Apparatus

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sensors Mode-S transponder

AC9700

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N910DK · operated by UPSIDE DOWN HOLDINGS LLC

Hex
AC9700
Octal
53113400
Decimal
11,310,848
Country
US
Tail
N910DK
Type
BL8
No current signal · last broadcast Jul 26, 03:10 UTC
Flights observed
24
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 03:10 UTC

Last known position

Most recent position reported by Mode-S AC9700.

Country allocation

The ICAO 24-bit address AC9700 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
N910DK - 24 2026-07-26

Recent flights last 24

DateFlightRouteTakeoffLandingDuration
2026-07-26 N910DK VNY → VNY Jul 26, 02:45 UTCJul 26, 03:10 UTC25m
2026-07-24 N910DK VNY → VNY Jul 24, 03:05 UTCJul 24, 03:20 UTC15m
2026-07-21 N910DK VNY → VNY Jul 21, 04:10 UTCJul 21, 04:30 UTC20m
2026-07-19 N910DK VNY → VNY Jul 19, 02:45 UTCJul 19, 03:15 UTC30m
2026-07-14 N910DK VNY → VNY Jul 14, 02:45 UTCJul 14, 03:15 UTC30m
2026-07-12 N910DK - Jul 12, 00:20 UTCJul 12, 00:45 UTC25m
2026-07-07 N910DK VNY → VNY Jul 7, 02:25 UTCJul 7, 03:30 UTC1h 5m
2026-07-04 N910DK VNY → VNY Jul 4, 23:10 UTCJul 4, 23:30 UTC20m
2026-07-04 N910DK VNY → VNY Jul 4, 01:25 UTCJul 4, 02:50 UTC1h 25m
2026-06-29 N910DK VNY → VNY Jun 29, 01:44 UTCJun 29, 02:05 UTC20m
2026-06-26 N910DK VNY → VNY Jun 26, 00:20 UTCJun 26, 00:45 UTC25m
2026-06-24 N910DK - Jun 24, 00:40 UTCJun 24, 01:55 UTC1h 15m
2026-06-23 N910DK - Jun 23, 23:14 UTCJun 23, 23:44 UTC30m
2026-06-23 N910DK - Jun 23, 20:44 UTCJun 23, 22:15 UTC1h 30m
2026-06-23 N910DK - Jun 23, 19:19 UTCJun 23, 19:59 UTC40m
2026-06-21 N910DK VNY → VNY Jun 21, 18:54 UTCJun 21, 19:29 UTC35m
2026-06-20 N910DK VNY → VNY Jun 20, 22:45 UTCJun 20, 23:29 UTC45m
2026-06-19 N910DK VNY → VNY Jun 19, 01:29 UTCJun 19, 01:59 UTC30m
2026-06-18 N910DK VNY → VNY Jun 18, 23:15 UTCJun 18, 23:35 UTC20m
2026-04-30 N910DK VNY → VNY Apr 30, 00:45 UTCApr 30, 01:05 UTC20m
2026-04-20 N910DK - Apr 20, 21:45 UTCApr 20, 21:55 UTC10m
2026-04-20 N910DK - Apr 20, 20:10 UTCApr 20, 20:25 UTC15m
2026-04-19 N910DK VNY → VNY Apr 19, 00:55 UTCApr 19, 01:35 UTC40m
2026-04-15 N910DK VNY → VNY Apr 15, 01:00 UTCApr 15, 01:45 UTC45m

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 N910DK page for operator, model, and routing details .

Mode-S AC9700 frequently asked

What is Mode-S code AC9700?
AC9700 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N910DK.
Where is Mode-S AC9700 registered?
Mode-S code AC9700 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 AC9700 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 03:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC9700, octal 53113400, decimal 11,310,848.
What flights does AC9700 operate?
Mode-S AC9700 has broadcast 1 distinct callsign, including N910DK.