-21 N734RE - Jun 21, 18:35 UTCJun 21, 19:45 UTC1h 10m
2026-06-21 N734RE - Jun 21, 16:54 UTCJun 21, 17:54 UTC1h 0m
2026-06-20 N734RE - Jun 20, 21:55 UTCJun 20, 23:10 UTC1h 15m
2026-06-20 N734RE - Jun 20, 01:09 UTCJun 20, 03:04 UTC1h 55m
2026-06-17 N734RE - Jun 17, 23:20 UTCJun 18, 01:45 UTC2h 25m
2026-06-17 N734RE MYF → MYF Jun 17, 16:55 UTCJun 17, 17:20 UTC25m
2026-06-16 N734RE - Jun 16, 20:45 UTCJun 16, 21:15 UTC30m
2026-06-12 N734RE MYF → MYF Jun 12, 17:30 UTCJun 12, 17:40 UTC10m
2026-06-06 N734RE - Jun 6, 01:25 UTCJun 6, 02:05 UTC40m
2026-06-03 N734RE MYF → MYF Jun 3, 18:20 UTCJun 3, 18:30 UTC10m
2026-04-26 N734RE - Apr 26, 21:35 UTCApr 26, 22:45 UTC1h 10m
2026-04-25 N734RE MYF → MYF Apr 25, 22:30 UTCApr 25, 23:10 UTC40m
2026-04-25 N734RE MYF → MYF Apr 25, 20:10 UTCApr 25, 21:25 UTC1h 15m
2026-04-25 N734RE MYF → MYF Apr 25, 15:15 UTCApr 25, 16:20 UTC1h 5m
2026-04-24 N734RE MYF → MYF Apr 24, 23:45 UTCApr 25, 00:35 UTC50m
2026-04-24 N734RE HMT → MYF Apr 24, 19:50 UTCApr 24, 20:40 UTC50m
2026-04-24 N734RE - Apr 24, 17:55 UTCApr 24, 18:45 UTC50m
2026-04-24 N734RE MYF → MYF Apr 24, 02:20 UTCApr 24, 03:45 UTC1h 25m
2026-04-23 N734RE - Apr 23, 23:50 UTCApr 24, 01:15 UTC1h 25m
2026-04-23 N734RE MYF → MYF Apr 23, 19:25 UTCApr 23, 20:25 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 N734RE page for operator, model, and routing details .

Mode-S A9DB63 frequently asked

What is Mode-S code A9DB63?
A9DB63 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N734RE.
Where is Mode-S A9DB63 registered?
Mode-S code A9DB63 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 A9DB63 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 A9DB63, octal 52355543, decimal 11,131,747.
What flights does A9DB63 operate?
Mode-S A9DB63 has broadcast 1 distinct callsign, including N734RE.