Apparatus

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sensors Mode-S transponder

ADD907

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9912Q · CESSNA 172 Skyhawk · operated by KD AVIATION LLC

Hex
ADD907
Octal
53354407
Decimal
11,393,287
Country
US
Tail
N9912Q
Type
C172
No current signal · last broadcast 8h ago
Flights observed
43
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S ADD907.

Country allocation

The ICAO 24-bit address ADD907 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
N9912Q - 43 2026-05-30

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-05-30 N9912Q - May 30, 00:40 UTCMay 30, 01:05 UTC25m
2026-05-30 N9912Q - May 30, 00:10 UTCMay 30, 00:25 UTC15m
2026-05-29 N9912Q RBK → RBK May 29, 17:40 UTCMay 29, 18:20 UTC40m
2026-05-28 N9912Q - May 28, 23:55 UTCMay 29, 00:35 UTC40m
2026-05-28 N9912Q - May 28, 21:30 UTCMay 28, 22:20 UTC50m
2026-05-28 N9912Q - May 28, 20:20 UTCMay 28, 20:40 UTC20m
2026-05-28 N9912Q - May 28, 17:35 UTCMay 28, 18:25 UTC50m
2026-05-28 N9912Q - May 28, 14:00 UTCMay 28, 14:45 UTC45m
2026-05-25 N9912Q SMO → RBK May 25, 23:30 UTCMay 26, 01:00 UTC1h 30m
2026-05-25 N9912Q RBK → SMO May 25, 19:50 UTCMay 25, 20:50 UTC1h 0m
2026-05-25 N9912Q RBK → RBK May 25, 17:45 UTCMay 25, 18:15 UTC30m
2026-05-24 N9912Q - May 24, 21:10 UTCMay 24, 21:40 UTC30m
2026-05-24 N9912Q RBK → RBK May 24, 18:25 UTCMay 24, 19:00 UTC35m
2026-05-24 N9912Q RBK → RBK May 24, 16:25 UTCMay 24, 17:40 UTC1h 15m
2026-05-24 N9912Q - May 24, 02:50 UTCMay 24, 03:15 UTC25m
2026-05-24 N9912Q - May 24, 00:05 UTCMay 24, 00:25 UTC20m
2026-05-23 N9912Q RBK → RBK May 23, 19:55 UTCMay 23, 22:25 UTC2h 30m
2026-05-23 N9912Q RBK → RBK May 23, 18:00 UTCMay 23, 19:00 UTC1h 0m
2026-05-23 N9912Q RBK → RBK May 23, 16:25 UTCMay 23, 17:00 UTC35m
2026-05-23 N9912Q RAL → RBK May 23, 04:30 UTCMay 23, 05:05 UTC35m
2026-05-23 N9912Q RAL → RAL May 23, 04:15 UTCMay 23, 04:20 UTC5m
2026-05-23 N9912Q RBK → RAL May 23, 03:40 UTCMay 23, 04:05 UTC25m
2026-05-23 N9912Q - May 23, 01:35 UTCMay 23, 02:25 UTC50m
2026-05-22 N9912Q RBK → RBK May 22, 22:05 UTCMay 22, 23:10 UTC1h 5m
2026-05-21 N9912Q HMT → RBK May 21, 23:40 UTCMay 22, 00:00 UTC20m
2026-05-21 N9912Q RBK → HMT May 21, 23:15 UTCMay 21, 23:35 UTC20m
2026-05-21 N9912Q RBK → RBK May 21, 01:50 UTCMay 21, 02:55 UTC1h 5m
2026-05-20 N9912Q - May 20, 17:45 UTCMay 20, 18:25 UTC40m
2026-05-19 N9912Q - May 19, 21:35 UTCMay 19, 22:20 UTC45m
2026-05-19 N9912Q RBK → RBK May 19, 18:00 UTCMay 19, 18:30 UTC30m
2026-05-19 N9912Q RBK → RBK May 19, 15:50 UTCMay 19, 17:00 UTC1h 10m
2026-05-19 N9912Q RBK → RBK May 19, 01:35 UTCMay 19, 02:40 UTC1h 5m
2026-05-18 N9912Q RBK → RBK May 18, 22:35 UTCMay 18, 23:30 UTC55m
2026-05-18 N9912Q - May 18, 19:50 UTCMay 18, 20:20 UTC30m
2026-05-18 N9912Q RBK → RBK May 18, 17:55 UTCMay 18, 18:55 UTC59m
2026-05-17 N9912Q - May 17, 23:25 UTCMay 18, 00:05 UTC40m
2026-05-16 N9912Q - May 16, 20:45 UTCMay 16, 21:35 UTC50m
2026-05-16 N9912Q RBK → RBK May 16, 16:55 UTCMay 16, 18:10 UTC1h 15m
2026-05-15 N9912Q RBK → RBK May 15, 21:25 UTCMay 15, 22:25 UTC1h 0m
2026-05-15 N9912Q - May 15, 00:55 UTCMay 15, 01:55 UTC1h 0m
2026-05-14 N9912Q RBK → EMT May 14, 22:55 UTCMay 15, 00:15 UTC1h 20m
2026-05-14 N9912Q - May 14, 19:35 UTCMay 14, 20:40 UTC1h 5m
2026-05-13 N9912Q - May 13, 21:30 UTCMay 13, 21:50 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 N9912Q page for operator, model, and routing details .

Mode-S ADD907 frequently asked

What is Mode-S code ADD907?
ADD907 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9912Q.
Where is Mode-S ADD907 registered?
Mode-S code ADD907 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 ADD907 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADD907, octal 53354407, decimal 11,393,287.
What flights does ADD907 operate?
Mode-S ADD907 has broadcast 1 distinct callsign, including N9912Q.