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sensors Mode-S transponder

A9D7C8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N733SH · CESSNA 172 Skyhawk · operated by CHRISTIANSEN AVIATION LLC

Hex
A9D7C8
Octal
52353710
Decimal
11,130,824
Country
US
Tail
N733SH
Type
C172
Broadcasting now · callsign AUB131 · 3,075 ft
Flights observed
57
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Current position

A9D7C8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A9D7C8 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
AUB131 - 57 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 AUB131 AUO → AUO Jun 2, 15:50 UTCJun 2, 17:05 UTC1h 15m
2026-06-02 AUB131 - Jun 2, 02:50 UTCJun 2, 02:55 UTC5m
2026-06-02 AUB131 AUO → AUO Jun 2, 02:35 UTCJun 2, 02:40 UTC5m
2026-06-02 AUB131 AUO → AUO Jun 2, 01:50 UTCJun 2, 01:55 UTC5m
2026-06-01 AUB131 - Jun 1, 20:50 UTCJun 1, 21:00 UTC10m
2026-06-01 AUB131 - Jun 1, 19:00 UTCJun 1, 19:10 UTC10m
2026-05-29 AUB131 AUO → AUO May 29, 18:50 UTCMay 29, 20:05 UTC1h 15m
2026-05-29 AUB131 AUO → AUO May 29, 13:10 UTCMay 29, 13:55 UTC45m
2026-05-28 AUB131 - May 28, 20:50 UTCMay 28, 21:00 UTC10m
2026-05-28 AUB131 - May 28, 19:50 UTCMay 28, 20:00 UTC10m
2026-05-28 AUB131 AUO → AUO May 28, 15:30 UTCMay 28, 16:45 UTC1h 15m
2026-05-28 AUB131 AUO → AUO May 28, 00:40 UTCMay 28, 01:35 UTC55m
2026-05-27 AUB131 AUO → AUO May 27, 12:50 UTCMay 27, 14:05 UTC1h 15m
2026-05-22 AUB131 AUO → AUO May 22, 17:20 UTCMay 22, 17:55 UTC35m
2026-05-21 AUB131 AUO → AUO May 21, 19:25 UTCMay 21, 20:25 UTC1h 0m
2026-05-21 AUB131 AUO → AUO May 21, 00:00 UTCMay 21, 01:15 UTC1h 15m
2026-05-18 AUB131 AUO → AUO May 18, 12:30 UTCMay 18, 13:50 UTC1h 20m
2026-05-15 AUB131 AUO → AUO May 15, 12:25 UTCMay 15, 13:40 UTC1h 15m
2026-05-14 AUB131 AUO → AUO May 14, 11:25 UTCMay 14, 12:40 UTC1h 15m
2026-05-13 AUB131 - May 13, 19:10 UTCMay 13, 19:15 UTC5m
2026-05-13 AUB131 - May 13, 18:00 UTCMay 13, 18:10 UTC10m
2026-05-08 AUB131 AUO → AUO May 8, 19:40 UTCMay 8, 20:40 UTC1h 0m
2026-05-07 AUB131 AUO → AUO May 7, 18:55 UTCMay 7, 20:20 UTC1h 25m
2026-05-05 AUB131 AUO → AUO May 5, 19:00 UTCMay 5, 19:15 UTC15m
2026-05-04 AUB131 AUO → AUO May 4, 17:00 UTCMay 4, 18:05 UTC1h 5m
2026-05-01 AUB131 AUO → AUO May 1, 16:45 UTCMay 1, 17:55 UTC1h 10m
2026-04-30 AUB131 AUO → AUO Apr 30, 21:55 UTCApr 30, 22:50 UTC55m
2026-04-29 AUB131 AUO → AUO Apr 29, 17:30 UTCApr 29, 18:35 UTC1h 5m
2026-04-27 AUB131 - Apr 27, 22:40 UTCApr 27, 23:05 UTC25m
2026-04-27 AUB131 - Apr 27, 21:45 UTCApr 27, 22:00 UTC15m
2026-04-27 AUB131 AUO → AUO Apr 27, 14:35 UTCApr 27, 15:25 UTC50m
2026-04-25 AUB131 AUO → AUO Apr 25, 13:40 UTCApr 25, 13:55 UTC15m
2026-04-24 AUB131 AUO → AUO Apr 24, 22:15 UTCApr 24, 23:05 UTC50m
2026-04-24 AUB131 AUO → AUO Apr 24, 18:10 UTCApr 24, 20:55 UTC2h 45m
2026-04-24 AUB131 AUO → AUO Apr 24, 13:35 UTCApr 24, 14:45 UTC1h 10m
2026-04-23 AUB131 AUO → AUO Apr 23, 22:35 UTCApr 24, 00:05 UTC1h 30m
2026-04-23 AUB131 AUO → AUO Apr 23, 19:10 UTCApr 23, 20:25 UTC1h 15m
2026-04-23 AUB131 AUO → AUO Apr 23, 14:20 UTCApr 23, 15:20 UTC1h 0m
2026-04-22 AUB131 AUO → AUO Apr 22, 23:00 UTCApr 23, 00:00 UTC1h 0m
2026-04-22 AUB131 AUO → AUO Apr 22, 19:00 UTCApr 22, 20:40 UTC1h 40m
2026-04-22 AUB131 AUO → AUO Apr 22, 13:20 UTCApr 22, 14:55 UTC1h 35m
2026-04-21 AUB131 AUO → AUO Apr 21, 12:20 UTCApr 21, 13:45 UTC1h 25m
2026-04-17 AUB131 - Apr 17, 19:25 UTCApr 17, 20:30 UTC1h 5m
2026-04-17 AUB131 - Apr 17, 19:05 UTCApr 17, 19:20 UTC15m
2026-04-17 AUB131 - Apr 17, 17:25 UTCApr 17, 17:35 UTC10m
2026-04-17 AUB131 - Apr 17, 16:25 UTCApr 17, 17:15 UTC50m
2026-04-17 AUB131 - Apr 17, 14:35 UTCApr 17, 15:15 UTC39m
2026-04-16 AUB131 - Apr 16, 21:14 UTCApr 16, 21:55 UTC40m
2026-04-16 AUB131 - Apr 16, 20:40 UTCApr 16, 21:05 UTC25m
2026-04-16 AUB131 - Apr 16, 15:15 UTCApr 16, 15:35 UTC20m

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 N733SH page for operator, model, and routing details .

Mode-S A9D7C8 frequently asked

What is Mode-S code A9D7C8?
A9D7C8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N733SH.
Where is Mode-S A9D7C8 registered?
Mode-S code A9D7C8 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 A9D7C8 broadcasting right now?
Yes. Mode-S A9D7C8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9D7C8, octal 52353710, decimal 11,130,824.
What flights does A9D7C8 operate?
Mode-S A9D7C8 has broadcast 1 distinct callsign, including AUB131.