Apparatus

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sensors Mode-S transponder

ACAAAD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N915QS · CESSNA 680 Citation Latitude · operated by CLRP PROPERTY I LLC, CNCM LLC, WATSON DAVID, WATSON MICHELE, GALAXY AVIATION LLC, ACKERMAN GARY

Hex
ACAAAD
Octal
53125255
Decimal
11,315,885
Country
US
Tail
N915QS
Type
C68A
No current signal · last broadcast Jul 26, 20:20 UTC
Flights observed
228
Distinct callsigns
2
Country
US
Last broadcast
Jul 26, 20:20 UTC

Last known position

Most recent position reported by Mode-S ACAAAD.

Country allocation

The ICAO 24-bit address ACAAAD 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 2 distinct

Callsign Airline Flights Last seen
EJA915 NetJets 207 2026-07-26
N915QS - 21 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EJA915 OMA → MDW Jul 26, 19:50 UTCJul 26, 20:20 UTC30m
2026-07-26 EJA915 OMA → MDW Jul 26, 16:35 UTCJul 26, 17:10 UTC35m
2026-07-25 EJA915 OMA → MDW Jul 25, 20:25 UTCJul 25, 21:40 UTC1h 15m
2026-07-25 EJA915 OMA → MDW Jul 25, 18:00 UTCJul 25, 19:20 UTC1h 20m
2026-07-25 EJA915 OMA → MDW Jul 25, 16:30 UTCJul 25, 16:40 UTC10m
2026-07-24 EJA915 OMA → MDW Jul 24, 21:00 UTCJul 24, 22:05 UTC1h 5m
2026-07-24 EJA915 OMA → MDW Jul 24, 18:05 UTCJul 24, 20:35 UTC2h 30m
2026-07-20 EJA915 OMA → MDW Jul 20, 20:55 UTCJul 20, 22:00 UTC1h 5m
2026-07-20 EJA915 OMA → MDW Jul 20, 17:00 UTCJul 20, 18:20 UTC1h 20m
2026-07-20 EJA915 OMA → MDW Jul 20, 11:30 UTCJul 20, 14:05 UTC2h 35m
2026-07-19 N915QS - Jul 19, 18:45 UTCJul 19, 21:20 UTC2h 35m
2026-07-19 N915QS - Jul 19, 13:35 UTCJul 19, 16:55 UTC3h 20m
2026-07-18 EJA915 - Jul 18, 16:05 UTCJul 18, 16:35 UTC30m
2026-07-18 EJA915 - Jul 18, 13:40 UTCJul 18, 14:35 UTC55m
2026-07-17 EJA915 - Jul 17, 20:00 UTCJul 17, 21:30 UTC1h 30m
2026-07-17 EJA915 - Jul 17, 18:10 UTCJul 17, 18:34 UTC25m
2026-07-17 EJA915 - Jul 17, 16:00 UTCJul 17, 16:40 UTC40m
2026-07-17 EJA915 - Jul 17, 14:10 UTCJul 17, 15:05 UTC55m
2026-07-16 EJA915 - Jul 16, 20:25 UTCJul 16, 21:30 UTC1h 5m
2026-07-16 EJA915 - Jul 16, 17:49 UTCJul 16, 19:10 UTC1h 20m
2026-07-16 EJA915 - Jul 16, 13:40 UTCJul 16, 16:44 UTC3h 5m
2026-07-13 EJA915 - Jul 13, 16:40 UTCJul 13, 20:20 UTC3h 40m
2026-07-13 EJA915 - Jul 13, 15:30 UTCJul 13, 15:45 UTC15m
2026-07-12 EJA915 - Jul 12, 21:10 UTCJul 12, 21:45 UTC35m
2026-07-12 EJA915 - Jul 12, 18:15 UTCJul 12, 18:55 UTC40m
2026-07-12 EJA915 - Jul 12, 16:10 UTCJul 12, 16:35 UTC25m
2026-07-12 EJA915 - Jul 12, 02:20 UTCJul 12, 02:55 UTC35m
2026-07-11 EJA915 - Jul 11, 20:40 UTCJul 11, 21:40 UTC1h 0m
2026-07-11 EJA915 LNS → YYZ Jul 11, 18:15 UTCJul 11, 19:15 UTC1h 0m
2026-07-11 EJA915 - Jul 11, 17:10 UTCJul 11, 17:35 UTC25m
2026-07-06 EJA915 OMA → MDW Jul 6, 20:00 UTCJul 6, 21:15 UTC1h 15m
2026-07-06 EJA915 OMA → MDW Jul 6, 17:50 UTCJul 6, 19:20 UTC1h 30m
2026-07-06 EJA915 OMA → MDW Jul 6, 15:45 UTCJul 6, 16:30 UTC45m
2026-07-06 EJA915 OMA → MDW Jul 6, 13:00 UTCJul 6, 14:05 UTC1h 5m
2026-07-05 EJA915 OMA → MDW Jul 5, 23:10 UTCJul 5, 23:40 UTC30m
2026-07-05 N915QS - Jul 5, 17:15 UTCJul 5, 21:50 UTC4h 35m
2026-07-04 N915QS - Jul 4, 22:25 UTCJul 5, 21:15 UTC22h 50m
2026-07-04 N915QS - Jul 4, 19:20 UTCJul 5, 17:50 UTC22h 30m
2026-07-04 N915QS - Jul 4, 19:05 UTCJul 5, 17:15 UTC22h 10m
2026-07-04 EJA915 OMA → MDW Jul 4, 17:15 UTCJul 4, 18:10 UTC55m
2026-07-03 EJA915 OMA → MDW Jul 3, 13:40 UTCJul 3, 14:00 UTC20m
2026-07-02 EJA915 OMA → MDW Jul 2, 20:35 UTCJul 2, 20:55 UTC20m
2026-07-02 EJA915 OMA → MDW Jul 2, 19:00 UTCJul 2, 19:25 UTC25m
2026-07-02 EJA915 OMA → MDW Jul 2, 17:05 UTCJul 2, 17:25 UTC20m
2026-07-02 EJA915 OMA → MDW Jul 2, 14:10 UTCJul 2, 15:45 UTC1h 35m
2026-07-02 EJA915 OMA → MDW Jul 2, 01:15 UTCJul 2, 01:50 UTC35m
2026-07-01 EJA915 OMA → MDW Jul 1, 23:35 UTCJul 2, 00:30 UTC55m
2026-07-01 EJA915 OMA → MDW Jul 1, 21:55 UTCJul 1, 22:40 UTC45m
2026-07-01 EJA915 OMA → MDW Jul 1, 17:55 UTCJul 1, 19:40 UTC1h 45m
2026-07-01 EJA915 OMA → MDW Jul 1, 15:30 UTCJul 1, 16:05 UTC35m

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 N915QS page for operator, model, and routing details .

Mode-S ACAAAD frequently asked

What is Mode-S code ACAAAD?
ACAAAD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N915QS.
Where is Mode-S ACAAAD registered?
Mode-S code ACAAAD 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 ACAAAD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACAAAD, octal 53125255, decimal 11,315,885.
What flights does ACAAAD operate?
Mode-S ACAAAD has broadcast 2 distinct callsigns, including EJA915, N915QS.