Apparatus

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sensors Mode-S transponder

7C4DCC

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-PNI · BOEING 737-300 · operated by NAURU AIR CORPORATION

Hex
7C4DCC
Octal
37046714
Decimal
8,146,380
Country
AU
Tail
VH-PNI
Type
B733
No current signal · last broadcast 1d ago
Flights observed
50
Distinct callsigns
12
Country
AU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7C4DCC.

Country allocation

The ICAO 24-bit address 7C4DCC falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia 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 12 distinct

Callsign Airline Flights Last seen
RON42 - 12 2026-07-13
RON41 - 12 2026-07-09
RON92 - 7 2026-07-07
RON91 - 4 2026-07-01
RON800 Nauru Airlines 3 2026-06-08
SOL727 - 2 2026-06-26
RON608 - 2 2026-06-21
RON607 - 2 2026-06-19
RON2 - 2 2026-06-29
RON1 - 2 2026-04-17
SOL726 Solomon Airlines 1 2026-05-20
RON510 Nauru Airlines 1 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 RON42 - Jul 13, 13:30 UTCJul 13, 14:15 UTC45m
2026-07-09 RON41 - Jul 9, 13:25 UTCJul 9, 14:05 UTC40m
2026-07-07 RON92 BNE → BNE Jul 7, 20:35 UTCJul 8, 06:25 UTC9h 50m
2026-07-06 RON42 - Jul 6, 12:45 UTCJul 6, 13:30 UTC45m
2026-07-02 RON41 - Jul 2, 13:35 UTCJul 2, 14:15 UTC40m
2026-07-01 RON91 BNE → BNE Jul 1, 01:20 UTCJul 1, 11:20 UTC10h 0m
2026-06-29 RON42 - Jun 29, 19:49 UTCJun 30, 13:00 UTC17h 11m
2026-06-29 RON2 BNE → ROR Jun 29, 04:09 UTCJun 29, 14:25 UTC10h 15m
2026-06-26 SOL727 BNE → BNE Jun 26, 23:39 UTCJun 27, 06:50 UTC7h 10m
2026-06-26 RON41 BNE → BNE Jun 26, 12:14 UTCJun 26, 14:15 UTC2h 0m
2026-06-25 RON41 BNE → BNE Jun 25, 13:05 UTCJun 25, 17:34 UTC4h 30m
2026-06-23 RON92 BNE → INU Jun 23, 20:54 UTCJun 24, 06:39 UTC9h 45m
2026-06-21 RON608 SYD → BNE Jun 21, 11:10 UTCJun 21, 12:35 UTC1h 25m
2026-06-21 RON608 - Jun 21, 08:25 UTCJun 21, 09:00 UTC35m
2026-06-19 RON607 - Jun 19, 09:40 UTCJun 19, 10:19 UTC40m
2026-06-19 RON607 - Jun 19, 06:54 UTCJun 19, 08:09 UTC1h 15m
2026-06-12 RON2 - Jun 12, 00:45 UTCJun 12, 10:45 UTC10h 0m
2026-06-09 RON91 INU → BNE Jun 9, 21:25 UTCJun 10, 06:50 UTC9h 25m
2026-06-08 RON800 BNE → INU Jun 8, 04:20 UTCJun 8, 05:40 UTC1h 20m
2026-06-02 RON800 BNE → INU Jun 2, 01:40 UTCJun 2, 03:25 UTC1h 45m
2026-05-23 RON800 BNE → INU May 23, 22:10 UTCMay 23, 23:35 UTC1h 25m
2026-05-21 SOL727 SON → BNE May 21, 06:05 UTCMay 21, 06:40 UTC35m
2026-05-20 SOL726 SON → VLI May 20, 23:50 UTCMay 21, 00:20 UTC30m
2026-05-19 RON92 BNE → INU May 19, 20:45 UTCMay 20, 06:35 UTC9h 51m
2026-05-18 RON42 INU → BNE May 18, 14:45 UTCMay 18, 15:25 UTC40m
2026-05-17 RON42 INU → BNE May 17, 19:45 UTCMay 18, 15:25 UTC19h 40m
2026-05-15 RON41 PNI → ROR May 15, 04:50 UTCMay 15, 05:00 UTC10m
2026-05-14 RON41 PNI → ROR May 14, 12:10 UTCMay 14, 12:40 UTC30m
2026-05-12 RON92 BNE → INU May 12, 21:15 UTCMay 13, 07:05 UTC9h 50m
2026-05-10 RON42 INU → BNE May 10, 19:35 UTCMay 11, 13:15 UTC17h 40m
2026-05-07 RON41 PNI → ROR May 7, 13:05 UTCMay 8, 07:04 UTC18h 0m
2026-05-07 RON41 PNI → ROR May 7, 12:40 UTCMay 8, 07:04 UTC18h 25m
2026-05-05 RON92 BNE → INU May 5, 21:01 UTCMay 6, 06:50 UTC9h 50m
2026-05-03 RON42 INU → BNE May 3, 19:55 UTCMay 4, 13:00 UTC17h 5m
2026-04-30 RON41 PNI → ROR Apr 30, 12:20 UTCMay 1, 05:20 UTC17h 0m
2026-04-28 RON92 BNE → INU Apr 28, 20:55 UTCApr 29, 06:35 UTC9h 40m
2026-04-27 RON42 INU → BNE Apr 27, 13:05 UTCApr 27, 13:40 UTC35m
2026-04-26 RON42 INU → BNE Apr 26, 20:00 UTCApr 26, 20:10 UTC10m
2026-04-23 RON41 PNI → ROR Apr 23, 12:05 UTCApr 24, 05:30 UTC17h 25m
2026-04-21 RON91 INU → BNE Apr 21, 21:00 UTCApr 22, 06:55 UTC9h 55m
2026-04-20 RON42 INU → BNE Apr 20, 12:30 UTCApr 20, 13:05 UTC35m
2026-04-19 RON42 INU → BNE Apr 19, 19:45 UTCApr 19, 19:55 UTC10m
2026-04-18 RON41 PNI → ROR Apr 18, 06:40 UTCApr 18, 07:00 UTC20m
2026-04-17 RON41 PNI → ROR Apr 17, 12:35 UTCApr 17, 13:00 UTC25m
2026-04-17 RON1 - Apr 17, 07:20 UTCApr 17, 07:25 UTC5m
2026-04-17 RON1 - Apr 17, 06:35 UTCApr 17, 07:15 UTC40m
2026-04-15 RON510 BNE → INU Apr 15, 20:40 UTCApr 15, 21:00 UTC20m
2026-04-15 RON91 INU → BNE Apr 15, 05:55 UTCApr 15, 06:50 UTC55m
2026-04-14 RON92 - Apr 14, 20:55 UTCApr 14, 21:25 UTC30m
2026-04-13 RON42 INU → BNE Apr 13, 12:30 UTCApr 13, 13:00 UTC30m

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 VH-PNI page for operator, model, and routing details .

Mode-S 7C4DCC frequently asked

What is Mode-S code 7C4DCC?
7C4DCC is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-PNI.
Where is Mode-S 7C4DCC registered?
Mode-S code 7C4DCC is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C4DCC 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 7C4DCC, octal 37046714, decimal 8,146,380.
What flights does 7C4DCC operate?
Mode-S 7C4DCC has broadcast 12 distinct callsigns, including RON42, RON41, RON92, RON91, RON800.