Apparatus

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sensors Mode-S transponder

AD4C60

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N956QS · CESSNA 680 Citation Sovereign · operated by AD CONVEYANCE LLC, CHARLOTTE PIPE AND FOUNDRY CO, D-AIRE LLC, INGERSOLL RAND INC, BROSTOWSKI MARK, BROSTOWSKI MARIBETH

Hex
AD4C60
Octal
53246140
Decimal
11,357,280
Country
US
Tail
N956QS
Type
C680
No current signal · last broadcast 1d ago
Flights observed
196
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AD4C60.

Country allocation

The ICAO 24-bit address AD4C60 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
EJA956 - 179 2026-07-12
N956QS - 17 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 EJA956 - Jul 12, 15:10 UTCJul 12, 15:50 UTC40m
2026-07-08 EJA956 - Jul 8, 23:25 UTCJul 8, 23:55 UTC30m
2026-07-02 EJA956 - Jul 2, 18:45 UTCJul 2, 20:00 UTC1h 15m
2026-07-02 EJA956 - Jul 2, 17:00 UTCJul 2, 17:25 UTC25m
2026-06-27 EJA956 - Jun 27, 15:45 UTCJun 27, 16:44 UTC1h 0m
2026-06-26 EJA956 - Jun 26, 18:20 UTCJun 26, 19:35 UTC1h 15m
2026-06-26 EJA956 - Jun 26, 16:30 UTCJun 26, 16:49 UTC20m
2026-06-22 EJA956 - Jun 22, 20:44 UTCJun 22, 23:05 UTC2h 20m
2026-06-22 EJA956 - Jun 22, 18:04 UTCJun 22, 19:44 UTC1h 40m
2026-06-22 EJA956 BED → ORL Jun 22, 14:05 UTCJun 22, 16:50 UTC2h 45m
2026-06-22 EJA956 - Jun 22, 13:05 UTCJun 22, 13:19 UTC15m
2026-06-21 EJA956 - Jun 21, 19:50 UTCJun 21, 22:44 UTC2h 55m
2026-06-21 N956QS - Jun 21, 16:25 UTCJun 21, 18:54 UTC2h 30m
2026-06-21 N956QS - Jun 21, 11:55 UTCJun 21, 14:30 UTC2h 35m
2026-06-20 N956QS - Jun 20, 21:14 UTCJun 20, 21:49 UTC35m
2026-06-20 N956QS - Jun 20, 16:24 UTCJun 20, 16:44 UTC20m
2026-06-20 N956QS - Jun 20, 12:59 UTCJun 20, 14:39 UTC1h 40m
2026-06-19 EJA956 - Jun 19, 20:59 UTCJun 19, 22:14 UTC1h 15m
2026-06-19 EJA956 - Jun 19, 19:59 UTCJun 19, 20:24 UTC25m
2026-06-19 EJA956 HYA → BVY Jun 19, 17:55 UTCJun 19, 18:20 UTC25m
2026-06-19 EJA956 - Jun 19, 13:50 UTCJun 19, 15:19 UTC1h 30m
2026-06-18 EJA956 YYZ → PTK Jun 18, 22:40 UTCJun 18, 23:20 UTC40m
2026-06-18 EJA956 - Jun 18, 19:50 UTCJun 18, 21:40 UTC1h 50m
2026-06-18 EJA956 - Jun 18, 14:55 UTCJun 18, 15:55 UTC1h 0m
2026-06-18 EJA956 - Jun 18, 13:00 UTCJun 18, 13:55 UTC55m
2026-06-17 EJA956 - Jun 17, 20:30 UTCJun 17, 21:05 UTC35m
2026-06-17 EJA956 - Jun 17, 18:45 UTCJun 17, 19:35 UTC50m
2026-06-17 EJA956 - Jun 17, 17:15 UTCJun 17, 17:25 UTC10m
2026-06-16 EJA956 - Jun 16, 22:30 UTCJun 16, 23:10 UTC40m
2026-06-16 EJA956 - Jun 16, 18:15 UTCJun 16, 18:39 UTC25m
2026-06-16 EJA956 - Jun 16, 17:10 UTCJun 16, 17:40 UTC30m
2026-06-16 EJA956 - Jun 16, 12:39 UTCJun 16, 13:25 UTC45m
2026-06-15 EJA956 BOS → BVY Jun 15, 19:30 UTCJun 15, 19:35 UTC5m
2026-06-15 EJA956 - Jun 15, 17:59 UTCJun 15, 18:40 UTC40m
2026-06-15 EJA956 SRQ → TEB Jun 15, 12:55 UTCJun 15, 15:25 UTC2h 30m
2026-06-15 EJA956 TPA → SRQ Jun 15, 11:39 UTCJun 15, 11:54 UTC15m
2026-06-14 EJA956 - Jun 14, 21:25 UTCJun 14, 22:05 UTC40m
2026-06-14 EJA956 - Jun 14, 20:10 UTCJun 14, 20:25 UTC15m
2026-06-14 EJA956 - Jun 14, 15:05 UTCJun 14, 17:00 UTC1h 55m
2026-06-09 EJA956 LAS → SCF Jun 9, 21:20 UTCJun 9, 23:40 UTC2h 20m
2026-06-09 EJA956 LAS → SCF Jun 9, 17:05 UTCJun 9, 17:45 UTC40m
2026-06-09 EJA956 LAS → SCF Jun 9, 15:10 UTCJun 9, 15:50 UTC40m
2026-06-08 EJA956 LAS → SCF Jun 8, 18:25 UTCJun 8, 20:05 UTC1h 40m
2026-06-08 EJA956 LAS → SCF Jun 8, 15:00 UTCJun 8, 17:20 UTC2h 20m
2026-06-08 EJA956 LAS → SCF Jun 8, 13:45 UTCJun 8, 13:55 UTC10m
2026-06-07 EJA956 LAS → SCF Jun 7, 22:40 UTCJun 8, 00:30 UTC1h 50m
2026-06-07 EJA956 LAS → SCF Jun 7, 20:25 UTCJun 7, 21:40 UTC1h 15m
2026-06-07 EJA956 LAS → SCF Jun 7, 16:05 UTCJun 7, 19:25 UTC3h 20m
2026-06-07 EJA956 LAS → SCF Jun 7, 14:50 UTCJun 7, 15:00 UTC10m
2026-06-06 EJA956 LAS → SCF Jun 6, 14:25 UTCJun 6, 17:44 UTC3h 20m

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 N956QS page for operator, model, and routing details .

Mode-S AD4C60 frequently asked

What is Mode-S code AD4C60?
AD4C60 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N956QS.
Where is Mode-S AD4C60 registered?
Mode-S code AD4C60 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 AD4C60 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD4C60, octal 53246140, decimal 11,357,280.
What flights does AD4C60 operate?
Mode-S AD4C60 has broadcast 2 distinct callsigns, including EJA956, N956QS.